view src/ppc.ldscript @ 4407:4ee73bbe4f8e

Always use boyer_moore in ASCII or Latin-1 buffers with ASCII search strings. 2007-12-26 Aidan Kehoe <kehoea@parhasard.net> * casetab.c: Extend and correct some case table documentation. * search.c (search_buffer): Correct a bug where only the first entry for a character in the case equivalence table was examined in determining if the Boyer-Moore search algorithm is appropriate. If there are case mappings outside of the charset and row of the characters specified in the search string, those case mappings can be safely ignored (and Boyer-Moore search can be used) if we know from the buffer statistics that the corresponding characters cannot occur. * search.c (boyer_moore): Assert that we haven't been passed a string with varying characters sets or rows within character sets. That's what simple_search is for. In the very rare event that a character in the search string has a canonical case mapping that is not in the same character set and row, don't try to search for the canonical character, search for some other character that is in the the desired character set and row. Assert that the case table isn't corrupt. Do not search for any character case mappings that cannot possibly occur in the buffer, given the buffer metadata about its contents.
author Aidan Kehoe <kehoea@parhasard.net>
date Wed, 26 Dec 2007 17:30:16 +0100
parents 3ecd8885ac67
children
line wrap: on
line source

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  .  */
}