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Remove some custom sections from RISC-V's default linker scripts

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This was added so compressed loads could have smaller offsets for
accessing the data section, but the result was that writable sections
ended up in INITIAL_READONLY_SECTIONS.  This is a bad idea.  The fix is
to just remove this micro-optimization.

Thanks to Alan Morda for finding the problem!

ld/ChangeLog

2017-01-09  Palmer Dabbelt <palmer@dabbelt.com>
            Kito Cheng <kito.cheng@gmail.com>

        * emulparams/elf32lriscv-defs.sh (INITIAL_READONLY_SECTIONS):
        Removed.
        (SDATA_START_SYMBOLS): Likewise.
This commit is contained in:
Palmer Dabbelt
2016-12-29 17:29:53 -08:00
parent cd6581da62
commit 6ec11ab97a
2 changed files with 7 additions and 12 deletions
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7
gas/ChangeLog
View File

@ -1,3 +1,10 @@
2017-01-09 Palmer Dabbelt <palmer@dabbelt.com>
Kito Cheng <kito.cheng@gmail.com>
* emulparams/elf32lriscv-defs.sh (INITIAL_READONLY_SECTIONS):
Removed.
(SDATA_START_SYMBOLS): Likewise.
2017-01-09 Nick Clifton <nickc@redhat.com>
* po/sv.po: New Swedish translation.

12
ld/emulparams/elf32lriscv-defs.sh
View File

@ -26,17 +26,5 @@ COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
SDATA_START_SYMBOLS="_gp = . + 0x800;
*(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata .srodata.*)"
# Place the data section before text section. This enables more compact
# global variable access for RVC code via linker relaxation.
INITIAL_READONLY_SECTIONS="
.data : { *(.data) *(.data.*) *(.gnu.linkonce.d.*) }
.rodata : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r.*) }
.srodata : { ${SDATA_START_SYMBOLS} }
.sdata : { *(.sdata .sdata.* .gnu.linkonce.s.*) }
.sbss : { *(.dynsbss) *(.sbss .sbss.* .gnu.linkonce.sb.*) }
.bss : { *(.dynbss) *(.bss .bss.* .gnu.linkonce.b.*) *(COMMON) }
. = ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1));"
INITIAL_READONLY_SECTIONS=".interp : { *(.interp) } ${CREATE_PIE-${INITIAL_READONLY_SECTIONS}}"
INITIAL_READONLY_SECTIONS="${RELOCATING+${CREATE_SHLIB-${INITIAL_READONLY_SECTIONS}}}"
SDATA_START_SYMBOLS="${CREATE_PIE+${SDATA_START_SYMBOLS}}"