From 129d8aa575b1a0c06b471a506c5a233bd270bff4 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Fri, 20 May 2011 13:30:00 -0700 Subject: target-alpha: Rationalize internal processor registers. Delete all the code that tried to emulate the real IPRs of some unnamed CPU. Replace those with just 3 slots that we can use to communicate trap information between the helper functions that signal exceptions and the OS trap handler. Signed-off-by: Richard Henderson --- linux-user/main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'linux-user') diff --git a/linux-user/main.c b/linux-user/main.c index 088def3..0954591 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -2524,9 +2524,9 @@ void cpu_loop (CPUState *env) env->lock_addr = -1; info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; - info.si_code = (page_get_flags(env->ipr[IPR_EXC_ADDR]) & PAGE_VALID + info.si_code = (page_get_flags(env->trap_arg0) & PAGE_VALID ? TARGET_SEGV_ACCERR : TARGET_SEGV_MAPERR); - info._sifields._sigfault._addr = env->ipr[IPR_EXC_ADDR]; + info._sifields._sigfault._addr = env->trap_arg0; queue_signal(env, info.si_signo, &info); break; case EXCP_DTB_MISS_PAL: @@ -2550,7 +2550,7 @@ void cpu_loop (CPUState *env) info.si_signo = TARGET_SIGBUS; info.si_errno = 0; info.si_code = TARGET_BUS_ADRALN; - info._sifields._sigfault._addr = env->ipr[IPR_EXC_ADDR]; + info._sifields._sigfault._addr = env->trap_arg0; queue_signal(env, info.si_signo, &info); break; case EXCP_OPCDEC: -- cgit v1.1 From 07b6c13b09d2e00a95e83fa76630d7c0d16c10b3 Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Fri, 20 May 2011 14:04:57 -0700 Subject: target-alpha: Tidy exception constants. There's no need to attempt to match EXCP_* values with PALcode entry point offsets. Instead, compress all the values to make for more efficient switch statements within QEMU. We will be doing TLB fill within QEMU proper, not within the PALcode, so all of the ITB/DTB miss, double fault, and access exceptions can be compressed to EXCP_MMFAULT. Compress all of the EXCP_CALL_PAL exceptions into one. Use env->error_code to store the specific entry point. Signed-off-by: Richard Henderson --- linux-user/main.c | 44 ++++++++++++++------------------------------ 1 file changed, 14 insertions(+), 30 deletions(-) (limited to 'linux-user') diff --git a/linux-user/main.c b/linux-user/main.c index 0954591..04da0a4 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -2508,19 +2508,13 @@ void cpu_loop (CPUState *env) fprintf(stderr, "Machine check exception. Exit\n"); exit(1); break; - case EXCP_ARITH: - env->lock_addr = -1; - info.si_signo = TARGET_SIGFPE; - info.si_errno = 0; - info.si_code = TARGET_FPE_FLTINV; - info._sifields._sigfault._addr = env->pc; - queue_signal(env, info.si_signo, &info); - break; - case EXCP_HW_INTERRUPT: + case EXCP_SMP_INTERRUPT: + case EXCP_CLK_INTERRUPT: + case EXCP_DEV_INTERRUPT: fprintf(stderr, "External interrupt. Exit\n"); exit(1); break; - case EXCP_DFAULT: + case EXCP_MMFAULT: env->lock_addr = -1; info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; @@ -2529,22 +2523,6 @@ void cpu_loop (CPUState *env) info._sifields._sigfault._addr = env->trap_arg0; queue_signal(env, info.si_signo, &info); break; - case EXCP_DTB_MISS_PAL: - fprintf(stderr, "MMU data TLB miss in PALcode\n"); - exit(1); - break; - case EXCP_ITB_MISS: - fprintf(stderr, "MMU instruction TLB miss\n"); - exit(1); - break; - case EXCP_ITB_ACV: - fprintf(stderr, "MMU instruction access violation\n"); - exit(1); - break; - case EXCP_DTB_MISS_NATIVE: - fprintf(stderr, "MMU data TLB miss\n"); - exit(1); - break; case EXCP_UNALIGN: env->lock_addr = -1; info.si_signo = TARGET_SIGBUS; @@ -2562,12 +2540,20 @@ void cpu_loop (CPUState *env) info._sifields._sigfault._addr = env->pc; queue_signal(env, info.si_signo, &info); break; + case EXCP_ARITH: + env->lock_addr = -1; + info.si_signo = TARGET_SIGFPE; + info.si_errno = 0; + info.si_code = TARGET_FPE_FLTINV; + info._sifields._sigfault._addr = env->pc; + queue_signal(env, info.si_signo, &info); + break; case EXCP_FEN: /* No-op. Linux simply re-enables the FPU. */ break; - case EXCP_CALL_PAL ... (EXCP_CALL_PALP - 1): + case EXCP_CALL_PAL: env->lock_addr = -1; - switch ((trapnr >> 6) | 0x80) { + switch (env->error_code) { case 0x80: /* BPT */ info.si_signo = TARGET_SIGTRAP; @@ -2658,8 +2644,6 @@ void cpu_loop (CPUState *env) goto do_sigill; } break; - case EXCP_CALL_PALP ... (EXCP_CALL_PALE - 1): - goto do_sigill; case EXCP_DEBUG: info.si_signo = gdb_handlesig (env, TARGET_SIGTRAP); if (info.si_signo) { -- cgit v1.1