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author | H. Peter Anvin <hpa@zytor.com> | 2008-03-26 16:25:35 -0700 |
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committer | H. Peter Anvin <hpa@zytor.com> | 2008-03-26 16:25:35 -0700 |
commit | 9eddd22a7b53b1d02fbae0d987df8af122924248 (patch) | |
tree | 882f5152880b0b1aa2d7a0619d30065acc69fb16 /gpxe/src/arch/i386/include/bochs.h | |
parent | bbb8f15936b851e6a0ef6f7bb2c95197bff35994 (diff) | |
download | syslinux-9eddd22a7b53b1d02fbae0d987df8af122924248.tar.gz |
Add gPXE into the source tree; build unified imagesyslinux-3.70-pre7
Diffstat (limited to 'gpxe/src/arch/i386/include/bochs.h')
-rw-r--r-- | gpxe/src/arch/i386/include/bochs.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/gpxe/src/arch/i386/include/bochs.h b/gpxe/src/arch/i386/include/bochs.h new file mode 100644 index 00000000..9d090fc1 --- /dev/null +++ b/gpxe/src/arch/i386/include/bochs.h @@ -0,0 +1,34 @@ +#ifndef BOCHS_H +#define BOCHS_H + +/** @file + * + * bochs breakpoints + * + * This file defines @c bochsbp, the magic breakpoint instruction that + * is incredibly useful when debugging under bochs. This file should + * never be included in production code. + * + * Use the pseudo-instruction @c bochsbp in assembly code, or the + * bochsbp() function in C code. + * + */ + +#ifdef ASSEMBLY + +/* Breakpoint for when debugging under bochs */ +#define bochsbp xchgw %bx, %bx +#define BOCHSBP bochsbp + +#else /* ASSEMBLY */ + +/** Breakpoint for when debugging under bochs */ +static inline void bochsbp ( void ) { + __asm__ __volatile__ ( "xchgw %bx, %bx" ); +} + +#endif /* ASSEMBLY */ + +#warning "bochs.h should not be included into production code" + +#endif /* BOCHS_H */ |