diff options
Diffstat (limited to 'linux/src/include/asm-i386/math_emu.h')
| -rw-r--r-- | linux/src/include/asm-i386/math_emu.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/linux/src/include/asm-i386/math_emu.h b/linux/src/include/asm-i386/math_emu.h new file mode 100644 index 00000000..92083a5d --- /dev/null +++ b/linux/src/include/asm-i386/math_emu.h @@ -0,0 +1,57 @@ +#ifndef _I386_MATH_EMU_H +#define _I386_MATH_EMU_H + +#include <asm/sigcontext.h> + +void restore_i387_soft(struct _fpstate *buf); +struct _fpstate * save_i387_soft(struct _fpstate * buf); + +struct fpu_reg { + char sign; + char tag; + long exp; + unsigned sigl; + unsigned sigh; +}; + + +/* This structure matches the layout of the data saved to the stack + following a device-not-present interrupt, part of it saved + automatically by the 80386/80486. + */ +struct info { + long ___orig_eip; + long ___ret_from_system_call; + long ___ebx; + long ___ecx; + long ___edx; + long ___esi; + long ___edi; + long ___ebp; + long ___eax; + long ___ds; + long ___es; + long ___fs; + long ___gs; + long ___orig_eax; + long ___eip; + long ___cs; + long ___eflags; + long ___esp; + long ___ss; + long ___vm86_es; /* This and the following only in vm86 mode */ + long ___vm86_ds; + long ___vm86_fs; + long ___vm86_gs; +}; + +/* Interface for converting data between the emulator format + * and the hardware format. Used for core dumping and for + * ptrace(2) */ +void hardreg_to_softreg(const char hardreg[10], + struct fpu_reg *soft_reg); + +void softreg_to_hardreg(const struct fpu_reg *rp, char d[10], + long int control_word); + +#endif |