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/* |
/* |
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* Copyright (C) 2005 Anders Gavare. All rights reserved. |
* Copyright (C) 2005-2006 Anders Gavare. All rights reserved. |
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* |
* |
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* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
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* SUCH DAMAGE. |
* SUCH DAMAGE. |
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* |
* |
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* |
* |
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* $Id: cpu_arm_instr.c,v 1.29 2005/10/11 03:31:28 debug Exp $ |
* $Id: cpu_arm_instr.c,v 1.69 2006/09/09 09:04:32 debug Exp $ |
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* |
* |
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* ARM instructions. |
* ARM instructions. |
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* |
* |
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* (If no instruction was executed, then it should be decreased. If, say, 4 |
* (If no instruction was executed, then it should be decreased. If, say, 4 |
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* instructions were combined into one function and executed, then it should |
* instructions were combined into one function and executed, then it should |
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* be increased by 3.) |
* be increased by 3.) |
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* |
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* Note: cpu->pc is prefered over r[ARM_PC]. r[ARM_PC] is only used in a |
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* few places, and should always be kept in synch with the real |
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* program counter. |
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*/ |
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/* #define GATHER_BDT_STATISTICS */ |
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#ifdef GATHER_BDT_STATISTICS |
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/* |
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* update_bdt_statistics(): |
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* |
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* Gathers statistics about load/store multiple instructions. |
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* |
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* NOTE/TODO: Perhaps it would be more memory efficient to swap the high |
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* and low parts of the instruction word, so that the lllllll bits become |
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* the high bits; this would cause fewer host pages to be used. Anyway, the |
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* current implementation works on hosts with lots of RAM. |
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* |
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* The resulting file, bdt_statistics.txt, should then be processed like |
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* this to give a new cpu_arm_multi.txt: |
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* |
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* uniq -c bdt_statistics.txt|sort -nr|head -256|cut -f 2 > cpu_arm_multi.txt |
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*/ |
*/ |
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static void update_bdt_statistics(uint32_t iw) |
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{ |
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static FILE *f = NULL; |
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static long long *counts; |
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static char *counts_used; |
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static long long n = 0; |
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if (f == NULL) { |
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size_t s = (1 << 24) * sizeof(long long); |
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f = fopen("bdt_statistics.txt", "w"); |
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if (f == NULL) { |
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fprintf(stderr, "update_bdt_statistics(): :-(\n"); |
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exit(1); |
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} |
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counts = zeroed_alloc(s); |
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counts_used = zeroed_alloc(65536); |
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} |
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/* Drop the s-bit: xxxx100P USWLnnnn llllllll llllllll */ |
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iw = ((iw & 0x01800000) >> 1) | (iw & 0x003fffff); |
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counts_used[iw & 0xffff] = 1; |
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counts[iw] ++; |
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n ++; |
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if ((n % 500000) == 0) { |
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int i; |
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long long j; |
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fatal("[ update_bdt_statistics(): n = %lli ]\n", (long long) n); |
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fseek(f, 0, SEEK_SET); |
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for (i=0; i<0x1000000; i++) |
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if (counts_used[i & 0xffff] && counts[i] != 0) { |
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/* Recreate the opcode: */ |
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uint32_t opcode = ((i & 0x00c00000) << 1) |
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| (i & 0x003fffff) | 0x08000000; |
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for (j=0; j<counts[i]; j++) |
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fprintf(f, "0x%08x\n", opcode); |
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} |
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fflush(f); |
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} |
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} |
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#endif |
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/*****************************************************************************/ |
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/* |
/* |
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* condition code. (The NV condition code is not included, and the AL code |
* condition code. (The NV condition code is not included, and the AL code |
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* uses the main foo function.) Y also defines an array with pointers to |
* uses the main foo function.) Y also defines an array with pointers to |
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* all of these functions. |
* all of these functions. |
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* |
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* If the compiler is good enough (i.e. allows long enough code sequences |
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* to be inlined), then the Y functions will be compiled as full (inlined) |
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* functions, otherwise they will simply call the X function. |
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*/ |
*/ |
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uint8_t condition_hi[16] = { 0,0,1,1, 0,0,0,0, 0,0,1,1, 0,0,0,0 }; |
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uint8_t condition_ge[16] = { 1,0,1,0, 1,0,1,0, 0,1,0,1, 0,1,0,1 }; |
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uint8_t condition_gt[16] = { 1,0,1,0, 0,0,0,0, 0,1,0,1, 0,0,0,0 }; |
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#define Y(n) void arm_instr_ ## n ## __eq(struct cpu *cpu, \ |
#define Y(n) void arm_instr_ ## n ## __eq(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (cpu->cd.arm.cpsr & ARM_FLAG_Z) \ |
{ if (cpu->cd.arm.flags & ARM_F_Z) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __ne(struct cpu *cpu, \ |
void arm_instr_ ## n ## __ne(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (!(cpu->cd.arm.cpsr & ARM_FLAG_Z)) \ |
{ if (!(cpu->cd.arm.flags & ARM_F_Z)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __cs(struct cpu *cpu, \ |
void arm_instr_ ## n ## __cs(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (cpu->cd.arm.cpsr & ARM_FLAG_C) \ |
{ if (cpu->cd.arm.flags & ARM_F_C) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __cc(struct cpu *cpu, \ |
void arm_instr_ ## n ## __cc(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (!(cpu->cd.arm.cpsr & ARM_FLAG_C)) \ |
{ if (!(cpu->cd.arm.flags & ARM_F_C)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __mi(struct cpu *cpu, \ |
void arm_instr_ ## n ## __mi(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (cpu->cd.arm.cpsr & ARM_FLAG_N) \ |
{ if (cpu->cd.arm.flags & ARM_F_N) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __pl(struct cpu *cpu, \ |
void arm_instr_ ## n ## __pl(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (!(cpu->cd.arm.cpsr & ARM_FLAG_N)) \ |
{ if (!(cpu->cd.arm.flags & ARM_F_N)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __vs(struct cpu *cpu, \ |
void arm_instr_ ## n ## __vs(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (cpu->cd.arm.cpsr & ARM_FLAG_V) \ |
{ if (cpu->cd.arm.flags & ARM_F_V) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __vc(struct cpu *cpu, \ |
void arm_instr_ ## n ## __vc(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (!(cpu->cd.arm.cpsr & ARM_FLAG_V)) \ |
{ if (!(cpu->cd.arm.flags & ARM_F_V)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __hi(struct cpu *cpu, \ |
void arm_instr_ ## n ## __hi(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (cpu->cd.arm.cpsr & ARM_FLAG_C && \ |
{ if (condition_hi[cpu->cd.arm.flags]) \ |
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!(cpu->cd.arm.cpsr & ARM_FLAG_Z)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __ls(struct cpu *cpu, \ |
void arm_instr_ ## n ## __ls(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (cpu->cd.arm.cpsr & ARM_FLAG_Z || \ |
{ if (!condition_hi[cpu->cd.arm.flags]) \ |
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!(cpu->cd.arm.cpsr & ARM_FLAG_C)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __ge(struct cpu *cpu, \ |
void arm_instr_ ## n ## __ge(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (((cpu->cd.arm.cpsr & ARM_FLAG_N)?1:0) == \ |
{ if (condition_ge[cpu->cd.arm.flags]) \ |
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((cpu->cd.arm.cpsr & ARM_FLAG_V)?1:0)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __lt(struct cpu *cpu, \ |
void arm_instr_ ## n ## __lt(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (((cpu->cd.arm.cpsr & ARM_FLAG_N)?1:0) != \ |
{ if (!condition_ge[cpu->cd.arm.flags]) \ |
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((cpu->cd.arm.cpsr & ARM_FLAG_V)?1:0)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __gt(struct cpu *cpu, \ |
void arm_instr_ ## n ## __gt(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (((cpu->cd.arm.cpsr & ARM_FLAG_N)?1:0) == \ |
{ if (condition_gt[cpu->cd.arm.flags]) \ |
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((cpu->cd.arm.cpsr & ARM_FLAG_V)?1:0) && \ |
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!(cpu->cd.arm.cpsr & ARM_FLAG_Z)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void arm_instr_ ## n ## __le(struct cpu *cpu, \ |
void arm_instr_ ## n ## __le(struct cpu *cpu, \ |
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struct arm_instr_call *ic) \ |
struct arm_instr_call *ic) \ |
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{ if (((cpu->cd.arm.cpsr & ARM_FLAG_N)?1:0) != \ |
{ if (!condition_gt[cpu->cd.arm.flags]) \ |
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((cpu->cd.arm.cpsr & ARM_FLAG_V)?1:0) || \ |
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(cpu->cd.arm.cpsr & ARM_FLAG_Z)) \ |
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arm_instr_ ## n (cpu, ic); } \ |
arm_instr_ ## n (cpu, ic); } \ |
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void (*arm_cond_instr_ ## n [16])(struct cpu *, \ |
void (*arm_cond_instr_ ## n [16])(struct cpu *, \ |
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struct arm_instr_call *) = { \ |
struct arm_instr_call *) = { \ |
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/* |
/* |
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* nop: Do nothing. |
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* invalid: Invalid instructions end up here. |
* invalid: Invalid instructions end up here. |
209 |
*/ |
*/ |
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X(nop) { } |
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X(invalid) { |
X(invalid) { |
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uint32_t low_pc; |
uint32_t low_pc; |
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low_pc = ((size_t)ic - (size_t) |
low_pc = ((size_t)ic - (size_t) |
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cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
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cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
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<< ARM_INSTR_ALIGNMENT_SHIFT); |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
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cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
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cpu->pc = cpu->cd.arm.r[ARM_PC]; |
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fatal("Invalid ARM instruction: pc=0x%08x\n", (int)cpu->pc); |
fatal("FATAL ERROR: An internal error occured in the ARM" |
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" dyntrans code. Please contact the author with detailed" |
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" repro steps on how to trigger this bug. pc = 0x%08"PRIx32"\n", |
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(uint32_t)cpu->pc); |
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cpu->running = 0; |
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cpu->running_translated = 0; |
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cpu->n_translated_instrs --; |
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cpu->cd.arm.next_ic = ¬hing_call; |
cpu->cd.arm.next_ic = ¬hing_call; |
224 |
} |
} |
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/* |
/* |
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* nop: Do nothing. |
229 |
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*/ |
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X(nop) |
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{ |
232 |
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} |
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/* |
236 |
* b: Branch (to a different translated page) |
* b: Branch (to a different translated page) |
237 |
* |
* |
238 |
* arg[0] = relative offset |
* arg[0] = relative offset |
239 |
*/ |
*/ |
240 |
X(b) |
X(b) |
241 |
{ |
{ |
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uint32_t low_pc; |
cpu->pc = (uint32_t)((cpu->pc & 0xfffff000) + (int32_t)ic->arg[0]); |
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/* Calculate new PC from this instruction + arg[0] */ |
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low_pc = ((size_t)ic - (size_t) |
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cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
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cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
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<< ARM_INSTR_ALIGNMENT_SHIFT); |
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cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
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cpu->cd.arm.r[ARM_PC] += (int32_t)ic->arg[0]; |
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cpu->pc = cpu->cd.arm.r[ARM_PC]; |
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/* Find the new physical page and update the translation pointers: */ |
/* Find the new physical page and update the translation pointers: */ |
245 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
246 |
} |
} |
247 |
Y(b) |
Y(b) |
248 |
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* b_samepage: Branch (to within the same translated page) |
* b_samepage: Branch (to within the same translated page) |
252 |
* |
* |
253 |
* arg[0] = pointer to new arm_instr_call |
* arg[0] = pointer to new arm_instr_call |
254 |
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* arg[1] = pointer to the next instruction. |
255 |
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* |
256 |
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* NOTE: This instruction is manually inlined. |
257 |
*/ |
*/ |
258 |
X(b_samepage) |
X(b_samepage) { |
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{ |
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259 |
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic->arg[0]; |
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic->arg[0]; |
260 |
} |
} |
261 |
Y(b_samepage) |
X(b_samepage__eq) { |
262 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
263 |
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ic->arg[cpu->cd.arm.flags & ARM_F_Z? 0 : 1]; |
264 |
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} |
265 |
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X(b_samepage__ne) { |
266 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
267 |
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ic->arg[cpu->cd.arm.flags & ARM_F_Z? 1 : 0]; |
268 |
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} |
269 |
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X(b_samepage__cs) { |
270 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
271 |
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ic->arg[cpu->cd.arm.flags & ARM_F_C? 0 : 1]; |
272 |
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} |
273 |
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X(b_samepage__cc) { |
274 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
275 |
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ic->arg[cpu->cd.arm.flags & ARM_F_C? 1 : 0]; |
276 |
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} |
277 |
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X(b_samepage__mi) { |
278 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
279 |
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ic->arg[cpu->cd.arm.flags & ARM_F_N? 0 : 1]; |
280 |
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} |
281 |
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X(b_samepage__pl) { |
282 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
283 |
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ic->arg[cpu->cd.arm.flags & ARM_F_N? 1 : 0]; |
284 |
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} |
285 |
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X(b_samepage__vs) { |
286 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
287 |
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ic->arg[cpu->cd.arm.flags & ARM_F_V? 0 : 1]; |
288 |
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} |
289 |
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X(b_samepage__vc) { |
290 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
291 |
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ic->arg[cpu->cd.arm.flags & ARM_F_V? 1 : 0]; |
292 |
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} |
293 |
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X(b_samepage__hi) { |
294 |
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cpu->cd.arm.next_ic = (condition_hi[cpu->cd.arm.flags])? |
295 |
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(struct arm_instr_call *) ic->arg[0] : |
296 |
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(struct arm_instr_call *) ic->arg[1]; |
297 |
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} |
298 |
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X(b_samepage__ls) { |
299 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
300 |
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ic->arg[condition_hi[cpu->cd.arm.flags]]; |
301 |
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} |
302 |
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X(b_samepage__ge) { |
303 |
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cpu->cd.arm.next_ic = (condition_ge[cpu->cd.arm.flags])? |
304 |
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(struct arm_instr_call *) ic->arg[0] : |
305 |
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(struct arm_instr_call *) ic->arg[1]; |
306 |
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} |
307 |
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X(b_samepage__lt) { |
308 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
309 |
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ic->arg[condition_ge[cpu->cd.arm.flags]]; |
310 |
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} |
311 |
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X(b_samepage__gt) { |
312 |
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cpu->cd.arm.next_ic = (condition_gt[cpu->cd.arm.flags])? |
313 |
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(struct arm_instr_call *) ic->arg[0] : |
314 |
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(struct arm_instr_call *) ic->arg[1]; |
315 |
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} |
316 |
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X(b_samepage__le) { |
317 |
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cpu->cd.arm.next_ic = (struct arm_instr_call *) |
318 |
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ic->arg[condition_gt[cpu->cd.arm.flags]]; |
319 |
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} |
320 |
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void (*arm_cond_instr_b_samepage[16])(struct cpu *, |
321 |
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struct arm_instr_call *) = { |
322 |
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arm_instr_b_samepage__eq, arm_instr_b_samepage__ne, |
323 |
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arm_instr_b_samepage__cs, arm_instr_b_samepage__cc, |
324 |
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arm_instr_b_samepage__mi, arm_instr_b_samepage__pl, |
325 |
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arm_instr_b_samepage__vs, arm_instr_b_samepage__vc, |
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arm_instr_b_samepage__hi, arm_instr_b_samepage__ls, |
327 |
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arm_instr_b_samepage__ge, arm_instr_b_samepage__lt, |
328 |
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arm_instr_b_samepage__gt, arm_instr_b_samepage__le, |
329 |
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arm_instr_b_samepage, arm_instr_nop }; |
330 |
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331 |
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332 |
/* |
/* |
336 |
*/ |
*/ |
337 |
X(bx) |
X(bx) |
338 |
{ |
{ |
339 |
cpu->pc = cpu->cd.arm.r[ARM_PC] = reg(ic->arg[0]); |
cpu->pc = reg(ic->arg[0]); |
340 |
if (cpu->pc & 1) { |
if (cpu->pc & 1) { |
341 |
fatal("thumb: TODO\n"); |
fatal("thumb: TODO\n"); |
342 |
exit(1); |
exit(1); |
344 |
cpu->pc &= ~3; |
cpu->pc &= ~3; |
345 |
|
|
346 |
/* Find the new physical page and update the translation pointers: */ |
/* Find the new physical page and update the translation pointers: */ |
347 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
348 |
} |
} |
349 |
Y(bx) |
Y(bx) |
350 |
|
|
356 |
*/ |
*/ |
357 |
X(bx_trace) |
X(bx_trace) |
358 |
{ |
{ |
359 |
cpu->pc = cpu->cd.arm.r[ARM_PC] = cpu->cd.arm.r[ARM_LR]; |
cpu->pc = cpu->cd.arm.r[ARM_LR]; |
360 |
if (cpu->pc & 1) { |
if (cpu->pc & 1) { |
361 |
fatal("thumb: TODO\n"); |
fatal("thumb: TODO\n"); |
362 |
exit(1); |
exit(1); |
366 |
cpu_functioncall_trace_return(cpu); |
cpu_functioncall_trace_return(cpu); |
367 |
|
|
368 |
/* Find the new physical page and update the translation pointers: */ |
/* Find the new physical page and update the translation pointers: */ |
369 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
370 |
} |
} |
371 |
Y(bx_trace) |
Y(bx_trace) |
372 |
|
|
378 |
*/ |
*/ |
379 |
X(bl) |
X(bl) |
380 |
{ |
{ |
381 |
uint32_t lr, low_pc; |
uint32_t pc = ((uint32_t)cpu->pc & 0xfffff000) + (int32_t)ic->arg[1]; |
382 |
|
cpu->cd.arm.r[ARM_LR] = pc + 4; |
|
/* Figure out what the return (link) address will be: */ |
|
|
low_pc = ((size_t)cpu->cd.arm.next_ic - (size_t) |
|
|
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
|
|
lr = cpu->cd.arm.r[ARM_PC]; |
|
|
lr &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
lr += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
|
|
|
/* Link: */ |
|
|
cpu->cd.arm.r[ARM_LR] = lr; |
|
383 |
|
|
384 |
/* Calculate new PC from this instruction + arg[0] */ |
/* Calculate new PC from this instruction + arg[0] */ |
385 |
cpu->pc = cpu->cd.arm.r[ARM_PC] = lr - 4 + (int32_t)ic->arg[0]; |
cpu->pc = pc + (int32_t)ic->arg[0]; |
386 |
|
|
387 |
/* Find the new physical page and update the translation pointers: */ |
/* Find the new physical page and update the translation pointers: */ |
388 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
389 |
} |
} |
390 |
Y(bl) |
Y(bl) |
391 |
|
|
397 |
*/ |
*/ |
398 |
X(blx) |
X(blx) |
399 |
{ |
{ |
400 |
uint32_t lr, low_pc; |
uint32_t lr = ((uint32_t)cpu->pc & 0xfffff000) + (int32_t)ic->arg[2]; |
|
|
|
|
/* Figure out what the return (link) address will be: */ |
|
|
low_pc = ((size_t)cpu->cd.arm.next_ic - (size_t) |
|
|
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
|
|
lr = cpu->cd.arm.r[ARM_PC]; |
|
|
lr &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
lr += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
|
|
|
/* Link: */ |
|
401 |
cpu->cd.arm.r[ARM_LR] = lr; |
cpu->cd.arm.r[ARM_LR] = lr; |
402 |
|
cpu->pc = reg(ic->arg[0]); |
|
cpu->pc = cpu->cd.arm.r[ARM_PC] = reg(ic->arg[0]); |
|
403 |
if (cpu->pc & 1) { |
if (cpu->pc & 1) { |
404 |
fatal("thumb: TODO\n"); |
fatal("thumb: TODO\n"); |
405 |
exit(1); |
exit(1); |
407 |
cpu->pc &= ~3; |
cpu->pc &= ~3; |
408 |
|
|
409 |
/* Find the new physical page and update the translation pointers: */ |
/* Find the new physical page and update the translation pointers: */ |
410 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
411 |
} |
} |
412 |
Y(blx) |
Y(blx) |
413 |
|
|
419 |
*/ |
*/ |
420 |
X(bl_trace) |
X(bl_trace) |
421 |
{ |
{ |
422 |
uint32_t lr, low_pc; |
uint32_t pc = ((uint32_t)cpu->pc & 0xfffff000) + (int32_t)ic->arg[1]; |
423 |
|
cpu->cd.arm.r[ARM_LR] = pc + 4; |
|
/* Figure out what the return (link) address will be: */ |
|
|
low_pc = ((size_t)cpu->cd.arm.next_ic - (size_t) |
|
|
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
|
|
lr = cpu->cd.arm.r[ARM_PC]; |
|
|
lr &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
lr += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
|
|
|
/* Link: */ |
|
|
cpu->cd.arm.r[ARM_LR] = lr; |
|
424 |
|
|
425 |
/* Calculate new PC from this instruction + arg[0] */ |
/* Calculate new PC from this instruction + arg[0] */ |
426 |
cpu->pc = cpu->cd.arm.r[ARM_PC] = lr - 4 + (int32_t)ic->arg[0]; |
cpu->pc = pc + (int32_t)ic->arg[0]; |
427 |
|
|
428 |
cpu_functioncall_trace(cpu, cpu->pc); |
cpu_functioncall_trace(cpu, cpu->pc); |
429 |
|
|
430 |
/* Find the new physical page and update the translation pointers: */ |
/* Find the new physical page and update the translation pointers: */ |
431 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
432 |
} |
} |
433 |
Y(bl_trace) |
Y(bl_trace) |
434 |
|
|
440 |
*/ |
*/ |
441 |
X(bl_samepage) |
X(bl_samepage) |
442 |
{ |
{ |
443 |
uint32_t lr, low_pc; |
cpu->cd.arm.r[ARM_LR] = |
444 |
|
((uint32_t)cpu->pc & 0xfffff000) + (int32_t)ic->arg[2]; |
|
/* Figure out what the return (link) address will be: */ |
|
|
low_pc = ((size_t)cpu->cd.arm.next_ic - (size_t) |
|
|
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
|
|
lr = cpu->cd.arm.r[ARM_PC]; |
|
|
lr &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
lr += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
|
|
|
/* Link: */ |
|
|
cpu->cd.arm.r[ARM_LR] = lr; |
|
|
|
|
|
/* Branch: */ |
|
445 |
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic->arg[0]; |
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic->arg[0]; |
446 |
} |
} |
447 |
Y(bl_samepage) |
Y(bl_samepage) |
454 |
*/ |
*/ |
455 |
X(bl_samepage_trace) |
X(bl_samepage_trace) |
456 |
{ |
{ |
457 |
uint32_t tmp_pc, lr, low_pc; |
uint32_t low_pc, lr = (cpu->pc & 0xfffff000) + ic->arg[2]; |
458 |
|
|
459 |
/* Figure out what the return (link) address will be: */ |
/* Link and branch: */ |
|
low_pc = ((size_t)cpu->cd.arm.next_ic - (size_t) |
|
|
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
|
|
lr = cpu->cd.arm.r[ARM_PC]; |
|
|
lr &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
lr += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
|
|
|
/* Link: */ |
|
460 |
cpu->cd.arm.r[ARM_LR] = lr; |
cpu->cd.arm.r[ARM_LR] = lr; |
|
|
|
|
/* Branch: */ |
|
461 |
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic->arg[0]; |
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic->arg[0]; |
462 |
|
|
463 |
|
/* Synchronize the program counter: */ |
464 |
low_pc = ((size_t)cpu->cd.arm.next_ic - (size_t) |
low_pc = ((size_t)cpu->cd.arm.next_ic - (size_t) |
465 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
466 |
tmp_pc = cpu->cd.arm.r[ARM_PC]; |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
|
tmp_pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
|
467 |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
468 |
tmp_pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
469 |
cpu_functioncall_trace(cpu, tmp_pc); |
|
470 |
|
/* ... and show trace: */ |
471 |
|
cpu_functioncall_trace(cpu, cpu->pc); |
472 |
} |
} |
473 |
Y(bl_samepage_trace) |
Y(bl_samepage_trace) |
474 |
|
|
475 |
|
|
476 |
/* |
/* |
477 |
|
* clz: Count leading zeroes. |
478 |
|
* |
479 |
|
* arg[0] = ptr to rm |
480 |
|
* arg[1] = ptr to rd |
481 |
|
*/ |
482 |
|
X(clz) |
483 |
|
{ |
484 |
|
uint32_t rm = reg(ic->arg[0]); |
485 |
|
int i = 32, n = 0, j; |
486 |
|
while (i>0) { |
487 |
|
if (rm & 0xff000000) { |
488 |
|
for (j=0; j<8; j++) { |
489 |
|
if (rm & 0x80000000) |
490 |
|
break; |
491 |
|
n ++; |
492 |
|
rm <<= 1; |
493 |
|
} |
494 |
|
break; |
495 |
|
} else { |
496 |
|
rm <<= 8; |
497 |
|
i -= 8; |
498 |
|
n += 8; |
499 |
|
} |
500 |
|
} |
501 |
|
reg(ic->arg[1]) = n; |
502 |
|
} |
503 |
|
Y(clz) |
504 |
|
|
505 |
|
|
506 |
|
/* |
507 |
* mul: Multiplication |
* mul: Multiplication |
508 |
* |
* |
509 |
* arg[0] = ptr to rd |
* arg[0] = ptr to rd |
517 |
Y(mul) |
Y(mul) |
518 |
X(muls) |
X(muls) |
519 |
{ |
{ |
520 |
uint32_t result = reg(ic->arg[1]) * reg(ic->arg[2]); |
uint32_t result; |
521 |
cpu->cd.arm.cpsr &= ~(ARM_FLAG_Z | ARM_FLAG_N); |
result = reg(ic->arg[1]) * reg(ic->arg[2]); |
522 |
|
cpu->cd.arm.flags &= ~(ARM_F_Z | ARM_F_N); |
523 |
if (result == 0) |
if (result == 0) |
524 |
cpu->cd.arm.cpsr |= ARM_FLAG_Z; |
cpu->cd.arm.flags |= ARM_F_Z; |
525 |
if (result & 0x80000000) |
if (result & 0x80000000) |
526 |
cpu->cd.arm.cpsr |= ARM_FLAG_N; |
cpu->cd.arm.flags |= ARM_F_N; |
527 |
reg(ic->arg[0]) = result; |
reg(ic->arg[0]) = result; |
528 |
} |
} |
529 |
Y(muls) |
Y(muls) |
538 |
{ |
{ |
539 |
/* xxxx0000 00ASdddd nnnnssss 1001mmmm (Rd,Rm,Rs[,Rn]) */ |
/* xxxx0000 00ASdddd nnnnssss 1001mmmm (Rd,Rm,Rs[,Rn]) */ |
540 |
uint32_t iw = ic->arg[0]; |
uint32_t iw = ic->arg[0]; |
541 |
int rd = (iw >> 16) & 15, rn = (iw >> 12) & 15, |
int rd, rs, rn, rm; |
542 |
rs = (iw >> 8) & 15, rm = iw & 15; |
rd = (iw >> 16) & 15; rn = (iw >> 12) & 15, |
543 |
|
rs = (iw >> 8) & 15; rm = iw & 15; |
544 |
cpu->cd.arm.r[rd] = cpu->cd.arm.r[rm] * cpu->cd.arm.r[rs] |
cpu->cd.arm.r[rd] = cpu->cd.arm.r[rm] * cpu->cd.arm.r[rs] |
545 |
+ cpu->cd.arm.r[rn]; |
+ cpu->cd.arm.r[rn]; |
546 |
} |
} |
549 |
{ |
{ |
550 |
/* xxxx0000 00ASdddd nnnnssss 1001mmmm (Rd,Rm,Rs[,Rn]) */ |
/* xxxx0000 00ASdddd nnnnssss 1001mmmm (Rd,Rm,Rs[,Rn]) */ |
551 |
uint32_t iw = ic->arg[0]; |
uint32_t iw = ic->arg[0]; |
552 |
int rd = (iw >> 16) & 15, rn = (iw >> 12) & 15, |
int rd, rs, rn, rm; |
553 |
rs = (iw >> 8) & 15, rm = iw & 15; |
rd = (iw >> 16) & 15; rn = (iw >> 12) & 15, |
554 |
|
rs = (iw >> 8) & 15; rm = iw & 15; |
555 |
cpu->cd.arm.r[rd] = cpu->cd.arm.r[rm] * cpu->cd.arm.r[rs] |
cpu->cd.arm.r[rd] = cpu->cd.arm.r[rm] * cpu->cd.arm.r[rs] |
556 |
+ cpu->cd.arm.r[rn]; |
+ cpu->cd.arm.r[rn]; |
557 |
cpu->cd.arm.cpsr &= ~(ARM_FLAG_Z | ARM_FLAG_N); |
cpu->cd.arm.flags &= ~(ARM_F_Z | ARM_F_N); |
558 |
if (cpu->cd.arm.r[rd] == 0) |
if (cpu->cd.arm.r[rd] == 0) |
559 |
cpu->cd.arm.cpsr |= ARM_FLAG_Z; |
cpu->cd.arm.flags |= ARM_F_Z; |
560 |
if (cpu->cd.arm.r[rd] & 0x80000000) |
if (cpu->cd.arm.r[rd] & 0x80000000) |
561 |
cpu->cd.arm.cpsr |= ARM_FLAG_N; |
cpu->cd.arm.flags |= ARM_F_N; |
562 |
} |
} |
563 |
Y(mlas) |
Y(mlas) |
564 |
|
|
571 |
X(mull) |
X(mull) |
572 |
{ |
{ |
573 |
/* xxxx0000 1UAShhhh llllssss 1001mmmm */ |
/* xxxx0000 1UAShhhh llllssss 1001mmmm */ |
574 |
uint32_t iw = ic->arg[0]; |
uint32_t iw; uint64_t tmp; int u_bit, a_bit; |
575 |
int u_bit = (iw >> 22) & 1, a_bit = (iw >> 21) & 1; |
iw = ic->arg[0]; |
576 |
uint64_t tmp = cpu->cd.arm.r[iw & 15]; |
u_bit = iw & 0x00400000; a_bit = iw & 0x00200000; |
577 |
|
tmp = cpu->cd.arm.r[iw & 15]; |
578 |
if (u_bit) |
if (u_bit) |
579 |
tmp = (int64_t)(int32_t)tmp |
tmp = (int64_t)(int32_t)tmp |
580 |
* (int64_t)(int32_t)cpu->cd.arm.r[(iw >> 8) & 15]; |
* (int64_t)(int32_t)cpu->cd.arm.r[(iw >> 8) & 15]; |
595 |
|
|
596 |
|
|
597 |
/* |
/* |
598 |
|
* smulXY: 16-bit * 16-bit multiplication (32-bit result) |
599 |
|
* |
600 |
|
* arg[0] = ptr to rm |
601 |
|
* arg[1] = ptr to rs |
602 |
|
* arg[2] = ptr to rd |
603 |
|
*/ |
604 |
|
X(smulbb) |
605 |
|
{ |
606 |
|
reg(ic->arg[2]) = (int32_t)(int16_t)reg(ic->arg[0]) * |
607 |
|
(int32_t)(int16_t)reg(ic->arg[1]); |
608 |
|
} |
609 |
|
Y(smulbb) |
610 |
|
X(smultb) |
611 |
|
{ |
612 |
|
reg(ic->arg[2]) = (int32_t)(int16_t)(reg(ic->arg[0]) >> 16) * |
613 |
|
(int32_t)(int16_t)reg(ic->arg[1]); |
614 |
|
} |
615 |
|
Y(smultb) |
616 |
|
X(smulbt) |
617 |
|
{ |
618 |
|
reg(ic->arg[2]) = (int32_t)(int16_t)reg(ic->arg[0]) * |
619 |
|
(int32_t)(int16_t)(reg(ic->arg[1]) >> 16); |
620 |
|
} |
621 |
|
Y(smulbt) |
622 |
|
X(smultt) |
623 |
|
{ |
624 |
|
reg(ic->arg[2]) = (int32_t)(int16_t)(reg(ic->arg[0]) >> 16) * |
625 |
|
(int32_t)(int16_t)(reg(ic->arg[1]) >> 16); |
626 |
|
} |
627 |
|
Y(smultt) |
628 |
|
|
629 |
|
|
630 |
|
/* |
631 |
* mov_reg_reg: Move a register to another. |
* mov_reg_reg: Move a register to another. |
632 |
* |
* |
633 |
* arg[0] = ptr to source register |
* arg[0] = ptr to source register |
641 |
|
|
642 |
|
|
643 |
/* |
/* |
644 |
|
* mov_reg_pc: Move the PC register to a normal register. |
645 |
|
* |
646 |
|
* arg[0] = offset compared to start of current page + 8 |
647 |
|
* arg[1] = ptr to destination register |
648 |
|
*/ |
649 |
|
X(mov_reg_pc) |
650 |
|
{ |
651 |
|
reg(ic->arg[1]) = ((uint32_t)cpu->pc&0xfffff000) + (int32_t)ic->arg[0]; |
652 |
|
} |
653 |
|
Y(mov_reg_pc) |
654 |
|
|
655 |
|
|
656 |
|
/* |
657 |
* ret_trace: "mov pc,lr" with trace enabled |
* ret_trace: "mov pc,lr" with trace enabled |
658 |
|
* ret: "mov pc,lr" without trace enabled |
659 |
* |
* |
660 |
* arg[0] = ignored |
* arg[0] = ignored |
661 |
*/ |
*/ |
662 |
X(ret_trace) |
X(ret_trace) |
663 |
{ |
{ |
664 |
uint32_t old_pc = cpu->cd.arm.r[ARM_PC]; |
uint32_t old_pc, mask_within_page; |
665 |
uint32_t mask_within_page = ((ARM_IC_ENTRIES_PER_PAGE-1) |
old_pc = cpu->pc; |
666 |
|
mask_within_page = ((ARM_IC_ENTRIES_PER_PAGE-1) |
667 |
<< ARM_INSTR_ALIGNMENT_SHIFT) | |
<< ARM_INSTR_ALIGNMENT_SHIFT) | |
668 |
((1 << ARM_INSTR_ALIGNMENT_SHIFT) - 1); |
((1 << ARM_INSTR_ALIGNMENT_SHIFT) - 1); |
669 |
|
|
670 |
/* Update the PC register: */ |
/* Update the PC register: */ |
671 |
cpu->pc = cpu->cd.arm.r[ARM_PC] = cpu->cd.arm.r[ARM_LR]; |
cpu->pc = cpu->cd.arm.r[ARM_LR]; |
672 |
|
|
673 |
cpu_functioncall_trace_return(cpu); |
cpu_functioncall_trace_return(cpu); |
674 |
|
|
681 |
((cpu->pc & mask_within_page) >> ARM_INSTR_ALIGNMENT_SHIFT); |
((cpu->pc & mask_within_page) >> ARM_INSTR_ALIGNMENT_SHIFT); |
682 |
} else { |
} else { |
683 |
/* Find the new physical page and update pointers: */ |
/* Find the new physical page and update pointers: */ |
684 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
685 |
} |
} |
686 |
} |
} |
687 |
Y(ret_trace) |
Y(ret_trace) |
688 |
|
X(ret) |
689 |
|
{ |
690 |
|
cpu->pc = cpu->cd.arm.r[ARM_LR]; |
691 |
|
quick_pc_to_pointers(cpu); |
692 |
|
} |
693 |
|
Y(ret) |
694 |
|
|
695 |
|
|
696 |
/* |
/* |
711 |
(ic->arg[0] & ARM_FLAG_MODE)); |
(ic->arg[0] & ARM_FLAG_MODE)); |
712 |
uint32_t new_value = ic->arg[0]; |
uint32_t new_value = ic->arg[0]; |
713 |
|
|
714 |
|
cpu->cd.arm.cpsr &= 0x0fffffff; |
715 |
|
cpu->cd.arm.cpsr |= (cpu->cd.arm.flags << 28); |
716 |
|
|
717 |
if (switch_register_banks) |
if (switch_register_banks) |
718 |
arm_save_register_bank(cpu); |
arm_save_register_bank(cpu); |
719 |
|
|
720 |
cpu->cd.arm.cpsr &= ~mask; |
cpu->cd.arm.cpsr &= ~mask; |
721 |
cpu->cd.arm.cpsr |= (new_value & mask); |
cpu->cd.arm.cpsr |= (new_value & mask); |
722 |
|
|
723 |
|
cpu->cd.arm.flags = cpu->cd.arm.cpsr >> 28; |
724 |
|
|
725 |
if (switch_register_banks) |
if (switch_register_banks) |
726 |
arm_load_register_bank(cpu); |
arm_load_register_bank(cpu); |
727 |
} |
} |
763 |
/* Synchronize the program counter: */ |
/* Synchronize the program counter: */ |
764 |
uint32_t old_pc, low_pc = ((size_t)ic - (size_t) |
uint32_t old_pc, low_pc = ((size_t)ic - (size_t) |
765 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
766 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
767 |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
768 |
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
old_pc = cpu->pc; |
769 |
old_pc = cpu->pc = cpu->cd.arm.r[ARM_PC]; |
printf("msr_spsr: old pc = 0x%08"PRIx32"\n", old_pc); |
|
printf("msr_spsr: old pc = 0x%08x\n", old_pc); |
|
770 |
} |
} |
771 |
exit(1); |
exit(1); |
772 |
} |
} |
787 |
*/ |
*/ |
788 |
X(mrs) |
X(mrs) |
789 |
{ |
{ |
790 |
|
cpu->cd.arm.cpsr &= 0x0fffffff; |
791 |
|
cpu->cd.arm.cpsr |= (cpu->cd.arm.flags << 28); |
792 |
reg(ic->arg[0]) = cpu->cd.arm.cpsr; |
reg(ic->arg[0]) = cpu->cd.arm.cpsr; |
793 |
} |
} |
794 |
Y(mrs) |
Y(mrs) |
795 |
|
|
796 |
|
|
797 |
/* |
/* |
798 |
* mrs: Move from status/flag register to a normal register. |
* mrs: Move from saved status/flag register to a normal register. |
799 |
* |
* |
800 |
* arg[0] = pointer to rd |
* arg[0] = pointer to rd |
801 |
*/ |
*/ |
824 |
* arg[0] = copy of the instruction word |
* arg[0] = copy of the instruction word |
825 |
*/ |
*/ |
826 |
X(mcr_mrc) { |
X(mcr_mrc) { |
827 |
uint32_t low_pc; |
uint32_t low_pc = ((size_t)ic - (size_t) |
|
low_pc = ((size_t)ic - (size_t) |
|
828 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
829 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
830 |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
831 |
arm_mcr_mrc(cpu, ic->arg[0]); |
arm_mcr_mrc(cpu, ic->arg[0]); |
832 |
} |
} |
833 |
Y(mcr_mrc) |
Y(mcr_mrc) |
834 |
X(cdp) { |
X(cdp) { |
835 |
uint32_t low_pc; |
uint32_t low_pc = ((size_t)ic - (size_t) |
|
low_pc = ((size_t)ic - (size_t) |
|
836 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
837 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
838 |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
839 |
arm_cdp(cpu, ic->arg[0]); |
arm_cdp(cpu, ic->arg[0]); |
840 |
} |
} |
841 |
Y(cdp) |
Y(cdp) |
846 |
*/ |
*/ |
847 |
X(openfirmware) |
X(openfirmware) |
848 |
{ |
{ |
849 |
|
/* TODO: sync pc? */ |
850 |
of_emul(cpu); |
of_emul(cpu); |
851 |
cpu->pc = cpu->cd.arm.r[ARM_PC] = cpu->cd.arm.r[ARM_LR]; |
cpu->pc = cpu->cd.arm.r[ARM_LR]; |
852 |
if (cpu->machine->show_trace_tree) |
if (cpu->machine->show_trace_tree) |
853 |
cpu_functioncall_trace_return(cpu); |
cpu_functioncall_trace_return(cpu); |
854 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
855 |
|
} |
856 |
|
|
857 |
|
|
858 |
|
/* |
859 |
|
* reboot: |
860 |
|
*/ |
861 |
|
X(reboot) |
862 |
|
{ |
863 |
|
cpu->running = 0; |
864 |
|
cpu->n_translated_instrs --; |
865 |
|
cpu->cd.arm.next_ic = ¬hing_call; |
866 |
} |
} |
867 |
|
|
868 |
|
|
876 |
/* Synchronize the program counter: */ |
/* Synchronize the program counter: */ |
877 |
uint32_t old_pc, low_pc = ((size_t)ic - (size_t) |
uint32_t old_pc, low_pc = ((size_t)ic - (size_t) |
878 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
879 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
880 |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
881 |
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
882 |
old_pc = cpu->pc = cpu->cd.arm.r[ARM_PC]; |
old_pc = cpu->pc; |
883 |
|
|
884 |
useremul_syscall(cpu, ic->arg[0]); |
useremul_syscall(cpu, ic->arg[0]); |
885 |
|
|
886 |
if (!cpu->running) { |
if (!cpu->running) { |
|
cpu->running_translated = 0; |
|
887 |
cpu->n_translated_instrs --; |
cpu->n_translated_instrs --; |
888 |
cpu->cd.arm.next_ic = ¬hing_call; |
cpu->cd.arm.next_ic = ¬hing_call; |
889 |
} else if (cpu->pc != old_pc) { |
} else if (cpu->pc != old_pc) { |
890 |
/* PC was changed by the SWI call. Find the new physical |
/* PC was changed by the SWI call. Find the new physical |
891 |
page and update the translation pointers: */ |
page and update the translation pointers: */ |
892 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
893 |
} |
} |
894 |
} |
} |
895 |
Y(swi_useremul) |
Y(swi_useremul) |
900 |
*/ |
*/ |
901 |
X(swi) |
X(swi) |
902 |
{ |
{ |
903 |
/* Synchronize the program counter: */ |
/* Synchronize the program counter first: */ |
904 |
uint32_t low_pc = ((size_t)ic - (size_t) |
cpu->pc &= 0xfffff000; |
905 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->pc += ic->arg[0]; |
|
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
|
|
<< ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
|
|
|
906 |
arm_exception(cpu, ARM_EXCEPTION_SWI); |
arm_exception(cpu, ARM_EXCEPTION_SWI); |
907 |
} |
} |
908 |
Y(swi) |
Y(swi) |
909 |
|
|
910 |
|
|
911 |
/* |
/* |
912 |
|
* und: Undefined instruction. |
913 |
|
*/ |
914 |
|
X(und) |
915 |
|
{ |
916 |
|
/* Synchronize the program counter first: */ |
917 |
|
cpu->pc &= 0xfffff000; |
918 |
|
cpu->pc += ic->arg[0]; |
919 |
|
arm_exception(cpu, ARM_EXCEPTION_UND); |
920 |
|
} |
921 |
|
Y(und) |
922 |
|
|
923 |
|
|
924 |
|
/* |
925 |
* swp, swpb: Swap (word or byte). |
* swp, swpb: Swap (word or byte). |
926 |
* |
* |
927 |
* arg[0] = ptr to rd |
* arg[0] = ptr to rd |
932 |
{ |
{ |
933 |
uint32_t addr = reg(ic->arg[2]), data, data2; |
uint32_t addr = reg(ic->arg[2]), data, data2; |
934 |
unsigned char d[4]; |
unsigned char d[4]; |
935 |
|
|
936 |
/* Synchronize the program counter: */ |
/* Synchronize the program counter: */ |
937 |
uint32_t low_pc = ((size_t)ic - (size_t) |
uint32_t low_pc = ((size_t)ic - (size_t) |
938 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
939 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
940 |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
941 |
|
|
942 |
if (!cpu->memory_rw(cpu, cpu->mem, addr, d, sizeof(d), MEM_READ, |
if (!cpu->memory_rw(cpu, cpu->mem, addr, d, sizeof(d), MEM_READ, |
943 |
CACHE_DATA)) { |
CACHE_DATA)) { |
959 |
{ |
{ |
960 |
uint32_t addr = reg(ic->arg[2]), data; |
uint32_t addr = reg(ic->arg[2]), data; |
961 |
unsigned char d[1]; |
unsigned char d[1]; |
962 |
|
|
963 |
/* Synchronize the program counter: */ |
/* Synchronize the program counter: */ |
964 |
uint32_t low_pc = ((size_t)ic - (size_t) |
uint32_t low_pc = ((size_t)ic - (size_t) |
965 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
966 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
967 |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
968 |
|
|
969 |
if (!cpu->memory_rw(cpu, cpu->mem, addr, d, sizeof(d), MEM_READ, |
if (!cpu->memory_rw(cpu, cpu->mem, addr, d, sizeof(d), MEM_READ, |
970 |
CACHE_DATA)) { |
CACHE_DATA)) { |
985 |
|
|
986 |
extern void (*arm_load_store_instr[1024])(struct cpu *, |
extern void (*arm_load_store_instr[1024])(struct cpu *, |
987 |
struct arm_instr_call *); |
struct arm_instr_call *); |
988 |
|
X(store_w1_word_u1_p0_imm); |
989 |
X(store_w0_byte_u1_p0_imm); |
X(store_w0_byte_u1_p0_imm); |
990 |
X(store_w0_word_u1_p0_imm); |
X(store_w0_word_u1_p0_imm); |
991 |
|
X(store_w0_word_u1_p1_imm); |
992 |
|
X(load_w1_word_u1_p0_imm); |
993 |
|
X(load_w0_word_u1_p0_imm); |
994 |
|
X(load_w0_byte_u1_p1_imm); |
995 |
|
X(load_w0_byte_u1_p1_reg); |
996 |
|
X(load_w1_byte_u1_p1_imm); |
997 |
|
|
998 |
extern void (*arm_load_store_instr_pc[1024])(struct cpu *, |
extern void (*arm_load_store_instr_pc[1024])(struct cpu *, |
999 |
struct arm_instr_call *); |
struct arm_instr_call *); |
1005 |
struct arm_instr_call *); |
struct arm_instr_call *); |
1006 |
|
|
1007 |
extern uint32_t (*arm_r[8192])(struct cpu *, struct arm_instr_call *); |
extern uint32_t (*arm_r[8192])(struct cpu *, struct arm_instr_call *); |
1008 |
|
extern void arm_r_r3_t0_c0(void); |
1009 |
|
|
1010 |
extern void (*arm_dpi_instr[2 * 2 * 2 * 16 * 16])(struct cpu *, |
extern void (*arm_dpi_instr[2 * 2 * 2 * 16 * 16])(struct cpu *, |
1011 |
struct arm_instr_call *); |
struct arm_instr_call *); |
1012 |
|
extern void (*arm_dpi_instr_regshort[2 * 16 * 16])(struct cpu *, |
1013 |
|
struct arm_instr_call *); |
1014 |
X(cmps); |
X(cmps); |
1015 |
|
X(teqs); |
1016 |
|
X(tsts); |
1017 |
X(sub); |
X(sub); |
1018 |
|
X(add); |
1019 |
X(subs); |
X(subs); |
1020 |
|
X(eor_regshort); |
1021 |
|
X(cmps_regshort); |
1022 |
|
|
1023 |
|
|
1024 |
|
#include "cpu_arm_instr_misc.c" |
1025 |
|
|
1026 |
|
|
1027 |
/* |
/* |
1028 |
* bdt_load: Block Data Transfer, Load |
* bdt_load: Block Data Transfer, Load |
1044 |
int i, return_flag = 0; |
int i, return_flag = 0; |
1045 |
uint32_t new_values[16]; |
uint32_t new_values[16]; |
1046 |
|
|
1047 |
|
#ifdef GATHER_BDT_STATISTICS |
1048 |
|
if (!s_bit) |
1049 |
|
update_bdt_statistics(iw); |
1050 |
|
#endif |
1051 |
|
|
1052 |
/* Synchronize the program counter: */ |
/* Synchronize the program counter: */ |
1053 |
low_pc = ((size_t)ic - (size_t) |
low_pc = ((size_t)ic - (size_t) |
1054 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
1055 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
1056 |
ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
1057 |
|
|
1058 |
if (s_bit) { |
if (s_bit) { |
1059 |
/* Load to USR registers: */ |
/* Load to USR registers: */ |
1189 |
arm_save_register_bank(cpu); |
arm_save_register_bank(cpu); |
1190 |
|
|
1191 |
cpu->cd.arm.cpsr = new_cpsr; |
cpu->cd.arm.cpsr = new_cpsr; |
1192 |
|
cpu->cd.arm.flags = cpu->cd.arm.cpsr >> 28; |
1193 |
|
|
1194 |
if (switch_register_banks) |
if (switch_register_banks) |
1195 |
arm_load_register_bank(cpu); |
arm_load_register_bank(cpu); |
1197 |
|
|
1198 |
/* NOTE: Special case: Loading the PC */ |
/* NOTE: Special case: Loading the PC */ |
1199 |
if (iw & 0x8000) { |
if (iw & 0x8000) { |
1200 |
cpu->cd.arm.r[ARM_PC] &= ~3; |
cpu->pc = cpu->cd.arm.r[ARM_PC] & 0xfffffffc; |
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
1201 |
if (cpu->machine->show_trace_tree) |
if (cpu->machine->show_trace_tree) |
1202 |
cpu_functioncall_trace_return(cpu); |
cpu_functioncall_trace_return(cpu); |
1203 |
/* TODO: There is no need to update the |
/* TODO: There is no need to update the |
1205 |
same page! */ |
same page! */ |
1206 |
/* Find the new physical page and update the |
/* Find the new physical page and update the |
1207 |
translation pointers: */ |
translation pointers: */ |
1208 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
1209 |
} |
} |
1210 |
} |
} |
1211 |
Y(bdt_load) |
Y(bdt_load) |
1230 |
int w_bit = iw & 0x00200000; |
int w_bit = iw & 0x00200000; |
1231 |
int i; |
int i; |
1232 |
|
|
1233 |
|
#ifdef GATHER_BDT_STATISTICS |
1234 |
|
if (!s_bit) |
1235 |
|
update_bdt_statistics(iw); |
1236 |
|
#endif |
1237 |
|
|
1238 |
/* Synchronize the program counter: */ |
/* Synchronize the program counter: */ |
1239 |
low_pc = ((size_t)ic - (size_t) |
low_pc = ((size_t)ic - (size_t) |
1240 |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
cpu->cd.arm.cur_ic_page) / sizeof(struct arm_instr_call); |
1241 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
1242 |
ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
cpu->cd.arm.r[ARM_PC] += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
1243 |
|
|
1244 |
for (i=(u_bit? 0 : 15); i>=0 && i<=15; i+=(u_bit? 1 : -1)) { |
for (i=(u_bit? 0 : 15); i>=0 && i<=15; i+=(u_bit? 1 : -1)) { |
1245 |
if (!((iw >> i) & 1)) { |
if (!((iw >> i) & 1)) { |
1268 |
} |
} |
1269 |
} |
} |
1270 |
|
|
1271 |
|
/* NOTE/TODO: 8 vs 12 on some ARMs */ |
1272 |
if (i == ARM_PC) |
if (i == ARM_PC) |
1273 |
value += 12; /* NOTE/TODO: 8 on some ARMs */ |
value = cpu->pc + 12; |
1274 |
|
|
1275 |
if (p_bit) { |
if (p_bit) { |
1276 |
if (u_bit) |
if (u_bit) |
1327 |
Y(bdt_store) |
Y(bdt_store) |
1328 |
|
|
1329 |
|
|
1330 |
|
/* Various load/store multiple instructions: */ |
1331 |
|
extern uint32_t *multi_opcode[256]; |
1332 |
|
extern void (**multi_opcode_f[256])(struct cpu *, struct arm_instr_call *); |
1333 |
|
X(multi_0x08b15018); |
1334 |
|
X(multi_0x08ac000c__ge); |
1335 |
|
X(multi_0x08a05018); |
1336 |
|
|
1337 |
|
|
1338 |
/*****************************************************************************/ |
/*****************************************************************************/ |
1339 |
|
|
1340 |
|
|
1341 |
/* |
/* |
1342 |
* fill_loop_test: |
* netbsd_memset: |
1343 |
* |
* |
1344 |
* A byte-fill loop. Fills at most one page at a time. If the page was not |
* The core of a NetBSD/arm memset. |
|
* in the host_store table, then the original sequence (beginning with |
|
|
* cmps rZ,#0) is executed instead. |
|
1345 |
* |
* |
1346 |
* L: cmps rZ,#0 ic[0] |
* f01bc420: e25XX080 subs rX,rX,#0x80 |
1347 |
* strb rX,[rY],#1 ic[1] |
* f01bc424: a8ac000c stmgeia ip!,{r2,r3} (16 of these) |
1348 |
* sub rZ,rZ,#1 ic[2] |
* .. |
1349 |
* bgt L ic[3] |
* f01bc464: caffffed bgt 0xf01bc420 <memset+0x38> |
|
* |
|
|
* A maximum of 4 pages are filled before returning. |
|
1350 |
*/ |
*/ |
1351 |
X(fill_loop_test) |
X(netbsd_memset) |
1352 |
{ |
{ |
|
int max_pages_left = 4; |
|
|
uint32_t addr, a, n, ofs, maxlen; |
|
|
uint32_t *rzp = (uint32_t *)(size_t)ic[0].arg[0]; |
|
1353 |
unsigned char *page; |
unsigned char *page; |
1354 |
|
uint32_t addr; |
1355 |
|
|
1356 |
|
do { |
1357 |
|
addr = cpu->cd.arm.r[ARM_IP]; |
1358 |
|
|
1359 |
|
instr(subs)(cpu, ic); |
1360 |
|
|
1361 |
|
if (((cpu->cd.arm.flags & ARM_F_N)?1:0) != |
1362 |
|
((cpu->cd.arm.flags & ARM_F_V)?1:0)) { |
1363 |
|
cpu->n_translated_instrs += 16; |
1364 |
|
/* Skip the store multiples: */ |
1365 |
|
cpu->cd.arm.next_ic = &ic[17]; |
1366 |
|
return; |
1367 |
|
} |
1368 |
|
|
1369 |
|
/* Crossing a page boundary? Then continue non-combined. */ |
1370 |
|
if ((addr & 0xfff) + 128 > 0x1000) |
1371 |
|
return; |
1372 |
|
|
1373 |
|
/* R2/R3 non-zero? Not allowed here. */ |
1374 |
|
if (cpu->cd.arm.r[2] != 0 || cpu->cd.arm.r[3] != 0) |
1375 |
|
return; |
1376 |
|
|
1377 |
|
/* printf("addr = 0x%08x\n", addr); */ |
1378 |
|
|
1379 |
|
page = cpu->cd.arm.host_store[addr >> 12]; |
1380 |
|
/* No page translation? Continue non-combined. */ |
1381 |
|
if (page == NULL) |
1382 |
|
return; |
1383 |
|
|
1384 |
|
/* Clear: */ |
1385 |
|
memset(page + (addr & 0xfff), 0, 128); |
1386 |
|
cpu->cd.arm.r[ARM_IP] = addr + 128; |
1387 |
|
cpu->n_translated_instrs += 16; |
1388 |
|
|
1389 |
|
/* Branch back if greater: */ |
1390 |
|
cpu->n_translated_instrs += 1; |
1391 |
|
} while (((cpu->cd.arm.flags & ARM_F_N)?1:0) == |
1392 |
|
((cpu->cd.arm.flags & ARM_F_V)?1:0) && |
1393 |
|
!(cpu->cd.arm.flags & ARM_F_Z)); |
1394 |
|
|
1395 |
|
/* Continue at the instruction after the bgt: */ |
1396 |
|
cpu->cd.arm.next_ic = &ic[18]; |
1397 |
|
} |
1398 |
|
|
1399 |
|
|
1400 |
|
/* |
1401 |
|
* netbsd_memcpy: |
1402 |
|
* |
1403 |
|
* The core of a NetBSD/arm memcpy. |
1404 |
|
* |
1405 |
|
* f01bc530: e8b15018 ldmia r1!,{r3,r4,ip,lr} |
1406 |
|
* f01bc534: e8a05018 stmia r0!,{r3,r4,ip,lr} |
1407 |
|
* f01bc538: e8b15018 ldmia r1!,{r3,r4,ip,lr} |
1408 |
|
* f01bc53c: e8a05018 stmia r0!,{r3,r4,ip,lr} |
1409 |
|
* f01bc540: e2522020 subs r2,r2,#0x20 |
1410 |
|
* f01bc544: aafffff9 bge 0xf01bc530 |
1411 |
|
*/ |
1412 |
|
X(netbsd_memcpy) |
1413 |
|
{ |
1414 |
|
unsigned char *page_0, *page_1; |
1415 |
|
uint32_t addr_r0, addr_r1; |
1416 |
|
|
1417 |
|
do { |
1418 |
|
addr_r0 = cpu->cd.arm.r[0]; |
1419 |
|
addr_r1 = cpu->cd.arm.r[1]; |
1420 |
|
|
1421 |
|
/* printf("addr_r0 = %08x r1 = %08x\n", addr_r0, addr_r1); */ |
1422 |
|
|
1423 |
|
/* Crossing a page boundary? Then continue non-combined. */ |
1424 |
|
if ((addr_r0 & 0xfff) + 32 > 0x1000 || |
1425 |
|
(addr_r1 & 0xfff) + 32 > 0x1000) { |
1426 |
|
instr(multi_0x08b15018)(cpu, ic); |
1427 |
|
return; |
1428 |
|
} |
1429 |
|
|
1430 |
|
page_0 = cpu->cd.arm.host_store[addr_r0 >> 12]; |
1431 |
|
page_1 = cpu->cd.arm.host_store[addr_r1 >> 12]; |
1432 |
|
|
1433 |
|
/* No page translations? Continue non-combined. */ |
1434 |
|
if (page_0 == NULL || page_1 == NULL) { |
1435 |
|
instr(multi_0x08b15018)(cpu, ic); |
1436 |
|
return; |
1437 |
|
} |
1438 |
|
|
1439 |
|
memcpy(page_0 + (addr_r0 & 0xfff), |
1440 |
|
page_1 + (addr_r1 & 0xfff), 32); |
1441 |
|
cpu->cd.arm.r[0] = addr_r0 + 32; |
1442 |
|
cpu->cd.arm.r[1] = addr_r1 + 32; |
1443 |
|
|
1444 |
|
cpu->n_translated_instrs += 4; |
1445 |
|
|
1446 |
|
instr(subs)(cpu, ic + 4); |
1447 |
|
cpu->n_translated_instrs ++; |
1448 |
|
|
1449 |
|
/* Loop while greater or equal: */ |
1450 |
|
cpu->n_translated_instrs ++; |
1451 |
|
} while (((cpu->cd.arm.flags & ARM_F_N)?1:0) == |
1452 |
|
((cpu->cd.arm.flags & ARM_F_V)?1:0)); |
1453 |
|
|
1454 |
|
/* Continue at the instruction after the bge: */ |
1455 |
|
cpu->cd.arm.next_ic = &ic[6]; |
1456 |
|
cpu->n_translated_instrs --; |
1457 |
|
} |
1458 |
|
|
1459 |
|
|
1460 |
|
/* |
1461 |
|
* netbsd_cacheclean: |
1462 |
|
* |
1463 |
|
* The core of a NetBSD/arm cache clean routine, variant 1: |
1464 |
|
* |
1465 |
|
* f015f88c: e4902020 ldr r2,[r0],#32 |
1466 |
|
* f015f890: e2511020 subs r1,r1,#0x20 |
1467 |
|
* f015f894: 1afffffc bne 0xf015f88c |
1468 |
|
* f015f898: ee070f9a mcr 15,0,r0,cr7,cr10,4 |
1469 |
|
*/ |
1470 |
|
X(netbsd_cacheclean) |
1471 |
|
{ |
1472 |
|
uint32_t r1 = cpu->cd.arm.r[1]; |
1473 |
|
cpu->n_translated_instrs += ((r1 >> 5) * 3); |
1474 |
|
cpu->cd.arm.r[0] += r1; |
1475 |
|
cpu->cd.arm.r[1] = 0; |
1476 |
|
cpu->cd.arm.next_ic = &ic[4]; |
1477 |
|
} |
1478 |
|
|
1479 |
|
|
1480 |
|
/* |
1481 |
|
* netbsd_cacheclean2: |
1482 |
|
* |
1483 |
|
* The core of a NetBSD/arm cache clean routine, variant 2: |
1484 |
|
* |
1485 |
|
* f015f93c: ee070f3a mcr 15,0,r0,cr7,cr10,1 |
1486 |
|
* f015f940: ee070f36 mcr 15,0,r0,cr7,cr6,1 |
1487 |
|
* f015f944: e2800020 add r0,r0,#0x20 |
1488 |
|
* f015f948: e2511020 subs r1,r1,#0x20 |
1489 |
|
* f015f94c: 8afffffa bhi 0xf015f93c |
1490 |
|
*/ |
1491 |
|
X(netbsd_cacheclean2) |
1492 |
|
{ |
1493 |
|
cpu->n_translated_instrs += ((cpu->cd.arm.r[1] >> 5) * 5) - 1; |
1494 |
|
cpu->cd.arm.next_ic = &ic[5]; |
1495 |
|
} |
1496 |
|
|
1497 |
|
|
1498 |
|
/* |
1499 |
|
* netbsd_scanc: |
1500 |
|
* |
1501 |
|
* f01bccbc: e5d13000 ldrb r3,[r1] |
1502 |
|
* f01bccc0: e7d23003 ldrb r3,[r2,r3] |
1503 |
|
* f01bccc4: e113000c tsts r3,ip |
1504 |
|
*/ |
1505 |
|
X(netbsd_scanc) |
1506 |
|
{ |
1507 |
|
unsigned char *page = cpu->cd.arm.host_load[cpu->cd.arm.r[1] >> 12]; |
1508 |
|
uint32_t t; |
1509 |
|
|
|
restart_loop: |
|
|
addr = reg(ic[1].arg[0]); |
|
|
page = cpu->cd.arm.host_store[addr >> 12]; |
|
1510 |
if (page == NULL) { |
if (page == NULL) { |
1511 |
instr(cmps)(cpu, ic); |
instr(load_w0_byte_u1_p1_imm)(cpu, ic); |
1512 |
return; |
return; |
1513 |
} |
} |
1514 |
|
|
1515 |
n = reg(rzp) + 1; |
t = page[cpu->cd.arm.r[1] & 0xfff]; |
1516 |
ofs = addr & 0xfff; |
t += cpu->cd.arm.r[2]; |
1517 |
maxlen = 4096 - ofs; |
page = cpu->cd.arm.host_load[t >> 12]; |
|
if (n > maxlen) |
|
|
n = maxlen; |
|
1518 |
|
|
1519 |
/* printf("x = %x, n = %i\n", reg(ic[1].arg[2]), n); */ |
if (page == NULL) { |
1520 |
memset(page + ofs, reg(ic[1].arg[2]), n); |
instr(load_w0_byte_u1_p1_imm)(cpu, ic); |
1521 |
|
return; |
1522 |
|
} |
1523 |
|
|
1524 |
reg(ic[1].arg[0]) = addr + n; |
cpu->cd.arm.r[3] = page[t & 0xfff]; |
1525 |
|
|
1526 |
reg(rzp) -= n; |
t = cpu->cd.arm.r[3] & cpu->cd.arm.r[ARM_IP]; |
1527 |
cpu->n_translated_instrs += (4 * n); |
cpu->cd.arm.flags &= ~(ARM_F_Z | ARM_F_N); |
1528 |
|
if (t == 0) |
1529 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1530 |
|
|
1531 |
a = reg(rzp); |
cpu->n_translated_instrs += 2; |
1532 |
|
cpu->cd.arm.next_ic = &ic[3]; |
1533 |
|
} |
1534 |
|
|
|
cpu->cd.arm.cpsr &= |
|
|
~(ARM_FLAG_Z | ARM_FLAG_N | ARM_FLAG_V | ARM_FLAG_C); |
|
|
if (a != 0) |
|
|
cpu->cd.arm.cpsr |= ARM_FLAG_C; |
|
|
else |
|
|
cpu->cd.arm.cpsr |= ARM_FLAG_Z; |
|
|
if ((int32_t)a < 0) |
|
|
cpu->cd.arm.cpsr |= ARM_FLAG_N; |
|
1535 |
|
|
1536 |
if (max_pages_left-- > 0 && (int32_t)a > 0) |
/* |
1537 |
goto restart_loop; |
* strlen: |
1538 |
|
* |
1539 |
|
* S: e5f03001 ldrb rY,[rX,#1]! |
1540 |
|
* e3530000 cmps rY,#0 |
1541 |
|
* 1afffffc bne S |
1542 |
|
*/ |
1543 |
|
X(strlen) |
1544 |
|
{ |
1545 |
|
unsigned int n_loops = 0; |
1546 |
|
uint32_t rY, rX = reg(ic[0].arg[0]); |
1547 |
|
unsigned char *p; |
1548 |
|
|
1549 |
|
do { |
1550 |
|
rX ++; |
1551 |
|
p = cpu->cd.arm.host_load[rX >> 12]; |
1552 |
|
if (p == NULL) { |
1553 |
|
cpu->n_translated_instrs += (n_loops * 3); |
1554 |
|
instr(load_w1_byte_u1_p1_imm)(cpu, ic); |
1555 |
|
return; |
1556 |
|
} |
1557 |
|
|
1558 |
cpu->n_translated_instrs --; |
rY = reg(ic[0].arg[2]) = p[rX & 0xfff]; /* load */ |
1559 |
|
reg(ic[0].arg[0]) = rX; /* writeback */ |
1560 |
|
n_loops ++; |
1561 |
|
|
1562 |
if ((int32_t)a > 0) |
/* Compare rY to zero: */ |
1563 |
cpu->cd.arm.next_ic = ic; |
cpu->cd.arm.flags = ARM_F_C; |
1564 |
else |
if (rY == 0) |
1565 |
cpu->cd.arm.next_ic = &ic[4]; |
cpu->cd.arm.flags |= ARM_F_Z; |
1566 |
|
} while (rY != 0); |
1567 |
|
|
1568 |
|
cpu->n_translated_instrs += (n_loops * 3) - 1; |
1569 |
|
cpu->cd.arm.next_ic = &ic[3]; |
1570 |
} |
} |
1571 |
|
|
1572 |
|
|
1573 |
/* |
/* |
1574 |
* fill_loop_test2: |
* xchg: |
1575 |
* |
* |
1576 |
* A word-fill loop. Fills at most one page at a time. If the page was not |
* e02YX00X eor rX,rY,rX |
1577 |
* in the host_store table, then the original sequence (beginning with |
* e02XY00Y eor rY,rX,rY |
1578 |
* cmps rZ,#0) is executed instead. |
* e02YX00X eor rX,rY,rX |
1579 |
* |
*/ |
1580 |
* L: str rX,[rY],#4 ic[0] |
X(xchg) |
1581 |
* subs rZ,rZ,#4 ic[1] |
{ |
1582 |
* bgt L ic[2] |
uint32_t tmp = reg(ic[0].arg[0]); |
1583 |
|
cpu->n_translated_instrs += 2; |
1584 |
|
cpu->cd.arm.next_ic = &ic[3]; |
1585 |
|
reg(ic[0].arg[0]) = reg(ic[1].arg[0]); |
1586 |
|
reg(ic[1].arg[0]) = tmp; |
1587 |
|
} |
1588 |
|
|
1589 |
|
|
1590 |
|
/* |
1591 |
|
* netbsd_copyin: |
1592 |
* |
* |
1593 |
* A maximum of 5 pages are filled before returning. |
* e4b0a004 ldrt sl,[r0],#4 |
1594 |
|
* e4b0b004 ldrt fp,[r0],#4 |
1595 |
|
* e4b06004 ldrt r6,[r0],#4 |
1596 |
|
* e4b07004 ldrt r7,[r0],#4 |
1597 |
|
* e4b08004 ldrt r8,[r0],#4 |
1598 |
|
* e4b09004 ldrt r9,[r0],#4 |
1599 |
*/ |
*/ |
1600 |
X(fill_loop_test2) |
X(netbsd_copyin) |
1601 |
{ |
{ |
1602 |
int max_pages_left = 5; |
uint32_t r0 = cpu->cd.arm.r[0], ofs = (r0 & 0xffc), index = r0 >> 12; |
1603 |
unsigned char x1,x2,x3,x4; |
unsigned char *p = cpu->cd.arm.host_load[index]; |
1604 |
uint32_t addr, a, n, x, ofs, maxlen; |
uint32_t *p32 = (uint32_t *) p, *q32; |
1605 |
uint32_t *rzp = (uint32_t *)(size_t)ic[1].arg[0]; |
int ok = cpu->cd.arm.is_userpage[index >> 5] & (1 << (index & 31)); |
|
unsigned char *page; |
|
1606 |
|
|
1607 |
x = reg(ic[0].arg[2]); |
if (ofs > 0x1000 - 6*4 || !ok || p == NULL) { |
1608 |
x1 = x; x2 = x >> 8; x3 = x >> 16; x4 = x >> 24; |
instr(load_w1_word_u1_p0_imm)(cpu, ic); |
|
if (x1 != x2 || x1 != x3 || x1 != x4) { |
|
|
instr(store_w0_word_u1_p0_imm)(cpu, ic); |
|
1609 |
return; |
return; |
1610 |
} |
} |
1611 |
|
q32 = &cpu->cd.arm.r[6]; |
1612 |
|
ofs >>= 2; |
1613 |
|
q32[0] = p32[ofs+2]; |
1614 |
|
q32[1] = p32[ofs+3]; |
1615 |
|
q32[2] = p32[ofs+4]; |
1616 |
|
q32[3] = p32[ofs+5]; |
1617 |
|
q32[4] = p32[ofs+0]; |
1618 |
|
q32[5] = p32[ofs+1]; |
1619 |
|
cpu->cd.arm.r[0] = r0 + 24; |
1620 |
|
cpu->n_translated_instrs += 5; |
1621 |
|
cpu->cd.arm.next_ic = &ic[6]; |
1622 |
|
} |
1623 |
|
|
1624 |
restart_loop: |
|
1625 |
addr = reg(ic[0].arg[0]); |
/* |
1626 |
page = cpu->cd.arm.host_store[addr >> 12]; |
* netbsd_copyout: |
1627 |
if (page == NULL || (addr & 3) != 0) { |
* |
1628 |
instr(store_w0_word_u1_p0_imm)(cpu, ic); |
* e4a18004 strt r8,[r1],#4 |
1629 |
|
* e4a19004 strt r9,[r1],#4 |
1630 |
|
* e4a1a004 strt sl,[r1],#4 |
1631 |
|
* e4a1b004 strt fp,[r1],#4 |
1632 |
|
* e4a16004 strt r6,[r1],#4 |
1633 |
|
* e4a17004 strt r7,[r1],#4 |
1634 |
|
*/ |
1635 |
|
X(netbsd_copyout) |
1636 |
|
{ |
1637 |
|
uint32_t r1 = cpu->cd.arm.r[1], ofs = (r1 & 0xffc), index = r1 >> 12; |
1638 |
|
unsigned char *p = cpu->cd.arm.host_store[index]; |
1639 |
|
uint32_t *p32 = (uint32_t *) p, *q32; |
1640 |
|
int ok = cpu->cd.arm.is_userpage[index >> 5] & (1 << (index & 31)); |
1641 |
|
|
1642 |
|
if (ofs > 0x1000 - 6*4 || !ok || p == NULL) { |
1643 |
|
instr(store_w1_word_u1_p0_imm)(cpu, ic); |
1644 |
return; |
return; |
1645 |
} |
} |
1646 |
|
q32 = &cpu->cd.arm.r[6]; |
1647 |
|
ofs >>= 2; |
1648 |
|
p32[ofs ] = q32[2]; |
1649 |
|
p32[ofs+1] = q32[3]; |
1650 |
|
p32[ofs+2] = q32[4]; |
1651 |
|
p32[ofs+3] = q32[5]; |
1652 |
|
p32[ofs+4] = q32[0]; |
1653 |
|
p32[ofs+5] = q32[1]; |
1654 |
|
cpu->cd.arm.r[1] = r1 + 24; |
1655 |
|
cpu->n_translated_instrs += 5; |
1656 |
|
cpu->cd.arm.next_ic = &ic[6]; |
1657 |
|
} |
1658 |
|
|
|
/* printf("addr = 0x%08x, page = %p\n", addr, page); |
|
|
printf("*rzp = 0x%08x\n", reg(rzp)); */ |
|
1659 |
|
|
1660 |
n = reg(rzp) / 4; |
/* |
1661 |
if (n == 0) |
* cmps by 0, followed by beq (inside the same page): |
1662 |
n++; |
*/ |
1663 |
/* n = nr of _words_ */ |
X(cmps0_beq_samepage) |
1664 |
ofs = addr & 0xfff; |
{ |
1665 |
maxlen = 4096 - ofs; |
uint32_t a = reg(ic->arg[0]); |
1666 |
if (n*4 > maxlen) |
cpu->n_translated_instrs ++; |
1667 |
n = maxlen / 4; |
if (a == 0) { |
1668 |
|
cpu->cd.arm.flags = ARM_F_Z | ARM_F_C; |
1669 |
|
} else { |
1670 |
|
/* Semi-ugly hack which sets the negative-bit if a < 0: */ |
1671 |
|
cpu->cd.arm.flags = ARM_F_C | ((a >> 28) & 8); |
1672 |
|
} |
1673 |
|
if (a == 0) |
1674 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1675 |
|
else |
1676 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1677 |
|
} |
1678 |
|
|
|
/* printf("x = %x, n = %i\n", x1, n); */ |
|
|
memset(page + ofs, x1, n * 4); |
|
1679 |
|
|
1680 |
reg(ic[0].arg[0]) = addr + n * 4; |
/* |
1681 |
|
* cmps followed by beq (inside the same page): |
1682 |
|
*/ |
1683 |
|
X(cmps_beq_samepage) |
1684 |
|
{ |
1685 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a - b; |
1686 |
|
cpu->n_translated_instrs ++; |
1687 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1688 |
|
if (((int32_t)a >= 0 && (int32_t)b < 0 && (int32_t)c < 0) || |
1689 |
|
((int32_t)a < 0 && (int32_t)b >= 0 && (int32_t)c >= 0)) |
1690 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1691 |
|
if (c == 0) { |
1692 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1693 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1694 |
|
} else { |
1695 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1696 |
|
if (c & 0x80000000) |
1697 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1698 |
|
} |
1699 |
|
} |
1700 |
|
|
1701 |
|
|
1702 |
reg(rzp) -= (n * 4); |
/* |
1703 |
cpu->n_translated_instrs += (3 * n); |
* cmps followed by beq (not the same page): |
1704 |
|
*/ |
1705 |
|
X(cmps_0_beq) |
1706 |
|
{ |
1707 |
|
uint32_t a = reg(ic->arg[0]); |
1708 |
|
cpu->n_translated_instrs ++; |
1709 |
|
if (a == 0) { |
1710 |
|
cpu->cd.arm.flags = ARM_F_Z | ARM_F_C; |
1711 |
|
cpu->pc = (uint32_t)(((uint32_t)cpu->pc & 0xfffff000) |
1712 |
|
+ (int32_t)ic[1].arg[0]); |
1713 |
|
quick_pc_to_pointers(cpu); |
1714 |
|
} else { |
1715 |
|
/* Semi-ugly hack which sets the negative-bit if a < 0: */ |
1716 |
|
cpu->cd.arm.flags = ARM_F_C | ((a >> 28) & 8); |
1717 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1718 |
|
} |
1719 |
|
} |
1720 |
|
X(cmps_pos_beq) |
1721 |
|
{ |
1722 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a - b; |
1723 |
|
cpu->n_translated_instrs ++; |
1724 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1725 |
|
if ((int32_t)a < 0 && (int32_t)c >= 0) |
1726 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1727 |
|
if (c == 0) { |
1728 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1729 |
|
cpu->pc = (uint32_t)(((uint32_t)cpu->pc & 0xfffff000) |
1730 |
|
+ (int32_t)ic[1].arg[0]); |
1731 |
|
quick_pc_to_pointers(cpu); |
1732 |
|
} else { |
1733 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1734 |
|
if (c & 0x80000000) |
1735 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1736 |
|
} |
1737 |
|
} |
1738 |
|
X(cmps_neg_beq) |
1739 |
|
{ |
1740 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a - b; |
1741 |
|
cpu->n_translated_instrs ++; |
1742 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1743 |
|
if ((int32_t)a >= 0 && (int32_t)c < 0) |
1744 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1745 |
|
if (c == 0) { |
1746 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1747 |
|
cpu->pc = (uint32_t)(((uint32_t)cpu->pc & 0xfffff000) |
1748 |
|
+ (int32_t)ic[1].arg[0]); |
1749 |
|
quick_pc_to_pointers(cpu); |
1750 |
|
} else { |
1751 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1752 |
|
if (c & 0x80000000) |
1753 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1754 |
|
} |
1755 |
|
} |
1756 |
|
|
|
a = reg(rzp); |
|
1757 |
|
|
1758 |
cpu->cd.arm.cpsr &= |
/* |
1759 |
~(ARM_FLAG_Z | ARM_FLAG_N | ARM_FLAG_V | ARM_FLAG_C); |
* cmps by 0, followed by bne (inside the same page): |
1760 |
if (a != 0) |
*/ |
1761 |
cpu->cd.arm.cpsr |= ARM_FLAG_C; |
X(cmps0_bne_samepage) |
1762 |
|
{ |
1763 |
|
uint32_t a = reg(ic->arg[0]); |
1764 |
|
cpu->n_translated_instrs ++; |
1765 |
|
if (a == 0) { |
1766 |
|
cpu->cd.arm.flags = ARM_F_Z | ARM_F_C; |
1767 |
|
} else { |
1768 |
|
/* Semi-ugly hack which sets the negative-bit if a < 0: */ |
1769 |
|
cpu->cd.arm.flags = ARM_F_C | ((a >> 28) & 8); |
1770 |
|
} |
1771 |
|
if (a == 0) |
1772 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1773 |
else |
else |
1774 |
cpu->cd.arm.cpsr |= ARM_FLAG_Z; |
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1775 |
if ((int32_t)a < 0) |
} |
|
cpu->cd.arm.cpsr |= ARM_FLAG_N; |
|
1776 |
|
|
|
if (max_pages_left-- > 0 && (int32_t)a > 0) |
|
|
goto restart_loop; |
|
1777 |
|
|
1778 |
cpu->n_translated_instrs --; |
/* |
1779 |
|
* cmps followed by bne (inside the same page): |
1780 |
|
*/ |
1781 |
|
X(cmps_bne_samepage) |
1782 |
|
{ |
1783 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a - b; |
1784 |
|
cpu->n_translated_instrs ++; |
1785 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1786 |
|
if (((int32_t)a >= 0 && (int32_t)b < 0 && (int32_t)c < 0) || |
1787 |
|
((int32_t)a < 0 && (int32_t)b >= 0 && (int32_t)c >= 0)) |
1788 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1789 |
|
if (c == 0) { |
1790 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1791 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1792 |
|
} else { |
1793 |
|
if (c & 0x80000000) |
1794 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1795 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1796 |
|
} |
1797 |
|
} |
1798 |
|
|
1799 |
|
|
1800 |
if ((int32_t)a > 0) |
/* |
1801 |
cpu->cd.arm.next_ic = ic; |
* cmps followed by bcc (inside the same page): |
1802 |
|
*/ |
1803 |
|
X(cmps_bcc_samepage) |
1804 |
|
{ |
1805 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a - b; |
1806 |
|
cpu->n_translated_instrs ++; |
1807 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1808 |
|
if (c & 0x80000000) |
1809 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1810 |
|
else if (c == 0) |
1811 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1812 |
|
if (((int32_t)a >= 0 && (int32_t)b < 0 && (int32_t)c < 0) || |
1813 |
|
((int32_t)a < 0 && (int32_t)b >= 0 && (int32_t)c >= 0)) |
1814 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1815 |
|
if (a >= b) |
1816 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1817 |
else |
else |
1818 |
cpu->cd.arm.next_ic = &ic[3]; |
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1819 |
|
} |
1820 |
|
|
1821 |
|
|
1822 |
|
/* |
1823 |
|
* cmps (reg) followed by bcc (inside the same page): |
1824 |
|
*/ |
1825 |
|
X(cmps_reg_bcc_samepage) |
1826 |
|
{ |
1827 |
|
uint32_t a = reg(ic->arg[0]), b = reg(ic->arg[1]), c = a - b; |
1828 |
|
cpu->n_translated_instrs ++; |
1829 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1830 |
|
if (c & 0x80000000) |
1831 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1832 |
|
else if (c == 0) |
1833 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1834 |
|
if (((int32_t)a >= 0 && (int32_t)b < 0 && (int32_t)c < 0) || |
1835 |
|
((int32_t)a < 0 && (int32_t)b >= 0 && (int32_t)c >= 0)) |
1836 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1837 |
|
if (a >= b) |
1838 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1839 |
|
else |
1840 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1841 |
|
} |
1842 |
|
|
1843 |
|
|
1844 |
|
/* |
1845 |
|
* cmps followed by bhi (inside the same page): |
1846 |
|
*/ |
1847 |
|
X(cmps_bhi_samepage) |
1848 |
|
{ |
1849 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a - b; |
1850 |
|
cpu->n_translated_instrs ++; |
1851 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1852 |
|
if (c & 0x80000000) |
1853 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1854 |
|
else if (c == 0) |
1855 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1856 |
|
if (((int32_t)a >= 0 && (int32_t)b < 0 && (int32_t)c < 0) || |
1857 |
|
((int32_t)a < 0 && (int32_t)b >= 0 && (int32_t)c >= 0)) |
1858 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1859 |
|
if (a > b) |
1860 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1861 |
|
else |
1862 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1863 |
|
} |
1864 |
|
|
1865 |
|
|
1866 |
|
/* |
1867 |
|
* cmps (reg) followed by bhi (inside the same page): |
1868 |
|
*/ |
1869 |
|
X(cmps_reg_bhi_samepage) |
1870 |
|
{ |
1871 |
|
uint32_t a = reg(ic->arg[0]), b = reg(ic->arg[1]), c = a - b; |
1872 |
|
cpu->n_translated_instrs ++; |
1873 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1874 |
|
if (c & 0x80000000) |
1875 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1876 |
|
else if (c == 0) |
1877 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1878 |
|
if (((int32_t)a >= 0 && (int32_t)b < 0 && (int32_t)c < 0) || |
1879 |
|
((int32_t)a < 0 && (int32_t)b >= 0 && (int32_t)c >= 0)) |
1880 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1881 |
|
if (a > b) |
1882 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1883 |
|
else |
1884 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1885 |
|
} |
1886 |
|
|
1887 |
|
|
1888 |
|
/* |
1889 |
|
* cmps followed by bgt (inside the same page): |
1890 |
|
*/ |
1891 |
|
X(cmps_bgt_samepage) |
1892 |
|
{ |
1893 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a - b; |
1894 |
|
cpu->n_translated_instrs ++; |
1895 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1896 |
|
if (c & 0x80000000) |
1897 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1898 |
|
else if (c == 0) |
1899 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1900 |
|
if (((int32_t)a >= 0 && (int32_t)b < 0 && (int32_t)c < 0) || |
1901 |
|
((int32_t)a < 0 && (int32_t)b >= 0 && (int32_t)c >= 0)) |
1902 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1903 |
|
if ((int32_t)a > (int32_t)b) |
1904 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1905 |
|
else |
1906 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1907 |
|
} |
1908 |
|
|
1909 |
|
|
1910 |
|
/* |
1911 |
|
* cmps followed by ble (inside the same page): |
1912 |
|
*/ |
1913 |
|
X(cmps_ble_samepage) |
1914 |
|
{ |
1915 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a - b; |
1916 |
|
cpu->n_translated_instrs ++; |
1917 |
|
cpu->cd.arm.flags = ((uint32_t)a >= (uint32_t)b)? ARM_F_C : 0; |
1918 |
|
if (c & 0x80000000) |
1919 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1920 |
|
else if (c == 0) |
1921 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1922 |
|
if (((int32_t)a >= 0 && (int32_t)b < 0 && (int32_t)c < 0) || |
1923 |
|
((int32_t)a < 0 && (int32_t)b >= 0 && (int32_t)c >= 0)) |
1924 |
|
cpu->cd.arm.flags |= ARM_F_V; |
1925 |
|
if ((int32_t)a <= (int32_t)b) |
1926 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) ic[1].arg[0]; |
1927 |
|
else |
1928 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1929 |
|
} |
1930 |
|
|
1931 |
|
|
1932 |
|
/* |
1933 |
|
* teqs followed by beq (inside the same page): |
1934 |
|
*/ |
1935 |
|
X(teqs_beq_samepage) |
1936 |
|
{ |
1937 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a ^ b; |
1938 |
|
cpu->n_translated_instrs ++; |
1939 |
|
cpu->cd.arm.flags &= ~(ARM_F_Z | ARM_F_N); |
1940 |
|
if (c == 0) { |
1941 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1942 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) |
1943 |
|
ic[1].arg[0]; |
1944 |
|
} else { |
1945 |
|
if (c & 0x80000000) |
1946 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1947 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1948 |
|
} |
1949 |
|
} |
1950 |
|
|
1951 |
|
|
1952 |
|
/* |
1953 |
|
* tsts followed by beq (inside the same page): |
1954 |
|
* (arg[1] must not have its highest bit set)) |
1955 |
|
*/ |
1956 |
|
X(tsts_lo_beq_samepage) |
1957 |
|
{ |
1958 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a & b; |
1959 |
|
cpu->n_translated_instrs ++; |
1960 |
|
cpu->cd.arm.flags &= ~(ARM_F_Z | ARM_F_N); |
1961 |
|
if (c == 0) |
1962 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1963 |
|
if (c == 0) |
1964 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) |
1965 |
|
ic[1].arg[0]; |
1966 |
|
else |
1967 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1968 |
|
} |
1969 |
|
|
1970 |
|
|
1971 |
|
/* |
1972 |
|
* teqs followed by bne (inside the same page): |
1973 |
|
*/ |
1974 |
|
X(teqs_bne_samepage) |
1975 |
|
{ |
1976 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a ^ b; |
1977 |
|
cpu->n_translated_instrs ++; |
1978 |
|
cpu->cd.arm.flags &= ~(ARM_F_Z | ARM_F_N); |
1979 |
|
if (c == 0) { |
1980 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
1981 |
|
} else { |
1982 |
|
if (c & 0x80000000) |
1983 |
|
cpu->cd.arm.flags |= ARM_F_N; |
1984 |
|
} |
1985 |
|
if (c == 0) |
1986 |
|
cpu->cd.arm.next_ic = &ic[2]; |
1987 |
|
else |
1988 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) |
1989 |
|
ic[1].arg[0]; |
1990 |
|
} |
1991 |
|
|
1992 |
|
|
1993 |
|
/* |
1994 |
|
* tsts followed by bne (inside the same page): |
1995 |
|
* (arg[1] must not have its highest bit set)) |
1996 |
|
*/ |
1997 |
|
X(tsts_lo_bne_samepage) |
1998 |
|
{ |
1999 |
|
uint32_t a = reg(ic->arg[0]), b = ic->arg[1], c = a & b; |
2000 |
|
cpu->n_translated_instrs ++; |
2001 |
|
cpu->cd.arm.flags &= ~(ARM_F_Z | ARM_F_N); |
2002 |
|
if (c == 0) |
2003 |
|
cpu->cd.arm.flags |= ARM_F_Z; |
2004 |
|
if (c == 0) |
2005 |
|
cpu->cd.arm.next_ic = &ic[2]; |
2006 |
|
else |
2007 |
|
cpu->cd.arm.next_ic = (struct arm_instr_call *) |
2008 |
|
ic[1].arg[0]; |
2009 |
} |
} |
2010 |
|
|
2011 |
|
|
2015 |
X(end_of_page) |
X(end_of_page) |
2016 |
{ |
{ |
2017 |
/* Update the PC: (offset 0, but on the next page) */ |
/* Update the PC: (offset 0, but on the next page) */ |
2018 |
cpu->cd.arm.r[ARM_PC] &= ~((ARM_IC_ENTRIES_PER_PAGE-1) |
cpu->pc &= ~((ARM_IC_ENTRIES_PER_PAGE-1) << ARM_INSTR_ALIGNMENT_SHIFT); |
2019 |
<< ARM_INSTR_ALIGNMENT_SHIFT); |
cpu->pc += (ARM_IC_ENTRIES_PER_PAGE << ARM_INSTR_ALIGNMENT_SHIFT); |
|
cpu->cd.arm.r[ARM_PC] += (ARM_IC_ENTRIES_PER_PAGE |
|
|
<< ARM_INSTR_ALIGNMENT_SHIFT); |
|
|
cpu->pc = cpu->cd.arm.r[ARM_PC]; |
|
2020 |
|
|
2021 |
/* Find the new physical page and update the translation pointers: */ |
/* Find the new physical page and update the translation pointers: */ |
2022 |
arm_pc_to_pointers(cpu); |
quick_pc_to_pointers(cpu); |
2023 |
|
|
2024 |
/* end_of_page doesn't count as an executed instruction: */ |
/* end_of_page doesn't count as an executed instruction: */ |
2025 |
cpu->n_translated_instrs --; |
cpu->n_translated_instrs --; |
2030 |
|
|
2031 |
|
|
2032 |
/* |
/* |
2033 |
* arm_combine_instructions(): |
* Combine: netbsd_memset(): |
2034 |
* |
* |
2035 |
* Combine two or more instructions, if possible, into a single function call. |
* Check for the core of a NetBSD/arm memset; large memsets use a sequence |
2036 |
|
* of 16 store-multiple instructions, each storing 2 registers at a time. |
2037 |
*/ |
*/ |
2038 |
void arm_combine_instructions(struct cpu *cpu, struct arm_instr_call *ic, |
void COMBINE(netbsd_memset)(struct cpu *cpu, |
2039 |
uint32_t addr) |
struct arm_instr_call *ic, int low_addr) |
2040 |
{ |
{ |
2041 |
int n_back; |
#ifdef HOST_LITTLE_ENDIAN |
2042 |
n_back = (addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
int n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2043 |
& (ARM_IC_ENTRIES_PER_PAGE-1); |
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2044 |
|
|
2045 |
if (n_back >= 2) { |
if (n_back >= 17) { |
2046 |
if (ic[-2].f == instr(store_w0_word_u1_p0_imm) && |
int i; |
2047 |
ic[-2].arg[1] == 4 && |
for (i=-16; i<=-1; i++) |
2048 |
ic[-1].f == instr(subs) && |
if (ic[i].f != instr(multi_0x08ac000c__ge)) |
2049 |
ic[-1].arg[0] == ic[-1].arg[2] && ic[-1].arg[1] == 4 && |
return; |
2050 |
|
if (ic[-17].f == instr(subs) && |
2051 |
|
ic[-17].arg[0]==ic[-17].arg[2] && ic[-17].arg[1] == 128 && |
2052 |
ic[ 0].f == instr(b_samepage__gt) && |
ic[ 0].f == instr(b_samepage__gt) && |
2053 |
ic[ 0].arg[0] == (size_t)&ic[-2]) { |
ic[ 0].arg[0] == (size_t)&ic[-17]) { |
2054 |
ic[-2].f = instr(fill_loop_test2); |
ic[-17].f = instr(netbsd_memset); |
2055 |
combined; |
} |
2056 |
|
} |
2057 |
|
#endif |
2058 |
|
} |
2059 |
|
|
2060 |
|
|
2061 |
|
/* |
2062 |
|
* Combine: netbsd_memcpy(): |
2063 |
|
* |
2064 |
|
* Check for the core of a NetBSD/arm memcpy; large memcpys use a |
2065 |
|
* sequence of ldmia instructions. |
2066 |
|
*/ |
2067 |
|
void COMBINE(netbsd_memcpy)(struct cpu *cpu, struct arm_instr_call *ic, |
2068 |
|
int low_addr) |
2069 |
|
{ |
2070 |
|
#ifdef HOST_LITTLE_ENDIAN |
2071 |
|
int n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2072 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2073 |
|
|
2074 |
|
if (n_back >= 5) { |
2075 |
|
if (ic[-5].f==instr(multi_0x08b15018) && |
2076 |
|
ic[-4].f==instr(multi_0x08a05018) && |
2077 |
|
ic[-3].f==instr(multi_0x08b15018) && |
2078 |
|
ic[-2].f==instr(multi_0x08a05018) && |
2079 |
|
ic[-1].f == instr(subs) && |
2080 |
|
ic[-1].arg[0]==ic[-1].arg[2] && ic[-1].arg[1] == 0x20 && |
2081 |
|
ic[ 0].f == instr(b_samepage__ge) && |
2082 |
|
ic[ 0].arg[0] == (size_t)&ic[-5]) { |
2083 |
|
ic[-5].f = instr(netbsd_memcpy); |
2084 |
} |
} |
2085 |
} |
} |
2086 |
|
#endif |
2087 |
|
} |
2088 |
|
|
2089 |
|
|
2090 |
|
/* |
2091 |
|
* Combine: netbsd_cacheclean(): |
2092 |
|
* |
2093 |
|
* Check for the core of a NetBSD/arm cache clean. (There are two variants.) |
2094 |
|
*/ |
2095 |
|
void COMBINE(netbsd_cacheclean)(struct cpu *cpu, |
2096 |
|
struct arm_instr_call *ic, int low_addr) |
2097 |
|
{ |
2098 |
|
int n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2099 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2100 |
|
|
2101 |
if (n_back >= 3) { |
if (n_back >= 3) { |
2102 |
if (ic[-3].f == instr(cmps) && |
if (ic[-3].f==instr(load_w0_word_u1_p0_imm) && |
2103 |
ic[-3].arg[0] == ic[-1].arg[0] && |
ic[-2].f == instr(subs) && |
2104 |
ic[-3].arg[1] == 0 && |
ic[-2].arg[0]==ic[-2].arg[2] && ic[-2].arg[1] == 0x20 && |
2105 |
ic[-2].f == instr(store_w0_byte_u1_p0_imm) && |
ic[-1].f == instr(b_samepage__ne) && |
2106 |
ic[-2].arg[1] == 1 && |
ic[-1].arg[0] == (size_t)&ic[-3]) { |
2107 |
ic[-1].f == instr(sub) && |
ic[-3].f = instr(netbsd_cacheclean); |
2108 |
ic[-1].arg[0] == ic[-1].arg[2] && ic[-1].arg[1] == 1 && |
} |
2109 |
ic[ 0].f == instr(b_samepage__gt) && |
} |
2110 |
ic[ 0].arg[0] == (size_t)&ic[-3]) { |
} |
2111 |
ic[-3].f = instr(fill_loop_test); |
|
2112 |
combined; |
|
2113 |
|
/* |
2114 |
|
* Combine: netbsd_cacheclean2(): |
2115 |
|
* |
2116 |
|
* Check for the core of a NetBSD/arm cache clean. (Second variant.) |
2117 |
|
*/ |
2118 |
|
void COMBINE(netbsd_cacheclean2)(struct cpu *cpu, |
2119 |
|
struct arm_instr_call *ic, int low_addr) |
2120 |
|
{ |
2121 |
|
int n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2122 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2123 |
|
|
2124 |
|
if (n_back >= 4) { |
2125 |
|
if (ic[-4].f == instr(mcr_mrc) && ic[-4].arg[0] == 0xee070f3a && |
2126 |
|
ic[-3].f == instr(mcr_mrc) && ic[-3].arg[0] == 0xee070f36 && |
2127 |
|
ic[-2].f == instr(add) && |
2128 |
|
ic[-2].arg[0]==ic[-2].arg[2] && ic[-2].arg[1] == 0x20 && |
2129 |
|
ic[-1].f == instr(subs) && |
2130 |
|
ic[-1].arg[0]==ic[-1].arg[2] && ic[-1].arg[1] == 0x20) { |
2131 |
|
ic[-4].f = instr(netbsd_cacheclean2); |
2132 |
|
} |
2133 |
|
} |
2134 |
|
} |
2135 |
|
|
2136 |
|
|
2137 |
|
/* |
2138 |
|
* Combine: netbsd_scanc(): |
2139 |
|
*/ |
2140 |
|
void COMBINE(netbsd_scanc)(struct cpu *cpu, |
2141 |
|
struct arm_instr_call *ic, int low_addr) |
2142 |
|
{ |
2143 |
|
int n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2144 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2145 |
|
|
2146 |
|
if (n_back < 2) |
2147 |
|
return; |
2148 |
|
|
2149 |
|
if (ic[-2].f == instr(load_w0_byte_u1_p1_imm) && |
2150 |
|
ic[-2].arg[0] == (size_t)(&cpu->cd.arm.r[1]) && |
2151 |
|
ic[-2].arg[1] == 0 && |
2152 |
|
ic[-2].arg[2] == (size_t)(&cpu->cd.arm.r[3]) && |
2153 |
|
ic[-1].f == instr(load_w0_byte_u1_p1_reg) && |
2154 |
|
ic[-1].arg[0] == (size_t)(&cpu->cd.arm.r[2]) && |
2155 |
|
ic[-1].arg[1] == (size_t)arm_r_r3_t0_c0 && |
2156 |
|
ic[-1].arg[2] == (size_t)(&cpu->cd.arm.r[3])) { |
2157 |
|
ic[-2].f = instr(netbsd_scanc); |
2158 |
|
} |
2159 |
|
} |
2160 |
|
|
2161 |
|
|
2162 |
|
/* |
2163 |
|
* Combine: strlen(): |
2164 |
|
*/ |
2165 |
|
void COMBINE(strlen)(struct cpu *cpu, |
2166 |
|
struct arm_instr_call *ic, int low_addr) |
2167 |
|
{ |
2168 |
|
int n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2169 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2170 |
|
|
2171 |
|
if (n_back < 2) |
2172 |
|
return; |
2173 |
|
|
2174 |
|
if (ic[-2].f == instr(load_w1_byte_u1_p1_imm) && |
2175 |
|
ic[-2].arg[1] == 1 && |
2176 |
|
ic[-2].arg[2] == (size_t)(&cpu->cd.arm.r[3]) && |
2177 |
|
ic[-1].f == instr(cmps) && |
2178 |
|
ic[-1].arg[0] == (size_t)(&cpu->cd.arm.r[3]) && |
2179 |
|
ic[-1].arg[1] == 0) { |
2180 |
|
ic[-2].f = instr(strlen); |
2181 |
|
} |
2182 |
|
} |
2183 |
|
|
2184 |
|
|
2185 |
|
/* |
2186 |
|
* Combine: xchg(): |
2187 |
|
*/ |
2188 |
|
void COMBINE(xchg)(struct cpu *cpu, |
2189 |
|
struct arm_instr_call *ic, int low_addr) |
2190 |
|
{ |
2191 |
|
int n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2192 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2193 |
|
size_t a, b; |
2194 |
|
|
2195 |
|
if (n_back < 2) |
2196 |
|
return; |
2197 |
|
|
2198 |
|
a = ic[-2].arg[0]; b = ic[-1].arg[0]; |
2199 |
|
|
2200 |
|
if (ic[-2].f == instr(eor_regshort) && |
2201 |
|
ic[-1].f == instr(eor_regshort) && |
2202 |
|
ic[-2].arg[0] == a && ic[-2].arg[1] == b && ic[-2].arg[2] == b && |
2203 |
|
ic[-1].arg[0] == b && ic[-1].arg[1] == a && ic[-1].arg[2] == a && |
2204 |
|
ic[ 0].arg[0] == a && ic[ 0].arg[1] == b && ic[ 0].arg[2] == b) { |
2205 |
|
ic[-2].f = instr(xchg); |
2206 |
|
} |
2207 |
|
} |
2208 |
|
|
2209 |
|
|
2210 |
|
/* |
2211 |
|
* Combine: netbsd_copyin(): |
2212 |
|
*/ |
2213 |
|
void COMBINE(netbsd_copyin)(struct cpu *cpu, |
2214 |
|
struct arm_instr_call *ic, int low_addr) |
2215 |
|
{ |
2216 |
|
#ifdef HOST_LITTLE_ENDIAN |
2217 |
|
int i, n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2218 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2219 |
|
|
2220 |
|
if (n_back < 5) |
2221 |
|
return; |
2222 |
|
|
2223 |
|
for (i=-5; i<0; i++) { |
2224 |
|
if (ic[i].f != instr(load_w1_word_u1_p0_imm) || |
2225 |
|
ic[i].arg[0] != (size_t)(&cpu->cd.arm.r[0]) || |
2226 |
|
ic[i].arg[1] != 4) |
2227 |
|
return; |
2228 |
|
} |
2229 |
|
|
2230 |
|
if (ic[-5].arg[2] == (size_t)(&cpu->cd.arm.r[10]) && |
2231 |
|
ic[-4].arg[2] == (size_t)(&cpu->cd.arm.r[11]) && |
2232 |
|
ic[-3].arg[2] == (size_t)(&cpu->cd.arm.r[6]) && |
2233 |
|
ic[-2].arg[2] == (size_t)(&cpu->cd.arm.r[7]) && |
2234 |
|
ic[-1].arg[2] == (size_t)(&cpu->cd.arm.r[8])) { |
2235 |
|
ic[-5].f = instr(netbsd_copyin); |
2236 |
|
} |
2237 |
|
#endif |
2238 |
|
} |
2239 |
|
|
2240 |
|
|
2241 |
|
/* |
2242 |
|
* Combine: netbsd_copyout(): |
2243 |
|
*/ |
2244 |
|
void COMBINE(netbsd_copyout)(struct cpu *cpu, |
2245 |
|
struct arm_instr_call *ic, int low_addr) |
2246 |
|
{ |
2247 |
|
#ifdef HOST_LITTLE_ENDIAN |
2248 |
|
int i, n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2249 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2250 |
|
|
2251 |
|
if (n_back < 5) |
2252 |
|
return; |
2253 |
|
|
2254 |
|
for (i=-5; i<0; i++) { |
2255 |
|
if (ic[i].f != instr(store_w1_word_u1_p0_imm) || |
2256 |
|
ic[i].arg[0] != (size_t)(&cpu->cd.arm.r[1]) || |
2257 |
|
ic[i].arg[1] != 4) |
2258 |
|
return; |
2259 |
|
} |
2260 |
|
|
2261 |
|
if (ic[-5].arg[2] == (size_t)(&cpu->cd.arm.r[8]) && |
2262 |
|
ic[-4].arg[2] == (size_t)(&cpu->cd.arm.r[9]) && |
2263 |
|
ic[-3].arg[2] == (size_t)(&cpu->cd.arm.r[10]) && |
2264 |
|
ic[-2].arg[2] == (size_t)(&cpu->cd.arm.r[11]) && |
2265 |
|
ic[-1].arg[2] == (size_t)(&cpu->cd.arm.r[6])) { |
2266 |
|
ic[-5].f = instr(netbsd_copyout); |
2267 |
|
} |
2268 |
|
#endif |
2269 |
|
} |
2270 |
|
|
2271 |
|
|
2272 |
|
/* |
2273 |
|
* Combine: cmps_b(): |
2274 |
|
*/ |
2275 |
|
void COMBINE(cmps_b)(struct cpu *cpu, |
2276 |
|
struct arm_instr_call *ic, int low_addr) |
2277 |
|
{ |
2278 |
|
int n_back = (low_addr >> ARM_INSTR_ALIGNMENT_SHIFT) |
2279 |
|
& (ARM_IC_ENTRIES_PER_PAGE-1); |
2280 |
|
if (n_back < 1) |
2281 |
|
return; |
2282 |
|
if (ic[0].f == instr(b__eq)) { |
2283 |
|
if (ic[-1].f == instr(cmps)) { |
2284 |
|
if (ic[-1].arg[1] == 0) |
2285 |
|
ic[-1].f = instr(cmps_0_beq); |
2286 |
|
else if (ic[-1].arg[1] & 0x80000000) |
2287 |
|
ic[-1].f = instr(cmps_neg_beq); |
2288 |
|
else |
2289 |
|
ic[-1].f = instr(cmps_pos_beq); |
2290 |
} |
} |
2291 |
|
return; |
2292 |
} |
} |
2293 |
|
if (ic[0].f == instr(b_samepage__eq)) { |
2294 |
|
if (ic[-1].f == instr(cmps)) { |
2295 |
|
if (ic[-1].arg[1] == 0) |
2296 |
|
ic[-1].f = instr(cmps0_beq_samepage); |
2297 |
|
else |
2298 |
|
ic[-1].f = instr(cmps_beq_samepage); |
2299 |
|
} |
2300 |
|
if (ic[-1].f == instr(tsts) && |
2301 |
|
!(ic[-1].arg[1] & 0x80000000)) { |
2302 |
|
ic[-1].f = instr(tsts_lo_beq_samepage); |
2303 |
|
} |
2304 |
|
if (ic[-1].f == instr(teqs)) { |
2305 |
|
ic[-1].f = instr(teqs_beq_samepage); |
2306 |
|
} |
2307 |
|
return; |
2308 |
|
} |
2309 |
|
if (ic[0].f == instr(b_samepage__ne)) { |
2310 |
|
if (ic[-1].f == instr(cmps)) { |
2311 |
|
if (ic[-1].arg[1] == 0) |
2312 |
|
ic[-1].f = instr(cmps0_bne_samepage); |
2313 |
|
else |
2314 |
|
ic[-1].f = instr(cmps_bne_samepage); |
2315 |
|
} |
2316 |
|
if (ic[-1].f == instr(tsts) && |
2317 |
|
!(ic[-1].arg[1] & 0x80000000)) { |
2318 |
|
ic[-1].f = instr(tsts_lo_bne_samepage); |
2319 |
|
} |
2320 |
|
if (ic[-1].f == instr(teqs)) { |
2321 |
|
ic[-1].f = instr(teqs_bne_samepage); |
2322 |
|
} |
2323 |
|
return; |
2324 |
|
} |
2325 |
|
if (ic[0].f == instr(b_samepage__cc)) { |
2326 |
|
if (ic[-1].f == instr(cmps)) { |
2327 |
|
ic[-1].f = instr(cmps_bcc_samepage); |
2328 |
|
} |
2329 |
|
if (ic[-1].f == instr(cmps_regshort)) { |
2330 |
|
ic[-1].f = instr(cmps_reg_bcc_samepage); |
2331 |
|
} |
2332 |
|
return; |
2333 |
|
} |
2334 |
|
if (ic[0].f == instr(b_samepage__hi)) { |
2335 |
|
if (ic[-1].f == instr(cmps)) { |
2336 |
|
ic[-1].f = instr(cmps_bhi_samepage); |
2337 |
|
} |
2338 |
|
if (ic[-1].f == instr(cmps_regshort)) { |
2339 |
|
ic[-1].f = instr(cmps_reg_bhi_samepage); |
2340 |
|
} |
2341 |
|
return; |
2342 |
|
} |
2343 |
|
if (ic[0].f == instr(b_samepage__gt)) { |
2344 |
|
if (ic[-1].f == instr(cmps)) { |
2345 |
|
ic[-1].f = instr(cmps_bgt_samepage); |
2346 |
|
} |
2347 |
|
return; |
2348 |
|
} |
2349 |
|
if (ic[0].f == instr(b_samepage__le)) { |
2350 |
|
if (ic[-1].f == instr(cmps)) { |
2351 |
|
ic[-1].f = instr(cmps_ble_samepage); |
2352 |
|
} |
2353 |
|
return; |
2354 |
|
} |
2355 |
|
} |
2356 |
|
|
2357 |
/* TODO: Combine forward as well */ |
|
2358 |
|
/*****************************************************************************/ |
2359 |
|
|
2360 |
|
|
2361 |
|
static void arm_switch_clear(struct arm_instr_call *ic, int rd, |
2362 |
|
int condition_code) |
2363 |
|
{ |
2364 |
|
switch (rd) { |
2365 |
|
case 0: ic->f = cond_instr(clear_r0); break; |
2366 |
|
case 1: ic->f = cond_instr(clear_r1); break; |
2367 |
|
case 2: ic->f = cond_instr(clear_r2); break; |
2368 |
|
case 3: ic->f = cond_instr(clear_r3); break; |
2369 |
|
case 4: ic->f = cond_instr(clear_r4); break; |
2370 |
|
case 5: ic->f = cond_instr(clear_r5); break; |
2371 |
|
case 6: ic->f = cond_instr(clear_r6); break; |
2372 |
|
case 7: ic->f = cond_instr(clear_r7); break; |
2373 |
|
case 8: ic->f = cond_instr(clear_r8); break; |
2374 |
|
case 9: ic->f = cond_instr(clear_r9); break; |
2375 |
|
case 10: ic->f = cond_instr(clear_r10); break; |
2376 |
|
case 11: ic->f = cond_instr(clear_r11); break; |
2377 |
|
case 12: ic->f = cond_instr(clear_r12); break; |
2378 |
|
case 13: ic->f = cond_instr(clear_r13); break; |
2379 |
|
case 14: ic->f = cond_instr(clear_r14); break; |
2380 |
|
} |
2381 |
|
} |
2382 |
|
|
2383 |
|
|
2384 |
|
static void arm_switch_mov1(struct arm_instr_call *ic, int rd, |
2385 |
|
int condition_code) |
2386 |
|
{ |
2387 |
|
switch (rd) { |
2388 |
|
case 0: ic->f = cond_instr(mov1_r0); break; |
2389 |
|
case 1: ic->f = cond_instr(mov1_r1); break; |
2390 |
|
case 2: ic->f = cond_instr(mov1_r2); break; |
2391 |
|
case 3: ic->f = cond_instr(mov1_r3); break; |
2392 |
|
case 4: ic->f = cond_instr(mov1_r4); break; |
2393 |
|
case 5: ic->f = cond_instr(mov1_r5); break; |
2394 |
|
case 6: ic->f = cond_instr(mov1_r6); break; |
2395 |
|
case 7: ic->f = cond_instr(mov1_r7); break; |
2396 |
|
case 8: ic->f = cond_instr(mov1_r8); break; |
2397 |
|
case 9: ic->f = cond_instr(mov1_r9); break; |
2398 |
|
case 10: ic->f = cond_instr(mov1_r10); break; |
2399 |
|
case 11: ic->f = cond_instr(mov1_r11); break; |
2400 |
|
case 12: ic->f = cond_instr(mov1_r12); break; |
2401 |
|
case 13: ic->f = cond_instr(mov1_r13); break; |
2402 |
|
case 14: ic->f = cond_instr(mov1_r14); break; |
2403 |
|
} |
2404 |
|
} |
2405 |
|
|
2406 |
|
|
2407 |
|
static void arm_switch_add1(struct arm_instr_call *ic, int rd, |
2408 |
|
int condition_code) |
2409 |
|
{ |
2410 |
|
switch (rd) { |
2411 |
|
case 0: ic->f = cond_instr(add1_r0); break; |
2412 |
|
case 1: ic->f = cond_instr(add1_r1); break; |
2413 |
|
case 2: ic->f = cond_instr(add1_r2); break; |
2414 |
|
case 3: ic->f = cond_instr(add1_r3); break; |
2415 |
|
case 4: ic->f = cond_instr(add1_r4); break; |
2416 |
|
case 5: ic->f = cond_instr(add1_r5); break; |
2417 |
|
case 6: ic->f = cond_instr(add1_r6); break; |
2418 |
|
case 7: ic->f = cond_instr(add1_r7); break; |
2419 |
|
case 8: ic->f = cond_instr(add1_r8); break; |
2420 |
|
case 9: ic->f = cond_instr(add1_r9); break; |
2421 |
|
case 10: ic->f = cond_instr(add1_r10); break; |
2422 |
|
case 11: ic->f = cond_instr(add1_r11); break; |
2423 |
|
case 12: ic->f = cond_instr(add1_r12); break; |
2424 |
|
case 13: ic->f = cond_instr(add1_r13); break; |
2425 |
|
case 14: ic->f = cond_instr(add1_r14); break; |
2426 |
|
} |
2427 |
} |
} |
2428 |
|
|
2429 |
|
|
2444 |
unsigned char *page; |
unsigned char *page; |
2445 |
unsigned char ib[4]; |
unsigned char ib[4]; |
2446 |
int condition_code, main_opcode, secondary_opcode, s_bit, rn, rd, r8; |
int condition_code, main_opcode, secondary_opcode, s_bit, rn, rd, r8; |
2447 |
int p_bit, u_bit, b_bit, w_bit, l_bit, regform, rm, c, t; |
int p_bit, u_bit, w_bit, l_bit, regform, rm, c, t, any_pc_reg; |
|
int any_pc_reg; |
|
2448 |
void (*samepage_function)(struct cpu *, struct arm_instr_call *); |
void (*samepage_function)(struct cpu *, struct arm_instr_call *); |
2449 |
|
|
2450 |
/* Figure out the address of the instruction: */ |
/* Figure out the address of the instruction: */ |
2451 |
low_pc = ((size_t)ic - (size_t)cpu->cd.arm.cur_ic_page) |
low_pc = ((size_t)ic - (size_t)cpu->cd.arm.cur_ic_page) |
2452 |
/ sizeof(struct arm_instr_call); |
/ sizeof(struct arm_instr_call); |
2453 |
addr = cpu->cd.arm.r[ARM_PC] & ~((ARM_IC_ENTRIES_PER_PAGE-1) << |
addr = cpu->pc & ~((ARM_IC_ENTRIES_PER_PAGE-1) << |
2454 |
ARM_INSTR_ALIGNMENT_SHIFT); |
ARM_INSTR_ALIGNMENT_SHIFT); |
2455 |
addr += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
addr += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT); |
2456 |
cpu->pc = cpu->cd.arm.r[ARM_PC] = addr; |
cpu->pc = addr; |
2457 |
addr &= ~((1 << ARM_INSTR_ALIGNMENT_SHIFT) - 1); |
addr &= ~((1 << ARM_INSTR_ALIGNMENT_SHIFT) - 1); |
2458 |
|
|
2459 |
/* Read the instruction word from memory: */ |
/* Read the instruction word from memory: */ |
2460 |
page = cpu->cd.arm.host_load[addr >> 12]; |
page = cpu->cd.arm.host_load[addr >> 12]; |
2461 |
if (page != NULL) { |
if (page != NULL) { |
2462 |
/* fatal("TRANSLATION HIT!\n"); */ |
/* fatal("TRANSLATION HIT! 0x%08x\n", addr); */ |
2463 |
memcpy(ib, page + (addr & 0xfff), sizeof(ib)); |
memcpy(ib, page + (addr & 0xfff), sizeof(ib)); |
2464 |
} else { |
} else { |
2465 |
/* fatal("TRANSLATION MISS!\n"); */ |
/* fatal("TRANSLATION MISS! 0x%08x\n", addr); */ |
2466 |
if (!cpu->memory_rw(cpu, cpu->mem, addr, &ib[0], |
if (!cpu->memory_rw(cpu, cpu->mem, addr, &ib[0], |
2467 |
sizeof(ib), MEM_READ, CACHE_INSTRUCTION)) { |
sizeof(ib), MEM_READ, CACHE_INSTRUCTION)) { |
2468 |
fatal("to_be_translated(): " |
fatal("to_be_translated(): " |
2469 |
"read failed: TODO\n"); |
"read failed: TODO\n"); |
2470 |
goto bad; |
return; |
2471 |
} |
} |
2472 |
} |
} |
2473 |
|
|
2487 |
condition_code = iword >> 28; |
condition_code = iword >> 28; |
2488 |
main_opcode = (iword >> 24) & 15; |
main_opcode = (iword >> 24) & 15; |
2489 |
secondary_opcode = (iword >> 21) & 15; |
secondary_opcode = (iword >> 21) & 15; |
2490 |
u_bit = (iword >> 23) & 1; |
u_bit = iword & 0x00800000; |
2491 |
b_bit = (iword >> 22) & 1; |
w_bit = iword & 0x00200000; |
2492 |
w_bit = (iword >> 21) & 1; |
s_bit = l_bit = iword & 0x00100000; |
|
s_bit = l_bit = (iword >> 20) & 1; |
|
2493 |
rn = (iword >> 16) & 15; |
rn = (iword >> 16) & 15; |
2494 |
rd = (iword >> 12) & 15; |
rd = (iword >> 12) & 15; |
2495 |
r8 = (iword >> 8) & 15; |
r8 = (iword >> 8) & 15; |
2554 |
ic->arg[0] = iword; |
ic->arg[0] = iword; |
2555 |
break; |
break; |
2556 |
} |
} |
2557 |
|
if ((iword & 0x0f900ff0) == 0x01000050) { |
2558 |
|
fatal("TODO: q{,d}{add,sub}\n"); |
2559 |
|
goto bad; |
2560 |
|
} |
2561 |
if ((iword & 0x0ff000d0) == 0x01200010) { |
if ((iword & 0x0ff000d0) == 0x01200010) { |
2562 |
/* bx or blx */ |
/* bx or blx */ |
2563 |
if (iword & 0x20) |
if (iword & 0x20) |
2582 |
ic->arg[2] = (size_t)(&cpu->cd.arm.r[rn]); |
ic->arg[2] = (size_t)(&cpu->cd.arm.r[rn]); |
2583 |
break; |
break; |
2584 |
} |
} |
2585 |
|
if ((iword & 0x0fff0ff0) == 0x016f0f10) { |
2586 |
|
ic->f = cond_instr(clz); |
2587 |
|
ic->arg[0] = (size_t)(&cpu->cd.arm.r[rm]); |
2588 |
|
ic->arg[1] = (size_t)(&cpu->cd.arm.r[rd]); |
2589 |
|
break; |
2590 |
|
} |
2591 |
|
if ((iword & 0x0ff00090) == 0x01000080) { |
2592 |
|
/* TODO: smlaXX */ |
2593 |
|
goto bad; |
2594 |
|
} |
2595 |
|
if ((iword & 0x0ff00090) == 0x01400080) { |
2596 |
|
/* TODO: smlalY */ |
2597 |
|
goto bad; |
2598 |
|
} |
2599 |
|
if ((iword & 0x0ff000b0) == 0x01200080) { |
2600 |
|
/* TODO: smlawY */ |
2601 |
|
goto bad; |
2602 |
|
} |
2603 |
|
if ((iword & 0x0ff0f090) == 0x01600080) { |
2604 |
|
/* smulXY (16-bit * 16-bit => 32-bit) */ |
2605 |
|
switch (iword & 0x60) { |
2606 |
|
case 0x00: ic->f = cond_instr(smulbb); break; |
2607 |
|
case 0x20: ic->f = cond_instr(smultb); break; |
2608 |
|
case 0x40: ic->f = cond_instr(smulbt); break; |
2609 |
|
default: ic->f = cond_instr(smultt); break; |
2610 |
|
} |
2611 |
|
ic->arg[0] = (size_t)(&cpu->cd.arm.r[rm]); |
2612 |
|
ic->arg[1] = (size_t)(&cpu->cd.arm.r[r8]); |
2613 |
|
ic->arg[2] = (size_t)(&cpu->cd.arm.r[rn]); /* Rd */ |
2614 |
|
break; |
2615 |
|
} |
2616 |
|
if ((iword & 0x0ff0f0b0) == 0x012000a0) { |
2617 |
|
/* TODO: smulwY */ |
2618 |
|
goto bad; |
2619 |
|
} |
2620 |
if ((iword & 0x0fb0fff0) == 0x0120f000 || |
if ((iword & 0x0fb0fff0) == 0x0120f000 || |
2621 |
(iword & 0x0fb0f000) == 0x0320f000) { |
(iword & 0x0fb0f000) == 0x0320f000) { |
2622 |
/* msr: move to [S|C]PSR from a register or |
/* msr: move to [S|C]PSR from a register or |
2623 |
immediate value */ |
immediate value */ |
|
if (rm == ARM_PC) { |
|
|
fatal("msr PC?\n"); |
|
|
goto bad; |
|
|
} |
|
2624 |
if (iword & 0x02000000) { |
if (iword & 0x02000000) { |
2625 |
if (iword & 0x00400000) |
if (iword & 0x00400000) |
2626 |
ic->f = cond_instr(msr_imm_spsr); |
ic->f = cond_instr(msr_imm_spsr); |
2627 |
else |
else |
2628 |
ic->f = cond_instr(msr_imm); |
ic->f = cond_instr(msr_imm); |
2629 |
} else { |
} else { |
2630 |
|
if (rm == ARM_PC) { |
2631 |
|
fatal("msr PC?\n"); |
2632 |
|
goto bad; |
2633 |
|
} |
2634 |
if (iword & 0x00400000) |
if (iword & 0x00400000) |
2635 |
ic->f = cond_instr(msr_spsr); |
ic->f = cond_instr(msr_spsr); |
2636 |
else |
else |
2703 |
goto bad; |
goto bad; |
2704 |
} |
} |
2705 |
|
|
2706 |
/* "mov pc,lr" with trace enabled: */ |
/* "mov pc,lr": */ |
2707 |
if ((iword & 0x0fffffff) == 0x01a0f00e && |
if ((iword & 0x0fffffff) == 0x01a0f00e) { |
2708 |
cpu->machine->show_trace_tree) { |
if (cpu->machine->show_trace_tree) |
2709 |
ic->f = cond_instr(ret_trace); |
ic->f = cond_instr(ret_trace); |
2710 |
|
else |
2711 |
|
ic->f = cond_instr(ret); |
2712 |
break; |
break; |
2713 |
} |
} |
2714 |
|
|
2715 |
/* "mov reg,reg": */ |
/* "mov reg,reg" or "mov reg,pc": */ |
2716 |
if ((iword & 0x0fff0ff0) == 0x01a00000 && |
if ((iword & 0x0fff0ff0) == 0x01a00000 && rd != ARM_PC) { |
2717 |
(iword&15) != ARM_PC && rd != ARM_PC) { |
if (rm != ARM_PC) { |
2718 |
ic->f = cond_instr(mov_reg_reg); |
ic->f = cond_instr(mov_reg_reg); |
2719 |
ic->arg[0] = (size_t)(&cpu->cd.arm.r[iword & 15]); |
ic->arg[0] = (size_t)(&cpu->cd.arm.r[rm]); |
2720 |
|
} else { |
2721 |
|
ic->f = cond_instr(mov_reg_pc); |
2722 |
|
ic->arg[0] = (addr & 0xfff) + 8; |
2723 |
|
} |
2724 |
ic->arg[1] = (size_t)(&cpu->cd.arm.r[rd]); |
ic->arg[1] = (size_t)(&cpu->cd.arm.r[rd]); |
2725 |
break; |
break; |
2726 |
} |
} |
2727 |
|
|
2728 |
|
/* "mov reg,#0": */ |
2729 |
|
if ((iword & 0x0fff0fff) == 0x03a00000 && rd != ARM_PC) { |
2730 |
|
arm_switch_clear(ic, rd, condition_code); |
2731 |
|
break; |
2732 |
|
} |
2733 |
|
|
2734 |
|
/* "mov reg,#1": */ |
2735 |
|
if ((iword & 0x0fff0fff) == 0x03a00001 && rd != ARM_PC) { |
2736 |
|
arm_switch_mov1(ic, rd, condition_code); |
2737 |
|
break; |
2738 |
|
} |
2739 |
|
|
2740 |
|
/* "add reg,reg,#1": */ |
2741 |
|
if ((iword & 0x0ff00fff) == 0x02800001 && rd != ARM_PC |
2742 |
|
&& rn == rd) { |
2743 |
|
arm_switch_add1(ic, rd, condition_code); |
2744 |
|
break; |
2745 |
|
} |
2746 |
|
|
2747 |
/* |
/* |
2748 |
* Generic Data Processing Instructions: |
* Generic Data Processing Instructions: |
2749 |
*/ |
*/ |
2771 |
ic->arg[1] = imm; |
ic->arg[1] = imm; |
2772 |
} |
} |
2773 |
|
|
2774 |
|
/* mvn #imm ==> mov #~imm */ |
2775 |
|
if (secondary_opcode == 0xf && !regform) { |
2776 |
|
secondary_opcode = 0xd; |
2777 |
|
ic->arg[1] = ~ic->arg[1]; |
2778 |
|
} |
2779 |
|
|
2780 |
ic->arg[0] = (size_t)(&cpu->cd.arm.r[rn]); |
ic->arg[0] = (size_t)(&cpu->cd.arm.r[rn]); |
2781 |
ic->arg[2] = (size_t)(&cpu->cd.arm.r[rd]); |
ic->arg[2] = (size_t)(&cpu->cd.arm.r[rd]); |
2782 |
any_pc_reg = 0; |
any_pc_reg = 0; |
2783 |
if (rn == ARM_PC || rd == ARM_PC) |
if (rn == ARM_PC || rd == ARM_PC) |
2784 |
any_pc_reg = 1; |
any_pc_reg = 1; |
2785 |
|
|
2786 |
ic->f = arm_dpi_instr[condition_code + |
if (!any_pc_reg && regform && (iword & 0xfff) < ARM_PC) { |
2787 |
16 * secondary_opcode + (s_bit? 256 : 0) + |
ic->arg[1] = (size_t)(&cpu->cd.arm.r[rm]); |
2788 |
(any_pc_reg? 512 : 0) + (regform? 1024 : 0)]; |
ic->f = arm_dpi_instr_regshort[condition_code + |
2789 |
|
16 * secondary_opcode + (s_bit? 256 : 0)]; |
2790 |
|
} else |
2791 |
|
ic->f = arm_dpi_instr[condition_code + |
2792 |
|
16 * secondary_opcode + (s_bit? 256 : 0) + |
2793 |
|
(any_pc_reg? 512 : 0) + (regform? 1024 : 0)]; |
2794 |
|
|
2795 |
|
if (ic->f == instr(eor_regshort)) |
2796 |
|
cpu->cd.arm.combination_check = COMBINE(xchg); |
2797 |
|
if (iword == 0xe113000c) |
2798 |
|
cpu->cd.arm.combination_check = COMBINE(netbsd_scanc); |
2799 |
break; |
break; |
2800 |
|
|
2801 |
case 0x4: /* Load and store... */ |
case 0x4: /* Load and store... */ |
2824 |
fatal("Not a Load/store TODO\n"); |
fatal("Not a Load/store TODO\n"); |
2825 |
goto bad; |
goto bad; |
2826 |
} |
} |
2827 |
|
/* Special case: pc-relative load within the same page: */ |
2828 |
|
if (rn == ARM_PC && rd != ARM_PC && main_opcode < 6) { |
2829 |
|
int ofs = (addr & 0xfff) + 8, max = 0xffc; |
2830 |
|
int b_bit = iword & 0x00400000; |
2831 |
|
if (b_bit) |
2832 |
|
max = 0xfff; |
2833 |
|
if (u_bit) |
2834 |
|
ofs += (iword & 0xfff); |
2835 |
|
else |
2836 |
|
ofs -= (iword & 0xfff); |
2837 |
|
/* NOTE/TODO: This assumes 4KB pages, |
2838 |
|
it will not work with 1KB pages. */ |
2839 |
|
if (ofs >= 0 && ofs <= max) { |
2840 |
|
unsigned char *p; |
2841 |
|
unsigned char c[4]; |
2842 |
|
int len = b_bit? 1 : 4; |
2843 |
|
uint32_t x, a = (addr & 0xfffff000) | ofs; |
2844 |
|
/* ic->f = cond_instr(mov); */ |
2845 |
|
ic->f = arm_dpi_instr[condition_code + 16*0xd]; |
2846 |
|
ic->arg[2] = (size_t)(&cpu->cd.arm.r[rd]); |
2847 |
|
p = cpu->cd.arm.host_load[a >> 12]; |
2848 |
|
if (p != NULL) { |
2849 |
|
memcpy(c, p + (a & 0xfff), len); |
2850 |
|
} else { |
2851 |
|
if (!cpu->memory_rw(cpu, cpu->mem, a, |
2852 |
|
c, len, MEM_READ, CACHE_DATA)) { |
2853 |
|
fatal("to_be_translated(): " |
2854 |
|
"read failed X: TODO\n"); |
2855 |
|
goto bad; |
2856 |
|
} |
2857 |
|
} |
2858 |
|
if (cpu->byte_order == EMUL_LITTLE_ENDIAN) |
2859 |
|
x = c[0] + (c[1]<<8) + |
2860 |
|
(c[2]<<16) + (c[3]<<24); |
2861 |
|
else |
2862 |
|
x = c[3] + (c[2]<<8) + |
2863 |
|
(c[1]<<16) + (c[0]<<24); |
2864 |
|
if (b_bit) |
2865 |
|
x = c[0]; |
2866 |
|
ic->arg[1] = x; |
2867 |
|
} |
2868 |
|
} |
2869 |
|
if (iword == 0xe4b09004) |
2870 |
|
cpu->cd.arm.combination_check = COMBINE(netbsd_copyin); |
2871 |
|
if (iword == 0xe4a17004) |
2872 |
|
cpu->cd.arm.combination_check = COMBINE(netbsd_copyout); |
2873 |
break; |
break; |
2874 |
|
|
2875 |
case 0x8: /* Multiple load/store... (Block data transfer) */ |
case 0x8: /* Multiple load/store... (Block data transfer) */ |
2876 |
case 0x9: /* xxxx100P USWLnnnn llllllll llllllll */ |
case 0x9: /* xxxx100P USWLnnnn llllllll llllllll */ |
2877 |
|
ic->arg[0] = (size_t)(&cpu->cd.arm.r[rn]); |
2878 |
|
ic->arg[1] = (size_t)iword; |
2879 |
|
/* Generic case: */ |
2880 |
if (l_bit) |
if (l_bit) |
2881 |
ic->f = cond_instr(bdt_load); |
ic->f = cond_instr(bdt_load); |
2882 |
else |
else |
2883 |
ic->f = cond_instr(bdt_store); |
ic->f = cond_instr(bdt_store); |
2884 |
ic->arg[0] = (size_t)(&cpu->cd.arm.r[rn]); |
#if defined(HOST_LITTLE_ENDIAN) && !defined(GATHER_BDT_STATISTICS) |
2885 |
ic->arg[1] = (size_t)iword; |
/* |
2886 |
|
* Check for availability of optimized implementation: |
2887 |
|
* xxxx100P USWLnnnn llllllll llllllll |
2888 |
|
* ^ ^ ^ ^ ^ ^ ^ ^ (0x00950154) |
2889 |
|
* These bits are used to select which list to scan, and then |
2890 |
|
* the list is scanned linearly. |
2891 |
|
* |
2892 |
|
* The optimized functions do not support show_trace_tree, |
2893 |
|
* but it's ok to use the unoptimized version in that case. |
2894 |
|
*/ |
2895 |
|
if (!cpu->machine->show_trace_tree) { |
2896 |
|
int i = 0, j = iword; |
2897 |
|
j = ((j & 0x00800000) >> 16) | ((j & 0x00100000) >> 14) |
2898 |
|
| ((j & 0x00040000) >> 13) | ((j & 0x00010000) >> 12) |
2899 |
|
| ((j & 0x00000100) >> 5) | ((j & 0x00000040) >> 4) |
2900 |
|
| ((j & 0x00000010) >> 3) | ((j & 0x00000004) >> 2); |
2901 |
|
while (multi_opcode[j][i] != 0) { |
2902 |
|
if ((iword & 0x0fffffff) == |
2903 |
|
multi_opcode[j][i]) { |
2904 |
|
ic->f = multi_opcode_f[j] |
2905 |
|
[i*16 + condition_code]; |
2906 |
|
break; |
2907 |
|
} |
2908 |
|
i ++; |
2909 |
|
} |
2910 |
|
} |
2911 |
|
#endif |
2912 |
if (rn == ARM_PC) { |
if (rn == ARM_PC) { |
2913 |
fatal("TODO: bdt with PC as base\n"); |
fatal("TODO: bdt with PC as base\n"); |
2914 |
goto bad; |
goto bad; |
2920 |
if (main_opcode == 0x0a) { |
if (main_opcode == 0x0a) { |
2921 |
ic->f = cond_instr(b); |
ic->f = cond_instr(b); |
2922 |
samepage_function = cond_instr(b_samepage); |
samepage_function = cond_instr(b_samepage); |
2923 |
|
if (iword == 0xcaffffed) |
2924 |
|
cpu->cd.arm.combination_check = |
2925 |
|
COMBINE(netbsd_memset); |
2926 |
|
if (iword == 0xaafffff9) |
2927 |
|
cpu->cd.arm.combination_check = |
2928 |
|
COMBINE(netbsd_memcpy); |
2929 |
} else { |
} else { |
2930 |
if (cpu->machine->show_trace_tree) { |
if (cpu->machine->show_trace_tree) { |
2931 |
ic->f = cond_instr(bl_trace); |
ic->f = cond_instr(bl_trace); |
2937 |
} |
} |
2938 |
} |
} |
2939 |
|
|
2940 |
|
/* arg 1 = offset of current instruction */ |
2941 |
|
/* arg 2 = offset of the following instruction */ |
2942 |
|
ic->arg[1] = addr & 0xffc; |
2943 |
|
ic->arg[2] = (addr & 0xffc) + 4; |
2944 |
|
|
2945 |
ic->arg[0] = (iword & 0x00ffffff) << 2; |
ic->arg[0] = (iword & 0x00ffffff) << 2; |
2946 |
/* Sign-extend: */ |
/* Sign-extend: */ |
2947 |
if (ic->arg[0] & 0x02000000) |
if (ic->arg[0] & 0x02000000) |
2951 |
*/ |
*/ |
2952 |
ic->arg[0] = (int32_t)(ic->arg[0] + 8); |
ic->arg[0] = (int32_t)(ic->arg[0] + 8); |
2953 |
|
|
2954 |
/* Special case: branch within the same page: */ |
/* |
2955 |
|
* Special case: branch within the same page: |
2956 |
|
* |
2957 |
|
* arg[0] = addr of the arm_instr_call of the target |
2958 |
|
* arg[1] = addr of the next arm_instr_call. |
2959 |
|
*/ |
2960 |
{ |
{ |
2961 |
uint32_t mask_within_page = |
uint32_t mask_within_page = |
2962 |
((ARM_IC_ENTRIES_PER_PAGE-1) << |
((ARM_IC_ENTRIES_PER_PAGE-1) << |
2971 |
cpu->cd.arm.cur_ic_page + |
cpu->cd.arm.cur_ic_page + |
2972 |
((new_pc & mask_within_page) >> |
((new_pc & mask_within_page) >> |
2973 |
ARM_INSTR_ALIGNMENT_SHIFT)); |
ARM_INSTR_ALIGNMENT_SHIFT)); |
2974 |
|
ic->arg[1] = (size_t) ( |
2975 |
|
cpu->cd.arm.cur_ic_page + |
2976 |
|
(((addr & mask_within_page) + 4) >> |
2977 |
|
ARM_INSTR_ALIGNMENT_SHIFT)); |
2978 |
|
} else if (main_opcode == 0x0a) { |
2979 |
|
/* Special hack for a plain "b": */ |
2980 |
|
ic->arg[0] += ic->arg[1]; |
2981 |
} |
} |
2982 |
} |
} |
2983 |
|
|
2984 |
|
if (main_opcode == 0xa && (condition_code <= 1 |
2985 |
|
|| condition_code == 3 || condition_code == 8 |
2986 |
|
|| condition_code == 12 || condition_code == 13)) |
2987 |
|
cpu->cd.arm.combination_check = COMBINE(cmps_b); |
2988 |
|
|
2989 |
|
if (iword == 0x1afffffc) |
2990 |
|
cpu->cd.arm.combination_check = COMBINE(strlen); |
2991 |
|
|
2992 |
|
/* Hm. Does this really increase performance? */ |
2993 |
|
if (iword == 0x8afffffa) |
2994 |
|
cpu->cd.arm.combination_check = |
2995 |
|
COMBINE(netbsd_cacheclean2); |
2996 |
|
break; |
2997 |
|
|
2998 |
|
case 0xc: |
2999 |
|
case 0xd: |
3000 |
|
/* |
3001 |
|
* xxxx1100 0100nnnn ddddcccc oooommmm MCRR c,op,Rd,Rn,CRm |
3002 |
|
* xxxx1100 0101nnnn ddddcccc oooommmm MRRC c,op,Rd,Rn,CRm |
3003 |
|
*/ |
3004 |
|
if ((iword & 0x0fe00fff) == 0x0c400000) { |
3005 |
|
/* Special case: mar/mra DSP instructions */ |
3006 |
|
fatal("TODO: mar/mra DSP instructions!\n"); |
3007 |
|
/* Perhaps these are actually identical to MCRR/MRRC */ |
3008 |
|
goto bad; |
3009 |
|
} |
3010 |
|
|
3011 |
|
if ((iword & 0x0fe00000) == 0x0c400000) { |
3012 |
|
fatal("MCRR/MRRC: TODO\n"); |
3013 |
|
goto bad; |
3014 |
|
} |
3015 |
|
|
3016 |
|
/* |
3017 |
|
* TODO: LDC/STC |
3018 |
|
* |
3019 |
|
* For now, treat as Undefined instructions. This causes e.g. |
3020 |
|
* Linux/ARM to emulate these instructions (floating point). |
3021 |
|
*/ |
3022 |
|
#if 0 |
3023 |
|
ic->f = cond_instr(und); |
3024 |
|
ic->arg[0] = addr & 0xfff; |
3025 |
|
#else |
3026 |
|
fatal("LDC/STC: TODO\n"); |
3027 |
|
goto bad; |
3028 |
|
#endif |
3029 |
break; |
break; |
3030 |
|
|
3031 |
case 0xe: |
case 0xe: |
3032 |
|
if ((iword & 0x0ff00ff0) == 0x0e200010) { |
3033 |
|
/* Special case: mia* DSP instructions */ |
3034 |
|
/* See Intel's 27343601.pdf, page 16-20 */ |
3035 |
|
fatal("TODO: mia* DSP instructions!\n"); |
3036 |
|
goto bad; |
3037 |
|
} |
3038 |
if (iword & 0x10) { |
if (iword & 0x10) { |
3039 |
/* xxxx1110 oooLNNNN ddddpppp qqq1MMMM MCR/MRC */ |
/* xxxx1110 oooLNNNN ddddpppp qqq1MMMM MCR/MRC */ |
3040 |
ic->arg[0] = iword; |
ic->arg[0] = iword; |
3044 |
ic->arg[0] = iword; |
ic->arg[0] = iword; |
3045 |
ic->f = cond_instr(cdp); |
ic->f = cond_instr(cdp); |
3046 |
} |
} |
3047 |
|
if (iword == 0xee070f9a) |
3048 |
|
cpu->cd.arm.combination_check = |
3049 |
|
COMBINE(netbsd_cacheclean); |
3050 |
break; |
break; |
3051 |
|
|
3052 |
case 0xf: |
case 0xf: |
3053 |
/* SWI: */ |
/* SWI: */ |
3054 |
/* Default handler: */ |
/* Default handler: */ |
3055 |
ic->f = cond_instr(swi); |
ic->f = cond_instr(swi); |
3056 |
if (iword == 0xef8c64be) { |
ic->arg[0] = addr & 0xfff; |
3057 |
|
if (iword == 0xef8c64eb) { |
3058 |
|
/* Hack for rebooting a machine: */ |
3059 |
|
ic->f = instr(reboot); |
3060 |
|
} else if (iword == 0xef8c64be) { |
3061 |
/* Hack for openfirmware prom emulation: */ |
/* Hack for openfirmware prom emulation: */ |
3062 |
ic->f = instr(openfirmware); |
ic->f = instr(openfirmware); |
3063 |
} else if (cpu->machine->userland_emul != NULL) { |
} else if (cpu->machine->userland_emul != NULL) { |