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more precise cpu_interrupt()

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@276 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-06-25 16:16:50 +00:00
parent 83479e770d
commit ea041c0e33
2 changed files with 69 additions and 3 deletions
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3
cpu-i386.h
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@ -251,7 +251,7 @@ typedef struct CPUX86State {
int error_code;
int exception_is_int;
int exception_next_eip;
struct TranslationBlock *current_tb; /* currently executing TB */
uint32_t cr[5]; /* NOTE: cr1 is unused */
uint32_t dr[8]; /* debug registers */
int interrupt_request; /* if true, will exit from cpu_exec() ASAP */
@ -295,7 +295,6 @@ int cpu_x86_signal_handler(int host_signum, struct siginfo *info,
/* MMU defines */
void cpu_x86_init_mmu(CPUX86State *env);
extern CPUX86State *global_env;
extern int phys_ram_size;
extern int phys_ram_fd;
extern uint8_t *phys_ram_base;

67
exec.c
View File

@ -26,7 +26,13 @@
#include <inttypes.h>
#include <sys/mman.h>
#include "config.h"
#ifdef TARGET_I386
#include "cpu-i386.h"
#endif
#ifdef TARGET_ARM
#include "cpu-arm.h"
#endif
#include "exec.h"
//#define DEBUG_TB_INVALIDATE
@ -564,6 +570,67 @@ TranslationBlock *tb_find_pc(unsigned long tc_ptr)
return &tbs[m_max];
}
static void tb_reset_jump_recursive(TranslationBlock *tb);
static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n)
{
TranslationBlock *tb1, *tb_next, **ptb;
unsigned int n1;
tb1 = tb->jmp_next[n];
if (tb1 != NULL) {
/* find head of list */
for(;;) {
n1 = (long)tb1 & 3;
tb1 = (TranslationBlock *)((long)tb1 & ~3);
if (n1 == 2)
break;
tb1 = tb1->jmp_next[n1];
}
/* we are now sure now that tb jumps to tb1 */
tb_next = tb1;
/* remove tb from the jmp_first list */
ptb = &tb_next->jmp_first;
for(;;) {
tb1 = *ptb;
n1 = (long)tb1 & 3;
tb1 = (TranslationBlock *)((long)tb1 & ~3);
if (n1 == n && tb1 == tb)
break;
ptb = &tb1->jmp_next[n1];
}
*ptb = tb->jmp_next[n];
tb->jmp_next[n] = NULL;
/* suppress the jump to next tb in generated code */
tb_reset_jump(tb, n);
/* suppress jumps in the tb on which we could have jump */
tb_reset_jump_recursive(tb_next);
}
}
static void tb_reset_jump_recursive(TranslationBlock *tb)
{
tb_reset_jump_recursive2(tb, 0);
tb_reset_jump_recursive2(tb, 1);
}
void cpu_interrupt(CPUState *env)
{
TranslationBlock *tb;
env->interrupt_request = 1;
/* if the cpu is currently executing code, we must unlink it and
all the potentially executing TB */
tb = env->current_tb;
if (tb) {
tb_reset_jump_recursive(tb);
}
}
void cpu_abort(CPUState *env, const char *fmt, ...)
{
va_list ap;