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MCF5208 emulation.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2924 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-06-03 11:13:39 +00:00
parent 62ea5b0bd3
commit 20dcee9483
13 changed files with 833 additions and 296 deletions
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18
target-m68k/op_helper.c
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@ -87,6 +87,7 @@ static void do_rte(void)
env->pc = ldl_kernel(sp + 4);
sp |= (fmt >> 28) & 3;
env->sr = fmt & 0xffff;
m68k_switch_sp(env);
env->aregs[7] = sp + 8;
}
@ -128,9 +129,6 @@ void do_interrupt(int is_hw)
}
}
/* TODO: Implement USP. */
sp = env->aregs[7];
vector = env->exception_index << 2;
fmt |= 0x40000000;
@ -138,6 +136,15 @@ void do_interrupt(int is_hw)
fmt |= vector << 16;
fmt |= env->sr;
env->sr |= SR_S;
if (is_hw) {
env->sr = (env->sr & ~SR_I) | (env->pending_level << SR_I_SHIFT);
env->sr &= ~SR_M;
}
m68k_switch_sp(env);
sp = env->aregs[7];
/* ??? This could cause MMU faults. */
sp &= ~3;
sp -= 4;
@ -145,11 +152,6 @@ void do_interrupt(int is_hw)
sp -= 4;
stl_kernel(sp, fmt);
env->aregs[7] = sp;
env->sr |= SR_S;
if (is_hw) {
env->sr = (env->sr & ~SR_I) | (env->pending_level << SR_I_SHIFT);
env->sr &= ~SR_M;
}
/* Jump to vector. */
env->pc = ldl_kernel(env->vbr + vector);
}