_GLOBAL_OFFSET_TABLE_ symbol is not emitted for RISCV target

[deepakshirkem]

ELD does not emit GLOBAL_OFFSET_TABLE symbol for RISCV targets. This symbol is required for enabling GOT-relative addressing.

Reproducer:

cat >1.c <<\EOF
extern int _GLOBAL_OFFSET_TABLE_;
int *v = &_GLOBAL_OFFSET_TABLE_;
int a;
int foo() { return a; }
EOF

clang -o 1.o -target riscv64 1.c -c -ffunction-sections -fPIC
ld.eld -o 1.eld.out 1.o -mtriple riscv64-unknown-elf

Error:

Error: 1.o(.data+0x0): undefined reference to `_GLOBAL_OFFSET_TABLE_'
Fatal: Linking had errors.

[quic-seaswara]

I previously mentioned in the #1123 to move the test to common, and not specific to x86.

Probably the change to GLOBAL_OFFSET_TABLE can be moved to the common backend or use a helper function to reduce code duplication ?

[deepakshirkem]

Yes, you're right. I will reduce the GLOBAL_OFFSET_TABLE code across all targets and move the related tests to a common location.