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Provide access to rm_cs and rm_ds from protected-mode code.

pull/1/head
Michael Brown 2006-05-13 11:45:31 +00:00
parent dc8d429ec6
commit 5080668704
2 changed files with 6 additions and 1 deletions
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5
src/arch/i386/include/librm.h
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@ -46,8 +46,11 @@ extern char *text16;
/* Variables in librm.S, present in the normal data segment */ /* Variables in librm.S, present in the normal data segment */
extern uint16_t rm_sp; extern uint16_t rm_sp;
extern uint16_t rm_ss; extern uint16_t rm_ss;
extern uint16_t rm_cs;
extern uint32_t pm_esp; extern uint32_t pm_esp;
extern uint16_t __data16 ( rm_cs );
#define rm_cs __use_data16 ( rm_cs )
extern uint16_t __text16 ( rm_ds );
#define rm_ds __use_text16 ( rm_ds )
/* Functions that librm expects to be able to link to. Included here /* Functions that librm expects to be able to link to. Included here
* so that the compiler will catch prototype mismatches. * so that the compiler will catch prototype mismatches.

2
src/arch/i386/transitions/librm.S
View File

@ -309,7 +309,9 @@ p2r_jump_target:
.section ".data16" .section ".data16"
p2r_jump_vector: p2r_jump_vector:
.word p2r_jump_target .word p2r_jump_target
.globl rm_cs
rm_cs: .word 0 rm_cs: .word 0
.globl rm_ds
.section ".text16.data" .section ".text16.data"
rm_ds: .word 0 rm_ds: .word 0