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m68k/ColdFire system emulation.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2851 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-05-23 19:58:11 +00:00
parent 9daea9067a
commit 0633879f1a
19 changed files with 1548 additions and 207 deletions
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18
cpu-exec.c
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@ -196,7 +196,7 @@ static inline TranslationBlock *tb_find_fast(void)
cs_base = 0;
pc = env->PC;
#elif defined(TARGET_M68K)
flags = env->fpcr & M68K_FPCR_PREC;
flags = (env->fpcr & M68K_FPCR_PREC) | (env->sr & SR_S);
cs_base = 0;
pc = env->pc;
#elif defined(TARGET_SH4)
@ -297,7 +297,7 @@ int cpu_exec(CPUState *env1)
return EXCP_HALTED;
}
}
#elif defined(TARGET_ALPHA)
#elif defined(TARGET_ALPHA) || defined(TARGET_M68K)
if (env1->halted) {
if (env1->interrupt_request & CPU_INTERRUPT_HARD) {
env1->halted = 0;
@ -390,6 +390,8 @@ int cpu_exec(CPUState *env1)
do_interrupt(env);
#elif defined(TARGET_ALPHA)
do_interrupt(env);
#elif defined(TARGET_M68K)
do_interrupt(0);
#endif
}
env->exception_index = -1;
@ -542,6 +544,18 @@ int cpu_exec(CPUState *env1)
if (interrupt_request & CPU_INTERRUPT_HARD) {
do_interrupt(env);
}
#elif defined(TARGET_M68K)
if (interrupt_request & CPU_INTERRUPT_HARD
&& ((env->sr & SR_I) >> SR_I_SHIFT)
< env->pending_level) {
/* Real hardware gets the interrupt vector via an
IACK cycle at this point. Current emulated
hardware doesn't rely on this, so we
provide/save the vector when the interrupt is
first signalled. */
env->exception_index = env->pending_vector;
do_interrupt(1);
}
#endif
/* Don't use the cached interupt_request value,
do_interrupt may have updated the EXITTB flag. */