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Simplify Apple CC support.

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* commands/i386/pc/drivemap_int13h.S: Use LOCAL when possible.
	Add 0 byte at the end not to have a symbol with empty target.
	* mmap/i386/pc/mmap_helper.S: Likewise.
	* genmk.rb: Ignore errors 2030 and 2050.
	* kern/i386/pc/startup.S: Use LOCAL when possible.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-03-27 00:04:14 +01:00
parent 8d2977bb7a
commit 969d1c782d
5 changed files with 58 additions and 86 deletions
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81
mmap/i386/pc/mmap_helper.S
View file

@ -19,32 +19,27 @@
#include <grub/symbol.h>
#define DS(x) ((x) - segstart)
#define DS(x) ((x) - LOCAL (segstart))
segstart:
LOCAL (segstart):
VARIABLE(grub_machine_mmaphook_start)
.code16
VARIABLE(grub_machine_mmaphook_int12)
push %ds
push %cs
pop %ds
#ifdef APPLE_CC
grub_machine_mmaphook_kblow_rel = DS (EXT_C (grub_machine_mmaphook_kblow))
movw (grub_machine_mmaphook_kblow_rel), %ax
#else
movw DS (EXT_C (grub_machine_mmaphook_kblow)), %ax
#endif
movw DS (LOCAL (kblow)), %ax
pop %ds
iret
VARIABLE(grub_machine_mmaphook_int15)
pushf
cmpw $0xe801, %ax
jz e801
jz LOCAL (e801)
cmpw $0xe820, %ax
jz e820
jz LOCAL (e820)
cmpb $0x88, %ah
jz h88
jz LOCAL (h88)
popf
/* ljmp */
.byte 0xea
@ -53,67 +48,44 @@ VARIABLE (grub_machine_mmaphook_int15offset)
VARIABLE (grub_machine_mmaphook_int15segment)
.word 0
e801:
LOCAL (e801):
popf
push %ds
push %cs
pop %ds
#ifdef APPLE_CC
grub_machine_mmaphook_kbin16mb_rel = DS (EXT_C (grub_machine_mmaphook_kbin16mb))
grub_machine_mmaphook_64kbin4gb_rel = DS (EXT_C (grub_machine_mmaphook_64kbin4gb))
movw (grub_machine_mmaphook_kbin16mb_rel), %ax
movw (grub_machine_mmaphook_64kbin4gb_rel), %bx
#else
movw DS (EXT_C (grub_machine_mmaphook_kbin16mb)), %ax
movw DS (EXT_C (grub_machine_mmaphook_64kbin4gb)), %bx
#endif
movw DS (LOCAL (kbin16mb)), %ax
movw DS (LOCAL (m64kbin4gb)), %bx
movw %ax, %cx
movw %bx, %dx
pop %ds
clc
iret
h88:
LOCAL (h88):
popf
push %ds
push %cs
pop %ds
#ifdef APPLE_CC
movw (grub_machine_mmaphook_kbin16mb_rel), %ax
#else
movw DS (EXT_C (grub_machine_mmaphook_kbin16mb)), %ax
#endif
movw DS (LOCAL (kbin16mb)), %ax
pop %ds
clc
iret
e820:
#ifdef APPLE_CC
mmaphook_mmap_rel = DS(mmaphook_mmap)
mmaphook_mmap_num_rel = DS(EXT_C(grub_machine_mmaphook_mmap_num))
#endif
LOCAL (e820):
popf
push %ds
push %cs
pop %ds
cmpw $20, %cx
jb errexit
#ifdef APPLE_CC
cmpw (mmaphook_mmap_num_rel), %bx
#else
cmpw DS (EXT_C (grub_machine_mmaphook_mmap_num)), %bx
#endif
jae errexit
jb LOCAL (errexit)
cmpw DS (LOCAL (mmap_num)), %bx
jae LOCAL (errexit)
cmp $0x534d4150, %edx
jne errexit
jne LOCAL (errexit)
push %si
push %di
movw $20, %cx
#ifdef APPLE_CC
movl $(mmaphook_mmap_rel), %esi
#else
movw $(DS(mmaphook_mmap)), %si
#endif
movw $(DS(LOCAL (mmaphook_mmap))), %si
mov %bx, %ax
imul $20, %ax
add %ax, %si
@ -122,19 +94,15 @@ e820:
pop %si
movl $20, %ecx
inc %bx
#ifdef APPLE_CC
cmpw (mmaphook_mmap_num_rel), %bx
#else
cmpw DS(EXT_C(grub_machine_mmaphook_mmap_num)), %bx
#endif
jb noclean
cmpw DS(LOCAL (mmap_num)), %bx
jb LOCAL (noclean)
xor %bx, %bx
noclean:
LOCAL (noclean):
mov $0x534d4150, %eax
pop %ds
clc
iret
errexit:
LOCAL (errexit):
mov $0x534d4150, %eax
pop %ds
stc
@ -142,13 +110,18 @@ errexit:
iret
VARIABLE(grub_machine_mmaphook_mmap_num)
LOCAL (mmap_num):
.word 0
VARIABLE(grub_machine_mmaphook_kblow)
LOCAL (kblow):
.word 0
VARIABLE (grub_machine_mmaphook_kbin16mb)
LOCAL (kbin16mb):
.word 0
VARIABLE (grub_machine_mmaphook_64kbin4gb)
LOCAL (m64kbin4gb):
.word 0
mmaphook_mmap:
LOCAL (mmaphook_mmap):
/* Memory map is placed just after the interrupt handlers. */
VARIABLE(grub_machine_mmaphook_end)
.byte 0