Add embedded PowerPC ELF support.

2 files changed, 138 insertions, 0 deletions

diff --git a/ld/scripttempl/.Sanitize b/ld/scripttempl/.Sanitize
index 287648a..bf8a171 100644
--- a/ld/scripttempl/.Sanitize
+++ b/ld/scripttempl/.Sanitize
@@ -37,6 +37,7 @@ alpha.sc
 aout.sc
 ebmon29k.sc
 elf.sc
+elfppc.sc
 go32coff.sc
 h8300.sc
 h8300h.sc
diff --git a/ld/scripttempl/elfppc.sc b/ld/scripttempl/elfppc.sc
new file mode 100644
index 0000000..fc5973e
--- /dev/null
+++ b/ld/scripttempl/elfppc.sc
@@ -0,0 +1,137 @@
+#
+# Unusual variables checked by this code:
+#	NOP - two byte opcode for no-op (defaults to 0)
+#	DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
+#	OTHER_READONLY_SECTIONS - other than .text .init .ctors .rodata ...
+#		(e.g., .PARISC.milli)
+#	OTHER_READWRITE_SECTIONS - other than .data .bss .sdata ...
+#		(e.g., .PARISC.global)
+#	OTHER_SECTIONS - at the end
+#	EXECUTABLE_SYMBOLS - symbols that must be defined for an
+#		executable (e.g., _DYNAMIC_LINK)
+#	TEXT_START_SYMBOLS - symbols that appear at the start of the
+#		.text section.
+#	DATA_START_SYMBOLS - symbols that appear at the start of the
+#		.data section.
+#	OTHER_BSS_SYMBOLS - symbols that appear at the start of the
+#		.bss section besides __bss_start.
+#	DATA_PLT - .plt should be in data segment, not text segment.
+#
+# When adding sections, do note that the names of some sections are used
+# when specifying the start address of the next.
+#
+test -z "$ENTRY" && ENTRY=_start
+test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
+test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
+test "$LD_FLAG" = "N" && DATA_ADDR=.
+INTERP=".interp   ${RELOCATING-0} : { *(.interp) 	}"
+PLT=".plt    ${RELOCATING-0} : { *(.plt)	}"
+cat <<EOF
+OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
+	      "${LITTLE_OUTPUT_FORMAT}")
+OUTPUT_ARCH(${ARCH})
+ENTRY(${ENTRY})
+
+${RELOCATING+${LIB_SEARCH_DIRS}}
+${RELOCATING+/* Do we need any of these for elf?
+   __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}}  */}
+${RELOCATING+${EXECUTABLE_SYMBOLS}}
+${RELOCATING- /* For some reason, the Solaris linker makes bad executables
+  if gld -r is used and the intermediate file has sections starting
+  at non-zero addresses.  Could be a Solaris ld bug, could be a GNU ld
+  bug.  But for now assigning the zero vmas works.  */}
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  ${CREATE_SHLIB-${RELOCATING+. = ${TEXT_START_ADDR} + SIZEOF_HEADERS;}}
+  ${CREATE_SHLIB+${RELOCATING+. = SIZEOF_HEADERS;}}
+  ${CREATE_SHLIB-${INTERP}}
+  .hash        ${RELOCATING-0} : { *(.hash)		}
+  .dynsym      ${RELOCATING-0} : { *(.dynsym)		}
+  .dynstr      ${RELOCATING-0} : { *(.dynstr)		}
+  .rel.text    ${RELOCATING-0} : { *(.rel.text)		}
+  .rela.text   ${RELOCATING-0} : { *(.rela.text) 	}
+  .rel.data    ${RELOCATING-0} : { *(.rel.data)		}
+  .rela.data   ${RELOCATING-0} : { *(.rela.data) 	}
+  .rel.rodata  ${RELOCATING-0} : { *(.rel.rodata) 	}
+  .rela.rodata ${RELOCATING-0} : { *(.rela.rodata) 	}
+  .rel.got     ${RELOCATING-0} : { *(.rel.got)		}
+  .rela.got    ${RELOCATING-0} : { *(.rela.got)		}
+  .rel.ctors   ${RELOCATING-0} : { *(.rel.ctors)	}
+  .rela.ctors  ${RELOCATING-0} : { *(.rela.ctors)	}
+  .rel.dtors   ${RELOCATING-0} : { *(.rel.dtors)	}
+  .rela.dtors  ${RELOCATING-0} : { *(.rela.dtors)	}
+  .rel.init    ${RELOCATING-0} : { *(.rel.init)	}
+  .rela.init   ${RELOCATING-0} : { *(.rela.init)	}
+  .rel.fini    ${RELOCATING-0} : { *(.rel.fini)	}
+  .rela.fini   ${RELOCATING-0} : { *(.rela.fini)	}
+  .rel.bss     ${RELOCATING-0} : { *(.rel.bss)		}
+  .rela.bss    ${RELOCATING-0} : { *(.rela.bss)		}
+  .rel.plt     ${RELOCATING-0} : { *(.rel.plt)		}
+  .rela.plt    ${RELOCATING-0} : { *(.rela.plt)		}
+  .init        ${RELOCATING-0} : { *(.init)	} =${NOP-0}
+  ${DATA_PLT-${PLT}}
+  .text    ${RELOCATING-0} :
+  {
+    ${RELOCATING+${TEXT_START_SYMBOLS}}
+    *(.text)
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+  } =${NOP-0}
+  ${RELOCATING+_etext = .;}
+  ${RELOCATING+PROVIDE (etext = .);}
+  .fini    ${RELOCATING-0} : { *(.fini)    } =${NOP-0}
+  .rodata  ${RELOCATING-0} : { *(.rodata)  }
+  .rodata1 ${RELOCATING-0} : { *(.rodata1) }
+  ${RELOCATING+${OTHER_READONLY_SECTIONS}}
+
+  /* Read-write section, merged into data segment: */
+  ${RELOCATING+. = ${DATA_ADDR- ALIGN(8) + ${MAXPAGESIZE}};}
+  .data  ${RELOCATING-0} :
+  {
+    ${RELOCATING+${DATA_START_SYMBOLS}}
+    *(.data)
+    ${CONSTRUCTING+CONSTRUCTORS}
+  }
+  .data1 ${RELOCATING-0} : { *(.data1) }
+  ${RELOCATING+${OTHER_READWRITE_SECTIONS}}
+  .ctors       ${RELOCATING-0} : { *(.ctors)   }
+  .dtors       ${RELOCATING-0} : { *(.dtors)   }
+
+  /* FIXME: _GLOBAL_OFFSET_TABLE_ should really be set to the GOT + 32k on
+     machines whose addressing uses sign extended 16-bit literals (ie, most
+     RISC machines) and just the GOT on machines that either zero extend
+     literals (ie, the 88k), or use a full word literal field (ie, i386).  */
+  ${RELOCATING+_GLOBAL_OFFSET_TABLE_ = .;}
+  ${RELOCATING+_SDA_BASE_ = .;}
+  .got         ${RELOCATING-0} : { *(.got.plt) *(.got) }
+  ${RELOCATING+_GOT_END_ = .;}
+  .dynamic     ${RELOCATING-0} : { *(.dynamic) }
+  ${DATA_PLT+${PLT}}
+  /* 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   ${RELOCATING-0} : { *(.sdata) }
+  ${RELOCATING+_edata  =  .;}
+  ${RELOCATING+PROVIDE (edata = .);}
+  ${RELOCATING+__bss_start = .;}
+  ${RELOCATING+${OTHER_BSS_SYMBOLS}}
+  .sbss    ${RELOCATING-0} : { *(.sbss) *(.scommon) }
+  .bss     ${RELOCATING-0} :
+  {
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+  }
+  ${RELOCATING+_end = . ;}
+  ${RELOCATING+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) }
+
+  /* These must appear regardless of ${RELOCATING}.  */
+  ${OTHER_SECTIONS}
+}
+EOF