0.3.4/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 1.298 2005/06/27 10:43:16 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 "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 = malloc(sizeof(struct cpu));
        if (cpu == NULL) {
                fprintf(stderr, "out of memory\n");
                exit(1);
        }

        memset(cpu, 0, 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;

        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 dependant.)
 *  coprocs: set bit 0..x to dump registers in coproc 0..x. (CPU dependant.)
 */
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_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 dependant 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 emul *emul, 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;
        int is_32bit = 0, instrs_per_cycle = 1;
        char *symbol;
        int64_t mseconds, ninstrs;
        struct timeval tv;
        int h, m, s, ms, d;

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

        switch (machine->arch) {
        case ARCH_MIPS:
                if (machine->cpus[machine->bootstrap_cpu]->cd.mips.
                    cpu_type.isa_level < 3 || machine->cpus[machine->
                    bootstrap_cpu]->cd.mips.cpu_type.isa_level == 32)
                        is_32bit = 1;
                instrs_per_cycle = machine->cpus[machine->bootstrap_cpu]->
                    cd.mips.cpu_type.instrs_per_cycle;
                break;
        case ARCH_ARM:
                is_32bit = 1;
                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:  */
        printf("; i/s=%lli avg=%lli; ",
            (long long) ((long long)1000 * (ninstrs-ninstrs_last)
                / (mseconds-mseconds_last)),
            (long long) ((long long)1000 * ninstrs / mseconds));

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

        if (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 emul *emul, 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.  */
        add_cpu_family(arm_cpu_family_init, ARCH_ARM);
        add_cpu_family(mips_cpu_family_init, ARCH_MIPS);
        add_cpu_family(ppc_cpu_family_init, ARCH_PPC);
        add_cpu_family(urisc_cpu_family_init, ARCH_URISC);
        add_cpu_family(x86_cpu_family_init, ARCH_X86);
}

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	10	* $Id: cpu.c,v 1.298 2005/06/27 10:43:16 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			#include "misc.h"
41
42
43			extern int quiet_mode;
44			extern int show_opcode_statistics;
45
46
47			static struct cpu_family *first_cpu_family = NULL;
48
49
50			/*
51			* cpu_new():
52			*
53			* Create a new cpu object. Each family is tried in sequence until a
54			* CPU family recognizes the cpu_type_name.
55			*/
56			struct cpu cpu_new(struct memory mem, struct machine *machine,
57			int cpu_id, char *name)
58			{
59	dpavlin	10	struct cpu *cpu;
60	dpavlin	2	struct cpu_family *fp;
61			char *cpu_type_name;
62
63			if (name == NULL) {
64			fprintf(stderr, "cpu_new(): cpu name = NULL?\n");
65			exit(1);
66			}
67
68			cpu_type_name = strdup(name);
69			if (cpu_type_name == NULL) {
70			fprintf(stderr, "cpu_new(): out of memory\n");
71			exit(1);
72			}
73
74	dpavlin	10	cpu = malloc(sizeof(struct cpu));
75			if (cpu == NULL) {
76			fprintf(stderr, "out of memory\n");
77			exit(1);
78			}
79
80			memset(cpu, 0, sizeof(struct cpu));
81			cpu->memory_rw = NULL;
82			cpu->name = cpu_type_name;
83			cpu->mem = mem;
84			cpu->machine = machine;
85			cpu->cpu_id = cpu_id;
86			cpu->byte_order = EMUL_LITTLE_ENDIAN;
87			cpu->bootstrap_cpu_flag = 0;
88			cpu->running = 0;
89
90	dpavlin	2	fp = first_cpu_family;
91
92			while (fp != NULL) {
93			if (fp->cpu_new != NULL) {
94	dpavlin	10	if (fp->cpu_new(cpu, mem, machine, cpu_id,
95			cpu_type_name)) {
96			/* Sanity check: */
97			if (cpu->memory_rw == NULL) {
98			fatal("\ncpu_new(): memory_rw == "
99			"NULL\n");
100	dpavlin	2	exit(1);
101			}
102	dpavlin	10	return cpu;
103	dpavlin	2	}
104			}
105
106			fp = fp->next;
107			}
108
109	dpavlin	6	fatal("\ncpu_new(): unknown cpu type '%s'\n", cpu_type_name);
110	dpavlin	2	exit(1);
111			}
112
113
114			/*
115			* cpu_show_full_statistics():
116			*
117			* Show detailed statistics on opcode usage on each cpu.
118			*/
119			void cpu_show_full_statistics(struct machine *m)
120			{
121			if (m->cpu_family == NULL \|\|
122			m->cpu_family->show_full_statistics == NULL)
123			fatal("cpu_show_full_statistics(): NULL\n");
124			else
125			m->cpu_family->show_full_statistics(m);
126			}
127
128
129			/*
130			* cpu_tlbdump():
131			*
132			* Called from the debugger to dump the TLB in a readable format.
133			* x is the cpu number to dump, or -1 to dump all CPUs.
134			*
135			* If rawflag is nonzero, then the TLB contents isn't formated nicely,
136			* just dumped.
137			*/
138			void cpu_tlbdump(struct machine *m, int x, int rawflag)
139			{
140			if (m->cpu_family == NULL \|\| m->cpu_family->tlbdump == NULL)
141			fatal("cpu_tlbdump(): NULL\n");
142			else
143			m->cpu_family->tlbdump(m, x, rawflag);
144			}
145
146
147			/*
148			* cpu_register_match():
149			*
150			* Used by the debugger.
151			*/
152			void cpu_register_match(struct machine m, char name,
153			int writeflag, uint64_t valuep, int match_register)
154			{
155			if (m->cpu_family == NULL \|\| m->cpu_family->register_match == NULL)
156			fatal("cpu_register_match(): NULL\n");
157			else
158			m->cpu_family->register_match(m, name, writeflag,
159			valuep, match_register);
160			}
161
162
163			/*
164			* cpu_disassemble_instr():
165			*
166			* Convert an instruction word into human readable format, for instruction
167			* tracing.
168			*/
169			int cpu_disassemble_instr(struct machine m, struct cpu cpu,
170			unsigned char *instr, int running, uint64_t addr, int bintrans)
171			{
172			if (m->cpu_family == NULL \|\| m->cpu_family->disassemble_instr == NULL) {
173			fatal("cpu_disassemble_instr(): NULL\n");
174			return 0;
175			} else
176			return m->cpu_family->disassemble_instr(cpu, instr,
177			running, addr, bintrans);
178			}
179
180
181			/*
182			* cpu_register_dump():
183			*
184			* Dump cpu registers in a relatively readable format.
185			*
186			* gprs: set to non-zero to dump GPRs. (CPU dependant.)
187			* coprocs: set bit 0..x to dump registers in coproc 0..x. (CPU dependant.)
188			*/
189			void cpu_register_dump(struct machine m, struct cpu cpu,
190			int gprs, int coprocs)
191			{
192			if (m->cpu_family == NULL \|\| m->cpu_family->register_dump == NULL)
193			fatal("cpu_register_dump(): NULL\n");
194			else
195			m->cpu_family->register_dump(cpu, gprs, coprocs);
196			}
197
198
199			/*
200			* cpu_interrupt():
201			*
202			* Assert an interrupt.
203			* Return value is 1 if the interrupt was asserted, 0 otherwise.
204			*/
205			int cpu_interrupt(struct cpu *cpu, uint64_t irq_nr)
206			{
207			if (cpu->machine->cpu_family == NULL \|\|
208			cpu->machine->cpu_family->interrupt == NULL) {
209			fatal("cpu_interrupt(): NULL\n");
210			return 0;
211			} else
212			return cpu->machine->cpu_family->interrupt(cpu, irq_nr);
213			}
214
215
216			/*
217			* cpu_interrupt_ack():
218			*
219			* Acknowledge an interrupt.
220			* Return value is 1 if the interrupt was deasserted, 0 otherwise.
221			*/
222			int cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr)
223			{
224			if (cpu->machine->cpu_family == NULL \|\|
225			cpu->machine->cpu_family->interrupt_ack == NULL) {
226			/* debug("cpu_interrupt_ack(): NULL\n"); */
227			return 0;
228			} else
229			return cpu->machine->cpu_family->interrupt_ack(cpu, irq_nr);
230			}
231
232
233			/*
234			* cpu_run():
235			*
236			* Run instructions on all CPUs in this machine, for a "medium duration"
237			* (or until all CPUs have halted).
238			*
239			* Return value is 1 if anything happened, 0 if all CPUs are stopped.
240			*/
241			int cpu_run(struct emul emul, struct machine m)
242			{
243			if (m->cpu_family == NULL \|\| m->cpu_family->run == NULL) {
244			fatal("cpu_run(): NULL\n");
245			return 0;
246			} else
247			return m->cpu_family->run(emul, m);
248			}
249
250
251			/*
252			* cpu_dumpinfo():
253			*
254			* Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar)
255			* is outputed, and it is up to CPU dependant code to complete the line.
256			*/
257			void cpu_dumpinfo(struct machine m, struct cpu cpu)
258			{
259			debug("cpu%i: %s, %s", cpu->cpu_id, cpu->name,
260			cpu->running? "running" : "stopped");
261
262			if (m->cpu_family == NULL \|\| m->cpu_family->dumpinfo == NULL)
263			fatal("cpu_dumpinfo(): NULL\n");
264			else
265			m->cpu_family->dumpinfo(cpu);
266			}
267
268
269			/*
270			* cpu_list_available_types():
271			*
272			* Print a list of available CPU types for each cpu family.
273			*/
274			void cpu_list_available_types(void)
275			{
276			struct cpu_family *fp;
277			int iadd = 4;
278
279			fp = first_cpu_family;
280
281			if (fp == NULL) {
282			debug("No CPUs defined!\n");
283			return;
284			}
285
286			while (fp != NULL) {
287			debug("%s:\n", fp->name);
288			debug_indentation(iadd);
289			if (fp->list_available_types != NULL)
290			fp->list_available_types();
291			else
292			debug("(internal error: list_available_types"
293			" = NULL)\n");
294			debug_indentation(-iadd);
295
296			fp = fp->next;
297			}
298			}
299
300
301			/*
302			* cpu_run_deinit():
303			*
304			* Shuts down all CPUs in a machine when ending a simulation. (This function
305			* should only need to be called once for each machine.)
306			*/
307			void cpu_run_deinit(struct emul emul, struct machine machine)
308			{
309			int te;
310
311			/*
312			* Two last ticks of every hardware device. This will allow
313			* framebuffers to draw the last updates to the screen before
314			* halting.
315			*/
316			for (te=0; te<machine->n_tick_entries; te++) {
317			machine->tick_func[te](machine->cpus[0],
318			machine->tick_extra[te]);
319			machine->tick_func[te](machine->cpus[0],
320			machine->tick_extra[te]);
321			}
322
323			debug("cpu_run_deinit(): All CPUs halted.\n");
324
325			if (machine->show_nr_of_instructions \|\| !quiet_mode)
326	dpavlin	10	cpu_show_cycles(machine, 1);
327	dpavlin	2
328			if (show_opcode_statistics)
329			cpu_show_full_statistics(machine);
330
331			fflush(stdout);
332			}
333
334
335			/*
336			* cpu_show_cycles():
337			*
338			* If automatic adjustment of clock interrupts is turned on, then recalculate
339			* emulated_hz. Also, if show_nr_of_instructions is on, then print a
340			* line to stdout about how many instructions/cycles have been executed so
341			* far.
342			*/
343	dpavlin	10	void cpu_show_cycles(struct machine *machine, int forced)
344	dpavlin	2	{
345			uint64_t offset, pc;
346	dpavlin	10	int is_32bit = 0, instrs_per_cycle = 1;
347	dpavlin	2	char *symbol;
348			int64_t mseconds, ninstrs;
349			struct timeval tv;
350			int h, m, s, ms, d;
351
352			static int64_t mseconds_last = 0;
353			static int64_t ninstrs_last = -1;
354
355	dpavlin	10	switch (machine->arch) {
356			case ARCH_MIPS:
357			if (machine->cpus[machine->bootstrap_cpu]->cd.mips.
358			cpu_type.isa_level < 3 \|\| machine->cpus[machine->
359			bootstrap_cpu]->cd.mips.cpu_type.isa_level == 32)
360			is_32bit = 1;
361			instrs_per_cycle = machine->cpus[machine->bootstrap_cpu]->
362			cd.mips.cpu_type.instrs_per_cycle;
363			break;
364			case ARCH_ARM:
365			is_32bit = 1;
366			break;
367	dpavlin	2	}
368
369			pc = machine->cpus[machine->bootstrap_cpu]->pc;
370
371			gettimeofday(&tv, NULL);
372	dpavlin	10	mseconds = (tv.tv_sec - machine->starttime.tv_sec) * 1000
373			+ (tv.tv_usec - machine->starttime.tv_usec) / 1000;
374	dpavlin	2
375			if (mseconds == 0)
376			mseconds = 1;
377
378			if (mseconds - mseconds_last == 0)
379			mseconds ++;
380
381	dpavlin	10	ninstrs = machine->ncycles_since_gettimeofday * instrs_per_cycle;
382	dpavlin	2
383			if (machine->automatic_clock_adjustment) {
384			static int first_adjustment = 1;
385
386			/* Current nr of cycles per second: */
387			int64_t cur_cycles_per_second = 1000 *
388			(ninstrs-ninstrs_last) / (mseconds-mseconds_last)
389			/ instrs_per_cycle;
390
391			if (cur_cycles_per_second < 1000000)
392			cur_cycles_per_second = 1000000;
393
394			if (first_adjustment) {
395			machine->emulated_hz = cur_cycles_per_second;
396			first_adjustment = 0;
397			} else {
398			machine->emulated_hz = (15 * machine->emulated_hz +
399			cur_cycles_per_second) / 16;
400			}
401
402			debug("[ updating emulated_hz to %lli Hz ]\n",
403			(long long)machine->emulated_hz);
404			}
405
406
407			/* RETURN here, unless show_nr_of_instructions (-N) is turned on: */
408			if (!machine->show_nr_of_instructions && !forced)
409			goto do_return;
410
411	dpavlin	10	printf("[ %lli instrs",
412			(long long)(machine->ncycles * instrs_per_cycle));
413	dpavlin	2
414			if (!machine->automatic_clock_adjustment) {
415			d = machine->emulated_hz / 1000;
416			if (d < 1)
417			d = 1;
418	dpavlin	10	ms = machine->ncycles / d;
419	dpavlin	2	h = ms / 3600000;
420			ms -= 3600000 * h;
421			m = ms / 60000;
422			ms -= 60000 * m;
423			s = ms / 1000;
424			ms -= 1000 * s;
425
426			printf("emulated time = %02i:%02i:%02i.%03i; ", h, m, s, ms);
427			}
428
429			/* Instructions per second, and average so far: */
430	dpavlin	10	printf("; i/s=%lli avg=%lli; ",
431	dpavlin	2	(long long) ((long long)1000 * (ninstrs-ninstrs_last)
432			/ (mseconds-mseconds_last)),
433			(long long) ((long long)1000 * ninstrs / mseconds));
434
435			symbol = get_symbol_name(&machine->symbol_context, pc, &offset);
436
437			if (is_32bit)
438	dpavlin	10	printf("pc=0x%08x", (int)pc);
439	dpavlin	2	else
440	dpavlin	10	printf("pc=0x%016llx", (long long)pc);
441	dpavlin	2
442	dpavlin	10	if (symbol != NULL)
443			printf(" <%s>", symbol);
444			printf(" ]\n");
445	dpavlin	2
446			do_return:
447			ninstrs_last = ninstrs;
448			mseconds_last = mseconds;
449			}
450
451
452			/*
453			* cpu_run_init():
454			*
455			* Prepare to run instructions on all CPUs in this machine. (This function
456			* should only need to be called once for each machine.)
457			*/
458			void cpu_run_init(struct emul emul, struct machine machine)
459			{
460			int ncpus = machine->ncpus;
461			int te;
462
463			machine->a_few_cycles = 1048576;
464			machine->ncycles_flush = 0;
465			machine->ncycles = 0;
466			machine->ncycles_show = 0;
467
468			/*
469			* Instead of doing { one cycle, check hardware ticks }, we
470			* can do { n cycles, check hardware ticks }, as long as
471			* n is at most as much as the lowest number of cycles/tick
472			* for any hardware device.
473			*/
474			for (te=0; te<machine->n_tick_entries; te++) {
475			if (machine->ticks_reset_value[te] < machine->a_few_cycles)
476			machine->a_few_cycles = machine->ticks_reset_value[te];
477			}
478
479			machine->a_few_cycles >>= 1;
480			if (machine->a_few_cycles < 1)
481			machine->a_few_cycles = 1;
482
483			if (ncpus > 1 && machine->max_random_cycles_per_chunk == 0)
484			machine->a_few_cycles = 1;
485
486			/* debug("cpu_run_init(): a_few_cycles = %i\n",
487			machine->a_few_cycles); */
488
489			/* For performance measurement: */
490			gettimeofday(&machine->starttime, NULL);
491	dpavlin	10	machine->ncycles_since_gettimeofday = 0;
492	dpavlin	2	}
493
494
495			/*
496			* add_cpu_family():
497			*
498			* Allocates a cpu_family struct and calls an init function for the
499			* family to fill in reasonable data and pointers.
500			*/
501			static void add_cpu_family(int (family_init)(struct cpu_family ), int arch)
502			{
503			struct cpu_family fp, tmp;
504			int res;
505
506			fp = malloc(sizeof(struct cpu_family));
507			if (fp == NULL) {
508			fprintf(stderr, "add_cpu_family(): out of memory\n");
509			exit(1);
510			}
511			memset(fp, 0, sizeof(struct cpu_family));
512
513			/*
514			* family_init() returns 1 if the struct has been filled with
515			* valid data, 0 if suppor for the cpu family isn't compiled
516			* into the emulator.
517			*/
518			res = family_init(fp);
519			if (!res) {
520			free(fp);
521			return;
522			}
523			fp->arch = arch;
524			fp->next = NULL;
525
526			/* Add last in family chain: */
527			tmp = first_cpu_family;
528			if (tmp == NULL) {
529			first_cpu_family = fp;
530			} else {
531			while (tmp->next != NULL)
532			tmp = tmp->next;
533			tmp->next = fp;
534			}
535			}
536
537
538			/*
539			* cpu_family_ptr_by_number():
540			*
541			* Returns a pointer to a CPU family based on the ARCH_* integers.
542			*/
543			struct cpu_family *cpu_family_ptr_by_number(int arch)
544			{
545			struct cpu_family *fp;
546			fp = first_cpu_family;
547
548			/* YUCK! This is too hardcoded! TODO */
549
550			while (fp != NULL) {
551			if (arch == fp->arch)
552			return fp;
553			fp = fp->next;
554			}
555
556			return NULL;
557			}
558
559
560			/*
561			* cpu_init():
562			*
563			* Should be called before any other cpu_*() function.
564			*/
565			void cpu_init(void)
566			{
567			/* Note: These are registered in alphabetic order. */
568	dpavlin	6	add_cpu_family(arm_cpu_family_init, ARCH_ARM);
569	dpavlin	2	add_cpu_family(mips_cpu_family_init, ARCH_MIPS);
570			add_cpu_family(ppc_cpu_family_init, ARCH_PPC);
571			add_cpu_family(urisc_cpu_family_init, ARCH_URISC);
572	dpavlin	4	add_cpu_family(x86_cpu_family_init, ARCH_X86);
573	dpavlin	2	}
574