valgrind/valgrind-3.5.0-i686-nops.patch
Jakub Jelinek 0332e150c8 3.5.0-15
2010-04-07 14:39:29 +00:00

40 lines
1.7 KiB
Diff

--- valgrind/VEX/priv/guest_x86_toIR.c.jj 2010-04-07 01:25:15.000000000 +0200
+++ valgrind/VEX/priv/guest_x86_toIR.c 2010-04-07 09:13:57.000000000 +0200
@@ -7919,15 +7919,27 @@ DisResult disInstr_X86_WRK (
delta += 5;
goto decode_success;
}
- /* don't barf on recent binutils padding
- 66 2e 0f 1f 84 00 00 00 00 00 nopw %cs:0x0(%eax,%eax,1) */
- if (code[0] == 0x66
- && code[1] == 0x2E && code[2] == 0x0F && code[3] == 0x1F
- && code[4] == 0x84 && code[5] == 0x00 && code[6] == 0x00
- && code[7] == 0x00 && code[8] == 0x00 && code[9] == 0x00 ) {
- DIP("nopw %%cs:0x0(%%eax,%%eax,1)\n");
- delta += 10;
- goto decode_success;
+ /* Don't barf on recent binutils padding
+ 66 2e 0f 1f 84 00 00 00 00 00 nopw %cs:0x0(%eax,%eax,1)
+ 66 66 2e 0f 1f 84 00 00 00 00 00 nopw %cs:0x0(%eax,%eax,1)
+ 66 66 66 2e 0f 1f 84 00 00 00 00 00 nopw %cs:0x0(%eax,%eax,1)
+ 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 nopw %cs:0x0(%eax,%eax,1)
+ 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 nopw %cs:0x0(%eax,%eax,1) */
+ if (code[0] == 0x66) {
+ Int data16_cnt;
+ for (data16_cnt = 1; data16_cnt < 6; data16_cnt++)
+ if (code[data16_cnt] != 0x66)
+ break;
+
+ if (code[data16_cnt] == 0x2E && code[data16_cnt + 1] == 0x0F
+ && code[data16_cnt + 2] == 0x1F && code[data16_cnt + 3] == 0x84
+ && code[data16_cnt + 4] == 0x00 && code[data16_cnt + 5] == 0x00
+ && code[data16_cnt + 6] == 0x00 && code[data16_cnt + 7] == 0x00
+ && code[data16_cnt + 8] == 0x00 ) {
+ DIP("nopw %%cs:0x0(%%eax,%%eax,1)\n");
+ delta += 9 + data16_cnt;
+ goto decode_success;
+ }
}
}