ELF ld -r scripts

"ld -r" generally should not combine object file sections with
different names.  For example, "ld -r" should not combine ".text",
".text.hot" and ".text.cold" into an output ".text" section.  An
exception needs to be made for linker created sections, for example,
branch trampoline sections that might be created even for ld -r.

"ld -r" also should not define symbols in linker scripts.  Any
definitions are likely to conflict with those defined at final link.

A MEMORY spec is also not needed for ld -r.

	* Makefile.am (eelf32btsmip_fbsd.c, eelf32btsmipn32_fbsd.c),
	(eelf32epiphany.c, eelf32epiphany_4x4.c, eelf32ltsmip_fbsd.c),
	(eelf32ltsmipn32_fbsd.c, eelf32xc16x.c, eelf32xc16xl.c),
	(eelf32xc16xs.c, emcorepe.c, enios2elf.c, enios2linux.c),
	(eelf64btsmip_fbsd.c, eelf64ltsmip_fbsd.c): Correct dependencies.
	* Makefile.in: Regenerate.
	* emulparams/aarch64cloudabi.sh, * emulparams/aarch64fbsd.sh,
	* emulparams/aarch64linux.sh, * emulparams/aarch64linux32.sh,
	* emulparams/arc-nps.sh, * emulparams/elf32_spu.sh,
	* emulparams/elf32_tic6x_le.sh, * emulparams/elf32bmip.sh,
	* emulparams/elf32btsmipn32.sh, * emulparams/elf32lr5900n32.sh,
	* emulparams/elf32mep.sh, * emulparams/elf32metag.sh,
	* emulparams/elf64btsmip.sh, * emulparams/shelf_vxworks.sh,
	* emulparams/shlelf_fd.sh, * scripttempl/DWARF.sc,
	* scripttempl/alpha.sc, * scripttempl/alphavms.sc,
	* scripttempl/arclinux.sc, * scripttempl/armbpabi.sc,
	* scripttempl/avr.sc, * scripttempl/dlx.sc, * scripttempl/elf.sc,
	* scripttempl/elf32cr16.sc, * scripttempl/elf32cr16c.sc,
	* scripttempl/elf32crx.sc, * scripttempl/elf32msp430.sc,
	* scripttempl/elf32msp430_3.sc, * scripttempl/elf32xc16x.sc,
	* scripttempl/elf32xc16xl.sc, * scripttempl/elf32xc16xs.sc,
	* scripttempl/elf64hppa.sc, * scripttempl/elf_chaos.sc,
	* scripttempl/elfarc.sc, * scripttempl/elfarcv2.sc,
	* scripttempl/elfd10v.sc, * scripttempl/elfd30v.sc,
	* scripttempl/elfm68hc11.sc, * scripttempl/elfm68hc12.sc,
	* scripttempl/elfm9s12z.sc, * scripttempl/elfmicroblaze.sc,
	* scripttempl/elfxgate.sc, * scripttempl/elfxtensa.sc,
	* scripttempl/epiphany_4x4.sc, * scripttempl/ft32.sc,
	* scripttempl/hppaelf.sc, * scripttempl/ia64vms.sc,
	* scripttempl/ip2k.sc, * scripttempl/iq2000.sc,
	* scripttempl/mep.sc, * scripttempl/mmo.sc,
	* scripttempl/nds32elf.sc, * scripttempl/pru.sc,
	* scripttempl/sh.sc, * scripttempl/v850.sc,
	* scripttempl/v850_rh850.sc, * scripttempl/visium.sc,
	* scripttempl/xstormy16.sc: Condition various parts of scripts on
	${RELOCATABLE} in order to prevent ld -r merging sections or
	defining symbols.  Remove MEMORY and VERSION definitions from
	ld -r scripts too.
	* testsuite/ld-elf/group2.d, * testsuite/ld-elf/group4.d,
	* testsuite/ld-elf/group5.d, * testsuite/ld-elf/group6.d,
	* testsuite/ld-elf/group7.d, * testsuite/ld-elf/group8a.d,
	* testsuite/ld-elf/group8b.d, * testsuite/ld-elf/group9a.d,
	* testsuite/ld-elf/group9b.d, * testsuite/ld-elf/pr17550a.d,
	* testsuite/ld-elf/pr17550b.d,
	* testsuite/ld-elf/pr17550d.d: Don't xfail cr16 and crx.
	* testsuite/ld-elf/init-fini-arrays.d,
	* testsuite/ld-elf/pr22677.d: Likewise, and dont' xfail mep.

1 files changed, 24 insertions, 16 deletions

diff --git a/ld/scripttempl/elf32cr16c.sc b/ld/scripttempl/elf32cr16c.sc
index 637302e..55645c6 100644
--- a/ld/scripttempl/elf32cr16c.sc
+++ b/ld/scripttempl/elf32cr16c.sc
@@ -6,6 +6,10 @@
 # are permitted in any medium without royalty provided the copyright
 # notice and this notice are preserved.
 
+# Using an empty script for ld -r is better than mashing together
+# sections.  This hack likely leaves ld -Ur broken.
+test -n "${RELOCATING}" || exit 0
+
 test -z "$ENTRY" && ENTRY=_start
 cat <<EOF
 
@@ -19,8 +23,9 @@ cat <<EOF
    are permitted in any medium without royalty provided the copyright
    notice and this notice are preserved.  */
 
-
-${RELOCATING+ENTRY(${ENTRY})}
+EOF
+test -n "${RELOCATING}" && cat <<EOF
+ENTRY(${ENTRY})
 
 MEMORY
 {
@@ -30,6 +35,9 @@ MEMORY
   ram	    : ORIGIN = 4M,      LENGTH = 10M
 }
 
+EOF
+
+cat <<EOF
 SECTIONS
 {
 /* The heap is located in near memory, to suit both the near and
@@ -38,21 +46,21 @@ SECTIONS
    there. The alignment to 4 bytes is compatible for both the CR16C
    bus width (2 bytes) and CR16CPlus bus width (4 bytes).  */
 
-  .text            : { __TEXT_START = .;   *(.text)                                        __TEXT_END = .; } > rom
-  .rdata           : { __RDATA_START = .;  *(.rdata_4) *(.rdata_2) *(.rdata_1)             __RDATA_END = .; } > near_rom
-  .ctor ALIGN(4)   : { __CTOR_LIST = .;    *(.ctors)                                       __CTOR_END = .; } > near_rom
-  .dtor ALIGN(4)   : { __DTOR_LIST = .;    *(.dtors)                                       __DTOR_END = .; } > near_rom
-  .data            : { __DATA_START = .;   *(.data_4) *(.data_2) *(.data_1) *(.data)       __DATA_END = .; } > ram AT > rom
-  .bss (NOLOAD)    : { __BSS_START = .;    *(.bss_4) *(.bss_2) *(.bss_1) *(.bss) *(COMMON) __BSS_END = .; } > ram
-  .nrdata          : { __NRDATA_START = .; *(.nrdat_4) *(.nrdat_2) *(.nrdat_1)             __NRDATA_END =  .; } > near_rom
-  .ndata           : { __NDATA_START = .;  *(.ndata_4) *(.ndata_2) *(.ndata_1)             __NDATA_END = .; } > near_ram AT > rom
-  .nbss (NOLOAD)   : { __NBSS_START = .;   *(.nbss_4) *(.nbss_2) *(.nbss_1) *(.ncommon)    __NBSS_END = .; } > near_ram
-  .heap (NOLOAD)   : { . = ALIGN(4); __HEAP_START = .; . += 0x2000;                        __HEAP_MAX = .; } > near_ram
-  .stack (NOLOAD)  : { . = ALIGN(4); . += 0x6000; __STACK_START = .; } > ram
-  .istack (NOLOAD) : { . = ALIGN(2); . += 0x100; __ISTACK_START = .; } > ram
+  .text            : { __TEXT_START = .;   *(.text)                                        __TEXT_END = .; }${RELOCATING+ > rom}
+  .rdata           : { __RDATA_START = .;  *(.rdata_4) *(.rdata_2) *(.rdata_1)             __RDATA_END = .; }${RELOCATING+ > near_rom}
+  .ctor ALIGN(4)   : { __CTOR_LIST = .;    *(.ctors)                                       __CTOR_END = .; }${RELOCATING+ > near_rom}
+  .dtor ALIGN(4)   : { __DTOR_LIST = .;    *(.dtors)                                       __DTOR_END = .; }${RELOCATING+ > near_rom}
+  .data            : { __DATA_START = .;   *(.data_4) *(.data_2) *(.data_1) *(.data)       __DATA_END = .; }${RELOCATING+ > ram AT > rom}
+  .bss (NOLOAD)    : { __BSS_START = .;    *(.bss_4) *(.bss_2) *(.bss_1) *(.bss) *(COMMON) __BSS_END = .; }${RELOCATING+ > ram}
+  .nrdata          : { __NRDATA_START = .; *(.nrdat_4) *(.nrdat_2) *(.nrdat_1)             __NRDATA_END =  .; }${RELOCATING+ > near_rom}
+  .ndata           : { __NDATA_START = .;  *(.ndata_4) *(.ndata_2) *(.ndata_1)             __NDATA_END = .; }${RELOCATING+ > near_ram AT > rom}
+  .nbss (NOLOAD)   : { __NBSS_START = .;   *(.nbss_4) *(.nbss_2) *(.nbss_1) *(.ncommon)    __NBSS_END = .; }${RELOCATING+ > near_ram}
+  .heap (NOLOAD)   : { . = ALIGN(4); __HEAP_START = .; . += 0x2000;                        __HEAP_MAX = .; }${RELOCATING+ > near_ram}
+  .stack (NOLOAD)  : { . = ALIGN(4); . += 0x6000; __STACK_START = .; }${RELOCATING+ > ram}
+  .istack (NOLOAD) : { . = ALIGN(2); . += 0x100; __ISTACK_START = .; }${RELOCATING+ > ram}
 }
 
-__DATA_IMAGE_START = LOADADDR(.data);
-__NDATA_IMAGE_START = LOADADDR(.ndata);
+${RELOCATING+__DATA_IMAGE_START = LOADADDR(.data);}
+${RELOCATING+__NDATA_IMAGE_START = LOADADDR(.ndata);}
 
 EOF