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MIPS: optimize and fix ELF sections

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Discard ABI related sections which are not required for debugging.
Rearrange debug sections similar to Linux. Remove the remaining
explicitely specified sections in the unused part because those
sections are not created anymore or because the linker puts them
by default at the end of the ELF binary.

Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Tested-by: Ezequiel Garcia <ezequiel@collabora.com>
This commit is contained in:
Daniel Schwierzeck 2019-01-06 20:42:43 +01:00
parent 4deb09632d
commit 2fdadc0f82
2 changed files with 128 additions and 60 deletions
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96
arch/mips/cpu/u-boot-spl.lds
View file

@ -46,43 +46,75 @@ SECTIONS
__bss_end = .;
} > .bss_mem
.rel.dyn (NOLOAD) : {
*(.rel.dyn)
/* These mark the ABI of U-Boot for debuggers. */
.mdebug.abi32 : {
KEEP(*(.mdebug.abi32))
}
.mdebug.abi64 : {
KEEP(*(.mdebug.abi64))
}
.dynsym : {
*(.dynsym)
}
/* This is the MIPS specific mdebug section. */
.mdebug : { *(.mdebug) }
.dynbss : {
*(.dynbss)
}
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.dynstr : {
*(.dynstr)
/*
* DWARF debug sections.
* Symbols in the DWARF debugging sections are relative to
* the beginning of the section so we begin them at 0.
*/
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : {
*(.debug_info
.gnu.linkonce.wi.*)
}
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
.debug_pubtypes 0 : { *(.debug_pubtypes) }
/* DWARF 3 */
.debug_ranges 0 : { *(.debug_ranges) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/* GNU DWARF 2 extensions */
.debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) }
.debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) }
/* DWARF 4 */
.debug_types 0 : { *(.debug_types) }
/* DWARF 5 */
.debug_macro 0 : { *(.debug_macro) }
.debug_addr 0 : { *(.debug_addr) }
.dynamic : {
*(.dynamic)
}
.plt : {
*(.plt)
}
.interp : {
*(.interp)
}
.gnu : {
*(.gnu*)
}
.MIPS.stubs : {
*(.MIPS.stubs)
}
.hash : {
*(.hash)
/DISCARD/ : {
/* ABI crap starts here */
*(.MIPS.abiflags)
*(.MIPS.options)
*(.options)
*(.pdr)
*(.reginfo)
*(.eh_frame)
}
}

92
arch/mips/cpu/u-boot.lds
View file

@ -68,39 +68,75 @@ SECTIONS
__bss_end = .;
}
.dynsym _end : {
*(.dynsym)
/* These mark the ABI of U-Boot for debuggers. */
.mdebug.abi32 : {
KEEP(*(.mdebug.abi32))
}
.mdebug.abi64 : {
KEEP(*(.mdebug.abi64))
}
.dynbss : {
*(.dynbss)
}
/* This is the MIPS specific mdebug section. */
.mdebug : { *(.mdebug) }
.dynstr : {
*(.dynstr)
}
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.dynamic : {
*(.dynamic)
/*
* DWARF debug sections.
* Symbols in the DWARF debugging sections are relative to
* the beginning of the section so we begin them at 0.
*/
/* DWARF 1 */
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
/* GNU DWARF 1 extensions */
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
/* DWARF 1.1 and DWARF 2 */
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
/* DWARF 2 */
.debug_info 0 : {
*(.debug_info
.gnu.linkonce.wi.*)
}
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
.debug_pubtypes 0 : { *(.debug_pubtypes) }
/* DWARF 3 */
.debug_ranges 0 : { *(.debug_ranges) }
/* SGI/MIPS DWARF 2 extensions */
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/* GNU DWARF 2 extensions */
.debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) }
.debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) }
/* DWARF 4 */
.debug_types 0 : { *(.debug_types) }
/* DWARF 5 */
.debug_macro 0 : { *(.debug_macro) }
.debug_addr 0 : { *(.debug_addr) }
.plt : {
*(.plt)
}
.interp : {
*(.interp)
}
.gnu : {
*(.gnu*)
}
.MIPS.stubs : {
*(.MIPS.stubs)
}
.hash : {
*(.hash)
/DISCARD/ : {
/* ABI crap starts here */
*(.MIPS.abiflags)
*(.MIPS.options)
*(.options)
*(.pdr)
*(.reginfo)
*(.eh_frame)
}
}