To access an absolute address you need to do it through a label on Apple's cc
--
Regards
Vladimir 'phcoder' Serbinenko
diff --git a/boot/i386/pc/boot.S b/boot/i386/pc/boot.S
index fc31f5a..c22dccd 100644
--- a/boot/i386/pc/boot.S
+++ b/boot/i386/pc/boot.S
@@ -30,7 +30,11 @@
#define ABS(x) (x-_start+0x7c00)
/* Print message string */
+#ifdef APPLE_CC
+#define MSG(x) x ## _abs = ABS(x); movw $x ## _abs, %si; call message
+#else
#define MSG(x) movw $ABS(x), %si; call message
+#endif
.file "boot.S"
@@ -125,7 +129,12 @@ boot_drive_check:
* ljmp to the next instruction because some bogus BIOSes
* jump to 07C0:0000 instead of 0000:7C00.
*/
+#ifdef APPLE_CC
+ real_start_abs = ABS(real_start)
+ ljmp $0, $(real_start_abs)
+#else
ljmp $0, $ABS(real_start)
+#endif
real_start:
@@ -143,7 +152,12 @@ real_start:
* Check if we have a forced disk reference here
*/
/* assign root_drive at the same time */
- movw ABS(boot_drive), %ax
+#ifdef APPLE_CC
+ boot_drive_abs = ABS (boot_drive)
+ movw boot_drive_abs, %ax
+#else
+ movw ABS(boot_drive), %ax
+#endif
movb %ah, %dh
cmpb $0xff, %al
je 1f
@@ -156,7 +170,12 @@ real_start:
MSG(notification_string)
/* set %si to the disk address packet */
+#ifdef APPLE_CC
+ disk_address_packet_abs = ABS (disk_address_packet)
+ movw $disk_address_packet_abs, %si
+#else
movw $ABS(disk_address_packet), %si
+#endif
/* do not probe LBA if the drive is a floppy */
testb $GRUB_BOOT_MACHINE_BIOS_HD_FLAG, %dl
@@ -197,10 +216,18 @@ lba_mode:
movw $0x0010, (%si)
/* the absolute address */
+#ifdef APPLE_CC
+ kernel_sector_abs = ABS (kernel_sector)
+ movl (kernel_sector_abs), %ebx
+ movl %ebx, 8(%si)
+ movl (kernel_sector_abs + 4), %ebx
+ movl %ebx, 12(%si)
+#else
movl ABS(kernel_sector), %ebx
movl %ebx, 8(%si)
movl ABS(kernel_sector + 4), %ebx
movl %ebx, 12(%si)
+#endif
/* the segment of buffer address */
movw $GRUB_BOOT_MACHINE_BUFFER_SEG, 6(%si)
@@ -267,12 +294,22 @@ final_init:
setup_sectors:
/* load logical sector start (top half) */
+#ifdef APPLE_CC
+ kernel_sector_abs = ABS (kernel_sector)
+ movl (kernel_sector_abs + 4), %eax
+#else
movl ABS(kernel_sector + 4), %eax
+#endif
+
orl %eax, %eax
jnz geometry_error
/* load logical sector start (bottom half) */
+#ifdef APPLE_CC
+ movl (kernel_sector_abs), %eax
+#else
movl ABS(kernel_sector), %eax
+#endif
/* zero %edx */
xorl %edx, %edx
@@ -336,7 +373,12 @@ setup_sectors:
movw %es, %bx
copy_buffer:
+#ifdef APPLE_CC
+ kernel_segment_abs = ABS (kernel_segment)
+ movw (kernel_segment_abs), %es
+#else
movw ABS(kernel_segment), %es
+#endif
/*
* We need to save %cx and %si because the startup code in
@@ -360,7 +402,12 @@ copy_buffer:
popw %dx
/* boot kernel */
+#ifdef APPLE_CC
+ kernel_address_abs = ABS (kernel_address)
+ jmp *(kernel_address_abs)
+#else
jmp *(kernel_address)
+#endif
/* END OF MAIN LOOP */
@@ -446,7 +493,12 @@ floppy_probe:
* Perform floppy probe.
*/
+#ifdef APPLE_CC
+ probe_values_abs = ABS (probe_values)
+ movw $(probe_values_abs-1), %si
+#else
movw $ABS(probe_values-1), %si
+#endif
probe_loop:
/* reset floppy controller INT 13h AH=0 */
diff --git a/boot/i386/pc/cdboot.S b/boot/i386/pc/cdboot.S
index 133f8de..b32f82c 100644
--- a/boot/i386/pc/cdboot.S
+++ b/boot/i386/pc/cdboot.S
@@ -67,8 +67,15 @@ bi_reserved:
movw %ax, %ds
movw %ax, %es
+#ifdef APPLE_CC
+ err_noboot_msg_abs = 0x7C00 + err_noboot_msg - start
+ movw $err_noboot_msg_abs, %si
+ bi_length_dif = bi_length - next
+ movl %cs:bi_length_dif(%bx), %ecx
+#else
movw $(0x7C00 + err_noboot_msg - start), %si
movl %cs: bi_length - next(%bx), %ecx
+#endif
orl %ecx, %ecx
jz fail
@@ -152,7 +159,12 @@ read_cdrom:
ret
cdrom_fail:
+#ifdef APPLE_CC
+ err_cdfail_msg_abs = 0x7C00 + err_cdfail_msg - start
+ movw $(err_cdfail_msg_abs), %si
+#else
movw $(0x7C00 + err_cdfail_msg - start), %si
+#endif
fail:
movb $0x0e, %ah
diff --git a/boot/i386/pc/diskboot.S b/boot/i386/pc/diskboot.S
index 0c8e75d..f29ddaa 100644
--- a/boot/i386/pc/diskboot.S
+++ b/boot/i386/pc/diskboot.S
@@ -28,7 +28,11 @@
#define ABS(x) (x-_start+GRUB_BOOT_MACHINE_KERNEL_ADDR)
/* Print message string */
+#ifdef APPLE_CC
+#define MSG(x) x ## _abs = ABS(x); mov $x ## _abs, %esi; call message
+#else
#define MSG(x) movw $ABS(x), %si; call message
+#endif
.file "diskboot.S"
@@ -61,7 +65,12 @@ _start:
popw %si
/* this sets up for the first run through "bootloop" */
+#ifdef APPLE_CC
+ firstlist_off_abs = ABS (firstlist - GRUB_BOOT_MACHINE_LIST_SIZE)
+ movl $firstlist_off_abs, %edi
+#else
movw $ABS(firstlist - GRUB_BOOT_MACHINE_LIST_SIZE), %di
+#endif
/* save the sector number of the second sector in %ebp */
movl (%di), %ebp
diff --git a/boot/i386/pc/lnxboot.S b/boot/i386/pc/lnxboot.S
index e7f55df..0db6826 100644
--- a/boot/i386/pc/lnxboot.S
+++ b/boot/i386/pc/lnxboot.S
@@ -123,8 +123,15 @@ data_leng:
linux_init:
+#ifdef APPLE_CC
+ reg_edx_rel = reg_edx - start
+ code32_start_rel = code32_start - start
+ movw %cs:(reg_edx_rel), %dx
+ movl %cs:(code32_start_rel), %ebp
+#else
movw %cs:(reg_edx - start), %dx
movl %cs:(code32_start - start), %ebp
+#endif
linux_next:
@@ -132,12 +139,22 @@ linux_next:
normalize:
popw %bx
+#ifdef APPLE_CC
+ normalize_rel = normalize - start
+ subw $(normalize_rel), %bx
+#else
subw $(normalize - start), %bx
+#endif
shrw $4, %bx
movw %cs, %ax
addw %bx, %ax
pushw %ax
+#ifdef APPLE_CC
+ real_code_rel = real_code - start
+ pushw $(real_code_rel)
+#else
pushw $(real_code - start)
+#endif
lret /* Jump to real_code. */
real_code:
@@ -164,7 +181,12 @@ real_code:
rep
movsl
+#ifdef APPLE_CC
+ real_code_2_rel = real_code_2 - start
+ ljmp $(CODE_ADDR >> 4), $(real_code_2_rel)
+#else
ljmp $(CODE_ADDR >> 4), $(real_code_2 - start)
+#endif
real_code_2:
@@ -189,8 +211,15 @@ real_code_2:
cmpl $MULTIBOOT_MAGIC, %ss:(DATA_ADDR + GRUB_KERNEL_MACHINE_DATA_END)
jz 1f
+#ifdef APPLE_CC
+ ramdisk_image_rel = ramdisk_image - start
+ ramdisk_size_rel = ramdisk_size - start
+ movl (ramdisk_image_rel), %esi
+ movl (ramdisk_size_rel), %ecx
+#else
movl (ramdisk_image - start), %esi
movl (ramdisk_size - start), %ecx
+#endif
movl $(DATA_ADDR - 0x200), %edi
jmp 2f
@@ -205,7 +234,12 @@ real_code_2:
movsbl %dh, %eax
movl %eax, %ss:(DATA_ADDR + GRUB_KERNEL_MACHINE_INSTALL_DOS_PART)
+#ifdef APPLE_CC
+ reg_edx_rel = reg_edx - start
+ movsbl (reg_edx_rel + 2), %eax
+#else
movsbl (reg_edx + 2 - start), %eax
+#endif
movl %eax, %ss:(DATA_ADDR + GRUB_KERNEL_MACHINE_INSTALL_BSD_PART)
movb $0xFF, %dh
@@ -234,6 +268,28 @@ move_memory:
pushl %ecx
movl %esi, %eax
+#ifdef APPLE_CC
+ gdt_src1_rel = gdt_src1 - start
+ gdt_src2_rel = gdt_src2 - start
+ gdt_dst1_rel = gdt_dst1 - start
+ gdt_dst2_rel = gdt_dst2 - start
+ gdt_rel = gdt - start
+
+ movw %si, (gdt_src1_rel)
+ shrl $16, %eax
+ movb %al, (gdt_src1_rel + 2)
+ movb %ah, (gdt_src2_rel)
+
+ movl %edi, %eax
+ movw %di, (gdt_dst1_rel)
+ shrl $16, %eax
+ movb %al, (gdt_dst1_rel + 2)
+ movb %ah, (gdt_dst2_rel)
+
+ movw $(gdt_rel), %si
+ movb $0x87, %ah
+ shrw $1, %cx
+#else
movw %si, (gdt_src1 - start)
shrl $16, %eax
movb %al, (gdt_src1 + 2 - start)
@@ -248,6 +304,7 @@ move_memory:
movw $(gdt - start), %si
movb $0x87, %ah
shrw $1, %cx
+#endif
int $0x15
@@ -257,7 +314,12 @@ move_memory:
popl %esi
jnc 2f
+#ifdef APPLE_CC
+ err_int15_msg_rel = err_int15_msg - start
+ movw $(err_int15_msg_rel), %si
+#else
movw $(err_int15_msg - start), %si
+#endif
jmp fail
2:
diff --git a/commands/i386/pc/drivemap_int13h.S b/commands/i386/pc/drivemap_int13h.S
index 23b7302..7a3e8e7 100644
--- a/commands/i386/pc/drivemap_int13h.S
+++ b/commands/i386/pc/drivemap_int13h.S
@@ -30,7 +30,12 @@ FUNCTION(grub_drivemap_handler)
/* Map the drive number (always in DL). */
push %ax
push %bx
+#ifdef APPLE_CC
+ grub_drivemap_mapstart_ofs = INT13H_OFFSET(EXT_C(grub_drivemap_mapstart))
+ movw $grub_drivemap_mapstart_ofs, %bx
+#else
movw $INT13H_OFFSET(EXT_C(grub_drivemap_mapstart)), %bx
+#endif
more_remaining:
movw %cs:(%bx), %ax
diff --git a/kern/i386/pc/startup.S b/kern/i386/pc/startup.S
index fc83c4c..23f84ed 100644
--- a/kern/i386/pc/startup.S
+++ b/kern/i386/pc/startup.S
@@ -69,7 +69,12 @@ _start:
/*
* Guarantee that "main" is loaded at 0x0:0x8200.
*/
+#ifdef APPLE_CC
+ codestart_abs = ABS(codestart) - 0x10000
+ ljmp $0, $(codestart_abs)
+#else
ljmp $0, $ABS(codestart)
+#endif
/*
* Compatibility version number
@@ -249,12 +254,24 @@ codestart:
movsb
#endif
+#ifdef APPLE_CC
+ /* clean out the bss */
+ bss_start_abs = ABS (bss_start)
+ bss_end_abs = ABS (bss_end)
+
+ movl bss_start_abs, %edi
+
+ /* compute the bss length */
+ movl bss_end_abs, %ecx
+ subl %edi, %ecx
+#else
/* clean out the bss */
movl $BSS_START_SYMBOL, %edi
/* compute the bss length */
movl $END_SYMBOL, %ecx
subl %edi, %ecx
+#endif
/* clean out */
xorl %eax, %eax
@@ -293,7 +310,13 @@ real_to_prot:
cli
/* load the GDT register */
+#ifdef APPLE_CC
+ mov %cs, %ax
+ mov %ax, %ds
+ DATA32 ADDR32 lgdt gdtdesc
+#else
DATA32 ADDR32 lgdt %cs:gdtdesc
+#endif
/* turn on protected mode */
movl %cr0, %eax
@@ -1223,7 +1246,12 @@ translate_keycode:
pushw %bx
pushw %si
+#ifdef APPLE_CC
+ translation_table_abs = ABS (translation_table) - 0x10000
+ movw $(translation_table_abs), %si
+#else
movw $ABS(translation_table), %si
+#endif
1: lodsw
/* check if this is the end */
diff --git a/mmap/i386/pc/mmap_helper.S b/mmap/i386/pc/mmap_helper.S
index ab7c0d2..f153f1c 100644
--- a/mmap/i386/pc/mmap_helper.S
+++ b/mmap/i386/pc/mmap_helper.S
@@ -28,7 +28,12 @@ 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
pop %ds
iret
@@ -53,8 +58,15 @@ e801:
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 %ax, %cx
movw %bx, %dx
pop %ds
@@ -66,26 +78,42 @@ h88:
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
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
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
cmp $0x534d4150, %edx
jne errexit
push %si
push %di
movw $20, %cx
+#ifdef APPLE_CC
+ movl $(mmaphook_mmap_rel), %esi
+#else
movw $(DS(mmaphook_mmap)), %si
+#endif
mov %bx, %ax
imul $20, %ax
add %ax, %si
@@ -94,7 +122,11 @@ 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
xor %bx, %bx
noclean:
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