Mercurial > hg > xemacs-beta
view src/ppc.ldscript @ 1298:1b4bc72f433e
[xemacs-hg @ 2003-02-14 12:05:06 by ben]
speedups to build process
autoload.el: Factor out common code in generate-{c-,}file-autoloads-1 into new
function generate-autoload-ish-1. \(I was originally going to use
this for custom as well but ended up thinking better of it.)
cus-dep.el: Cache the old computed values in custom-load.el and reuse them as
necessary, to speed up running cus-dep (which would take 25-30
seconds to do all files in lisp/*, lisp/*/* on my Pentium III
700). Use `message' not `princ' to get correct newline behavior.
Output messages showing each file we do actually process.
update-elc-2.el: Rewrite algorithm to be much faster -- cache calls to
directory-files and don't make needless calls to file-exists-p,
file-directory-p because they're way way slow.
Autoload early and only when update-elc has told us to.
update-elc.el: If no files need byte compilation, signal to update-elc-2 to do
any necessary autoload updating (using the file REBUILD_AUTOLOADS)
rather than doing it ourselves, which would be way slow. Ignore
updates to custom-load.el and auto-autoloads.el when checking to
see whether autoloads need updating. Optimize out many
unnecessary calls to file-exists-p to speed it up somewhat. (####
The remaining time is 50% or more in locate-file; this is
presumably because, even though it has a cache, it's still
statting each file to determine it's actually there. By calling
directory-files ourselves, building a tree, and then looking in
that tree, we could drastically shorten the time needed to do the
locate operation.)
author | ben |
---|---|
date | Fri, 14 Feb 2003 12:05:07 +0000 |
parents | 3ecd8885ac67 |
children |
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OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc") OUTPUT_ARCH(powerpc) ENTRY(_start) SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/powerpc-unknown-linux-gnulibc1/lib); /* Do we need any of these for elf? __DYNAMIC = 0; */ PROVIDE (__stack = 0); SECTIONS { /* Read-only sections, merged into text segment: */ . = 0x01800000 + SIZEOF_HEADERS; .interp : { *(.interp) } .hash : { *(.hash) } .dynsym : { *(.dynsym) } .dynstr : { *(.dynstr) } .gnu.version : { *(.gnu.version) } .gnu.version_d : { *(.gnu.version_d) } .gnu.version_r : { *(.gnu.version_r) } .rela.text : { *(.rela.text) *(.rela.gnu.linkonce.t*) } .rela.data : { *(.rela.data) *(.rela.gnu.linkonce.d*) } .rela.rodata : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) } .rela.got : { *(.rela.got) } .rela.got1 : { *(.rela.got1) } .rela.got2 : { *(.rela.got2) } .rela.ctors : { *(.rela.ctors) } .rela.dtors : { *(.rela.dtors) } .rela.init : { *(.rela.init) } .rela.fini : { *(.rela.fini) } .rela.bss : { *(.rela.bss) } .rela.plt : { *(.rela.plt) } .rela.sdata : { *(.rela.sdata) } .rela.sbss : { *(.rela.sbss) } .rela.sdata2 : { *(.rela.sdata2) } .rela.sbss2 : { *(.rela.sbss2) } .text : { *(.text) /* .gnu.warning sections are handled specially by elf32.em. */ *(.gnu.warning) *(.gnu.linkonce.t*) } =0 .init : { *(.init) } =0 .fini : { *(.fini) } =0 .rodata : { *(.rodata) *(.gnu.linkonce.r*) } .rodata1 : { *(.rodata1) } _etext = .; PROVIDE (etext = .); .sdata2 : { *(.sdata2) } .sbss2 : { *(.sbss2) } /* Adjust the address for the data segment. We want to adjust up to the same address within the page on the next page up. It would be more correct to do this: . = .; The current expression does not correctly handle the case of a text segment ending precisely at the end of a page; it causes the data segment to skip a page. The above expression does not have this problem, but it will currently (2/95) cause BFD to allocate a single segment, combining both text and data, for this case. This will prevent the text segment from being shared among multiple executions of the program; I think that is more important than losing a page of the virtual address space (note that no actual memory is lost; the page which is skipped can not be referenced). */ . = .; .data : { *(.data) *(.gnu.linkonce.d*) CONSTRUCTORS } .data1 : { *(.data1) } .got1 : { *(.got1) } .dynamic : { *(.dynamic) } /* Put .ctors and .dtors next to the .got2 section, so that the pointers get relocated with -mrelocatable. Also put in the .fixup pointers. The current compiler no longer needs this, but keep it around for 2.7.2 */ PROVIDE (_GOT2_START_ = .); .got2 : { *(.got2) } PROVIDE (__CTOR_LIST__ = .); .ctors : { *(.ctors) } PROVIDE (__CTOR_END__ = .); PROVIDE (__DTOR_LIST__ = .); .dtors : { *(.dtors) } PROVIDE (__DTOR_END__ = .); PROVIDE (_FIXUP_START_ = .); .fixup : { *(.fixup) } PROVIDE (_FIXUP_END_ = .); PROVIDE (_GOT2_END_ = .); PROVIDE (_GOT_START_ = .); .got : { *(.got) } .got.plt : { *(.got.plt) } PROVIDE (_GOT_END_ = .); /* 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 : { *(.sdata) } _edata = .; PROVIDE (edata = .); .sbss : { } .bss : { PROVIDE (__sbss_start = .); *(.sbss) *(.scommon) PROVIDE (__sbss_end = .); PROVIDE (__bss_start = .); *(.dynbss) *(.bss) *(COMMON) } _end = . ; PROVIDE (end = .); /* These are needed for ELF backends which have not yet been converted to the new style linker. */ .stab 0 : { *(.stab) } .stabstr 0 : { *(.stabstr) } /* 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) } .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) } /* 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) } /* These must appear regardless of . */ }