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Thumb semihosting fixes. 

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3729 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-11-24 23:22:11 +00:00
parent eea589cc22
commit 2ad207d4a0
1 changed files with 10 additions and 1 deletions
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11
target-arm/helper.c
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@ -602,6 +602,15 @@ void do_interrupt_v7m(CPUARMState *env)
armv7m_nvic_set_pending(env->v7m.nvic, ARMV7M_EXCP_MEM);
return;
case EXCP_BKPT:
if (semihosting_enabled) {
int nr;
nr = lduw_code(env->regs[15]) & 0xff;
if (nr == 0xab) {
env->regs[15] += 2;
env->regs[0] = do_arm_semihosting(env);
return;
}
}
armv7m_nvic_set_pending(env->v7m.nvic, ARMV7M_EXCP_DEBUG);
return;
case EXCP_IRQ:
@ -687,7 +696,7 @@ void do_interrupt(CPUARMState *env)
break;
case EXCP_BKPT:
/* See if this is a semihosting syscall. */
if (env->thumb) {
if (env->thumb && semihosting_enabled) {
mask = lduw_code(env->regs[15]) & 0xff;
if (mask == 0xab
&& (env->uncached_cpsr & CPSR_M) != ARM_CPU_MODE_USR) {