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authorDimitry Andric <dim@FreeBSD.org>2010-10-30 23:02:32 +0000
committerDimitry Andric <dim@FreeBSD.org>2010-10-30 23:02:32 +0000
commitb3cded65e92ba4d9b5e5a33fb95c4d551bda9c1b (patch)
tree69d40fbef2c0c4ee32fe97b7a28b510f2e3c2dbc /ld/scripttempl/elf32cr16.sc
parent7a815afd9b5121ee0f65dc1e1de1c0de6de97679 (diff)
downloadsrc-test2-b3cded65e92ba4d9b5e5a33fb95c4d551bda9c1b.tar.gz
src-test2-b3cded65e92ba4d9b5e5a33fb95c4d551bda9c1b.zip
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diff --git a/ld/scripttempl/elf32cr16.sc b/ld/scripttempl/elf32cr16.sc
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+# Linker Script for National Semiconductor's CR16-ELF32.
+
+# The next line should be uncommented if it is desired to link
+# without libstart.o and directly enter main.
+
+# ENTRY=_main
+
+test -z "$ENTRY" && ENTRY=_start
+cat <<EOF
+
+/* Example Linker Script for linking NS CR16 elf32 files. */
+
+/* The next line forces the entry point (${ENTRY} in this script)
+ to be entered in the output file as an undefined symbol.
+ It is needed in case the entry point is not called explicitly
+ (which is the usual case) AND is in an archive. */
+
+OUTPUT_FORMAT("${OUTPUT_FORMAT}")
+OUTPUT_ARCH(${ARCH})
+EXTERN(${ENTRY})
+ENTRY(${ENTRY})
+
+/* Define memory regions. */
+MEMORY
+{
+ rom : ORIGIN = 0x2, LENGTH = 3M
+ ram : ORIGIN = 4M, LENGTH = 10M
+}
+
+/* Many sections come in three flavours. There is the 'real' section,
+ like ".data". Then there are the per-procedure or per-variable
+ sections, generated by -ffunction-sections and -fdata-sections in GCC,
+ and useful for --gc-sections, which for a variable "foo" might be
+ ".data.foo". Then there are the linkonce sections, for which the linker
+ eliminates duplicates, which are named like ".gnu.linkonce.d.foo".
+ The exact correspondences are:
+
+ Section Linkonce section
+ .text .gnu.linkonce.t.foo
+ .rdata .gnu.linkonce.r.foo
+ .data .gnu.linkonce.d.foo
+ .bss .gnu.linkonce.b.foo
+ .debug_info .gnu.linkonce.wi.foo */
+
+SECTIONS
+{
+ .init :
+ {
+ __INIT_START = .;
+ KEEP (*(.init))
+ __INIT_END = .;
+ } > rom
+
+ .fini :
+ {
+ __FINI_START = .;
+ KEEP (*(.fini))
+ __FINI_END = .;
+ } > rom
+
+ .jcr :
+ {
+ KEEP (*(.jcr))
+ } > rom
+
+ .text :
+ {
+ __TEXT_START = .;
+ *(.text) *(.text.*) *(.gnu.linkonce.t.*)
+ __TEXT_END = .;
+ } > rom
+
+ .rdata :
+ {
+ __RDATA_START = .;
+ *(.rdata_4) *(.rdata_2) *(.rdata_1) *(.rdata.*) *(.gnu.linkonce.r.*) *(.rodata*)
+ __RDATA_END = .;
+ } > rom
+
+ .ctor ALIGN(4) :
+ {
+ __CTOR_START = .;
+ /* The compiler uses crtbegin.o to find the start
+ of the constructors, so we make sure it is
+ first. Because this is a wildcard, it
+ doesn't matter if the user does not
+ actually link against crtbegin.o; the
+ linker won't look for a file to match a
+ wildcard. The wildcard also means that it
+ doesn't matter which directory crtbegin.o
+ is in. */
+
+ KEEP (*crtbegin*.o(.ctors))
+
+ /* We don't want to include the .ctor section from
+ the crtend.o file until after the sorted ctors.
+ The .ctor section from the crtend file contains the
+ end of ctors marker and it must be last */
+
+ KEEP (*(EXCLUDE_FILE (*crtend*.o) .ctors))
+ KEEP (*(SORT(.ctors.*)))
+ KEEP (*(.ctors))
+ __CTOR_END = .;
+ } > rom
+
+ .dtor ALIGN(4) :
+ {
+ __DTOR_START = .;
+ KEEP (*crtbegin*.o(.dtors))
+ KEEP (*(EXCLUDE_FILE (*crtend*.o) .dtors))
+ KEEP (*(SORT(.dtors.*)))
+ KEEP (*(.dtors))
+ __DTOR_END = .;
+ } > rom
+
+ .data :
+ {
+ __DATA_START = .;
+ *(.data_4) *(.data_2) *(.data_1) *(.data) *(.data.*) *(.gnu.linkonce.d.*)
+ __DATA_END = .;
+ } > ram AT > rom
+
+ .bss (NOLOAD) :
+ {
+ __BSS_START = .;
+ *(.bss_4) *(.bss_2) *(.bss_1) *(.bss) *(COMMON) *(.bss.*) *(.gnu.linkonce.b.*)
+ __BSS_END = .;
+ } > ram
+
+/* You may change the sizes of the following sections to fit the actual
+ size your program requires.
+
+ The heap and stack are aligned to the bus width, as a speed optimization
+ for accessing data located there. */
+
+ .heap :
+ {
+ . = ALIGN(4);
+ __HEAP_START = .;
+ . += 0x2000; __HEAP_MAX = .;
+ } > ram
+
+ .stack :
+ {
+ . = ALIGN(4);
+ . += 0x6000;
+ __STACK_START = .;
+ } > ram
+
+ .istack :
+ {
+ . = ALIGN(4);
+ . += 0x100;
+ __ISTACK_START = .;
+ } > ram
+
+ .comment 0 : { *(.comment) }
+
+ /* DWARF debug sections.
+ Symbols in the DWARF debugging sections are relative to the beginning
+ of the section so we begin them at 0. */
+
+ .debug_aranges 0 : { *(.debug_aranges) }
+ .debug_pubnames 0 : { *(.debug_pubnames) }
+ .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
+ .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) }
+}
+
+__DATA_IMAGE_START = LOADADDR(.data);
+EOF