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authorSylvain Gault <sylvain.gault@gmail.com>2015-09-29 04:45:09 +0200
committerPaulo Alcantara <pcacjr@zytor.com>2015-11-08 15:48:26 -0200
commit0cc9a99e560a2f52bcf052fd85b1efae35ee812f (patch)
treeadf4bd2efa466219733dc6f47cf0d0dcaf0ed782 /core
parente5f2b577ded109291c9632dacb6eaa621d8a59fe (diff)
downloadsyslinux-0cc9a99e560a2f52bcf052fd85b1efae35ee812f.tar.gz
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bios: Don't try to guess the sections alignment
For the compression / decompression to succeed, the sections layout must be the same between the virtual memory and load memory. The section alignment was kept in sync by introducing aligment that should be greater or equal to the actual section alignment. This patch compute the load memory addresses of the sections so that the layout is the same as the virtual memory addresses. Signed-off-by: Sylvain Gault <sylvain.gault@gmail.com> Tested-by: poma <pomidorabelisima@gmail.com> Signed-off-by: Paulo Alcantara <pcacjr@zytor.com>
Diffstat (limited to 'core')
-rw-r--r--core/i386/syslinux.ld63
-rw-r--r--core/x86_64/syslinux.ld63
2 files changed, 24 insertions, 102 deletions
diff --git a/core/i386/syslinux.ld b/core/i386/syslinux.ld
index 73904510..92b75b11 100644
--- a/core/i386/syslinux.ld
+++ b/core/i386/syslinux.ld
@@ -255,10 +255,9 @@ SECTIONS
. = 0x100000;
__pm_code_start = .;
+ __vma_to_lma = __pm_code_lma - __pm_code_start;
- __text_vma = .;
- __text_lma = __pm_code_lma;
- .text : AT(__text_lma) {
+ .text : AT(ADDR(.text) + __vma_to_lma) {
FILL(0x90909090)
__text_start = .;
*(.text)
@@ -266,106 +265,68 @@ SECTIONS
__text_end = .;
}
- . = ALIGN(32);
-
- __rodata_vma = .;
- __rodata_lma = __rodata_vma + __text_lma - __text_vma;
- .rodata : AT(__rodata_lma) {
+ .rodata : AT(ADDR(.rodata) + __vma_to_lma) {
__rodata_start = .;
*(.rodata)
*(.rodata.*)
__rodata_end = .;
}
- . = ALIGN(4);
-
- __ctors_vma = .;
- __ctors_lma = __ctors_vma + __text_lma - __text_vma;
- .ctors : AT(__ctors_lma) {
+ .ctors : AT(ADDR(.ctors) + __vma_to_lma) {
__ctors_start = .;
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
__ctors_end = .;
}
- __dtors_vma = .;
- __dtors_lma = __dtors_vma + __text_lma - __text_vma;
- .dtors : AT(__dtors_lma) {
+ .dtors : AT(ADDR(.dtors) + __vma_to_lma) {
__dtors_start = .;
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
__dtors_end = .;
}
- . = ALIGN(4);
-
- __dynsym_vma = .;
- __dynsym_lma = __dynsym_vma + __text_lma - __text_vma;
- .dynsym : AT(__dynsym_lma) {
+ .dynsym : AT(ADDR(.dynsym) + __vma_to_lma) {
__dynsym_start = .;
*(.dynsym)
__dynsym_end = .;
}
__dynsym_len = __dynsym_end - __dynsym_start;
- . = ALIGN(4);
-
- __dynstr_vma = .;
- __dynstr_lma = __dynstr_vma + __text_lma - __text_vma;
- .dynstr : AT(__dynstr_lma) {
+ .dynstr : AT(ADDR(.dynstr) + __vma_to_lma) {
__dynstr_start = .;
*(.dynstr)
__dynstr_end = .;
}
__dynstr_len = __dynstr_end - __dynstr_start;
- . = ALIGN(4);
-
- __gnu_hash_vma = .;
- __gnu_hash_lma = __gnu_hash_vma + __text_lma - __text_vma;
- .gnu.hash : AT(__gnu_hash_lma) {
+ .gnu.hash : AT(ADDR(.gnu.hash) + __vma_to_lma) {
__gnu_hash_start = .;
*(.gnu.hash)
__gnu_hash_end = .;
}
- . = ALIGN(4);
-
- __dynlink_vma = .;
- __dynlink_lma = __dynlink_vma + __text_lma - __text_vma;
- .dynlink : AT(__dynlink_lma) {
+ .dynlink : AT(ADDR(.dynlink) + __vma_to_lma) {
__dynlink_start = .;
*(.dynlink)
__dynlink_end = .;
}
- . = ALIGN(4);
-
- __got_vma = .;
- __got_lma = __got_vma + __text_lma - __text_vma;
- .got : AT(__got_lma) {
+ .got : AT(ADDR(.got) + __vma_to_lma) {
__got_start = .;
KEEP (*(.got.plt))
KEEP (*(.got))
__got_end = .;
}
- . = ALIGN(4);
-
- __dynamic_vma = .;
- __dynamic_lma = __dynamic_vma + __text_lma - __text_vma;
- .dynamic : AT(__dynamic_lma) {
+ .dynamic : AT(ADDR(.dynamic) + __vma_to_lma) {
__dynamic_start = .;
*(.dynamic)
__dynamic_end = .;
}
- . = ALIGN(32);
-
- __data_vma = .;
- __data_lma = __data_vma + __text_lma - __text_vma;
- .data : AT(__data_lma) {
+ .data : AT(ADDR(.data) + __vma_to_lma) {
__data_start = .;
*(.data)
*(.data.*)
diff --git a/core/x86_64/syslinux.ld b/core/x86_64/syslinux.ld
index bf815c46..70c6e00a 100644
--- a/core/x86_64/syslinux.ld
+++ b/core/x86_64/syslinux.ld
@@ -255,10 +255,9 @@ SECTIONS
. = 0x100000;
__pm_code_start = .;
+ __vma_to_lma = __pm_code_lma - __pm_code_start;
- __text_vma = .;
- __text_lma = __pm_code_lma;
- .text : AT(__text_lma) {
+ .text : AT(ADDR(.text) + __vma_to_lma) {
FILL(0x90909090)
__text_start = .;
*(.text)
@@ -266,106 +265,68 @@ SECTIONS
__text_end = .;
}
- . = ALIGN(32);
-
- __rodata_vma = .;
- __rodata_lma = __rodata_vma + __text_lma - __text_vma;
- .rodata : AT(__rodata_lma) {
+ .rodata : AT(ADDR(.rodata) + __vma_to_lma) {
__rodata_start = .;
*(.rodata)
*(.rodata.*)
__rodata_end = .;
}
- . = ALIGN(4);
-
- __ctors_vma = .;
- __ctors_lma = __ctors_vma + __text_lma - __text_vma;
- .ctors : AT(__ctors_lma) {
+ .ctors : AT(ADDR(.ctors) + __vma_to_lma) {
__ctors_start = .;
KEEP (*(SORT(.ctors.*)))
KEEP (*(.ctors))
__ctors_end = .;
}
- __dtors_vma = .;
- __dtors_lma = __dtors_vma + __text_lma - __text_vma;
- .dtors : AT(__dtors_lma) {
+ .dtors : AT(ADDR(.dtors) + __vma_to_lma) {
__dtors_start = .;
KEEP (*(SORT(.dtors.*)))
KEEP (*(.dtors))
__dtors_end = .;
}
- . = ALIGN(4);
-
- __dynsym_vma = .;
- __dynsym_lma = __dynsym_vma + __text_lma - __text_vma;
- .dynsym : AT(__dynsym_lma) {
+ .dynsym : AT(ADDR(.dynsym) + __vma_to_lma) {
__dynsym_start = .;
*(.dynsym)
__dynsym_end = .;
}
__dynsym_len = __dynsym_end - __dynsym_start;
- . = ALIGN(4);
-
- __dynstr_vma = .;
- __dynstr_lma = __dynstr_vma + __text_lma - __text_vma;
- .dynstr : AT(__dynstr_lma) {
+ .dynstr : AT(ADDR(.dynstr) + __vma_to_lma) {
__dynstr_start = .;
*(.dynstr)
__dynstr_end = .;
}
__dynstr_len = __dynstr_end - __dynstr_start;
- . = ALIGN(4);
-
- __gnu_hash_vma = .;
- __gnu_hash_lma = __gnu_hash_vma + __text_lma - __text_vma;
- .gnu.hash : AT(__gnu_hash_lma) {
+ .gnu.hash : AT(ADDR(.gnu.hash) + __vma_to_lma) {
__gnu_hash_start = .;
*(.gnu.hash)
__gnu_hash_end = .;
}
- . = ALIGN(4);
-
- __dynlink_vma = .;
- __dynlink_lma = __dynlink_vma + __text_lma - __text_vma;
- .dynlink : AT(__dynlink_lma) {
+ .dynlink : AT(ADDR(.dynlink) + __vma_to_lma) {
__dynlink_start = .;
*(.dynlink)
__dynlink_end = .;
}
- . = ALIGN(4);
-
- __got_vma = .;
- __got_lma = __got_vma + __text_lma - __text_vma;
- .got : AT(__got_lma) {
+ .got : AT(ADDR(.got) + __vma_to_lma) {
__got_start = .;
KEEP (*(.got.plt))
KEEP (*(.got))
__got_end = .;
}
- . = ALIGN(4);
-
- __dynamic_vma = .;
- __dynamic_lma = __dynamic_vma + __text_lma - __text_vma;
- .dynamic : AT(__dynamic_lma) {
+ .dynamic : AT(ADDR(.dynamic) + __vma_to_lma) {
__dynamic_start = .;
*(.dynamic)
__dynamic_end = .;
}
- . = ALIGN(32);
-
- __data_vma = .;
- __data_lma = __data_vma + __text_lma - __text_vma;
- .data : AT(__data_lma) {
+ .data : AT(ADDR(.data) + __vma_to_lma) {
__data_start = .;
*(.data)
*(.data.*)