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| author | Rich Felker <dalias@aerifal.cx> | 2024-02-03 19:59:26 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2024-02-03 19:59:26 -0500 |
| commit | 407aea628af8c81d9e3f5a068568f2217db71bba (patch) | |
| tree | 6c6e063cf6aee7ac6548b2c6a21f7c4bcebe8c64 | |
| parent | 2e1bb87af24e3cb053bb3d5f4bb6e2e72f79c44a (diff) | |
| download | musl-407aea628af8c81d9e3f5a068568f2217db71bba.tar.gz | |
riscv: add TLSDESC support
| -rw-r--r-- | arch/riscv64/reloc.h | 1 | ||||
| -rw-r--r-- | src/ldso/riscv64/tlsdesc.s | 32 |
2 files changed, 33 insertions, 0 deletions
diff --git a/arch/riscv64/reloc.h b/arch/riscv64/reloc.h index 1ca13811..7c7c0611 100644 --- a/arch/riscv64/reloc.h +++ b/arch/riscv64/reloc.h @@ -17,6 +17,7 @@ #define REL_DTPMOD R_RISCV_TLS_DTPMOD64 #define REL_DTPOFF R_RISCV_TLS_DTPREL64 #define REL_TPOFF R_RISCV_TLS_TPREL64 +#define REL_TLSDESC R_RISCV_TLSDESC #define CRTJMP(pc,sp) __asm__ __volatile__( \ "mv sp, %1 ; jr %0" : : "r"(pc), "r"(sp) : "memory" ) diff --git a/src/ldso/riscv64/tlsdesc.s b/src/ldso/riscv64/tlsdesc.s new file mode 100644 index 00000000..bef8b322 --- /dev/null +++ b/src/ldso/riscv64/tlsdesc.s @@ -0,0 +1,32 @@ +.text +.global __tlsdesc_static +.hidden __tlsdesc_static +.type __tlsdesc_static,%function +__tlsdesc_static: + ld a0,8(a0) + jr t0 + +.global __tlsdesc_dynamic +.hidden __tlsdesc_dynamic +.type __tlsdesc_dynamic,%function +__tlsdesc_dynamic: + add sp,sp,-16 + sd t1,(sp) + sd t2,8(sp) + + ld t2,-8(tp) # t2=dtv + + ld a0,8(a0) # a0=&{modidx,off} + ld t1,8(a0) # t1=off + ld a0,(a0) # a0=modidx + sll a0,a0,3 # a0=8*modidx + + add a0,a0,t2 # a0=dtv+8*modidx + ld a0,(a0) # a0=dtv[modidx] + add a0,a0,t1 # a0=dtv[modidx]+off + sub a0,a0,tp # a0=dtv[modidx]+off-tp + + ld t1,(sp) + ld t2,8(sp) + add sp,sp,16 + jr t0 |