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| author | Ian Lance Taylor <ian@airs.com> | 1996-03-12 17:47:55 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@airs.com> | 1996-03-12 17:47:55 +0000 |
| commit | 4b7d2399aed55fadb8aa6fbc04d8ca966d33ab91 (patch) | |
| tree | 0245fa2a2b067bf8f1aade61eb1bc59f56fe0936 /ld/ld.texinfo | |
| parent | a10d3dec45424072f969d3a09916f42a65a7eed6 (diff) | |
| download | gdb-4b7d2399aed55fadb8aa6fbc04d8ca966d33ab91.zip gdb-4b7d2399aed55fadb8aa6fbc04d8ca966d33ab91.tar.gz gdb-4b7d2399aed55fadb8aa6fbc04d8ca966d33ab91.tar.bz2 | |
Tue Mar 12 12:43:59 1996 David Mosberger-Tang <davidm@koala.azstarnet.com>
* ld.h (ld_config_type): Add warn_multiple_gp field.
* lexsup.c (parse_args): Handle --warn-multiple-gp.
* ldmain.c (warning_callback): Suppress multiple gp values warning
if --warn_multiple_gp was not used.
* ld.texinfo, ld.1: Document --warn-multiple-gp.
Diffstat (limited to 'ld/ld.texinfo')
| -rw-r--r-- | ld/ld.texinfo | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/ld/ld.texinfo b/ld/ld.texinfo index ad8ba4b..23fc78a 100644 --- a/ld/ld.texinfo +++ b/ld/ld.texinfo @@ -184,7 +184,7 @@ ld [ -o @var{output} ] @var{objfile}@dots{} [ -Ttext @var{org} ] [ -Tdata @var{org} ] [ -Tbss @var{org} ] [ -t ] [ -traditional-format ] [ -u @var{symbol}] [-V] [-v] [ -verbose] [ -version ] - [ -warn-common ] [ -warn-constructors] [ -warn-once ] + [ -warn-common ] [ -warn-constructors] [ -warn-multiple-gp ] [ -warn-once ] [ -y @var{symbol} ] [ -X ] [-x ] [ -( [ archives ] -) ] [ --start-group [ archives ] --end-group ] @@ -932,6 +932,20 @@ Warn if any global constructors are used. This is only useful for a few object file formats. For formats like COFF or ELF, the linker can not detect the use of global constructors. +@kindex -warn-multiple-gp +@item -warn-multiple-gp +Warn if multiple global pointer values are required in the output file. +This is only meaningful for certain processors, such as the Alpha. +Specifically, some processors put large-valued constants in a special +section. A special register (the global pointer) points into the middle +of this section, so that constants can be loaded efficiently via a +base-register relative addressing mode. Since the offset in +base-register relative mode is fixed and relatively small (e.g., 16 +bits), this limits the maximum size of the constant pool. Thus, in +large programs, it is often necessary to use multiple global pointer +values in order to be able to address all possible constants. This +option causes a warning to be issued whenever this case occurs. + @kindex -warn-once @cindex warnings, on undefined symbols @cindex undefined symbols, warnings on @@ -941,6 +955,7 @@ which refers to it. @kindex --whole-archive @cindex including an entire archive +@item --whole-archive For each archive mentioned on the command line after the @code{--whole-archive} option, include every object file in the archive in the link, rather than searching the archive for the required object @@ -949,6 +964,7 @@ library, forcing every object to be included in the resulting shared library. @kindex --no-whole-archive +@item --no-whole-archive Turn off the effect of the @code{--whole-archive} option for archives which appear later on the command line. |