yuzu/unicorn
1
0
Fork 0
mirror of https://github.com/yuzu-emu/unicorn.git synced 2025-03-28 23:46:55 +00:00
Code Issues Packages Projects Releases Wiki Activity

target/arm: Raise only one interrupt in arm_cpu_exec_interrupt

Browse source 
The fall through organization of this function meant that we
would raise an interrupt, then might overwrite that with another.
Since interrupt prioritization is IMPLEMENTATION DEFINED, we
can recognize these in any order we choose.

Unify the code to raise the interrupt in a block at the end.

Backports commit d63d0ec59d87a698de5ed843288f90a23470cf2e from qemu
This commit is contained in:
Richard Henderson 2020-03-21 16:42:51 -04:00 committed by Lioncash
parent d00e5ec47d
commit eb0586f9cd
1 changed files with 12 additions and 18 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

30
qemu/target/arm/cpu.c
View file

@ -526,17 +526,15 @@ bool arm_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
uint64_t hcr_el2 = arm_hcr_el2_eff(env);
uint32_t target_el;
uint32_t excp_idx;
bool ret = false;
/* The prioritization of interrupts is IMPLEMENTATION DEFINED. */
if (interrupt_request & CPU_INTERRUPT_FIQ) {
excp_idx = EXCP_FIQ;
target_el = arm_phys_excp_target_el(cs, excp_idx, cur_el, secure);
if (arm_excp_unmasked(cs, excp_idx, target_el,
cur_el, secure, hcr_el2)) {
cs->exception_index = excp_idx;
env->exception.target_el = target_el;
cc->do_interrupt(cs);
ret = true;
goto found;
}
}
if (interrupt_request & CPU_INTERRUPT_HARD) {
@ -544,10 +542,7 @@ bool arm_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
target_el = arm_phys_excp_target_el(cs, excp_idx, cur_el, secure);
if (arm_excp_unmasked(cs, excp_idx, target_el,
cur_el, secure, hcr_el2)) {
cs->exception_index = excp_idx;
env->exception.target_el = target_el;
cc->do_interrupt(cs);
ret = true;
goto found;
}
}
if (interrupt_request & CPU_INTERRUPT_VIRQ) {
@ -555,10 +550,7 @@ bool arm_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
target_el = 1;
if (arm_excp_unmasked(cs, excp_idx, target_el,
cur_el, secure, hcr_el2)) {
cs->exception_index = excp_idx;
env->exception.target_el = target_el;
cc->do_interrupt(cs);
ret = true;
goto found;
}
}
if (interrupt_request & CPU_INTERRUPT_VFIQ) {
@ -566,14 +558,16 @@ bool arm_cpu_exec_interrupt(CPUState *cs, int interrupt_request)
target_el = 1;
if (arm_excp_unmasked(cs, excp_idx, target_el,
cur_el, secure, hcr_el2)) {
cs->exception_index = excp_idx;
env->exception.target_el = target_el;
cc->do_interrupt(cs);
ret = true;
goto found;
}
}
return false;
return ret;
found:
cs->exception_index = excp_idx;
env->exception.target_el = target_el;
cc->do_interrupt(cs);
return true;
}
#if !defined(CONFIG_USER_ONLY) || !defined(TARGET_AARCH64)