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https://github.com/brain-hackers/u-boot-brain
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x86: use data32 directive instead of macro for operand-size prefix
This file defines 'a32' and 'o32' macros to avoid magic numbers of operand/address-size prefixing. GAS supports 'data32' and 'addr32' for that purpose. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
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@ -13,8 +13,6 @@
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#include <asm/processor-flags.h>
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#define BOOT_SEG 0xffff0000 /* linear segment of boot code */
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#define a32 .byte 0x67;
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#define o32 .byte 0x66;
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.section .start16, "ax"
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.code16
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@ -33,8 +31,8 @@ start16:
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wbinvd
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/* load the temporary Global Descriptor Table */
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o32 cs lidt idt_ptr
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o32 cs lgdt gdt_ptr
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data32 cs lidt idt_ptr
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data32 cs lgdt gdt_ptr
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/* Now, we enter protected mode */
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movl %cr0, %eax
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@ -49,7 +47,7 @@ ff:
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movw $code32start, %ax
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movw %ax, %bp
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movl %ecx, %eax
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o32 cs ljmp *(%bp)
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data32 cs ljmp *(%bp)
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/* 48-bit far pointer */
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code32start:
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