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[i386] Simplify linker script and standardise linker-defined symbol names

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Reduce the number of sections within the linker script to match the
number of practical sections within the output file.

Define _section, _msection, _esection, _section_filesz, _section_memsz,
and _section_lma for each section, replacing the mixture of symbols that
previously existed.

In particular, replace _text and _end with _textdata and _etextdata, to
make it explicit within code that uses these symbols that the .text and
.data sections are always treated as a single contiguous block.
This commit is contained in:
Michael Brown
2008-10-09 22:22:01 +01:00
parent 3029eb0e84
commit 13d09e6719
11 changed files with 153 additions and 236 deletions
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14
src/arch/i386/prefix/romprefix.S
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@@ -30,7 +30,7 @@
.org 0x00
romheader:
.word 0xAA55 /* BIOS extension signature */
romheader_size: .byte _load_size_sect /* Size in 512-byte blocks */
romheader_size: .byte _filesz_sect /* Size in 512-byte blocks */
jmp init /* Initialisation vector */
checksum:
.byte 0
@@ -58,12 +58,12 @@ pciheader:
.byte 0x03 /* PCI data structure revision */
.byte 0x02, 0x00, 0x00 /* Class code */
pciheader_image_length:
.word _load_size_sect /* Image length */
.word _filesz_sect /* Image length */
.word 0x0001 /* Revision level */
.byte 0x00 /* Code type */
.byte 0x80 /* Last image indicator */
pciheader_runtime_length:
.word _load_size_sect /* Maximum run-time image length */
.word _filesz_sect /* Maximum run-time image length */
.word 0x0000 /* Configuration utility code header */
.word 0x0000 /* DMTF CLP entry point */
.equ pciheader_len, . - pciheader
@@ -130,9 +130,9 @@ undiheader:
.byte 0 /* Structure revision */
.byte 0,1,2 /* PXE version: 2.1.0 */
.word undiloader /* Offset to loader routine */
.word _data16_size /* Stack segment size */
.word _data16_size /* Data segment size */
.word _text16_size /* Code segment size */
.word _data16_memsz /* Stack segment size */
.word _data16_memsz /* Data segment size */
.word _text16_memsz /* Code segment size */
.ascii "PCIR" /* Bus type */
.equ undiheader_len, . - undiheader
.size undiheader, . - undiheader
@@ -294,7 +294,7 @@ pmm_scan:
/* Shrink ROM and update checksum */
xorw %bx, %bx
xorw %si, %si
movw $_prefix_size_sect, %cx
movw $_prefix_memsz_sect, %cx
movb %cl, romheader_size
shlw $9, %cx
1: lodsb