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* ld.texinfo (-Tldata-segment): Describe. 

* ldlex.h (OPTION_TLDATA_SEGMENT): New enum value.
	* lexsup.c (ld_options): Add -Tldata-segment.
	(parse_args): Handle OPTION_TLDATA_SEGMENT.
	* scripttempl/elf.sc: Support LARGE_DATA_ADDR.
This commit is contained in:
Alan Modra 2013-01-14 13:37:10 +00:00
parent d6391ce5a6
commit 0d705e9f94
5 changed files with 30 additions and 0 deletions
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9
ld/ChangeLog
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@ -1,3 +1,12 @@
2013-01-14 Leif Ekblad <leif@rdos.net>
Alan Modra <amodra@gmail.com>
* ld.texinfo (-Tldata-segment): Describe.
* ldlex.h (OPTION_TLDATA_SEGMENT): New enum value.
* lexsup.c (ld_options): Add -Tldata-segment.
(parse_args): Handle OPTION_TLDATA_SEGMENT.
* scripttempl/elf.sc: Support LARGE_DATA_ADDR.
2013-01-10 H.J. Lu <hongjiu.lu@intel.com> 2013-01-10 H.J. Lu <hongjiu.lu@intel.com>
* deffilep.y: Remove trailing white spaces. * deffilep.y: Remove trailing white spaces.

6
ld/ld.texinfo
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@ -1846,6 +1846,12 @@ When creating an ELF executable or shared object for a target where
the read-only data is in its own segment separate from the executable the read-only data is in its own segment separate from the executable
text, it will set the address of the first byte of the read-only data segment. text, it will set the address of the first byte of the read-only data segment.
@kindex -Tldata-segment=@var{org}
@item -Tldata-segment=@var{org}
@cindex ldata segment origin, cmd line
When creating an ELF executable or shared object for x86-64 medium memory
model, it will set the address of the first byte of the ldata segment.
@kindex --unresolved-symbols @kindex --unresolved-symbols
@item --unresolved-symbols=@var{method} @item --unresolved-symbols=@var{method}
Determine how to handle unresolved symbols. There are four possible Determine how to handle unresolved symbols. There are four possible

1
ld/ldlex.h
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@ -69,6 +69,7 @@ enum option_values
OPTION_TTEXT, OPTION_TTEXT,
OPTION_TTEXT_SEGMENT, OPTION_TTEXT_SEGMENT,
OPTION_TRODATA_SEGMENT, OPTION_TRODATA_SEGMENT,
OPTION_TLDATA_SEGMENT,
OPTION_TRADITIONAL_FORMAT, OPTION_TRADITIONAL_FORMAT,
OPTION_UR, OPTION_UR,
OPTION_VERBOSE, OPTION_VERBOSE,

5
ld/lexsup.c
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@ -446,6 +446,8 @@ static const struct ld_option ld_options[] =
'\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH }, '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
{ {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT}, { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
'\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH }, '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
{ {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
'\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
{ {"unresolved-symbols=<method>", required_argument, NULL, { {"unresolved-symbols=<method>", required_argument, NULL,
OPTION_UNRESOLVED_SYMBOLS}, OPTION_UNRESOLVED_SYMBOLS},
'\0', NULL, N_("How to handle unresolved symbols. <method> is:\n" '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
@ -1199,6 +1201,9 @@ parse_args (unsigned argc, char **argv)
case OPTION_TRODATA_SEGMENT: case OPTION_TRODATA_SEGMENT:
set_segment_start (".rodata-segment", optarg); set_segment_start (".rodata-segment", optarg);
break; break;
case OPTION_TLDATA_SEGMENT:
set_segment_start (".ldata-segment", optarg);
break;
case OPTION_TRADITIONAL_FORMAT: case OPTION_TRADITIONAL_FORMAT:
link_info.traditional_format = TRUE; link_info.traditional_format = TRUE;
break; break;

9
ld/scripttempl/elf.sc
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@ -608,6 +608,15 @@ cat <<EOF
${LARGE_BSS_AFTER_BSS+${LARGE_BSS}} ${LARGE_BSS_AFTER_BSS+${LARGE_BSS}}
${RELOCATING+${OTHER_BSS_END_SYMBOLS}} ${RELOCATING+${OTHER_BSS_END_SYMBOLS}}
${RELOCATING+. = ALIGN(${ALIGNMENT});} ${RELOCATING+. = ALIGN(${ALIGNMENT});}
EOF
LARGE_DATA_ADDR=". = SEGMENT_START(\"ldata-segment\", ${LARGE_DATA_ADDR-.});"
SHLIB_LARGE_DATA_ADDR=". = SEGMENT_START(\"ldata-segment\", ${SHLIB_LARGE_DATA_ADDR-.});"
cat <<EOF
${RELOCATING+${CREATE_SHLIB-${CREATE_PIE-${LARGE_DATA_ADDR}}}}
${RELOCATING+${CREATE_SHLIB+${SHLIB_LARGE_DATA_ADDR}}}
${RELOCATING+${CREATE_PIE+${SHLIB_LARGE_DATA_ADDR}}}
${LARGE_SECTIONS} ${LARGE_SECTIONS}
${LARGE_BSS_AFTER_BSS-${LARGE_BSS}} ${LARGE_BSS_AFTER_BSS-${LARGE_BSS}}
${RELOCATING+. = ALIGN(${ALIGNMENT});} ${RELOCATING+. = ALIGN(${ALIGNMENT});}