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#define CPU_H |
#define CPU_H |
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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.h,v 1.24 2005/06/11 20:59:12 debug Exp $ |
* $Id: cpu.h,v 1.90 2006/08/12 11:43:13 debug Exp $ |
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* |
* |
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* See cpu.c. |
* CPU-related definitions. |
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*/ |
*/ |
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#include <inttypes.h> |
#include <inttypes.h> |
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#include <sys/time.h> |
#include <sys/time.h> |
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/* This is needed for undefining 'mips' or 'ppc', on weird systems: */ |
/* This is needed for undefining 'mips', 'ppc' etc. on weird systems: */ |
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#include "../../config.h" |
#include "../../config.h" |
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/* |
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* Dyntrans misc declarations, used throughout the dyntrans code. |
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* |
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* Note that there is place for all instruction calls within a page, |
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* and then 2 more. The first one of these "extra" instruction slots is |
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* the end-of-page slot. It transfers control to the first instruction |
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* slot on the next (virtual) page. |
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* |
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* The second of these extra instruction slots is an additional |
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* end-of-page slot for delay-slot architectures. On e.g. MIPS, a branch |
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* instruction can "nullify" (skip) the delay-slot. If the end-of-page |
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* slot is skipped, then we end up one step after that. That's where the |
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* end_of_page2 slot is. :) |
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* |
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* next_ofs points to the next page in a chain of possible pages. |
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* (several pages can be in the same chain, but only one matches the |
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* specific physaddr.) |
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* |
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* translations is a tiny bitmap indicating which parts of the page have |
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* actual translations. Bit 0 corresponds to the lowest 1/32th of the page, |
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* bit 1 to the second-lowest 1/32th, and so on. |
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*/ |
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#define DYNTRANS_MISC_DECLARATIONS(arch,ARCH,addrtype) struct \ |
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arch ## _instr_call { \ |
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void (*f)(struct cpu *, struct arch ## _instr_call *); \ |
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size_t arg[ARCH ## _N_IC_ARGS]; \ |
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}; \ |
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\ |
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/* Translation cache struct for each physical page: */ \ |
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struct arch ## _tc_physpage { \ |
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struct arch ## _instr_call ics[ARCH ## _IC_ENTRIES_PER_PAGE+2];\ |
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uint32_t next_ofs; /* (0 for end of chain) */ \ |
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uint32_t translations; \ |
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addrtype physaddr; \ |
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}; \ |
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\ |
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struct arch ## _vpg_tlb_entry { \ |
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uint8_t valid; \ |
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uint8_t writeflag; \ |
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addrtype vaddr_page; \ |
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addrtype paddr_page; \ |
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unsigned char *host_page; \ |
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}; |
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#define DYNTRANS_MISC64_DECLARATIONS(arch,ARCH,tlbindextype) \ |
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struct arch ## _l3_64_table { \ |
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unsigned char *host_load[1 << ARCH ## _L3N]; \ |
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unsigned char *host_store[1 << ARCH ## _L3N]; \ |
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uint64_t phys_addr[1 << ARCH ## _L3N]; \ |
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tlbindextype vaddr_to_tlbindex[1 << ARCH ## _L3N]; \ |
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struct arch ## _tc_physpage *phys_page[1 << ARCH ## _L3N]; \ |
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struct arch ## _l3_64_table *next; \ |
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int refcount; \ |
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}; \ |
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struct arch ## _l2_64_table { \ |
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struct arch ## _l3_64_table *l3[1 << ARCH ## _L2N]; \ |
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struct arch ## _l2_64_table *next; \ |
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int refcount; \ |
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}; |
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/* |
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* Dyntrans "Instruction Translation Cache": |
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* |
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* cur_physpage is a pointer to the current physpage. (It _HAPPENS_ to |
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* be the same as cur_ic_page, because all the instrcalls should be placed |
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* first in the physpage struct!) |
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* |
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* cur_ic_page is a pointer to an array of xxx_IC_ENTRIES_PER_PAGE |
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* instruction call entries. |
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* |
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* next_ic points to the next such instruction call to be executed. |
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* |
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* combination_check, when set to non-NULL, is executed automatically after |
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* an instruction has been translated. (It check for combinations of |
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* instructions; low_addr is the offset of the translated instruction in the |
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* current page, NOT shifted right.) |
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*/ |
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#define DYNTRANS_ITC(arch) struct arch ## _tc_physpage *cur_physpage; \ |
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struct arch ## _instr_call *cur_ic_page; \ |
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struct arch ## _instr_call *next_ic; \ |
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struct arch ## _tc_physpage *physpage_template;\ |
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void (*combination_check)(struct cpu *, \ |
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struct arch ## _instr_call *, int low_addr); |
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/* |
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* Virtual -> physical -> host address translation TLB entries: |
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* ------------------------------------------------------------ |
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* |
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* Regardless of whether 32-bit or 64-bit address translation is used, the |
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* same TLB entry structure is used. |
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*/ |
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#define VPH_TLBS(arch,ARCH) \ |
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struct arch ## _vpg_tlb_entry \ |
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vph_tlb_entry[ARCH ## _MAX_VPH_TLB_ENTRIES]; |
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/* |
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* 32-bit dyntrans emulated Virtual -> physical -> host address translation: |
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* ------------------------------------------------------------------------- |
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* |
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* This stuff assumes that 4 KB pages are used. 20 bits to select a page |
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* means just 1 M entries needed. This is small enough that a couple of |
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* full-size tables can fit in virtual memory on modern hosts (both 32-bit |
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* and 64-bit hosts). :-) |
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* |
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* Usage: e.g. VPH32(arm,ARM,uint32_t,uint8_t) |
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* or VPH32(sparc,SPARC,uint64_t,uint16_t) |
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* |
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* The vph_tlb_entry entries are cpu dependent tlb entries. |
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* |
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* The host_load and host_store entries point to host pages; the phys_addr |
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* entries are uint32_t or uint64_t (emulated physical addresses). |
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* |
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* phys_page points to translation cache physpages. |
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* |
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* vaddr_to_tlbindex is a virtual address to tlb index hint table. |
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* The values in this array are the tlb index plus 1, so a value of, say, |
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* 3 means tlb index 2. A value of 0 would mean a tlb index of -1, which |
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* is not a valid index. (I.e. no hit.) |
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*/ |
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#define N_VPH32_ENTRIES 1048576 |
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#define VPH32(arch,ARCH,paddrtype,tlbindextype) \ |
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unsigned char *host_load[N_VPH32_ENTRIES]; \ |
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unsigned char *host_store[N_VPH32_ENTRIES]; \ |
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paddrtype phys_addr[N_VPH32_ENTRIES]; \ |
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struct arch ## _tc_physpage *phys_page[N_VPH32_ENTRIES]; \ |
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tlbindextype vaddr_to_tlbindex[N_VPH32_ENTRIES]; |
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/* |
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* 64-bit dyntrans emulated Virtual -> physical -> host address translation: |
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* ------------------------------------------------------------------------- |
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* |
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* Usage: e.g. VPH64(alpha,ALPHA,uint8_t) |
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* or VPH64(sparc,SPARC,uint16_t) |
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* |
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* l1_64 is an array containing poiners to l2 tables. |
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* |
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* l2_64_dummy is a pointer to a "dummy l2 table". Instead of having NULL |
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* pointers in l1_64 for unused slots, a pointer to the dummy table can be |
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* used. |
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*/ |
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#define DYNTRANS_L1N 17 |
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#define VPH64(arch,ARCH,tlbindextype) \ |
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struct arch ## _l3_64_table *l3_64_dummy; \ |
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struct arch ## _l3_64_table *next_free_l3; \ |
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struct arch ## _l2_64_table *l2_64_dummy; \ |
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struct arch ## _l2_64_table *next_free_l2; \ |
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struct arch ## _l2_64_table *l1_64[1 << DYNTRANS_L1N]; |
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/* Include all CPUs' header files here: */ |
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#include "cpu_alpha.h" |
#include "cpu_alpha.h" |
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#include "cpu_arm.h" |
#include "cpu_arm.h" |
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#include "cpu_avr.h" |
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#include "cpu_hppa.h" |
#include "cpu_hppa.h" |
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#include "cpu_i960.h" |
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#include "cpu_ia64.h" |
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#include "cpu_m68k.h" |
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#include "cpu_mips.h" |
#include "cpu_mips.h" |
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#include "cpu_ppc.h" |
#include "cpu_ppc.h" |
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#include "cpu_sh.h" |
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#include "cpu_sparc.h" |
#include "cpu_sparc.h" |
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#include "cpu_urisc.h" |
#include "cpu_transputer.h" |
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#include "cpu_x86.h" |
#include "cpu_x86.h" |
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struct cpu; |
struct cpu; |
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struct memory; |
struct memory; |
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/* |
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* cpu_family |
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* ---------- |
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* |
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* This structure consists of various pointers to functions, performing |
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* architecture-specific functions. |
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* |
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* Except for the next and arch fields at the top, all fields in the |
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* cpu_family struct are filled in by ecah CPU family's init function. |
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*/ |
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struct cpu_family { |
struct cpu_family { |
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struct cpu_family *next; |
struct cpu_family *next; |
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int arch; |
int arch; |
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/* These are filled in by each CPU family's init function: */ |
/* Familty name, e.g. "MIPS", "Alpha" etc. */ |
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char *name; |
char *name; |
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struct cpu *(*cpu_new)(struct memory *mem, |
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/* Fill in architecture specific parts of a struct cpu. */ |
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int (*cpu_new)(struct cpu *cpu, struct memory *mem, |
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struct machine *machine, |
struct machine *machine, |
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int cpu_id, char *cpu_type_name); |
int cpu_id, char *cpu_type_name); |
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/* Initialize various translation tables. */ |
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void (*init_tables)(struct cpu *cpu); |
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/* List available CPU types for this architecture. */ |
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void (*list_available_types)(void); |
void (*list_available_types)(void); |
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/* Read or write a CPU register, given a name. */ |
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void (*register_match)(struct machine *m, |
void (*register_match)(struct machine *m, |
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char *name, int writeflag, |
char *name, int writeflag, |
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uint64_t *valuep, int *match_register); |
uint64_t *valuep, int *match_register); |
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/* Disassemble an instruction. */ |
248 |
int (*disassemble_instr)(struct cpu *cpu, |
int (*disassemble_instr)(struct cpu *cpu, |
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unsigned char *instr, int running, |
unsigned char *instr, int running, |
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uint64_t dumpaddr, int bintrans); |
uint64_t dumpaddr); |
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/* Dump CPU registers in readable format. */ |
253 |
void (*register_dump)(struct cpu *cpu, |
void (*register_dump)(struct cpu *cpu, |
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int gprs, int coprocs); |
int gprs, int coprocs); |
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int (*run)(struct emul *emul, |
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struct machine *machine); |
/* Dump generic CPU info in readable format. */ |
257 |
void (*dumpinfo)(struct cpu *cpu); |
void (*dumpinfo)(struct cpu *cpu); |
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void (*show_full_statistics)(struct machine *m); |
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/* Dump TLB data for CPU id x. */ |
260 |
void (*tlbdump)(struct machine *m, int x, |
void (*tlbdump)(struct machine *m, int x, |
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int rawflag); |
int rawflag); |
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|
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/* Assert an interrupt. */ |
264 |
int (*interrupt)(struct cpu *cpu, uint64_t irq_nr); |
int (*interrupt)(struct cpu *cpu, uint64_t irq_nr); |
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/* De-assert an interrupt. */ |
267 |
int (*interrupt_ack)(struct cpu *cpu, |
int (*interrupt_ack)(struct cpu *cpu, |
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uint64_t irq_nr); |
uint64_t irq_nr); |
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/* Print architecture-specific function call arguments. |
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(This is called for each function call, if running with -t.) */ |
272 |
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void (*functioncall_trace)(struct cpu *, |
273 |
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uint64_t f, int n_args); |
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275 |
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/* GDB command handler. */ |
276 |
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char *(*gdb_stub)(struct cpu *, char *cmd); |
277 |
}; |
}; |
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|
279 |
#ifdef TRACE_NULL_CRASHES |
|
280 |
#define TRACE_NULL_N_ENTRIES 16 |
/* |
281 |
#endif |
* More dyntrans stuff: |
282 |
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* |
283 |
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* The translation cache begins with N_BASE_TABLE_ENTRIES uint32_t offsets |
284 |
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* into the cache, for possible translation cache structs for physical pages. |
285 |
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*/ |
286 |
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|
287 |
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/* Meaning of delay_slot: */ |
288 |
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#define NOT_DELAYED 0 |
289 |
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#define DELAYED 1 |
290 |
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#define TO_BE_DELAYED 2 |
291 |
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#define EXCEPTION_IN_DELAY_SLOT 8 |
292 |
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|
293 |
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#define N_SAFE_DYNTRANS_LIMIT_SHIFT 14 |
294 |
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#define N_SAFE_DYNTRANS_LIMIT ((1 << (N_SAFE_DYNTRANS_LIMIT_SHIFT - 1)) - 1) |
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296 |
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#define DYNTRANS_CACHE_SIZE (24*1048576) |
297 |
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#define DYNTRANS_CACHE_MARGIN 300000 |
298 |
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|
299 |
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#define N_BASE_TABLE_ENTRIES 32768 |
300 |
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#define PAGENR_TO_TABLE_INDEX(a) ((a) & (N_BASE_TABLE_ENTRIES-1)) |
301 |
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302 |
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303 |
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/* |
304 |
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* The generic CPU struct: |
305 |
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*/ |
306 |
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|
307 |
struct cpu { |
struct cpu { |
308 |
/* Pointer back to the machine this CPU is in: */ |
/* Pointer back to the machine this CPU is in: */ |
309 |
struct machine *machine; |
struct machine *machine; |
310 |
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|
311 |
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/* CPU-specific name, e.g. "R2000", "21164PC", etc. */ |
312 |
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char *name; |
313 |
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|
314 |
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/* EMUL_LITTLE_ENDIAN or EMUL_BIG_ENDIAN. */ |
315 |
int byte_order; |
int byte_order; |
316 |
int running; |
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317 |
int dead; |
/* 0-based CPU id, in an emulated SMP system. */ |
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int bootstrap_cpu_flag; |
|
318 |
int cpu_id; |
int cpu_id; |
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char *name; |
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319 |
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320 |
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/* 0 for emulated 64-bit CPUs, 1 for 32-bit. */ |
321 |
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int is_32bit; |
322 |
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323 |
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/* 1 while running, 0 when paused/stopped. */ |
324 |
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int running; |
325 |
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326 |
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/* A pointer to the main memory connected to this CPU. */ |
327 |
struct memory *mem; |
struct memory *mem; |
328 |
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329 |
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int (*run_instr)(struct cpu *cpu); |
330 |
int (*memory_rw)(struct cpu *cpu, |
int (*memory_rw)(struct cpu *cpu, |
331 |
struct memory *mem, uint64_t vaddr, |
struct memory *mem, uint64_t vaddr, |
332 |
unsigned char *data, size_t len, |
unsigned char *data, size_t len, |
333 |
int writeflag, int cache_flags); |
int writeflag, int cache_flags); |
334 |
int (*translate_address)(struct cpu *, uint64_t vaddr, |
int (*translate_v2p)(struct cpu *, uint64_t vaddr, |
335 |
uint64_t *return_addr, int flags); |
uint64_t *return_paddr, int flags); |
336 |
void (*useremul_syscall)(struct cpu *cpu, |
void (*update_translation_table)(struct cpu *, |
337 |
uint32_t code); |
uint64_t vaddr_page, unsigned char *host_page, |
338 |
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int writeflag, uint64_t paddr_page); |
339 |
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void (*invalidate_translation_caches)(struct cpu *, |
340 |
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uint64_t paddr, int flags); |
341 |
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void (*invalidate_code_translation)(struct cpu *, |
342 |
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uint64_t paddr, int flags); |
343 |
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void (*useremul_syscall)(struct cpu *cpu, uint32_t code); |
344 |
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int (*instruction_has_delayslot)(struct cpu *cpu, |
345 |
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unsigned char *ib); |
346 |
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|
347 |
/* Things that all CPU families have: */ |
/* The program counter. (For 32-bit modes, not all bits are used.) */ |
348 |
uint64_t pc; |
uint64_t pc; |
349 |
|
|
350 |
#ifdef TRACE_NULL_CRASHES |
/* See comment further up. */ |
351 |
uint64_t trace_null_addr[TRACE_NULL_N_ENTRIES]; |
int delay_slot; |
352 |
int trace_null_index; |
|
353 |
#endif |
/* The current depth of function call tracing. */ |
354 |
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int trace_tree_depth; |
355 |
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|
356 |
/* CPU-family dependant: */ |
/* |
357 |
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* If is_halted is true when an interrupt trap occurs, the pointer |
358 |
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* to the next instruction to execute will be the instruction |
359 |
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* following the halt instruction, not the halt instrucion itself. |
360 |
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*/ |
361 |
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int is_halted; |
362 |
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|
363 |
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/* |
364 |
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* Dynamic translation: |
365 |
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* |
366 |
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* The number of translated instructions is assumed to be 1 per |
367 |
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* instruction call. For each case where this differs from the |
368 |
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* truth, n_translated_instrs should be modified. E.g. if 1000 |
369 |
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* instruction calls are done, and n_translated_instrs is 50, then |
370 |
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* 1050 emulated instructions were actually executed. |
371 |
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* |
372 |
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* Note that it can also be adjusted negatively, that is, the way |
373 |
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* to "get out" of a dyntrans loop is to set the current instruction |
374 |
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* call pointer to the "nothing" instruction. This instruction |
375 |
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* _decreases_ n_translated_instrs. That way, once the dyntrans loop |
376 |
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* exits, only real instructions will be counted, and not the |
377 |
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* "nothing" instructions. |
378 |
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*/ |
379 |
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int n_translated_instrs; |
380 |
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unsigned char *translation_cache; |
381 |
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size_t translation_cache_cur_ofs; |
382 |
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|
383 |
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/* |
384 |
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* CPU-family dependent: |
385 |
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* |
386 |
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* These contain everything ranging from registers, memory management, |
387 |
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* status words, etc. |
388 |
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*/ |
389 |
union { |
union { |
390 |
struct alpha_cpu alpha; |
struct alpha_cpu alpha; |
391 |
struct arm_cpu arm; |
struct arm_cpu arm; |
392 |
struct hppa_cpu hppa; |
struct avr_cpu avr; |
393 |
struct mips_cpu mips; |
struct hppa_cpu hppa; |
394 |
struct ppc_cpu ppc; |
struct i960_cpu i960; |
395 |
struct sparc_cpu sparc; |
struct ia64_cpu ia64; |
396 |
struct urisc_cpu urisc; |
struct m68k_cpu m68k; |
397 |
struct x86_cpu x86; |
struct mips_cpu mips; |
398 |
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struct ppc_cpu ppc; |
399 |
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struct sh_cpu sh; |
400 |
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struct sparc_cpu sparc; |
401 |
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struct transputer_cpu transputer; |
402 |
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struct x86_cpu x86; |
403 |
} cd; |
} cd; |
404 |
}; |
}; |
405 |
|
|
407 |
/* cpu.c: */ |
/* cpu.c: */ |
408 |
struct cpu *cpu_new(struct memory *mem, struct machine *machine, |
struct cpu *cpu_new(struct memory *mem, struct machine *machine, |
409 |
int cpu_id, char *cpu_type_name); |
int cpu_id, char *cpu_type_name); |
|
void cpu_show_full_statistics(struct machine *m); |
|
410 |
void cpu_tlbdump(struct machine *m, int x, int rawflag); |
void cpu_tlbdump(struct machine *m, int x, int rawflag); |
411 |
void cpu_register_match(struct machine *m, char *name, |
void cpu_register_match(struct machine *m, char *name, |
412 |
int writeflag, uint64_t *valuep, int *match_register); |
int writeflag, uint64_t *valuep, int *match_register); |
413 |
void cpu_register_dump(struct machine *m, struct cpu *cpu, |
void cpu_register_dump(struct machine *m, struct cpu *cpu, |
414 |
int gprs, int coprocs); |
int gprs, int coprocs); |
415 |
int cpu_disassemble_instr(struct machine *m, struct cpu *cpu, |
int cpu_disassemble_instr(struct machine *m, struct cpu *cpu, |
416 |
unsigned char *instr, int running, uint64_t addr, int bintrans); |
unsigned char *instr, int running, uint64_t addr); |
417 |
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char *cpu_gdb_stub(struct cpu *cpu, char *cmd); |
418 |
int cpu_interrupt(struct cpu *cpu, uint64_t irq_nr); |
int cpu_interrupt(struct cpu *cpu, uint64_t irq_nr); |
419 |
int cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr); |
int cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr); |
420 |
void cpu_run_init(struct emul *emul, struct machine *machine); |
void cpu_functioncall_trace(struct cpu *cpu, uint64_t f); |
421 |
int cpu_run(struct emul *emul, struct machine *machine); |
void cpu_functioncall_trace_return(struct cpu *cpu); |
422 |
void cpu_run_deinit(struct emul *emul, struct machine *machine); |
void cpu_create_or_reset_tc(struct cpu *cpu); |
423 |
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void cpu_run_init(struct machine *machine); |
424 |
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void cpu_run_deinit(struct machine *machine); |
425 |
void cpu_dumpinfo(struct machine *m, struct cpu *cpu); |
void cpu_dumpinfo(struct machine *m, struct cpu *cpu); |
426 |
void cpu_list_available_types(void); |
void cpu_list_available_types(void); |
427 |
void cpu_show_cycles(struct machine *machine, |
void cpu_show_cycles(struct machine *machine, int forced); |
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struct timeval *starttime, int64_t ncycles, int forced); |
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428 |
struct cpu_family *cpu_family_ptr_by_number(int arch); |
struct cpu_family *cpu_family_ptr_by_number(int arch); |
429 |
void cpu_init(void); |
void cpu_init(void); |
430 |
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431 |
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432 |
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#define JUST_MARK_AS_NON_WRITABLE 1 |
433 |
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#define INVALIDATE_ALL 2 |
434 |
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#define INVALIDATE_PADDR 4 |
435 |
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#define INVALIDATE_VADDR 8 |
436 |
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#define INVALIDATE_VADDR_UPPER4 16 /* useful for PPC emulation */ |
437 |
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438 |
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439 |
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#define CPU_FAMILY_INIT(n,s) int n ## _cpu_family_init( \ |
440 |
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struct cpu_family *fp) { \ |
441 |
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/* Fill in the cpu_family struct with valid data for this arch. */ \ |
442 |
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fp->name = s; \ |
443 |
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fp->cpu_new = n ## _cpu_new; \ |
444 |
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fp->list_available_types = n ## _cpu_list_available_types; \ |
445 |
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fp->register_match = n ## _cpu_register_match; \ |
446 |
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fp->disassemble_instr = n ## _cpu_disassemble_instr; \ |
447 |
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fp->register_dump = n ## _cpu_register_dump; \ |
448 |
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fp->dumpinfo = n ## _cpu_dumpinfo; \ |
449 |
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fp->interrupt = n ## _cpu_interrupt; \ |
450 |
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fp->interrupt_ack = n ## _cpu_interrupt_ack; \ |
451 |
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fp->functioncall_trace = n ## _cpu_functioncall_trace; \ |
452 |
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fp->gdb_stub = n ## _cpu_gdb_stub; \ |
453 |
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fp->tlbdump = n ## _cpu_tlbdump; \ |
454 |
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fp->init_tables = n ## _cpu_init_tables; \ |
455 |
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return 1; \ |
456 |
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} |
457 |
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458 |
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459 |
#endif /* CPU_H */ |
#endif /* CPU_H */ |