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x86: improve exception debugging

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We now dump more information for less common cases,
and this is now centralized code for 32-bit/64-bit.
All of this code is now correctly wrapped around
CONFIG_EXCEPTION_DEBUG. Some cruft and unused defines
removed.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-11-18 12:07:58 -08:00 • committed by Andrew Boie
commit 2b67ca8ac9
6 changed files with 125 additions and 68 deletions
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17
include/arch/x86/ia32/segmentation.h
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@ -18,23 +18,6 @@
extern "C" {
#endif
/*
* Bitmask used to determine which exceptions result in an error code being
* pushed onto the stack. The following exception vectors push an error code:
*
* Vector Mnemonic Description
* ------ ------- ----------------------
* 8 #DF Double Fault
* 10 #TS Invalid TSS
* 11 #NP Segment Not Present
* 12 #SS Stack Segment Fault
* 13 #GP General Protection Fault
* 14 #PF Page Fault
* 17 #AC Alignment Check
*/
#define _EXC_ERROR_CODE_FAULTS 0x27d00U
/* NOTE: We currently do not have definitions for 16-bit segment, currently
* assume everything we are working with is 32-bit
*/