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added RDTSC support

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This commit is contained in:
Ronald G. Minnich 2002-04-15 03:58:03 +00:00
parent e035ff6685
commit eee4f7dfc6
2 changed files with 38 additions and 3 deletions
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4
util/mkelfImage/Makefile
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@ -4,8 +4,8 @@
# that way it survives across cvs updates.
# Then do a 'make install'
# the result will be a directory tree that you can run mkelfImage in
PREFIX=/usr/local/
PREFIX= /users/rminnich/src/bios/mkelf2
#PREFIX=/usr/local/
#PREFIX= /users/rminnich/src/bios/mkelf2
PERLPATH=/usr/bin/perl
VERSION="1.12"
DATE="26 January 2002"

37
util/vgabios/x86emu/src/x86emu/ops2.c
View file

@ -40,6 +40,7 @@
/* $XFree86: xc/extras/x86emu/src/x86emu/ops2.c,v 1.4 2000/11/16 19:44:50 eich Exp $ */
#include "x86emu/x86emui.h"
#include <asm/msr.h>
/*----------------------------- Implementation ----------------------------*/
@ -62,6 +63,40 @@ void x86emuOp2_illegal_op(
END_OF_INSTR();
}
/****************************************************************************
REMARKS:
Handles opcode 0x0f,0x31
****************************************************************************/
void x86emuOp2_rdtsc(u8 op2)
{
static unsigned long eax = 0, edx = 0;
char *name = 0;
/* rdtsc */
START_OF_INSTR();
switch (op2) {
case 0x31:
name = "RDTSC\t";
//rdtsc(eax, edx);
eax++;
if (eax == 0)
edx++;
M.x86.R_EAX = eax;
M.x86.R_EDX = edx;
break;
default:
DECODE_PRINTF("ILLEGAL EXTENDED X86 OPCODE(0f)\n");
TRACE_REGS();
printk("%04x:%04x: %02X ILLEGAL EXTENDED X86 OPCODE!\n",
M.x86.R_CS, M.x86.R_IP-2,op2);
HALT_SYS();
break;
}
DECODE_PRINTF(name);
TRACE_AND_STEP();
DECODE_CLEAR_SEGOVR();
END_OF_INSTR();
}
#define xorl(a,b) ((a) && !(b)) || (!(a) && (b))
/****************************************************************************
@ -2579,7 +2614,7 @@ void (*x86emu_optab2[256])(u8) =
/* 0x2f */ x86emuOp2_illegal_op,
/* 0x30 */ x86emuOp2_illegal_op,
/* 0x31 */ x86emuOp2_illegal_op,
/* 0x31 */ x86emuOp2_rdtsc,
/* 0x32 */ x86emuOp2_illegal_op,
/* 0x33 */ x86emuOp2_illegal_op,
/* 0x34 */ x86emuOp2_illegal_op,