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Optimise instructions accessing CP0, by Aurelien Jarno.

Browse source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3235 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-09-25 14:49:47 +00:00
parent b570094d9b
commit 387a8fe505
4 changed files with 49 additions and 34 deletions
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3
target-mips/helper.c
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@ -371,6 +371,7 @@ void do_interrupt (CPUState *env)
env->hflags |= MIPS_HFLAG_DM;
env->hflags |= MIPS_HFLAG_64;
env->hflags &= ~MIPS_HFLAG_UM;
env->hflags |= MIPS_HFLAG_CP0;
/* EJTAG probe trap enable is not implemented... */
if (!(env->CP0_Status & (1 << CP0St_EXL)))
env->CP0_Cause &= ~(1 << CP0Ca_BD);
@ -397,6 +398,7 @@ void do_interrupt (CPUState *env)
env->CP0_Status |= (1 << CP0St_ERL) | (1 << CP0St_BEV);
env->hflags |= MIPS_HFLAG_64;
env->hflags &= ~MIPS_HFLAG_UM;
env->hflags |= MIPS_HFLAG_CP0;
if (!(env->CP0_Status & (1 << CP0St_EXL)))
env->CP0_Cause &= ~(1 << CP0Ca_BD);
env->PC[env->current_tc] = (int32_t)0xBFC00000;
@ -499,6 +501,7 @@ void do_interrupt (CPUState *env)
env->CP0_Status |= (1 << CP0St_EXL);
env->hflags |= MIPS_HFLAG_64;
env->hflags &= ~MIPS_HFLAG_UM;
env->hflags |= MIPS_HFLAG_CP0;
}
env->hflags &= ~MIPS_HFLAG_BMASK;
if (env->CP0_Status & (1 << CP0St_BEV)) {