ref: 42ec5a0729a73a383203ba969be07fc0b2ee8ecd
dir: /sys/src/libmach/8.c/
/*
* 386 definition
*/
#include <u.h>
#include <libc.h>
#include <bio.h>
#include <mach.h>
#pragma pack on
#include "/386/include/ureg.h"
#pragma pack off
#define REGOFF(x) (uintptr)(&((struct Ureg *) 0)->x)
#define PC REGOFF(pc)
#define SP REGOFF(sp)
#define AX REGOFF(ax)
#define REGSIZE sizeof(struct Ureg)
#define FP_CTLS(x) (REGSIZE+2*(x))
#define FP_CTL(x) (REGSIZE+4*(x))
#define FP_REG(x) (FP_CTL(8)+16*(x))
#define XM_REG(x) (FP_CTL(8)+8*16+16*(x))
#define FPREGSIZE 512
Reglist i386reglist[] = {
{"DI", REGOFF(di), RINT, 'X'},
{"SI", REGOFF(si), RINT, 'X'},
{"BP", REGOFF(bp), RINT, 'X'},
{"BX", REGOFF(bx), RINT, 'X'},
{"DX", REGOFF(dx), RINT, 'X'},
{"CX", REGOFF(cx), RINT, 'X'},
{"AX", REGOFF(ax), RINT, 'X'},
{"GS", REGOFF(gs), RINT, 'X'},
{"FS", REGOFF(fs), RINT, 'X'},
{"ES", REGOFF(es), RINT, 'X'},
{"DS", REGOFF(ds), RINT, 'X'},
{"TRAP", REGOFF(trap), RINT, 'X'},
{"ECODE", REGOFF(ecode), RINT, 'X'},
{"PC", PC, RINT, 'X'},
{"CS", REGOFF(cs), RINT, 'X'},
{"EFLAGS", REGOFF(flags), RINT, 'X'},
{"SP", SP, RINT, 'X'},
{"SS", REGOFF(ss), RINT, 'X'},
{"FCW", FP_CTLS(0), RFLT, 'x'},
{"FSW", FP_CTLS(1), RFLT, 'x'},
{"FTW", FP_CTLS(2), RFLT, 'b'},
{"FOP", FP_CTLS(3), RFLT, 'x'},
{"FIP", FP_CTL(2), RFLT, 'X'},
{"FCS", FP_CTLS(6), RFLT, 'x'},
{"FDP", FP_CTL(4), RFLT, 'X'},
{"FDS", FP_CTLS(10), RFLT, 'x'},
{"MXCSR", FP_CTL(6), RFLT, 'X'},
{"MXCSRMASK", FP_CTL(7), RFLT, 'X'},
{"M0", FP_REG(0), RFLT, 'F'}, /* assumes double */
{"M1", FP_REG(1), RFLT, 'F'},
{"M2", FP_REG(2), RFLT, 'F'},
{"M3", FP_REG(3), RFLT, 'F'},
{"M4", FP_REG(4), RFLT, 'F'},
{"M5", FP_REG(5), RFLT, 'F'},
{"M6", FP_REG(6), RFLT, 'F'},
{"M7", FP_REG(7), RFLT, 'F'},
{"X0", XM_REG(0), RFLT, 'F'}, /* assumes double */
{"X1", XM_REG(1), RFLT, 'F'},
{"X2", XM_REG(2), RFLT, 'F'},
{"X3", XM_REG(3), RFLT, 'F'},
{"X4", XM_REG(4), RFLT, 'F'},
{"X5", XM_REG(5), RFLT, 'F'},
{"X6", XM_REG(6), RFLT, 'F'},
{"X7", XM_REG(7), RFLT, 'F'},
{"F0", FP_REG(0), RFLT, '3'},
{"F1", FP_REG(1), RFLT, '3'},
{"F2", FP_REG(2), RFLT, '3'},
{"F3", FP_REG(3), RFLT, '3'},
{"F4", FP_REG(4), RFLT, '3'},
{"F5", FP_REG(5), RFLT, '3'},
{"F6", FP_REG(6), RFLT, '3'},
{"F7", FP_REG(7), RFLT, '3'},
{ 0 }
};
Mach mi386 =
{
"386",
MI386, /* machine type */
i386reglist, /* register list */
REGSIZE, /* size of registers in bytes */
FPREGSIZE, /* size of fp registers in bytes */
"PC", /* name of PC */
"SP", /* name of SP */
0, /* link register */
"setSB", /* static base register name (bogus anyways) */
0, /* static base register value */
0x1000, /* page size */
0xF0100000ULL, /* kernel base */
0xF0000000ULL, /* kernel text mask */
0x7FFFFFFFULL, /* user stack top */
1, /* quantization of pc */
4, /* szaddr */
4, /* szreg */
4, /* szfloat */
8, /* szdouble */
};