Le 18/07/2022 à 18:40, Helge Deller a écrit :
This program:int main(void) { asm("bv %r0(%r0)"); return 0; } produces on real hppa hardware the expected segfault: SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x3} --- killed by SIGSEGV +++ Segmentation fault But when run on linux-user you get instead internal qemu errors: ERROR: linux-user/hppa/cpu_loop.c:172:cpu_loop: code should not be reached Bail out! ERROR: linux-user/hppa/cpu_loop.c:172:cpu_loop: code should not be reached ERROR: accel/tcg/cpu-exec.c:933:cpu_exec: assertion failed: (cpu == current_cpu) Bail out! ERROR: accel/tcg/cpu-exec.c:933:cpu_exec: assertion failed: (cpu == current_cpu) Fix it by adding the missing case for the EXCP_IMP trap in cpu_loop() and raise a segfault. Signed-off-by: Helge Deller <del...@gmx.de> --- Changes: v2: Dropped the "+++" in the commit message - it confused b4 and git-am. no functional changes. --- diff --git a/linux-user/hppa/cpu_loop.c b/linux-user/hppa/cpu_loop.c index a576d1a249..8f374aeef6 100644 --- a/linux-user/hppa/cpu_loop.c +++ b/linux-user/hppa/cpu_loop.c @@ -143,6 +143,9 @@ void cpu_loop(CPUHPPAState *env) env->iaoq_f = env->gr[31]; env->iaoq_b = env->gr[31] + 4; break; + case EXCP_IMP: + force_sig_fault(TARGET_SIGSEGV, TARGET_SEGV_MAPERR, env->iaoq_f); + break; case EXCP_ILL: force_sig_fault(TARGET_SIGILL, TARGET_ILL_ILLOPN, env->iaoq_f); break;
Applied to my linux-user-for-7.1 branch. Thanks, Laurent
