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| author | Alex Rønne Petersen <alex@alexrp.com> | 2024-07-30 04:02:49 +0200 |
|---|---|---|
| committer | Alex Rønne Petersen <alex@alexrp.com> | 2024-07-31 02:05:17 +0200 |
| commit | 982510f8d565895cd6b467da092d2feb851aabe7 (patch) | |
| tree | 6aa85edef4e01fa4e47652596439032650b1e69e /lib/std/start.zig | |
| parent | 78e581b86f11bfc8da277cbad7b7a30941e55e95 (diff) | |
| download | zig-982510f8d565895cd6b467da092d2feb851aabe7.tar.gz zig-982510f8d565895cd6b467da092d2feb851aabe7.zip | |
start: Initialize gp to __global_pointer$ on riscv.
Diffstat (limited to 'lib/std/start.zig')
| -rw-r--r-- | lib/std/start.zig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/std/start.zig b/lib/std/start.zig index bca0922fb3..7b68f99b9f 100644 --- a/lib/std/start.zig +++ b/lib/std/start.zig @@ -273,6 +273,14 @@ fn _start() callconv(.Naked) noreturn { \\ b %[posixCallMainAndExit] , .riscv32, .riscv64 => + // The RISC-V ELF ABI assumes that `gp` is set to the value of `__global_pointer$` at + // startup in order for GP relaxation to work, even in static builds. + \\ .weak __global_pointer$ + \\ .hidden __global_pointer$ + \\ .option push + \\ .option norelax + \\ lla gp, __global_pointer$ + \\ .option pop \\ li s0, 0 \\ li ra, 0 \\ mv a0, sp |