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added cpu_reset() 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@940 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-06-20 13:01:25 +00:00
parent a2f659ee48
commit ffddfee379
2 changed files with 38 additions and 29 deletions
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1
target-i386/cpu.h
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@ -352,6 +352,7 @@ typedef struct CPUX86State {
CPUTLBEntry tlb_read[2][CPU_TLB_SIZE];
CPUTLBEntry tlb_write[2][CPU_TLB_SIZE];
/* from this point: preserved by CPU reset */
/* ice debug support */
uint32_t breakpoints[MAX_BREAKPOINTS];
int nb_breakpoints;

66
target-i386/helper2.c
View File

@ -45,7 +45,6 @@ _syscall3(int, modify_ldt, int, func, void *, ptr, unsigned long, bytecount)
CPUX86State *cpu_x86_init(void)
{
CPUX86State *env;
int i;
static int inited;
cpu_exec_init();
@ -54,10 +53,46 @@ CPUX86State *cpu_x86_init(void)
if (!env)
return NULL;
memset(env, 0, sizeof(CPUX86State));
/* init various static tables */
if (!inited) {
inited = 1;
optimize_flags_init();
}
#ifdef USE_CODE_COPY
/* testing code for code copy case */
{
struct modify_ldt_ldt_s ldt;
ldt.entry_number = 1;
ldt.base_addr = (unsigned long)env;
ldt.limit = (sizeof(CPUState) + 0xfff) >> 12;
ldt.seg_32bit = 1;
ldt.contents = MODIFY_LDT_CONTENTS_DATA;
ldt.read_exec_only = 0;
ldt.limit_in_pages = 1;
ldt.seg_not_present = 0;
ldt.useable = 1;
modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7));
cpu_single_env = env;
}
#endif
cpu_reset(env);
return env;
}
/* NOTE: must be called outside the CPU execute loop */
void cpu_reset(CPUX86State *env)
{
int i;
memset(env, 0, offsetof(CPUX86State, breakpoints));
tlb_flush(env, 1);
/* init to reset state */
tlb_flush(env, 1);
#ifdef CONFIG_SOFTMMU
env->hflags |= HF_SOFTMMU_MASK;
#endif
@ -89,33 +124,6 @@ CPUX86State *cpu_x86_init(void)
for(i = 0;i < 8; i++)
env->fptags[i] = 1;
env->fpuc = 0x37f;
/* init various static tables */
if (!inited) {
inited = 1;
optimize_flags_init();
}
#ifdef USE_CODE_COPY
/* testing code for code copy case */
{
struct modify_ldt_ldt_s ldt;
ldt.entry_number = 1;
ldt.base_addr = (unsigned long)env;
ldt.limit = (sizeof(CPUState) + 0xfff) >> 12;
ldt.seg_32bit = 1;
ldt.contents = MODIFY_LDT_CONTENTS_DATA;
ldt.read_exec_only = 0;
ldt.limit_in_pages = 1;
ldt.seg_not_present = 0;
ldt.useable = 1;
modify_ldt(1, &ldt, sizeof(ldt)); /* write ldt entry */
asm volatile ("movl %0, %%fs" : : "r" ((1 << 3) | 7));
cpu_single_env = env;
}
#endif
return env;
}
void cpu_x86_close(CPUX86State *env)