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std.os.linux.start_pie: Add csky support.

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Alex Rønne Petersen 2024-07-24 09:24:33 +02:00
parent 2dabb7ec77
commit bc054a713e
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1 changed files with 9 additions and 0 deletions
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9
lib/std/os/linux/start_pie.zig
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@ -7,6 +7,7 @@ const R_AMD64_RELATIVE = 8;
const R_386_RELATIVE = 8;
const R_ARM_RELATIVE = 23;
const R_AARCH64_RELATIVE = 1027;
const R_CSKY_RELATIVE = 9;
const R_LARCH_RELATIVE = 3;
const R_68K_RELATIVE = 22;
const R_RISCV_RELATIVE = 3;
@ -18,6 +19,7 @@ const R_RELATIVE = switch (builtin.cpu.arch) {
.x86_64 => R_AMD64_RELATIVE,
.arm, .armeb, .thumb, .thumbeb => R_ARM_RELATIVE,
.aarch64, .aarch64_be => R_AARCH64_RELATIVE,
.csky => R_CSKY_RELATIVE,
.loongarch32, .loongarch64 => R_LARCH_RELATIVE,
.m68k => R_68K_RELATIVE,
.riscv64 => R_RISCV_RELATIVE,
@ -63,6 +65,13 @@ fn getDynamicSymbol() [*]elf.Dyn {
\\ add %[ret], %[ret], #:lo12:_DYNAMIC
: [ret] "=r" (-> [*]elf.Dyn),
),
// The CSKY ABI requires the gb register to point to the GOT. Additionally, the first
// entry in the GOT is defined to hold the address of _DYNAMIC.
.csky => asm volatile (
\\ mov %[ret], gb
\\ ldw %[ret], %[ret]
: [ret] "=r" (-> [*]elf.Dyn),
),
.loongarch32, .loongarch64 => asm volatile (
\\ .weak _DYNAMIC
\\ .hidden _DYNAMIC