287 lines
6.6 KiB
Diff
287 lines
6.6 KiB
Diff
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From: Sylvain Gault <sylvain.gault at gmail.com>
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For the compression / decompression to succeed, the sections layout must
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be the same between the virtual memory and load memory. The section
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alignment was kept in sync by introducing aligment that should be
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greater or equal to the actual section alignment.
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This patch compute the load memory addresses of the sections so that
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the layout is the same as the virtual memory addresses.
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Signed-off-by: Sylvain Gault <sylvain.gault at gmail.com>
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---
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core/i386/syslinux.ld | 63 ++++++++++---------------------------------------
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core/x86_64/syslinux.ld | 63 ++++++++++---------------------------------------
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2 files changed, 24 insertions(+), 102 deletions(-)
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diff --git a/core/i386/syslinux.ld b/core/i386/syslinux.ld
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index 7390451..92b75b1 100644
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--- a/core/i386/syslinux.ld
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+++ b/core/i386/syslinux.ld
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@@ -255,10 +255,9 @@ SECTIONS
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. = 0x100000;
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__pm_code_start = .;
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+ __vma_to_lma = __pm_code_lma - __pm_code_start;
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- __text_vma = .;
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- __text_lma = __pm_code_lma;
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- .text : AT(__text_lma) {
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+ .text : AT(ADDR(.text) + __vma_to_lma) {
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FILL(0x90909090)
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__text_start = .;
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*(.text)
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@@ -266,106 +265,68 @@ SECTIONS
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__text_end = .;
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}
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- . = ALIGN(32);
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-
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- __rodata_vma = .;
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- __rodata_lma = __rodata_vma + __text_lma - __text_vma;
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- .rodata : AT(__rodata_lma) {
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+ .rodata : AT(ADDR(.rodata) + __vma_to_lma) {
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__rodata_start = .;
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*(.rodata)
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*(.rodata.*)
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__rodata_end = .;
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}
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- . = ALIGN(4);
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-
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- __ctors_vma = .;
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- __ctors_lma = __ctors_vma + __text_lma - __text_vma;
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- .ctors : AT(__ctors_lma) {
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+ .ctors : AT(ADDR(.ctors) + __vma_to_lma) {
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__ctors_start = .;
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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__ctors_end = .;
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}
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- __dtors_vma = .;
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- __dtors_lma = __dtors_vma + __text_lma - __text_vma;
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- .dtors : AT(__dtors_lma) {
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+ .dtors : AT(ADDR(.dtors) + __vma_to_lma) {
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__dtors_start = .;
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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__dtors_end = .;
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}
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- . = ALIGN(4);
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-
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- __dynsym_vma = .;
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- __dynsym_lma = __dynsym_vma + __text_lma - __text_vma;
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- .dynsym : AT(__dynsym_lma) {
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+ .dynsym : AT(ADDR(.dynsym) + __vma_to_lma) {
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__dynsym_start = .;
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*(.dynsym)
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__dynsym_end = .;
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}
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__dynsym_len = __dynsym_end - __dynsym_start;
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- . = ALIGN(4);
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-
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- __dynstr_vma = .;
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- __dynstr_lma = __dynstr_vma + __text_lma - __text_vma;
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- .dynstr : AT(__dynstr_lma) {
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+ .dynstr : AT(ADDR(.dynstr) + __vma_to_lma) {
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__dynstr_start = .;
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*(.dynstr)
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__dynstr_end = .;
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}
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__dynstr_len = __dynstr_end - __dynstr_start;
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- . = ALIGN(4);
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-
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- __gnu_hash_vma = .;
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- __gnu_hash_lma = __gnu_hash_vma + __text_lma - __text_vma;
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- .gnu.hash : AT(__gnu_hash_lma) {
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+ .gnu.hash : AT(ADDR(.gnu.hash) + __vma_to_lma) {
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__gnu_hash_start = .;
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*(.gnu.hash)
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__gnu_hash_end = .;
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}
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- . = ALIGN(4);
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-
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- __dynlink_vma = .;
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- __dynlink_lma = __dynlink_vma + __text_lma - __text_vma;
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- .dynlink : AT(__dynlink_lma) {
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+ .dynlink : AT(ADDR(.dynlink) + __vma_to_lma) {
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__dynlink_start = .;
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*(.dynlink)
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__dynlink_end = .;
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}
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- . = ALIGN(4);
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-
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- __got_vma = .;
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- __got_lma = __got_vma + __text_lma - __text_vma;
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- .got : AT(__got_lma) {
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+ .got : AT(ADDR(.got) + __vma_to_lma) {
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__got_start = .;
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KEEP (*(.got.plt))
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KEEP (*(.got))
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__got_end = .;
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}
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- . = ALIGN(4);
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-
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- __dynamic_vma = .;
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- __dynamic_lma = __dynamic_vma + __text_lma - __text_vma;
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- .dynamic : AT(__dynamic_lma) {
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+ .dynamic : AT(ADDR(.dynamic) + __vma_to_lma) {
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__dynamic_start = .;
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*(.dynamic)
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__dynamic_end = .;
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}
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- . = ALIGN(32);
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-
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- __data_vma = .;
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- __data_lma = __data_vma + __text_lma - __text_vma;
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- .data : AT(__data_lma) {
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+ .data : AT(ADDR(.data) + __vma_to_lma) {
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__data_start = .;
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*(.data)
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*(.data.*)
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diff --git a/core/x86_64/syslinux.ld b/core/x86_64/syslinux.ld
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index bf815c4..70c6e00 100644
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--- a/core/x86_64/syslinux.ld
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+++ b/core/x86_64/syslinux.ld
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@@ -255,10 +255,9 @@ SECTIONS
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. = 0x100000;
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__pm_code_start = .;
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+ __vma_to_lma = __pm_code_lma - __pm_code_start;
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- __text_vma = .;
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- __text_lma = __pm_code_lma;
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- .text : AT(__text_lma) {
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+ .text : AT(ADDR(.text) + __vma_to_lma) {
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FILL(0x90909090)
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__text_start = .;
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*(.text)
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@@ -266,106 +265,68 @@ SECTIONS
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__text_end = .;
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}
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- . = ALIGN(32);
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-
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- __rodata_vma = .;
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- __rodata_lma = __rodata_vma + __text_lma - __text_vma;
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- .rodata : AT(__rodata_lma) {
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+ .rodata : AT(ADDR(.rodata) + __vma_to_lma) {
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__rodata_start = .;
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*(.rodata)
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*(.rodata.*)
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__rodata_end = .;
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}
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- . = ALIGN(4);
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-
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- __ctors_vma = .;
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- __ctors_lma = __ctors_vma + __text_lma - __text_vma;
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- .ctors : AT(__ctors_lma) {
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+ .ctors : AT(ADDR(.ctors) + __vma_to_lma) {
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__ctors_start = .;
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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__ctors_end = .;
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}
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- __dtors_vma = .;
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- __dtors_lma = __dtors_vma + __text_lma - __text_vma;
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- .dtors : AT(__dtors_lma) {
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+ .dtors : AT(ADDR(.dtors) + __vma_to_lma) {
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__dtors_start = .;
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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__dtors_end = .;
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}
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- . = ALIGN(4);
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-
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- __dynsym_vma = .;
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- __dynsym_lma = __dynsym_vma + __text_lma - __text_vma;
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- .dynsym : AT(__dynsym_lma) {
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+ .dynsym : AT(ADDR(.dynsym) + __vma_to_lma) {
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__dynsym_start = .;
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*(.dynsym)
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__dynsym_end = .;
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}
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__dynsym_len = __dynsym_end - __dynsym_start;
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- . = ALIGN(4);
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-
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- __dynstr_vma = .;
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- __dynstr_lma = __dynstr_vma + __text_lma - __text_vma;
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- .dynstr : AT(__dynstr_lma) {
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+ .dynstr : AT(ADDR(.dynstr) + __vma_to_lma) {
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__dynstr_start = .;
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*(.dynstr)
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__dynstr_end = .;
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}
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__dynstr_len = __dynstr_end - __dynstr_start;
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- . = ALIGN(4);
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-
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- __gnu_hash_vma = .;
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- __gnu_hash_lma = __gnu_hash_vma + __text_lma - __text_vma;
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- .gnu.hash : AT(__gnu_hash_lma) {
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+ .gnu.hash : AT(ADDR(.gnu.hash) + __vma_to_lma) {
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__gnu_hash_start = .;
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*(.gnu.hash)
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__gnu_hash_end = .;
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}
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- . = ALIGN(4);
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-
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- __dynlink_vma = .;
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- __dynlink_lma = __dynlink_vma + __text_lma - __text_vma;
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- .dynlink : AT(__dynlink_lma) {
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+ .dynlink : AT(ADDR(.dynlink) + __vma_to_lma) {
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__dynlink_start = .;
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*(.dynlink)
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__dynlink_end = .;
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}
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- . = ALIGN(4);
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-
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- __got_vma = .;
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- __got_lma = __got_vma + __text_lma - __text_vma;
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- .got : AT(__got_lma) {
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+ .got : AT(ADDR(.got) + __vma_to_lma) {
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__got_start = .;
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KEEP (*(.got.plt))
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KEEP (*(.got))
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__got_end = .;
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}
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- . = ALIGN(4);
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-
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- __dynamic_vma = .;
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- __dynamic_lma = __dynamic_vma + __text_lma - __text_vma;
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- .dynamic : AT(__dynamic_lma) {
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+ .dynamic : AT(ADDR(.dynamic) + __vma_to_lma) {
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__dynamic_start = .;
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*(.dynamic)
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__dynamic_end = .;
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}
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- . = ALIGN(32);
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-
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- __data_vma = .;
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- __data_lma = __data_vma + __text_lma - __text_vma;
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- .data : AT(__data_lma) {
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+ .data : AT(ADDR(.data) + __vma_to_lma) {
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__data_start = .;
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*(.data)
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*(.data.*)
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--
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2.5.3
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