summaryrefslogtreecommitdiff
path: root/sysdeps/mach/hurd/i386/exc2signal.c
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/mach/hurd/i386/exc2signal.c')
-rw-r--r--sysdeps/mach/hurd/i386/exc2signal.c122
1 files changed, 76 insertions, 46 deletions
diff --git a/sysdeps/mach/hurd/i386/exc2signal.c b/sysdeps/mach/hurd/i386/exc2signal.c
index 57bc05df99..1b94e79e04 100644
--- a/sysdeps/mach/hurd/i386/exc2signal.c
+++ b/sysdeps/mach/hurd/i386/exc2signal.c
@@ -23,8 +23,8 @@
/* Translate the Mach exception codes, as received in an `exception_raise' RPC,
into a signal number and signal subcode. */
-void
-_hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
+static void
+exception2signal (struct hurd_signal_detail *detail, int *signo, int posix)
{
detail->error = 0;
@@ -36,44 +36,62 @@ _hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
break;
case EXC_BAD_ACCESS:
- if (detail->exc_code == KERN_INVALID_ADDRESS
- || detail->exc_code == KERN_PROTECTION_FAILURE
- || detail->exc_code == KERN_WRITE_PROTECTION_FAILURE)
- *signo = SIGSEGV;
- else
- *signo = SIGBUS;
- detail->code = detail->exc_subcode;
+ switch (detail->exc_code)
+ {
+ case KERN_INVALID_ADDRESS:
+ case KERN_MEMORY_FAILURE:
+ *signo = SIGSEGV;
+ detail->code = posix ? SEGV_MAPERR : detail->exc_subcode;
+ break;
+
+ case KERN_PROTECTION_FAILURE:
+ case KERN_WRITE_PROTECTION_FAILURE:
+ *signo = SIGSEGV;
+ detail->code = posix ? SEGV_ACCERR : detail->exc_subcode;
+ break;
+
+ default:
+ *signo = SIGBUS;
+ detail->code = posix ? BUS_ADRERR : detail->exc_subcode;
+ break;
+ }
detail->error = detail->exc_code;
break;
case EXC_BAD_INSTRUCTION:
*signo = SIGILL;
- if (detail->exc_code == EXC_I386_INVOP)
- detail->code = ILL_INVOPR_FAULT;
- else if (detail->exc_code == EXC_I386_STKFLT)
- detail->code = ILL_STACK_FAULT;
- else
- detail->code = 0;
+ switch (detail->exc_code)
+ {
+ case EXC_I386_INVOP:
+ detail->code = posix ? ILL_ILLOPC : ILL_INVOPR_FAULT;
+ break;
+
+ case EXC_I386_STKFLT:
+ detail->code = posix ? ILL_BADSTK : ILL_STACK_FAULT;
+ break;
+
+ default:
+ detail->code = 0;
+ break;
+ }
break;
case EXC_ARITHMETIC:
+ *signo = SIGFPE;
switch (detail->exc_code)
{
case EXC_I386_DIV: /* integer divide by zero */
- *signo = SIGFPE;
- detail->code = FPE_INTDIV_FAULT;
+ detail->code = posix ? FPE_INTDIV : FPE_INTDIV_FAULT;
break;
case EXC_I386_INTO: /* integer overflow */
- *signo = SIGFPE;
- detail->code = FPE_INTOVF_TRAP;
+ detail->code = posix ? FPE_INTOVF : FPE_INTOVF_TRAP;
break;
/* These aren't anywhere documented or used in Mach 3.0. */
case EXC_I386_NOEXT:
case EXC_I386_EXTOVR:
default:
- *signo = SIGFPE;
detail->code = 0;
break;
@@ -82,51 +100,43 @@ _hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
Give an error code corresponding to the first bit set. */
if (detail->exc_subcode & FPS_IE)
{
- *signo = SIGILL;
- detail->code = ILL_FPEOPR_FAULT;
+ /* NB: We used to send SIGILL here but we can't distinguish
+ POSIX vs. legacy with respect to what signal we send. */
+ detail->code = posix ? FPE_FLTINV : 0 /*ILL_FPEOPR_FAULT*/;
}
else if (detail->exc_subcode & FPS_DE)
{
- *signo = SIGFPE;
- detail->code = FPE_FLTDNR_FAULT;
+ detail->code = posix ? FPE_FLTUND : FPE_FLTDNR_FAULT;
}
else if (detail->exc_subcode & FPS_ZE)
{
- *signo = SIGFPE;
- detail->code = FPE_FLTDIV_FAULT;
+ detail->code = posix ? FPE_FLTDIV : FPE_FLTDIV_FAULT;
}
else if (detail->exc_subcode & FPS_OE)
{
- *signo = SIGFPE;
- detail->code = FPE_FLTOVF_FAULT;
+ detail->code = posix ? FPE_FLTOVF : FPE_FLTOVF_FAULT;
}
else if (detail->exc_subcode & FPS_UE)
{
- *signo = SIGFPE;
- detail->code = FPE_FLTUND_FAULT;
+ detail->code = posix ? FPE_FLTUND : FPE_FLTUND_FAULT;
}
else if (detail->exc_subcode & FPS_PE)
{
- *signo = SIGFPE;
- detail->code = FPE_FLTINX_FAULT;
+ detail->code = posix ? FPE_FLTRES : FPE_FLTINX_FAULT;
}
else
{
- *signo = SIGFPE;
detail->code = 0;
}
break;
/* These two can only be arithmetic exceptions if we
- are in V86 mode, which sounds like emulation to me.
- (See Mach 3.0 i386/trap.c.) */
+ are in V86 mode. (See Mach 3.0 i386/trap.c.) */
case EXC_I386_EMERR:
- *signo = SIGFPE;
- detail->code = FPE_EMERR_FAULT;
+ detail->code = posix ? 0 : FPE_EMERR_FAULT;
break;
case EXC_I386_BOUND:
- *signo = SIGFPE;
- detail->code = FPE_EMBND_FAULT;
+ detail->code = posix ? FPE_FLTSUB : FPE_EMBND_FAULT;
break;
}
break;
@@ -143,7 +153,7 @@ _hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
if (detail->exc_code == EXC_I386_BOUND)
{
*signo = SIGFPE;
- detail->code = FPE_SUBRNG_FAULT;
+ detail->code = posix ? FPE_FLTSUB : FPE_SUBRNG_FAULT;
}
else
{
@@ -154,13 +164,33 @@ _hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
case EXC_BREAKPOINT:
*signo = SIGTRAP;
- if (detail->exc_code == EXC_I386_SGL)
- detail->code = DBG_SINGLE_TRAP;
- else if (detail->exc_code == EXC_I386_BPT)
- detail->code = DBG_BRKPNT_FAULT;
- else
- detail->code = 0;
+ switch (detail->exc_code)
+ {
+ case EXC_I386_SGL:
+ detail->code = posix ? TRAP_BRKPT : DBG_SINGLE_TRAP;
+ break;
+
+ case EXC_I386_BPT:
+ detail->code = posix ? TRAP_BRKPT : DBG_BRKPNT_FAULT;
+ break;
+
+ default:
+ detail->code = 0;
+ break;
+ }
break;
}
}
+
+void
+_hurd_exception2signal (struct hurd_signal_detail *detail, int *signo)
+{
+ exception2signal (detail, signo, 1);
+}
libc_hidden_def (_hurd_exception2signal)
+
+void
+_hurd_exception2signal_legacy (struct hurd_signal_detail *detail, int *signo)
+{
+ exception2signal (detail, signo, 0);
+}