From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>, laurent@vivier.eu
Subject: [PATCH v4 19/24] linux-user/ppc: Use force_sig_fault
Date: Mon, 20 Dec 2021 13:05:23 -0800 [thread overview]
Message-ID: <20211220210529.150423-20-richard.henderson@linaro.org> (raw)
In-Reply-To: <20211220210529.150423-1-richard.henderson@linaro.org>
Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.
The fault address for POWERPC_EXCP_ISI is nip exactly, not nip - 4.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
linux-user/ppc/cpu_loop.c | 136 ++++++++------------------------------
1 file changed, 28 insertions(+), 108 deletions(-)
diff --git a/linux-user/ppc/cpu_loop.c b/linux-user/ppc/cpu_loop.c
index 483e669300..bb20300da9 100644
--- a/linux-user/ppc/cpu_loop.c
+++ b/linux-user/ppc/cpu_loop.c
@@ -76,8 +76,7 @@ int ppc_dcr_write (ppc_dcr_t *dcr_env, int dcrn, uint32_t val)
void cpu_loop(CPUPPCState *env)
{
CPUState *cs = env_cpu(env);
- target_siginfo_t info;
- int trapnr;
+ int trapnr, si_signo, si_code;
target_ulong ret;
for(;;) {
@@ -102,61 +101,10 @@ void cpu_loop(CPUPPCState *env)
"Aborting\n");
break;
case POWERPC_EXCP_DSI: /* Data storage exception */
- /* XXX: check this. Seems bugged */
- switch (env->error_code & 0xFF000000) {
- case 0x40000000:
- case 0x42000000:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- break;
- case 0x04000000:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_ILLADR;
- break;
- case 0x08000000:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_ACCERR;
- break;
- default:
- /* Let's send a regular segfault... */
- EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
- env->error_code);
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- break;
- }
- info._sifields._sigfault._addr = env->spr[SPR_DAR];
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
case POWERPC_EXCP_ISI: /* Instruction storage exception */
- /* XXX: check this */
- switch (env->error_code & 0xFF000000) {
- case 0x40000000:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- break;
- case 0x10000000:
- case 0x08000000:
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_ACCERR;
- break;
- default:
- /* Let's send a regular segfault... */
- EXCP_DUMP(env, "Invalid segfault errno (%02x)\n",
- env->error_code);
- info.si_signo = TARGET_SIGSEGV;
- info.si_errno = 0;
- info.si_code = TARGET_SEGV_MAPERR;
- break;
- }
- info._sifields._sigfault._addr = env->nip - 4;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+ /* FIXME: handle maperr in ppc_cpu_record_sigsegv. */
+ force_sig_fault(TARGET_SIGSEGV, TARGET_SEGV_MAPERR,
+ env->spr[SPR_DAR]);
break;
case POWERPC_EXCP_EXTERNAL: /* External input */
cpu_abort(cs, "External interrupt while in user mode. "
@@ -167,24 +115,23 @@ void cpu_loop(CPUPPCState *env)
/* XXX: check this */
switch (env->error_code & ~0xF) {
case POWERPC_EXCP_FP:
- info.si_signo = TARGET_SIGFPE;
- info.si_errno = 0;
+ si_signo = TARGET_SIGFPE;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_FP_OX:
- info.si_code = TARGET_FPE_FLTOVF;
+ si_code = TARGET_FPE_FLTOVF;
break;
case POWERPC_EXCP_FP_UX:
- info.si_code = TARGET_FPE_FLTUND;
+ si_code = TARGET_FPE_FLTUND;
break;
case POWERPC_EXCP_FP_ZX:
case POWERPC_EXCP_FP_VXZDZ:
- info.si_code = TARGET_FPE_FLTDIV;
+ si_code = TARGET_FPE_FLTDIV;
break;
case POWERPC_EXCP_FP_XX:
- info.si_code = TARGET_FPE_FLTRES;
+ si_code = TARGET_FPE_FLTRES;
break;
case POWERPC_EXCP_FP_VXSOFT:
- info.si_code = TARGET_FPE_FLTINV;
+ si_code = TARGET_FPE_FLTINV;
break;
case POWERPC_EXCP_FP_VXSNAN:
case POWERPC_EXCP_FP_VXISI:
@@ -193,51 +140,50 @@ void cpu_loop(CPUPPCState *env)
case POWERPC_EXCP_FP_VXVC:
case POWERPC_EXCP_FP_VXSQRT:
case POWERPC_EXCP_FP_VXCVI:
- info.si_code = TARGET_FPE_FLTSUB;
+ si_code = TARGET_FPE_FLTSUB;
break;
default:
EXCP_DUMP(env, "Unknown floating point exception (%02x)\n",
env->error_code);
+ si_code = 0;
break;
}
break;
case POWERPC_EXCP_INVAL:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
+ si_signo = TARGET_SIGILL;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_INVAL_INVAL:
- info.si_code = TARGET_ILL_ILLOPC;
+ si_code = TARGET_ILL_ILLOPC;
break;
case POWERPC_EXCP_INVAL_LSWX:
- info.si_code = TARGET_ILL_ILLOPN;
+ si_code = TARGET_ILL_ILLOPN;
break;
case POWERPC_EXCP_INVAL_SPR:
- info.si_code = TARGET_ILL_PRVREG;
+ si_code = TARGET_ILL_PRVREG;
break;
case POWERPC_EXCP_INVAL_FP:
- info.si_code = TARGET_ILL_COPROC;
+ si_code = TARGET_ILL_COPROC;
break;
default:
EXCP_DUMP(env, "Unknown invalid operation (%02x)\n",
env->error_code & 0xF);
- info.si_code = TARGET_ILL_ILLADR;
+ si_code = TARGET_ILL_ILLADR;
break;
}
break;
case POWERPC_EXCP_PRIV:
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
+ si_signo = TARGET_SIGILL;
switch (env->error_code & 0xF) {
case POWERPC_EXCP_PRIV_OPC:
- info.si_code = TARGET_ILL_PRVOPC;
+ si_code = TARGET_ILL_PRVOPC;
break;
case POWERPC_EXCP_PRIV_REG:
- info.si_code = TARGET_ILL_PRVREG;
+ si_code = TARGET_ILL_PRVREG;
break;
default:
EXCP_DUMP(env, "Unknown privilege violation (%02x)\n",
env->error_code & 0xF);
- info.si_code = TARGET_ILL_PRVOPC;
+ si_code = TARGET_ILL_PRVOPC;
break;
}
break;
@@ -250,28 +196,19 @@ void cpu_loop(CPUPPCState *env)
env->error_code);
break;
}
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+ force_sig_fault(si_signo, si_code, env->nip);
break;
case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_COPROC;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+ case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
+ case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
+ case POWERPC_EXCP_VPU: /* Vector unavailable exception */
+ force_sig_fault(TARGET_SIGILL, TARGET_ILL_COPROC, env->nip);
break;
case POWERPC_EXCP_SYSCALL: /* System call exception */
case POWERPC_EXCP_SYSCALL_VECTORED:
cpu_abort(cs, "Syscall exception while in user mode. "
"Aborting\n");
break;
- case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_COPROC;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
case POWERPC_EXCP_DECR: /* Decrementer exception */
cpu_abort(cs, "Decrementer interrupt while in user mode. "
"Aborting\n");
@@ -292,13 +229,6 @@ void cpu_loop(CPUPPCState *env)
cpu_abort(cs, "Instruction TLB exception while in user mode. "
"Aborting\n");
break;
- case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_COPROC;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */
cpu_abort(cs, "Embedded floating-point data IRQ not handled\n");
break;
@@ -355,13 +285,6 @@ void cpu_loop(CPUPPCState *env)
cpu_abort(cs, "Hypervisor instruction segment exception "
"while in user mode. Aborting\n");
break;
- case POWERPC_EXCP_VPU: /* Vector unavailable exception */
- info.si_signo = TARGET_SIGILL;
- info.si_errno = 0;
- info.si_code = TARGET_ILL_COPROC;
- info._sifields._sigfault._addr = env->nip;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
- break;
case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */
cpu_abort(cs, "Programmable interval timer interrupt "
"while in user mode. Aborting\n");
@@ -444,10 +367,7 @@ void cpu_loop(CPUPPCState *env)
env->gpr[3] = ret;
break;
case EXCP_DEBUG:
- info.si_signo = TARGET_SIGTRAP;
- info.si_errno = 0;
- info.si_code = TARGET_TRAP_BRKPT;
- queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+ force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->nip);
break;
case EXCP_INTERRUPT:
/* just indicate that signals should be handled asap */
--
2.25.1
next prev parent reply other threads:[~2021-12-20 21:15 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-20 21:05 [PATCH v4 00/24] linux-user: Clean up siginfo_t handling Richard Henderson
2021-12-20 21:05 ` [PATCH v4 01/24] linux-user/alpha: Set TRAP_UNK for bugchk and unknown gentrap Richard Henderson
2021-12-20 21:05 ` [PATCH v4 02/24] linux-user/alpha: Set FPE_FLTUNK for gentrap ROPRAND Richard Henderson
2021-12-20 21:05 ` [PATCH v4 03/24] linux-user/alpha: Use force_sig_fault Richard Henderson
2021-12-20 21:05 ` [PATCH v4 04/24] linux-user/cris: " Richard Henderson
2021-12-20 21:05 ` [PATCH v4 05/24] linux-user/hppa: " Richard Henderson
2021-12-20 21:05 ` [PATCH v4 06/24] linux-user/hppa: Use the proper si_code for PRIV_OPR, PRIV_REG, OVERFLOW Richard Henderson
2021-12-20 21:05 ` [PATCH v4 07/24] linux-user: Remove TARGET_NSIGFPE Richard Henderson
2021-12-20 22:42 ` Philippe Mathieu-Daudé
2021-12-20 21:05 ` [PATCH v4 08/24] linux-user/hppa: Set FPE_CONDTRAP for COND Richard Henderson
2021-12-20 22:44 ` Philippe Mathieu-Daudé
2021-12-20 21:05 ` [PATCH v4 09/24] linux-user/i386: Split out maybe_handle_vm86_trap Richard Henderson
2021-12-20 21:05 ` [PATCH v4 10/24] linux-user/i386: Use force_sig, force_sig_fault Richard Henderson
2021-12-20 21:05 ` [PATCH v4 11/24] linux-user/m68k: Use force_sig_fault Richard Henderson
2021-12-20 21:05 ` [PATCH v4 12/24] linux-user/microblaze: " Richard Henderson
2021-12-20 21:05 ` [PATCH v4 13/24] linux-user/microblaze: Fix SIGFPE si_codes Richard Henderson
2021-12-20 21:05 ` [PATCH v4 14/24] linux-user/mips: Improve do_break Richard Henderson
2021-12-20 21:05 ` [PATCH v4 15/24] linux-user/mips: Use force_sig_fault Richard Henderson
2021-12-20 21:05 ` [PATCH v4 16/24] target/mips: Extract break code into env->error_code Richard Henderson
2021-12-20 21:05 ` [PATCH v4 17/24] target/mips: Extract trap " Richard Henderson
2021-12-20 21:05 ` [PATCH v4 18/24] linux-user/openrisc: Use force_sig_fault Richard Henderson
2021-12-20 21:05 ` Richard Henderson [this message]
2021-12-20 21:05 ` [PATCH v4 20/24] linux-user/riscv: " Richard Henderson
2021-12-20 21:05 ` [PATCH v4 21/24] linux-user/s390x: " Richard Henderson
2021-12-20 21:05 ` [PATCH v4 22/24] linux-user/sh4: " Richard Henderson
2021-12-20 21:05 ` [PATCH v4 23/24] linux-user/sparc: " Richard Henderson
2021-12-20 21:05 ` [PATCH v4 24/24] linux-user/xtensa: " Richard Henderson
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