binutils-gdb/ld/emulparams/elf32lriscv-defs.sh
Jim Wilson 640be958cd RISC-V: Adjust __global_pointer$ value to reduce code size.
ld/
	* emulparams/elf32lriscv-defs.sh (DATA_START_SYMBOLS): New.
	(SDATA_START_SYMBOLS): Define __SDATA_BEGIN__.  Don't define
	__global_pointer$.
	(OTHER_END_SYMBOLS): New.  Define __global_pointer$.
	* testsuite/ld-riscv-elf/pcrel-lo-addend-2.d (#ld): Add --no-relax.
2018-10-15 16:00:28 -07:00

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# This is an ELF platform.
SCRIPT_NAME=elf
ARCH=riscv
NO_REL_RELOCS=yes
TEMPLATE_NAME=elf32
EXTRA_EM_FILE=riscvelf
ELFSIZE=32
if test `echo "$host" | sed -e s/64//` = `echo "$target" | sed -e s/64//`; then
case " $EMULATION_LIBPATH " in
*" ${EMULATION_NAME} "*)
NATIVE=yes
;;
esac
fi
# Enable shared library support for everything except an embedded elf target.
case "$target" in
riscv*-elf)
;;
*)
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
;;
esac
TEXT_START_ADDR=0x10000
MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
DATA_START_SYMBOLS="${CREATE_SHLIB-__DATA_BEGIN__ = .;}"
SDATA_START_SYMBOLS="${CREATE_SHLIB-__SDATA_BEGIN__ = .;}
*(.srodata.cst16) *(.srodata.cst8) *(.srodata.cst4) *(.srodata.cst2) *(.srodata .srodata.*)"
INITIAL_READONLY_SECTIONS=".interp : { *(.interp) } ${CREATE_PIE-${INITIAL_READONLY_SECTIONS}}"
INITIAL_READONLY_SECTIONS="${RELOCATING+${CREATE_SHLIB-${INITIAL_READONLY_SECTIONS}}}"
# We must cover as much of sdata as possible if it exists. If sdata+bss is
# smaller than 0x1000 then we should start from bss end to cover as much of
# the program as possible. But we can't allow gp to cover any of rodata, as
# the address of variables in rodata may change during relaxation, so we start
# from data in that case.
OTHER_END_SYMBOLS="${CREATE_SHLIB-__BSS_END__ = .;
__global_pointer$ = MIN(__SDATA_BEGIN__ + 0x800,
MAX(__DATA_BEGIN__ + 0x800, __BSS_END__ - 0x800));}"