diff options
Diffstat (limited to 'util/mkelfImage/linux-i386/head.S')
| -rw-r--r-- | util/mkelfImage/linux-i386/head.S | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/util/mkelfImage/linux-i386/head.S b/util/mkelfImage/linux-i386/head.S index b35c62a983..9c52896e0c 100644 --- a/util/mkelfImage/linux-i386/head.S +++ b/util/mkelfImage/linux-i386/head.S @@ -8,7 +8,7 @@ * * Other parts were taken from etherboot-5.0.5 */ - + #define ASSEMBLY 1 #define RELOC 0x10000 @@ -37,7 +37,7 @@ startup_32: jz 1f movl 4(%esp), %eax movl %eax, boot_param -1: +1: movl stack_start, %esp @@ -63,7 +63,7 @@ startup_32: # Linux makes stupid assumptions about the segments # that are already setup, so setup a new gdt & ldt # and then reload the segment registers. - + lgdt gdt_48 lidt idt_48 @@ -80,17 +80,17 @@ startup_32: pushl boot_data # boot data pointer as second arg pushl boot_type # boot data type as first argument call convert_params - + movl %eax, %esi # put the real mode pointer in a safe place addl $16, %esp # pop the arguments - + # Setup the registers before jumping to linux # clear eflags pushl $0 - popfl + popfl # Flag to indicate we are the bootstrap processor xorl %ebx, %ebx @@ -231,7 +231,7 @@ jmpe820: cmpl $SMAP, %eax jne bail820 -good820: +good820: /* If this is useable memory, we save it by simply advancing %di by * sizeof(e820rec) */ @@ -250,7 +250,7 @@ bail820: popl %eax subl %esi, %eax /* Compute how many structure we read */ - /* Restore everything else */ + /* Restore everything else */ popl %edi popl %esi popl %ebx @@ -260,7 +260,7 @@ bail820: /************************************************************************** -MEME801 - Determine size of extended memory +MEME801 - Determine size of extended memory **************************************************************************/ .globl meme801 meme801: @@ -270,12 +270,12 @@ meme801: call _prot_to_real .code16 - stc # fix to work around buggy - xorw %cx,%cx # BIOSes which dont clear/set - xorw %dx,%dx # carry on pass/error of - # e801h memory size call - # or merely pass cx,dx though - # without changing them. + stc # fix to work around buggy + xorw %cx,%cx # BIOSes which dont clear/set + xorw %dx,%dx # carry on pass/error of + # e801h memory size call + # or merely pass cx,dx though + # without changing them. movw $0xe801,%ax int $0x15 jc e801absent @@ -284,7 +284,7 @@ meme801: jne e801usecxdx # which report their extended cmpw $0x0, %dx # memory in AX/BX rather than jne e801usecxdx # CX/DX. The spec I have read - movw %ax, %cx # seems to indicate AX/BX + movw %ax, %cx # seems to indicate AX/BX movw %bx, %dx # are more reasonable anyway... e801usecxdx: @@ -298,7 +298,7 @@ e801usecxdx: e801absent: xorl %eax,%eax -e801out: +e801out: data32 call _real_to_prot .code32 /* Restore Everything */ @@ -308,7 +308,7 @@ e801out: ret /************************************************************************** -MEM88 - Determine size of extended memory +MEM88 - Determine size of extended memory **************************************************************************/ .globl mem88 mem88: @@ -330,7 +330,7 @@ mem88: popl %esi popl %ebx ret - + /************************************************************************** BASEMEMSIZE - Get size of the conventional (base) memory @@ -375,7 +375,7 @@ _real_to_prot: popl %eax /* Fix up return address */ addl $RELOC,%eax pushl %eax - + /* switch to protected mode idt */ cs lidt idt_48 @@ -469,7 +469,7 @@ gdt: .byte (RELOC>>16),0x93,0x00,(RELOC>>24) /* For 2.5.x the kernel segments have moved */ - + /* 0x28 dummy */ .quad 0 @@ -485,7 +485,7 @@ gdt: .quad 0 /* 0x58 dummy */ .quad 0 - + /* 0x60 */ .word 0xFFFF # 4Gb - (0x100000*0x1000 = 4Gb) @@ -534,7 +534,7 @@ gdt: * 20 - PNPBIOS support * 21 - APM BIOS support * 22 - APM BIOS support - * 23 - APM BIOS support + * 23 - APM BIOS support */ gdt_end: @@ -546,7 +546,7 @@ gdt64: .quad 0x00af9a000000ffff /* __KERNEL_CS */ .quad 0x00cf92000000ffff /* __KERNEL_DS */ gdt64_end: - + .section ".trailer", "a" /* Constants set at build time, these are at the very end of my image */ .balign 16 |