Mercurial > ecos
diff packages/hal/powerpc/arch/current/src/powerpc.ld @ 2597:f04f94b690fa
* src/powerpc.ld (SECTION_data): Do not define _GLOBAL_OFFSET_TABLE_
It is meant to be defined by the linker.
* src/powerpc.ld: Remove workaround from 2005-06-03 for LD bug,
since fixed.
Include .eh_frame_hdr in .eh_frame.
* src/powerpc.ld: Future-proof relocs sections.
* src/powerpc.ld: gcc_except_table subsections don't need to be
kept.
* src/powerpc.ld: gcc_except_table needs to be marked KEEP.
* src/powerpc.ld: Use CYGBLD_HAL_LINKER_GROUPED_LIBS from the common HAL
for GROUP() list now.
* src/powerpc.ld: Add relocs section. Break out .eh_frame section and
define correctly. Split .gnu.linkonce.* subsections correctly between
text/rodata/data/sdata/sbss/scommon etc.
| author | jlarmour |
|---|---|
| date | Tue, 11 Nov 2008 04:29:18 +0000 |
| parents | 6425a2421b16 |
| children | 74dbf4c3f2e1 |
line wrap: on
line diff
--- a/packages/hal/powerpc/arch/current/src/powerpc.ld +++ b/packages/hal/powerpc/arch/current/src/powerpc.ld @@ -9,6 +9,7 @@ // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. +// Copyright (C) 2004, 2005, 2008 eCosCentric Limited // // eCos is free software; you can redistribute it and/or modify it under // the terms of the GNU General Public License as published by the Free @@ -48,16 +49,15 @@ //####DESCRIPTIONEND#### // //========================================================================== + +#include <pkgconf/hal.h> + STARTUP(vectors.o) ENTRY(__exception_reset) #ifdef EXTRAS INPUT(extras.o) #endif -#if (__GNUC__ >= 3) -GROUP(libtarget.a libgcc.a libsupc++.a) -#else -GROUP(libtarget.a libgcc.a) -#endif +GROUP( CYGBLD_HAL_LINKER_GROUPED_LIBS ) #define ALIGN_LMA 8 #define FOLLOWING(_section_) AT ((LOADADDR (_section_) + SIZEOF (_section_) + ALIGN_LMA - 1) & ~ (ALIGN_LMA - 1)) @@ -67,6 +67,49 @@ GROUP(libtarget.a libgcc.a) #define SECTIONS_BEGIN +#define SECTION_RELOCS(_region_, _vma_, _lma_) \ + .rel.dyn : \ + { \ + *(.rel.init) \ + *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) \ + *(.rel.fini) \ + *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) \ + *(.rel.data.rel.ro*) \ + *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) \ + *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) \ + *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) \ + *(.rel.ctors) \ + *(.rel.dtors) \ + *(.rel.got) \ + *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) \ + *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) \ + *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) \ + *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) \ + *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) \ + } > _region_ \ + .rela.dyn : \ + { \ + *(.rela.init) \ + *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) \ + *(.rela.fini) \ + *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) \ + *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) \ + *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) \ + *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) \ + *(.rela.ctors) \ + *(.rela.dtors) \ + *(.rela.got) \ + *(.rela.got1) \ + *(.rela.got2) \ + *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) \ + *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) \ + *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) \ + *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) \ + *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) \ + } > _region_ \ + .rel.plt : { *(.rel.plt) } > _region_ \ + .rela.plt : { *(.rela.plt) } > _region_ + #define SECTION_vectors(_region_, _vma_, _lma_) \ .vectors _vma_ : _lma_ \ { FORCE_OUTPUT; KEEP(*(.vectors)) } \ @@ -75,7 +118,7 @@ GROUP(libtarget.a libgcc.a) #define SECTION_text(_region_, _vma_, _lma_) \ .text _vma_ : _lma_ \ { _stext = .; \ - *(.text*) *(.gnu.warning) *(.gnu.linkonce*) *(.init) } \ + *(.text*) *(.gnu.warning) *(.gnu.linkonce.t.*) *(.init) } \ > _region_ \ _etext = .; PROVIDE (etext = .); @@ -89,25 +132,43 @@ GROUP(libtarget.a libgcc.a) { FORCE_OUTPUT; *(.rodata1*) } \ > _region_ -#define SECTION_rodata(_region_, _vma_, _lma_) \ - .rodata _vma_ : _lma_ \ - { FORCE_OUTPUT; *(.rodata*) } \ - > _region_ +#define SECTION_rodata(_region_, _vma_, _lma_) \ + .rodata _vma_ : _lma_ \ + { FORCE_OUTPUT; *(.rodata*) *(.gnu.linkonce.r.*) \ + } > _region_ #define SECTION_fixup(_region_, _vma_, _lma_) \ .fixup _vma_ : _lma_ \ { __FIXUP_START__ = ABSOLUTE(.); *(.fixup) __FIXUP_END__ = ABSOLUTE(.);}\ > _region_ +/* We want to discard C++ exception frame data if we don't have the + * C++ support to use it. But we can't. With current binutils (2008-05-13) + * the linker goes very wrong if either of the contents of + * .gcc_except_table or .eh_frame are discarded. Yes I tried. + */ #define SECTION_gcc_except_table(_region_, _vma_, _lma_) \ - .gcc_except_table _vma_ : _lma_ \ - { __EXCEPT_START__ = ABSOLUTE(.); *(.gcc_except_table) \ - __EXCEPT_END__ = ABSOLUTE(.);} \ - > _region_ + .gcc_except_table _vma_ : _lma_ \ + { __EXCEPT_START__ = ABSOLUTE(.); \ + *(.gcc_except_table) \ + *(.gcc_except_table.*) \ + __EXCEPT_END__ = ABSOLUTE(.); \ + } > _region_ + +#define SECTION_eh_frame(_region_, _vma_, _lma_) \ + .eh_frame _vma_ : _lma_ \ + { \ + *(.eh_frame_hdr) \ + FORCE_OUTPUT; __EH_FRAME_BEGIN__ = .; \ + KEEP(*(.eh_frame)) \ + __FRAME_END__ = .; \ + . = . + 8; \ + } > _region_ = 0 #define SECTION_data(_region_, _vma_, _lma_) \ .data _vma_ : _lma_ \ { __ram_data_start = ABSOLUTE(.); *(.data*) \ + *(.gnu.linkonce.d.*) \ __GOT1_START__ = ABSOLUTE(.); *(.got1) __GOT1_END__ = ABSOLUTE(.); \ /* Put .ctors and .dtors next to the .got2 section, so that */ \ /* the pointers get relocated with -mrelocatable. */ \ @@ -120,14 +181,13 @@ GROUP(libtarget.a libgcc.a) . = ALIGN(4); \ *( .2ram.*) ; \ __GOT2_START__ = ABSOLUTE(.); *(.got2) __GOT2_END__ = ABSOLUTE(.); \ - __GOT_START = ABSOLUTE(.); _GLOBAL_OFFSET_TABLE_ = ABSOLUTE(. + 32768); \ + __GOT_START = ABSOLUTE(.); \ _SDA_BASE_ = ABSOLUTE(.); *(.got.plt) *(.got) \ __GOT_END__ = ABSOLUTE(.); *(.dynamic) \ - *(.eh_frame) \ /* We want the small data sections together, so single-instruction */ \ /* offsets can access them all, and initialized data all before */ \ /* uninitialized, so we can shorten the on-disk segment size. */ \ - __SDATA_START__ = ABSOLUTE(.); *(.sdata) *(.sdata.*) \ + __SDATA_START__ = ABSOLUTE(.); *(.sdata) *(.sdata.*) *(.gnu.linkonce.s.*) \ __SDATA2_START__ = ABSOLUTE(.); *(.sdata2*) } \ > _region_ \ __rom_data_start = LOADADDR(.data); \ @@ -139,14 +199,14 @@ GROUP(libtarget.a libgcc.a) { __sbss_start = ABSOLUTE (.); \ __SBSS_START__ = ABSOLUTE(.); *(.sbss.*) __SBSS_END__ = ABSOLUTE(.); \ __SBSSx_START__ = ABSOLUTE(.); *(.sbss*) __SBSSx_END__ = ABSOLUTE(.);\ - *(.scommon*) \ + *(.gnu.linkonce.sb.*) *(.scommon*) \ __sbss_end = ABSOLUTE (.); } \ > _region_ #define SECTION_bss(_region_, _vma_, _lma_) \ .bss _vma_ : _lma_ \ { __bss_start = ABSOLUTE (.); \ - FORCE_OUTPUT; *(.dynbss*) *(.bss*) *(COMMON) \ + FORCE_OUTPUT; *(.dynbss*) *(.bss*) *(.gnu.linkonce.b.*) *(COMMON) \ __bss_end = ABSOLUTE (.); } \ > _region_