diff options
| author | Michael Brown <mcb30@etherboot.org> | 2008-09-28 23:06:53 +0100 |
|---|---|---|
| committer | Michael Brown <mcb30@etherboot.org> | 2008-09-28 23:06:53 +0100 |
| commit | e3c550717864cb60b982389eb845b825bb9574e8 (patch) | |
| tree | 33140a95ed3d2847a84c4806d5353d8fe44a2070 | |
| parent | 39047c56361383016ae7eee910099b2a315c607a (diff) | |
| download | ipxe-e3c550717864cb60b982389eb845b825bb9574e8.tar.gz | |
[i386] Add dump_regs() debug call
Use as "call dump_regs" from any real-mode code within .text16.
Should preserve all registers and flags.
| -rw-r--r-- | src/arch/i386/core/dumpregs.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/arch/i386/core/dumpregs.c b/src/arch/i386/core/dumpregs.c new file mode 100644 index 000000000..89426d583 --- /dev/null +++ b/src/arch/i386/core/dumpregs.c @@ -0,0 +1,23 @@ +#include <stdio.h> +#include <realmode.h> + +void __cdecl _dump_regs ( struct i386_all_regs *ix86 ) { + + __asm__ __volatile__ ( + TEXT16_CODE ( ".globl dump_regs\n\t" + "\ndump_regs:\n\t" + "pushl $_dump_regs\n\t" + "pushw %%cs\n\t" + "call prot_call\n\t" + "addr32 leal 4(%%esp), %%esp\n\t" + "ret\n\t" ) : : ); + + printf ( "EAX=%08lx EBX=%08lx ECX=%08lx EDX=%08lx\n" + "ESI=%08lx EDI=%08lx EBP=%08lx ESP=%08lx\n" + "CS=%04x SS=%04x DS=%04x ES=%04x FS=%04x GS=%04x\n", + ix86->regs.eax, ix86->regs.ebx, ix86->regs.ecx, + ix86->regs.edx, ix86->regs.esi, ix86->regs.edi, + ix86->regs.ebp, ix86->regs.esp, + ix86->segs.cs, ix86->segs.ss, ix86->segs.ds, + ix86->segs.es, ix86->segs.fs, ix86->segs.gs ); +} |