diff options
Diffstat (limited to 'target-i386/helper.c')
| -rw-r--r-- | target-i386/helper.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index 27a7a5559c..f2305e32c4 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -24,7 +24,7 @@ #if 0 #define raise_exception_err(a, b)\ do {\ - printf("raise_exception line=%d\n", __LINE__);\ + fprintf(logfile, "raise_exception line=%d\n", __LINE__);\ (raise_exception_err)(a, b);\ } while (0) #endif @@ -859,10 +859,11 @@ void do_interrupt(int intno, int is_int, int error_code, if (loglevel & (CPU_LOG_PCALL | CPU_LOG_INT)) { if ((env->cr[0] & CR0_PE_MASK)) { static int count; - fprintf(logfile, "%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:%08x SP=%04x:%08x", + fprintf(logfile, "%6d: v=%02x e=%04x i=%d cpl=%d IP=%04x:%08x pc=%08x SP=%04x:%08x", count, intno, error_code, is_int, env->hflags & HF_CPL_MASK, env->segs[R_CS].selector, EIP, + (int)env->segs[R_CS].base + EIP, env->segs[R_SS].selector, ESP); if (intno == 0x0e) { fprintf(logfile, " CR2=%08x", env->cr[2]); @@ -1990,6 +1991,32 @@ void helper_fstt_ST0_A0(void) helper_fstt(ST0, (uint8_t *)A0); } +void fpu_set_exception(int mask) +{ + env->fpus |= mask; + if (env->fpus & (~env->fpuc & FPUC_EM)) + env->fpus |= FPUS_SE | FPUS_B; +} + +CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b) +{ + if (b == 0.0) + fpu_set_exception(FPUS_ZE); + return a / b; +} + +void fpu_raise_exception(void) +{ + if (env->cr[0] & CR0_NE_MASK) { + raise_exception(EXCP10_COPR); + } +#if !defined(CONFIG_USER_ONLY) + else { + cpu_set_ferr(env); + } +#endif +} + /* BCD ops */ void helper_fbld_ST0_A0(void) |