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[ASM]

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- Use .586P for 16 bit code to allow privileged instructions, like lidt/lgdt. Found by ThFabba
- Add a 0 byte at the end to make ML fill the file up to the required length

svn path=/trunk/; revision=52327
This commit is contained in:
Timo Kreuzer 2011-06-18 09:40:44 +00:00
parent 5577c61a50
commit 014e413e00
2 changed files with 5 additions and 7 deletions
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10
reactos/boot/freeldr/freeldr/arch/realmode/i386.S
View file

@ -88,8 +88,7 @@ inrmode:
/* Load IDTR with real mode value */ /* Load IDTR with real mode value */
#ifdef _USE_ML #ifdef _USE_ML
DB 0Fh, 01h, 1Eh lidt fword ptr rmode_idtptr
DW rmode_idtptr
#else #else
lidt rmode_idtptr lidt rmode_idtptr
#endif #endif
@ -114,8 +113,7 @@ exit_to_protected:
/* Load the GDT */ /* Load the GDT */
#ifdef _USE_ML #ifdef _USE_ML
DB 0Fh, 01h, 16h lgdt fword ptr gdtptr
DW gdtptr
#else #else
lgdt gdtptr lgdt gdtptr
#endif #endif
@ -195,7 +193,7 @@ rmode_idtptr:
#include "pnp.inc" #include "pnp.inc"
#include "helpers.inc" #include "helpers.inc"
.org (FREELDR_PE_BASE - FREELDR_BASE) .org (FREELDR_PE_BASE - FREELDR_BASE - 1)
.byte 0
.endcode16 .endcode16
END END

2
reactos/include/asm/asm.inc
View file

@ -73,7 +73,7 @@ ENDM
.code16 MACRO .code16 MACRO
ASSUME nothing ASSUME nothing
.text SEGMENT use16 .text SEGMENT use16
.586 .586P
ENDM ENDM
.endcode16 MACRO .endcode16 MACRO