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target/ppc: Improve syscall exception logging 

system calls (at least in Linux) use registers r3-r8 for inputs, so
include those registers in the dump.

This also adds a mode for PAPR hcalls, which have a different calling
convention.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20200317054918.199161-1-npiggin@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Nicholas Piggin 2020-03-17 15:49:17 +10:00 committed by David Gibson
parent 570a921482
commit 6dc6b55791
1 changed files with 26 additions and 4 deletions
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30
target/ppc/excp_helper.c
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@ -57,12 +57,29 @@ static void ppc_hw_interrupt(CPUPPCState *env)
#else /* defined(CONFIG_USER_ONLY) */
static inline void dump_syscall(CPUPPCState *env)
{
qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64 " r3=%016" PRIx64
" r4=%016" PRIx64 " r5=%016" PRIx64 " r6=%016" PRIx64
qemu_log_mask(CPU_LOG_INT, "syscall r0=%016" PRIx64
" r3=%016" PRIx64 " r4=%016" PRIx64 " r5=%016" PRIx64
" r6=%016" PRIx64 " r7=%016" PRIx64 " r8=%016" PRIx64
" nip=" TARGET_FMT_lx "\n",
ppc_dump_gpr(env, 0), ppc_dump_gpr(env, 3),
ppc_dump_gpr(env, 4), ppc_dump_gpr(env, 5),
ppc_dump_gpr(env, 6), env->nip);
ppc_dump_gpr(env, 6), ppc_dump_gpr(env, 7),
ppc_dump_gpr(env, 8), env->nip);
}
static inline void dump_hcall(CPUPPCState *env)
{
qemu_log_mask(CPU_LOG_INT, "hypercall r3=%016" PRIx64
" r4=%016" PRIx64 " r5=%016" PRIx64 " r6=%016" PRIx64
" r7=%016" PRIx64 " r8=%016" PRIx64 " r9=%016" PRIx64
" r10=%016" PRIx64 " r11=%016" PRIx64 " r12=%016" PRIx64
" nip=" TARGET_FMT_lx "\n",
ppc_dump_gpr(env, 3), ppc_dump_gpr(env, 4),
ppc_dump_gpr(env, 5), ppc_dump_gpr(env, 6),
ppc_dump_gpr(env, 7), ppc_dump_gpr(env, 8),
ppc_dump_gpr(env, 9), ppc_dump_gpr(env, 10),
ppc_dump_gpr(env, 11), ppc_dump_gpr(env, 12),
env->nip);
}
static int powerpc_reset_wakeup(CPUState *cs, CPUPPCState *env, int excp,
@ -379,9 +396,14 @@ static inline void powerpc_excp(PowerPCCPU *cpu, int excp_model, int excp)
}
break;
case POWERPC_EXCP_SYSCALL: /* System call exception */
dump_syscall(env);
lev = env->error_code;
if ((lev == 1) && cpu->vhyp) {
dump_hcall(env);
} else {
dump_syscall(env);
}
/*
* We need to correct the NIP which in this case is supposed
* to point to the next instruction