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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-08-21 16:39:52 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1998-08-21 16:39:52 +0000 |
| commit | eb562f2c860061868e4ea1a821a84147b694dd07 (patch) | |
| tree | 4273d9ac092dab0e00e065a365595a2b30fcc95f /c/src/exec/score/cpu/i386/cpu_asm.s | |
| parent | Spacing changes (diff) | |
| download | rtems-eb562f2c860061868e4ea1a821a84147b694dd07.tar.bz2 | |
Patch from Eric Valette <valette@crf.canon.fr>:
Here is a patch that enables to catch exception
and get message before crashing RTEMS :)
It should be generic to any Intel port although enabled
only for pc386 BSP...
[Joel] I fixed the bug I introduced in irq_asm.s...
Diffstat (limited to '')
| -rw-r--r-- | c/src/exec/score/cpu/i386/cpu_asm.s | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/c/src/exec/score/cpu/i386/cpu_asm.s b/c/src/exec/score/cpu/i386/cpu_asm.s index a0bd6ece2c..16d0a7c205 100644 --- a/c/src/exec/score/cpu/i386/cpu_asm.s +++ b/c/src/exec/score/cpu/i386/cpu_asm.s @@ -109,6 +109,105 @@ SYM (_CPU_Context_restore_fp): frstor (eax) # restore FP context ret +SYM (_Exception_Handler): + pusha # Push general purpose registers + pushl esp # Push exception frame address + movl _currentExcHandler, eax # Call function storead in _currentExcHandler + call * eax + addl $4, esp + popa # restore general purpose registers + addl $8, esp # skill vector number and faultCode + iret + +#define DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY(_vector) \ + .p2align 4 ; \ + PUBLIC (rtems_exception_prologue_ ## _vector ) ; \ +SYM (rtems_exception_prologue_ ## _vector ): \ + pushl $ _vector ; \ + jmp SYM (_Exception_Handler) ; + +#define DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY(_vector) \ + .p2align 4 ; \ + PUBLIC (rtems_exception_prologue_ ## _vector ) ; \ +SYM (rtems_exception_prologue_ ## _vector ): \ + pushl $ 0 ; \ + pushl $ _vector ; \ + jmp SYM (_Exception_Handler) ; + +/* + * Divide Error + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (0) +/* + * Debug Exception + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (1) +/* + * NMI + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (2) +/* + * Breakpoint + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (3) +/* + * Overflow + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (4) +/* + * Bound Range Exceeded + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (5) +/* + * Invalid Opcode + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (6) +/* + * No Math Coproc + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (7) +/* + * Double Fault + */ +DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (8) +/* + * Coprocessor segment overrun + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (9) +/* + * Invalid TSS + */ +DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (10) +/* + * Segment Not Present + */ +DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (11) +/* + * Stack segment Fault + */ +DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (12) +/* + * General Protection Fault + */ +DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (13) +/* + * Page Fault + */ +DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (14) +/* + * Floating point error (NB 15 is reserved it is therefor skipped) + */ +DISTINCT_EXCEPTION_WITHOUT_FAULTCODE_ENTRY (16) +/* + * Aligment Check + */ +DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (17) +/* + * Machine Check + */ +DISTINCT_EXCEPTION_WITH_FAULTCODE_ENTRY (18) + + /* * GO32 does not require these segment related routines. */ |