trunk/src/cpu.c

/*
 *  Copyright (C) 2005  Anders Gavare.  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright  
 *     notice, this list of conditions and the following disclaimer in the 
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE   
 *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 *  SUCH DAMAGE.
 *
 *
 *  $Id: cpu.c,v 1.323 2005/11/13 22:34:21 debug Exp $
 *
 *  Common routines for CPU emulation. (Not specific to any CPU type.)
 */

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>

#include "cpu.h"
#include "machine.h"
#include "memory.h"
#include "misc.h"


extern int quiet_mode;
extern int show_opcode_statistics;


static struct cpu_family *first_cpu_family = NULL;


/*
 *  cpu_new():
 *
 *  Create a new cpu object.  Each family is tried in sequence until a
 *  CPU family recognizes the cpu_type_name.
 */
struct cpu *cpu_new(struct memory *mem, struct machine *machine,
        int cpu_id, char *name)
{
        struct cpu *cpu;
        struct cpu_family *fp;
        char *cpu_type_name;

        if (name == NULL) {
                fprintf(stderr, "cpu_new(): cpu name = NULL?\n");
                exit(1);
        }

        cpu_type_name = strdup(name);
        if (cpu_type_name == NULL) {
                fprintf(stderr, "cpu_new(): out of memory\n");
                exit(1);
        }

        cpu = zeroed_alloc(sizeof(struct cpu));

        cpu->memory_rw          = NULL;
        cpu->name               = cpu_type_name;
        cpu->mem                = mem;
        cpu->machine            = machine;
        cpu->cpu_id             = cpu_id;
        cpu->byte_order         = EMUL_LITTLE_ENDIAN;
        cpu->bootstrap_cpu_flag = 0;
        cpu->running            = 0;

        cpu_create_or_reset_tc(cpu);

        fp = first_cpu_family;

        while (fp != NULL) {
                if (fp->cpu_new != NULL) {
                        if (fp->cpu_new(cpu, mem, machine, cpu_id,
                            cpu_type_name)) {
                                /*  Sanity check:  */
                                if (cpu->memory_rw == NULL) {
                                        fatal("\ncpu_new(): memory_rw == "
                                            "NULL\n");
                                        exit(1);
                                }
                                return cpu;
                        }
                }

                fp = fp->next;
        }

        fatal("\ncpu_new(): unknown cpu type '%s'\n", cpu_type_name);
        exit(1);
}


/*
 *  cpu_show_full_statistics():
 *
 *  Show detailed statistics on opcode usage on each cpu.
 */
void cpu_show_full_statistics(struct machine *m)
{
        if (m->cpu_family == NULL ||
            m->cpu_family->show_full_statistics == NULL)
                fatal("cpu_show_full_statistics(): NULL\n");
        else
                m->cpu_family->show_full_statistics(m);
}


/*
 *  cpu_tlbdump():
 *
 *  Called from the debugger to dump the TLB in a readable format.
 *  x is the cpu number to dump, or -1 to dump all CPUs.
 *                                              
 *  If rawflag is nonzero, then the TLB contents isn't formated nicely,
 *  just dumped.
 */
void cpu_tlbdump(struct machine *m, int x, int rawflag)
{
        if (m->cpu_family == NULL || m->cpu_family->tlbdump == NULL)
                fatal("cpu_tlbdump(): NULL\n");
        else
                m->cpu_family->tlbdump(m, x, rawflag);
}


/*
 *  cpu_register_match():
 *
 *  Used by the debugger.
 */
void cpu_register_match(struct machine *m, char *name,
        int writeflag, uint64_t *valuep, int *match_register)
{
        if (m->cpu_family == NULL || m->cpu_family->register_match == NULL)
                fatal("cpu_register_match(): NULL\n");
        else
                m->cpu_family->register_match(m, name, writeflag,
                    valuep, match_register);
}


/*
 *  cpu_disassemble_instr():
 *
 *  Convert an instruction word into human readable format, for instruction
 *  tracing.
 */
int cpu_disassemble_instr(struct machine *m, struct cpu *cpu,
        unsigned char *instr, int running, uint64_t addr, int bintrans)
{
        if (m->cpu_family == NULL || m->cpu_family->disassemble_instr == NULL) {
                fatal("cpu_disassemble_instr(): NULL\n");
                return 0;
        } else
                return m->cpu_family->disassemble_instr(cpu, instr,
                    running, addr, bintrans);
}


/*                       
 *  cpu_register_dump():
 *
 *  Dump cpu registers in a relatively readable format.
 *
 *  gprs: set to non-zero to dump GPRs. (CPU dependent.)
 *  coprocs: set bit 0..x to dump registers in coproc 0..x. (CPU dependent.)
 */
void cpu_register_dump(struct machine *m, struct cpu *cpu,
        int gprs, int coprocs)
{
        if (m->cpu_family == NULL || m->cpu_family->register_dump == NULL)
                fatal("cpu_register_dump(): NULL\n");
        else
                m->cpu_family->register_dump(cpu, gprs, coprocs);
}


/*
 *  cpu_interrupt():
 *
 *  Assert an interrupt.
 *  Return value is 1 if the interrupt was asserted, 0 otherwise.
 */
int cpu_interrupt(struct cpu *cpu, uint64_t irq_nr)
{
        if (cpu->machine->cpu_family == NULL ||
            cpu->machine->cpu_family->interrupt == NULL) {
                fatal("cpu_interrupt(): NULL\n");
                return 0;
        } else
                return cpu->machine->cpu_family->interrupt(cpu, irq_nr);
}


/*
 *  cpu_interrupt_ack():
 *
 *  Acknowledge an interrupt.
 *  Return value is 1 if the interrupt was deasserted, 0 otherwise.
 */
int cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr)
{
        if (cpu->machine->cpu_family == NULL ||
            cpu->machine->cpu_family->interrupt_ack == NULL) {
                /*  debug("cpu_interrupt_ack(): NULL\n");  */
                return 0;
        } else
                return cpu->machine->cpu_family->interrupt_ack(cpu, irq_nr);
}


/*
 *  cpu_functioncall_trace():
 *
 *  This function should be called if machine->show_trace_tree is enabled, and
 *  a function call is being made. f contains the address of the function.
 */
void cpu_functioncall_trace(struct cpu *cpu, uint64_t f)
{
        int i, n_args = -1;
        char *symbol;
        uint64_t offset;

        if (cpu->machine->ncpus > 1)
                fatal("cpu%i:\t", cpu->cpu_id);

        cpu->trace_tree_depth ++;
        if (cpu->trace_tree_depth > 100)
                cpu->trace_tree_depth = 100;
        for (i=0; i<cpu->trace_tree_depth; i++)
                fatal("  ");

        fatal("<");
        symbol = get_symbol_name_and_n_args(&cpu->machine->symbol_context,
            f, &offset, &n_args);
        if (symbol != NULL)
                fatal("%s", symbol);
        else {
                if (cpu->is_32bit)
                        fatal("0x%08x", (int)f);
                else
                        fatal("0x%llx", (long long)f);
        }
        fatal("(");

        if (cpu->machine->cpu_family->functioncall_trace != NULL)
                cpu->machine->cpu_family->functioncall_trace(cpu, f, n_args);

        fatal(")>\n");
}


/*
 *  cpu_functioncall_trace_return():
 *
 *  This function should be called if machine->show_trace_tree is enabled, and
 *  a function is being returned from.
 *
 *  TODO: Print return value? This could be implemented similar to the
 *  cpu->functioncall_trace function call above.
 */
void cpu_functioncall_trace_return(struct cpu *cpu)
{
        cpu->trace_tree_depth --;
        if (cpu->trace_tree_depth < 0)
                cpu->trace_tree_depth = 0;
}


/*
 *  cpu_create_or_reset_tc():
 *
 *  Create the translation cache in memory (ie allocate memory for it), if
 *  necessary, and then reset it to an initial state.
 */
void cpu_create_or_reset_tc(struct cpu *cpu)
{
        if (cpu->translation_cache == NULL)
                cpu->translation_cache = zeroed_alloc(DYNTRANS_CACHE_SIZE + 
                    DYNTRANS_CACHE_MARGIN);

        /*  Create an empty table at the beginning of the translation cache:  */
        memset(cpu->translation_cache, 0, sizeof(uint32_t)
            * N_BASE_TABLE_ENTRIES);

        cpu->translation_cache_cur_ofs =
            N_BASE_TABLE_ENTRIES * sizeof(uint32_t);

        /*
         *  There might be other translation pointers that still point to
         *  within the translation_cache region. Let's invalidate those too:
         */
        if (cpu->invalidate_code_translation != NULL)
                cpu->invalidate_code_translation(cpu, 0, INVALIDATE_ALL);
}


/*
 *  cpu_run():
 *
 *  Run instructions on all CPUs in this machine, for a "medium duration"
 *  (or until all CPUs have halted).
 *
 *  Return value is 1 if anything happened, 0 if all CPUs are stopped.
 */
int cpu_run(struct emul *emul, struct machine *m)
{
        if (m->cpu_family == NULL || m->cpu_family->run == NULL) {
                fatal("cpu_run(): NULL\n");
                return 0;
        } else
                return m->cpu_family->run(emul, m);
}


/*
 *  cpu_dumpinfo():
 *
 *  Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar)
 *  is outputed, and it is up to CPU dependent code to complete the line.
 */
void cpu_dumpinfo(struct machine *m, struct cpu *cpu)
{
        debug("cpu%i: %s, %s", cpu->cpu_id, cpu->name,
            cpu->running? "running" : "stopped");

        if (m->cpu_family == NULL || m->cpu_family->dumpinfo == NULL)
                fatal("cpu_dumpinfo(): NULL\n");
        else
                m->cpu_family->dumpinfo(cpu);
}


/*
 *  cpu_list_available_types():
 *
 *  Print a list of available CPU types for each cpu family.
 */
void cpu_list_available_types(void)
{
        struct cpu_family *fp;
        int iadd = 4;

        fp = first_cpu_family;

        if (fp == NULL) {
                debug("No CPUs defined!\n");
                return;
        }

        while (fp != NULL) {
                debug("%s:\n", fp->name);
                debug_indentation(iadd);
                if (fp->list_available_types != NULL)
                        fp->list_available_types();
                else
                        debug("(internal error: list_available_types"
                            " = NULL)\n");
                debug_indentation(-iadd);

                fp = fp->next;
        }
}


/*
 *  cpu_run_deinit():
 *
 *  Shuts down all CPUs in a machine when ending a simulation. (This function
 *  should only need to be called once for each machine.)
 */
void cpu_run_deinit(struct machine *machine)
{
        int te;

        /*
         *  Two last ticks of every hardware device.  This will allow
         *  framebuffers to draw the last updates to the screen before
         *  halting.
         */
        for (te=0; te<machine->n_tick_entries; te++) {
                machine->tick_func[te](machine->cpus[0],
                    machine->tick_extra[te]);
                machine->tick_func[te](machine->cpus[0],
                    machine->tick_extra[te]);
        }

        debug("cpu_run_deinit(): All CPUs halted.\n");

        if (machine->show_nr_of_instructions || !quiet_mode)
                cpu_show_cycles(machine, 1);

        if (show_opcode_statistics)
                cpu_show_full_statistics(machine);

        fflush(stdout);
}


/*
 *  cpu_show_cycles():
 *
 *  If automatic adjustment of clock interrupts is turned on, then recalculate
 *  emulated_hz.  Also, if show_nr_of_instructions is on, then print a
 *  line to stdout about how many instructions/cycles have been executed so
 *  far.
 */
void cpu_show_cycles(struct machine *machine, int forced)
{
        uint64_t offset, pc;
        char *symbol;
        int64_t mseconds, ninstrs, is, avg;
        struct timeval tv;
        int h, m, s, ms, d, instrs_per_cycle = 1;

        static int64_t mseconds_last = 0;
        static int64_t ninstrs_last = -1;

        switch (machine->arch) {
        case ARCH_MIPS:
                instrs_per_cycle = machine->cpus[machine->bootstrap_cpu]->
                    cd.mips.cpu_type.instrs_per_cycle;
                break;
        }

        pc = machine->cpus[machine->bootstrap_cpu]->pc;

        gettimeofday(&tv, NULL);
        mseconds = (tv.tv_sec - machine->starttime.tv_sec) * 1000
                 + (tv.tv_usec - machine->starttime.tv_usec) / 1000;

        if (mseconds == 0)
                mseconds = 1;

        if (mseconds - mseconds_last == 0)
                mseconds ++;

        ninstrs = machine->ncycles_since_gettimeofday * instrs_per_cycle;

        if (machine->automatic_clock_adjustment) {
                static int first_adjustment = 1;

                /*  Current nr of cycles per second:  */
                int64_t cur_cycles_per_second = 1000 *
                    (ninstrs-ninstrs_last) / (mseconds-mseconds_last)
                    / instrs_per_cycle;

                if (cur_cycles_per_second < 1000000)
                        cur_cycles_per_second = 1000000;

                if (first_adjustment) {
                        machine->emulated_hz = cur_cycles_per_second;
                        first_adjustment = 0;
                } else {
                        machine->emulated_hz = (15 * machine->emulated_hz +
                            cur_cycles_per_second) / 16;
                }

                /*  debug("[ updating emulated_hz to %lli Hz ]\n",
                    (long long)machine->emulated_hz);  */
        }


        /*  RETURN here, unless show_nr_of_instructions (-N) is turned on:  */
        if (!machine->show_nr_of_instructions && !forced)
                goto do_return;

        printf("[ %lli instrs",
            (long long)(machine->ncycles * instrs_per_cycle));

        if (!machine->automatic_clock_adjustment) {
                d = machine->emulated_hz / 1000;
                if (d < 1)
                        d = 1;
                ms = machine->ncycles / d;
                h = ms / 3600000;
                ms -= 3600000 * h;
                m = ms / 60000;
                ms -= 60000 * m;
                s = ms / 1000;
                ms -= 1000 * s;

                printf("emulated time = %02i:%02i:%02i.%03i; ", h, m, s, ms);
        }

        /*  Instructions per second, and average so far:  */
        is = 1000 * (ninstrs-ninstrs_last) / (mseconds-mseconds_last);
        avg = (long long)1000 * ninstrs / mseconds;
        if (is < 0)
                is = 0;
        if (avg < 0)
                avg = 0;
        printf("; i/s=%lli avg=%lli", (long long)is, (long long)avg);

        symbol = get_symbol_name(&machine->symbol_context, pc, &offset);

        if (machine->ncpus == 1) {
                if (machine->cpus[machine->bootstrap_cpu]->is_32bit)
                        printf("; pc=0x%08x", (int)pc);
                else
                        printf("; pc=0x%016llx", (long long)pc);
        }

        if (symbol != NULL)
                printf(" <%s>", symbol);
        printf(" ]\n");

do_return:
        ninstrs_last = ninstrs;
        mseconds_last = mseconds;
}


/*
 *  cpu_run_init():
 *
 *  Prepare to run instructions on all CPUs in this machine. (This function
 *  should only need to be called once for each machine.)
 */
void cpu_run_init(struct machine *machine)
{
        int ncpus = machine->ncpus;
        int te;

        machine->a_few_cycles = 1048576;
        machine->ncycles_flush = 0;
        machine->ncycles = 0;
        machine->ncycles_show = 0;

        /*
         *  Instead of doing { one cycle, check hardware ticks }, we
         *  can do { n cycles, check hardware ticks }, as long as
         *  n is at most as much as the lowest number of cycles/tick
         *  for any hardware device.
         */
        for (te=0; te<machine->n_tick_entries; te++) {
                if (machine->ticks_reset_value[te] < machine->a_few_cycles)
                        machine->a_few_cycles = machine->ticks_reset_value[te];
        }

        machine->a_few_cycles >>= 1;
        if (machine->a_few_cycles < 1)
                machine->a_few_cycles = 1;

        if (ncpus > 1 && machine->max_random_cycles_per_chunk == 0)
                machine->a_few_cycles = 1;

        /*  debug("cpu_run_init(): a_few_cycles = %i\n",
            machine->a_few_cycles);  */

        /*  For performance measurement:  */
        gettimeofday(&machine->starttime, NULL);
        machine->ncycles_since_gettimeofday = 0;
}


/*
 *  add_cpu_family():
 *
 *  Allocates a cpu_family struct and calls an init function for the
 *  family to fill in reasonable data and pointers.
 */
static void add_cpu_family(int (*family_init)(struct cpu_family *), int arch)
{
        struct cpu_family *fp, *tmp;
        int res;

        fp = malloc(sizeof(struct cpu_family));
        if (fp == NULL) {
                fprintf(stderr, "add_cpu_family(): out of memory\n");
                exit(1);
        }
        memset(fp, 0, sizeof(struct cpu_family));

        /*
         *  family_init() returns 1 if the struct has been filled with
         *  valid data, 0 if suppor for the cpu family isn't compiled
         *  into the emulator.
         */
        res = family_init(fp);
        if (!res) {
                free(fp);
                return;
        }
        fp->arch = arch;
        fp->next = NULL;

        /*  Add last in family chain:  */
        tmp = first_cpu_family;
        if (tmp == NULL) {
                first_cpu_family = fp;
        } else {
                while (tmp->next != NULL)
                        tmp = tmp->next;
                tmp->next = fp;
        }
}


/*
 *  cpu_family_ptr_by_number():
 *
 *  Returns a pointer to a CPU family based on the ARCH_* integers.
 */
struct cpu_family *cpu_family_ptr_by_number(int arch)
{
        struct cpu_family *fp;
        fp = first_cpu_family;

        /*  YUCK! This is too hardcoded! TODO  */

        while (fp != NULL) {
                if (arch == fp->arch)
                        return fp;
                fp = fp->next;
        }

        return NULL;
}


/*
 *  cpu_init():
 *
 *  Should be called before any other cpu_*() function.
 */
void cpu_init(void)
{
        /*  Note: These are registered in alphabetic order.  */

#ifdef ENABLE_ALPHA
        add_cpu_family(alpha_cpu_family_init, ARCH_ALPHA);
#endif

#ifdef ENABLE_ARM
        add_cpu_family(arm_cpu_family_init, ARCH_ARM);
#endif

#ifdef ENABLE_AVR
        add_cpu_family(avr_cpu_family_init, ARCH_AVR);
#endif

#ifdef ENABLE_HPPA
        add_cpu_family(hppa_cpu_family_init, ARCH_HPPA);
#endif

#ifdef ENABLE_I960
        add_cpu_family(i960_cpu_family_init, ARCH_I960);
#endif

#ifdef ENABLE_IA64
        add_cpu_family(ia64_cpu_family_init, ARCH_IA64);
#endif

#ifdef ENABLE_M68K
        add_cpu_family(m68k_cpu_family_init, ARCH_M68K);
#endif

#ifdef ENABLE_MIPS
        add_cpu_family(mips_cpu_family_init, ARCH_MIPS);
#endif

#ifdef ENABLE_NEWMIPS
        add_cpu_family(newmips_cpu_family_init, ARCH_NEWMIPS);
#endif

#ifdef ENABLE_PPC
        add_cpu_family(ppc_cpu_family_init, ARCH_PPC);
#endif

#ifdef ENABLE_SH
        add_cpu_family(sh_cpu_family_init, ARCH_SH);
#endif

#ifdef ENABLE_SPARC
        add_cpu_family(sparc_cpu_family_init, ARCH_SPARC);
#endif

#ifdef ENABLE_X86
        add_cpu_family(x86_cpu_family_init, ARCH_X86);
#endif
}

1	dpavlin	2	/*
2			* Copyright (C) 2005 Anders Gavare. All rights reserved.
3			*
4			* Redistribution and use in source and binary forms, with or without
5			* modification, are permitted provided that the following conditions are met:
6			*
7			* 1. Redistributions of source code must retain the above copyright
8			* notice, this list of conditions and the following disclaimer.
9			* 2. Redistributions in binary form must reproduce the above copyright
10			* notice, this list of conditions and the following disclaimer in the
11			* documentation and/or other materials provided with the distribution.
12			* 3. The name of the author may not be used to endorse or promote products
13			* derived from this software without specific prior written permission.
14			*
15			* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16			* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17			* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18			* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19			* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20			* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25			* SUCH DAMAGE.
26			*
27			*
28	dpavlin	20	* $Id: cpu.c,v 1.323 2005/11/13 22:34:21 debug Exp $
29	dpavlin	2	*
30			* Common routines for CPU emulation. (Not specific to any CPU type.)
31			*/
32
33			#include <stdio.h>
34			#include <stdlib.h>
35			#include <sys/types.h>
36			#include <string.h>
37
38			#include "cpu.h"
39			#include "machine.h"
40	dpavlin	12	#include "memory.h"
41	dpavlin	2	#include "misc.h"
42
43
44			extern int quiet_mode;
45			extern int show_opcode_statistics;
46
47
48			static struct cpu_family *first_cpu_family = NULL;
49
50
51			/*
52			* cpu_new():
53			*
54			* Create a new cpu object. Each family is tried in sequence until a
55			* CPU family recognizes the cpu_type_name.
56			*/
57			struct cpu cpu_new(struct memory mem, struct machine *machine,
58			int cpu_id, char *name)
59			{
60	dpavlin	10	struct cpu *cpu;
61	dpavlin	2	struct cpu_family *fp;
62			char *cpu_type_name;
63
64			if (name == NULL) {
65			fprintf(stderr, "cpu_new(): cpu name = NULL?\n");
66			exit(1);
67			}
68
69			cpu_type_name = strdup(name);
70			if (cpu_type_name == NULL) {
71			fprintf(stderr, "cpu_new(): out of memory\n");
72			exit(1);
73			}
74
75	dpavlin	12	cpu = zeroed_alloc(sizeof(struct cpu));
76	dpavlin	10
77			cpu->memory_rw = NULL;
78			cpu->name = cpu_type_name;
79			cpu->mem = mem;
80			cpu->machine = machine;
81			cpu->cpu_id = cpu_id;
82			cpu->byte_order = EMUL_LITTLE_ENDIAN;
83			cpu->bootstrap_cpu_flag = 0;
84			cpu->running = 0;
85
86	dpavlin	12	cpu_create_or_reset_tc(cpu);
87
88	dpavlin	2	fp = first_cpu_family;
89
90			while (fp != NULL) {
91			if (fp->cpu_new != NULL) {
92	dpavlin	10	if (fp->cpu_new(cpu, mem, machine, cpu_id,
93			cpu_type_name)) {
94			/* Sanity check: */
95			if (cpu->memory_rw == NULL) {
96			fatal("\ncpu_new(): memory_rw == "
97			"NULL\n");
98	dpavlin	2	exit(1);
99			}
100	dpavlin	10	return cpu;
101	dpavlin	2	}
102			}
103
104			fp = fp->next;
105			}
106
107	dpavlin	6	fatal("\ncpu_new(): unknown cpu type '%s'\n", cpu_type_name);
108	dpavlin	2	exit(1);
109			}
110
111
112			/*
113			* cpu_show_full_statistics():
114			*
115			* Show detailed statistics on opcode usage on each cpu.
116			*/
117			void cpu_show_full_statistics(struct machine *m)
118			{
119			if (m->cpu_family == NULL \|\|
120			m->cpu_family->show_full_statistics == NULL)
121			fatal("cpu_show_full_statistics(): NULL\n");
122			else
123			m->cpu_family->show_full_statistics(m);
124			}
125
126
127			/*
128			* cpu_tlbdump():
129			*
130			* Called from the debugger to dump the TLB in a readable format.
131			* x is the cpu number to dump, or -1 to dump all CPUs.
132			*
133			* If rawflag is nonzero, then the TLB contents isn't formated nicely,
134			* just dumped.
135			*/
136			void cpu_tlbdump(struct machine *m, int x, int rawflag)
137			{
138			if (m->cpu_family == NULL \|\| m->cpu_family->tlbdump == NULL)
139			fatal("cpu_tlbdump(): NULL\n");
140			else
141			m->cpu_family->tlbdump(m, x, rawflag);
142			}
143
144
145			/*
146			* cpu_register_match():
147			*
148			* Used by the debugger.
149			*/
150			void cpu_register_match(struct machine m, char name,
151			int writeflag, uint64_t valuep, int match_register)
152			{
153			if (m->cpu_family == NULL \|\| m->cpu_family->register_match == NULL)
154			fatal("cpu_register_match(): NULL\n");
155			else
156			m->cpu_family->register_match(m, name, writeflag,
157			valuep, match_register);
158			}
159
160
161			/*
162			* cpu_disassemble_instr():
163			*
164			* Convert an instruction word into human readable format, for instruction
165			* tracing.
166			*/
167			int cpu_disassemble_instr(struct machine m, struct cpu cpu,
168			unsigned char *instr, int running, uint64_t addr, int bintrans)
169			{
170			if (m->cpu_family == NULL \|\| m->cpu_family->disassemble_instr == NULL) {
171			fatal("cpu_disassemble_instr(): NULL\n");
172			return 0;
173			} else
174			return m->cpu_family->disassemble_instr(cpu, instr,
175			running, addr, bintrans);
176			}
177
178
179			/*
180			* cpu_register_dump():
181			*
182			* Dump cpu registers in a relatively readable format.
183			*
184	dpavlin	18	* gprs: set to non-zero to dump GPRs. (CPU dependent.)
185			* coprocs: set bit 0..x to dump registers in coproc 0..x. (CPU dependent.)
186	dpavlin	2	*/
187			void cpu_register_dump(struct machine m, struct cpu cpu,
188			int gprs, int coprocs)
189			{
190			if (m->cpu_family == NULL \|\| m->cpu_family->register_dump == NULL)
191			fatal("cpu_register_dump(): NULL\n");
192			else
193			m->cpu_family->register_dump(cpu, gprs, coprocs);
194			}
195
196
197			/*
198			* cpu_interrupt():
199			*
200			* Assert an interrupt.
201			* Return value is 1 if the interrupt was asserted, 0 otherwise.
202			*/
203			int cpu_interrupt(struct cpu *cpu, uint64_t irq_nr)
204			{
205			if (cpu->machine->cpu_family == NULL \|\|
206			cpu->machine->cpu_family->interrupt == NULL) {
207			fatal("cpu_interrupt(): NULL\n");
208			return 0;
209			} else
210			return cpu->machine->cpu_family->interrupt(cpu, irq_nr);
211			}
212
213
214			/*
215			* cpu_interrupt_ack():
216			*
217			* Acknowledge an interrupt.
218			* Return value is 1 if the interrupt was deasserted, 0 otherwise.
219			*/
220			int cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr)
221			{
222			if (cpu->machine->cpu_family == NULL \|\|
223			cpu->machine->cpu_family->interrupt_ack == NULL) {
224			/* debug("cpu_interrupt_ack(): NULL\n"); */
225			return 0;
226			} else
227			return cpu->machine->cpu_family->interrupt_ack(cpu, irq_nr);
228			}
229
230
231			/*
232	dpavlin	12	* cpu_functioncall_trace():
233			*
234			* This function should be called if machine->show_trace_tree is enabled, and
235			* a function call is being made. f contains the address of the function.
236			*/
237			void cpu_functioncall_trace(struct cpu *cpu, uint64_t f)
238			{
239			int i, n_args = -1;
240			char *symbol;
241			uint64_t offset;
242
243			if (cpu->machine->ncpus > 1)
244			fatal("cpu%i:\t", cpu->cpu_id);
245
246			cpu->trace_tree_depth ++;
247	dpavlin	14	if (cpu->trace_tree_depth > 100)
248			cpu->trace_tree_depth = 100;
249	dpavlin	12	for (i=0; i<cpu->trace_tree_depth; i++)
250			fatal(" ");
251
252			fatal("<");
253			symbol = get_symbol_name_and_n_args(&cpu->machine->symbol_context,
254			f, &offset, &n_args);
255			if (symbol != NULL)
256			fatal("%s", symbol);
257			else {
258			if (cpu->is_32bit)
259			fatal("0x%08x", (int)f);
260			else
261			fatal("0x%llx", (long long)f);
262			}
263			fatal("(");
264
265			if (cpu->machine->cpu_family->functioncall_trace != NULL)
266			cpu->machine->cpu_family->functioncall_trace(cpu, f, n_args);
267
268			fatal(")>\n");
269			}
270
271
272			/*
273			* cpu_functioncall_trace_return():
274			*
275			* This function should be called if machine->show_trace_tree is enabled, and
276			* a function is being returned from.
277			*
278			* TODO: Print return value? This could be implemented similar to the
279			* cpu->functioncall_trace function call above.
280			*/
281			void cpu_functioncall_trace_return(struct cpu *cpu)
282			{
283			cpu->trace_tree_depth --;
284			if (cpu->trace_tree_depth < 0)
285			cpu->trace_tree_depth = 0;
286			}
287
288
289			/*
290			* cpu_create_or_reset_tc():
291			*
292			* Create the translation cache in memory (ie allocate memory for it), if
293			* necessary, and then reset it to an initial state.
294			*/
295			void cpu_create_or_reset_tc(struct cpu *cpu)
296			{
297			if (cpu->translation_cache == NULL)
298			cpu->translation_cache = zeroed_alloc(DYNTRANS_CACHE_SIZE +
299			DYNTRANS_CACHE_MARGIN);
300
301			/* Create an empty table at the beginning of the translation cache: */
302			memset(cpu->translation_cache, 0, sizeof(uint32_t)
303			* N_BASE_TABLE_ENTRIES);
304
305			cpu->translation_cache_cur_ofs =
306			N_BASE_TABLE_ENTRIES * sizeof(uint32_t);
307
308			/*
309			* There might be other translation pointers that still point to
310			* within the translation_cache region. Let's invalidate those too:
311			*/
312	dpavlin	14	if (cpu->invalidate_code_translation != NULL)
313			cpu->invalidate_code_translation(cpu, 0, INVALIDATE_ALL);
314	dpavlin	12	}
315
316
317			/*
318	dpavlin	2	* cpu_run():
319			*
320			* Run instructions on all CPUs in this machine, for a "medium duration"
321			* (or until all CPUs have halted).
322			*
323			* Return value is 1 if anything happened, 0 if all CPUs are stopped.
324			*/
325			int cpu_run(struct emul emul, struct machine m)
326			{
327			if (m->cpu_family == NULL \|\| m->cpu_family->run == NULL) {
328			fatal("cpu_run(): NULL\n");
329			return 0;
330			} else
331			return m->cpu_family->run(emul, m);
332			}
333
334
335			/*
336			* cpu_dumpinfo():
337			*
338			* Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar)
339	dpavlin	18	* is outputed, and it is up to CPU dependent code to complete the line.
340	dpavlin	2	*/
341			void cpu_dumpinfo(struct machine m, struct cpu cpu)
342			{
343			debug("cpu%i: %s, %s", cpu->cpu_id, cpu->name,
344			cpu->running? "running" : "stopped");
345
346			if (m->cpu_family == NULL \|\| m->cpu_family->dumpinfo == NULL)
347			fatal("cpu_dumpinfo(): NULL\n");
348			else
349			m->cpu_family->dumpinfo(cpu);
350			}
351
352
353			/*
354			* cpu_list_available_types():
355			*
356			* Print a list of available CPU types for each cpu family.
357			*/
358			void cpu_list_available_types(void)
359			{
360			struct cpu_family *fp;
361			int iadd = 4;
362
363			fp = first_cpu_family;
364
365			if (fp == NULL) {
366			debug("No CPUs defined!\n");
367			return;
368			}
369
370			while (fp != NULL) {
371			debug("%s:\n", fp->name);
372			debug_indentation(iadd);
373			if (fp->list_available_types != NULL)
374			fp->list_available_types();
375			else
376			debug("(internal error: list_available_types"
377			" = NULL)\n");
378			debug_indentation(-iadd);
379
380			fp = fp->next;
381			}
382			}
383
384
385			/*
386			* cpu_run_deinit():
387			*
388			* Shuts down all CPUs in a machine when ending a simulation. (This function
389			* should only need to be called once for each machine.)
390			*/
391	dpavlin	12	void cpu_run_deinit(struct machine *machine)
392	dpavlin	2	{
393			int te;
394
395			/*
396			* Two last ticks of every hardware device. This will allow
397			* framebuffers to draw the last updates to the screen before
398			* halting.
399			*/
400			for (te=0; te<machine->n_tick_entries; te++) {
401			machine->tick_func[te](machine->cpus[0],
402			machine->tick_extra[te]);
403			machine->tick_func[te](machine->cpus[0],
404			machine->tick_extra[te]);
405			}
406
407			debug("cpu_run_deinit(): All CPUs halted.\n");
408
409			if (machine->show_nr_of_instructions \|\| !quiet_mode)
410	dpavlin	10	cpu_show_cycles(machine, 1);
411	dpavlin	2
412			if (show_opcode_statistics)
413			cpu_show_full_statistics(machine);
414
415			fflush(stdout);
416			}
417
418
419			/*
420			* cpu_show_cycles():
421			*
422			* If automatic adjustment of clock interrupts is turned on, then recalculate
423			* emulated_hz. Also, if show_nr_of_instructions is on, then print a
424			* line to stdout about how many instructions/cycles have been executed so
425			* far.
426			*/
427	dpavlin	10	void cpu_show_cycles(struct machine *machine, int forced)
428	dpavlin	2	{
429			uint64_t offset, pc;
430			char *symbol;
431	dpavlin	12	int64_t mseconds, ninstrs, is, avg;
432	dpavlin	2	struct timeval tv;
433	dpavlin	12	int h, m, s, ms, d, instrs_per_cycle = 1;
434	dpavlin	2
435			static int64_t mseconds_last = 0;
436			static int64_t ninstrs_last = -1;
437
438	dpavlin	10	switch (machine->arch) {
439			case ARCH_MIPS:
440			instrs_per_cycle = machine->cpus[machine->bootstrap_cpu]->
441			cd.mips.cpu_type.instrs_per_cycle;
442			break;
443	dpavlin	2	}
444
445			pc = machine->cpus[machine->bootstrap_cpu]->pc;
446
447			gettimeofday(&tv, NULL);
448	dpavlin	10	mseconds = (tv.tv_sec - machine->starttime.tv_sec) * 1000
449			+ (tv.tv_usec - machine->starttime.tv_usec) / 1000;
450	dpavlin	2
451			if (mseconds == 0)
452			mseconds = 1;
453
454			if (mseconds - mseconds_last == 0)
455			mseconds ++;
456
457	dpavlin	10	ninstrs = machine->ncycles_since_gettimeofday * instrs_per_cycle;
458	dpavlin	2
459			if (machine->automatic_clock_adjustment) {
460			static int first_adjustment = 1;
461
462			/* Current nr of cycles per second: */
463			int64_t cur_cycles_per_second = 1000 *
464			(ninstrs-ninstrs_last) / (mseconds-mseconds_last)
465			/ instrs_per_cycle;
466
467			if (cur_cycles_per_second < 1000000)
468			cur_cycles_per_second = 1000000;
469
470			if (first_adjustment) {
471			machine->emulated_hz = cur_cycles_per_second;
472			first_adjustment = 0;
473			} else {
474			machine->emulated_hz = (15 * machine->emulated_hz +
475			cur_cycles_per_second) / 16;
476			}
477
478	dpavlin	12	/* debug("[ updating emulated_hz to %lli Hz ]\n",
479			(long long)machine->emulated_hz); */
480	dpavlin	2	}
481
482
483			/* RETURN here, unless show_nr_of_instructions (-N) is turned on: */
484			if (!machine->show_nr_of_instructions && !forced)
485			goto do_return;
486
487	dpavlin	10	printf("[ %lli instrs",
488			(long long)(machine->ncycles * instrs_per_cycle));
489	dpavlin	2
490			if (!machine->automatic_clock_adjustment) {
491			d = machine->emulated_hz / 1000;
492			if (d < 1)
493			d = 1;
494	dpavlin	10	ms = machine->ncycles / d;
495	dpavlin	2	h = ms / 3600000;
496			ms -= 3600000 * h;
497			m = ms / 60000;
498			ms -= 60000 * m;
499			s = ms / 1000;
500			ms -= 1000 * s;
501
502			printf("emulated time = %02i:%02i:%02i.%03i; ", h, m, s, ms);
503			}
504
505			/* Instructions per second, and average so far: */
506	dpavlin	12	is = 1000 * (ninstrs-ninstrs_last) / (mseconds-mseconds_last);
507			avg = (long long)1000 * ninstrs / mseconds;
508			if (is < 0)
509			is = 0;
510			if (avg < 0)
511			avg = 0;
512			printf("; i/s=%lli avg=%lli", (long long)is, (long long)avg);
513	dpavlin	2
514			symbol = get_symbol_name(&machine->symbol_context, pc, &offset);
515
516	dpavlin	12	if (machine->ncpus == 1) {
517			if (machine->cpus[machine->bootstrap_cpu]->is_32bit)
518			printf("; pc=0x%08x", (int)pc);
519			else
520			printf("; pc=0x%016llx", (long long)pc);
521			}
522	dpavlin	2
523	dpavlin	10	if (symbol != NULL)
524			printf(" <%s>", symbol);
525			printf(" ]\n");
526	dpavlin	2
527			do_return:
528			ninstrs_last = ninstrs;
529			mseconds_last = mseconds;
530			}
531
532
533			/*
534			* cpu_run_init():
535			*
536			* Prepare to run instructions on all CPUs in this machine. (This function
537			* should only need to be called once for each machine.)
538			*/
539	dpavlin	12	void cpu_run_init(struct machine *machine)
540	dpavlin	2	{
541			int ncpus = machine->ncpus;
542			int te;
543
544			machine->a_few_cycles = 1048576;
545			machine->ncycles_flush = 0;
546			machine->ncycles = 0;
547			machine->ncycles_show = 0;
548
549			/*
550			* Instead of doing { one cycle, check hardware ticks }, we
551			* can do { n cycles, check hardware ticks }, as long as
552			* n is at most as much as the lowest number of cycles/tick
553			* for any hardware device.
554			*/
555			for (te=0; te<machine->n_tick_entries; te++) {
556			if (machine->ticks_reset_value[te] < machine->a_few_cycles)
557			machine->a_few_cycles = machine->ticks_reset_value[te];
558			}
559
560			machine->a_few_cycles >>= 1;
561			if (machine->a_few_cycles < 1)
562			machine->a_few_cycles = 1;
563
564			if (ncpus > 1 && machine->max_random_cycles_per_chunk == 0)
565			machine->a_few_cycles = 1;
566
567			/* debug("cpu_run_init(): a_few_cycles = %i\n",
568			machine->a_few_cycles); */
569
570			/* For performance measurement: */
571			gettimeofday(&machine->starttime, NULL);
572	dpavlin	10	machine->ncycles_since_gettimeofday = 0;
573	dpavlin	2	}
574
575
576			/*
577			* add_cpu_family():
578			*
579			* Allocates a cpu_family struct and calls an init function for the
580			* family to fill in reasonable data and pointers.
581			*/
582			static void add_cpu_family(int (family_init)(struct cpu_family ), int arch)
583			{
584			struct cpu_family fp, tmp;
585			int res;
586
587			fp = malloc(sizeof(struct cpu_family));
588			if (fp == NULL) {
589			fprintf(stderr, "add_cpu_family(): out of memory\n");
590			exit(1);
591			}
592			memset(fp, 0, sizeof(struct cpu_family));
593
594			/*
595			* family_init() returns 1 if the struct has been filled with
596			* valid data, 0 if suppor for the cpu family isn't compiled
597			* into the emulator.
598			*/
599			res = family_init(fp);
600			if (!res) {
601			free(fp);
602			return;
603			}
604			fp->arch = arch;
605			fp->next = NULL;
606
607			/* Add last in family chain: */
608			tmp = first_cpu_family;
609			if (tmp == NULL) {
610			first_cpu_family = fp;
611			} else {
612			while (tmp->next != NULL)
613			tmp = tmp->next;
614			tmp->next = fp;
615			}
616			}
617
618
619			/*
620			* cpu_family_ptr_by_number():
621			*
622			* Returns a pointer to a CPU family based on the ARCH_* integers.
623			*/
624			struct cpu_family *cpu_family_ptr_by_number(int arch)
625			{
626			struct cpu_family *fp;
627			fp = first_cpu_family;
628
629			/* YUCK! This is too hardcoded! TODO */
630
631			while (fp != NULL) {
632			if (arch == fp->arch)
633			return fp;
634			fp = fp->next;
635			}
636
637			return NULL;
638			}
639
640
641			/*
642			* cpu_init():
643			*
644			* Should be called before any other cpu_*() function.
645			*/
646			void cpu_init(void)
647			{
648			/* Note: These are registered in alphabetic order. */
649	dpavlin	12
650			#ifdef ENABLE_ALPHA
651			add_cpu_family(alpha_cpu_family_init, ARCH_ALPHA);
652			#endif
653
654			#ifdef ENABLE_ARM
655	dpavlin	6	add_cpu_family(arm_cpu_family_init, ARCH_ARM);
656	dpavlin	12	#endif
657
658	dpavlin	14	#ifdef ENABLE_AVR
659			add_cpu_family(avr_cpu_family_init, ARCH_AVR);
660			#endif
661
662			#ifdef ENABLE_HPPA
663			add_cpu_family(hppa_cpu_family_init, ARCH_HPPA);
664			#endif
665
666			#ifdef ENABLE_I960
667			add_cpu_family(i960_cpu_family_init, ARCH_I960);
668			#endif
669
670	dpavlin	12	#ifdef ENABLE_IA64
671			add_cpu_family(ia64_cpu_family_init, ARCH_IA64);
672			#endif
673
674			#ifdef ENABLE_M68K
675			add_cpu_family(m68k_cpu_family_init, ARCH_M68K);
676			#endif
677
678			#ifdef ENABLE_MIPS
679	dpavlin	2	add_cpu_family(mips_cpu_family_init, ARCH_MIPS);
680	dpavlin	12	#endif
681
682	dpavlin	20	#ifdef ENABLE_NEWMIPS
683			add_cpu_family(newmips_cpu_family_init, ARCH_NEWMIPS);
684			#endif
685
686	dpavlin	12	#ifdef ENABLE_PPC
687	dpavlin	2	add_cpu_family(ppc_cpu_family_init, ARCH_PPC);
688	dpavlin	12	#endif
689
690	dpavlin	14	#ifdef ENABLE_SH
691			add_cpu_family(sh_cpu_family_init, ARCH_SH);
692			#endif
693
694	dpavlin	12	#ifdef ENABLE_SPARC
695			add_cpu_family(sparc_cpu_family_init, ARCH_SPARC);
696			#endif
697
698			#ifdef ENABLE_X86
699	dpavlin	4	add_cpu_family(x86_cpu_family_init, ARCH_X86);
700	dpavlin	12	#endif
701	dpavlin	2	}
702