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[librm] Provide an abstraction wrapper for prot_call

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-02-18 23:23:38 +00:00
parent 196f0f2551
commit 31b5c2e753
20 changed files with 77 additions and 60 deletions
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2
src/arch/i386/include/bits/compiler.h
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@@ -9,7 +9,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#ifndef ASSEMBLY
/** Declare a function with standard calling conventions */
#define __asmcall __attribute__ (( cdecl, regparm(0) ))
#define __asmcall __attribute__ (( used, cdecl, regparm(0) ))
/**
* Declare a function with libgcc implicit linkage

18
src/arch/i386/interface/syslinux/comboot_call.c
View File

@@ -660,34 +660,28 @@ void hook_comboot_interrupts ( ) {
__asm__ __volatile__ (
TEXT16_CODE ( "\nint20_wrapper:\n\t"
"pushl %0\n\t"
"call prot_call\n\t"
VIRT_CALL ( int20 )
"clc\n\t"
"call patch_cf\n\t"
"iret\n\t" )
: : "i" ( int20 ) );
"iret\n\t" ) );
hook_bios_interrupt ( 0x20, ( intptr_t ) int20_wrapper, &int20_vector );
__asm__ __volatile__ (
TEXT16_CODE ( "\nint21_wrapper:\n\t"
"pushl %0\n\t"
"call prot_call\n\t"
VIRT_CALL ( int21 )
"clc\n\t"
"call patch_cf\n\t"
"iret\n\t" )
: : "i" ( int21 ) );
"iret\n\t" ) );
hook_bios_interrupt ( 0x21, ( intptr_t ) int21_wrapper, &int21_vector );
__asm__ __volatile__ (
TEXT16_CODE ( "\nint22_wrapper:\n\t"
"pushl %0\n\t"
"call prot_call\n\t"
VIRT_CALL ( int22 )
"clc\n\t"
"call patch_cf\n\t"
"iret\n\t" )
: : "i" ( int22) );
"iret\n\t" ) );
hook_bios_interrupt ( 0x22, ( intptr_t ) int22_wrapper, &int22_vector );
}