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| author | Andrew Kelley <andrew@ziglang.org> | 2020-09-22 11:41:21 -0700 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2020-09-22 11:41:21 -0700 |
| commit | e2d1f9874df2a9221aaa9ec55bd2974b70601f64 (patch) | |
| tree | eff7919b0717e193aa53b70fcee862d6f33deddb /lib/std/start.zig | |
| parent | 52b8239a22aa37fe3914427cd4e2905231769e59 (diff) | |
| parent | 58ee5f4e61cd9b7a9ba65798e2214efa3753a733 (diff) | |
| download | zig-e2d1f9874df2a9221aaa9ec55bd2974b70601f64.tar.gz zig-e2d1f9874df2a9221aaa9ec55bd2974b70601f64.zip | |
Merge remote-tracking branch 'origin/master' into llvm11
Diffstat (limited to 'lib/std/start.zig')
| -rw-r--r-- | lib/std/start.zig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/std/start.zig b/lib/std/start.zig index c65cd08981..aea31a1531 100644 --- a/lib/std/start.zig +++ b/lib/std/start.zig @@ -121,6 +121,21 @@ fn _start() callconv(.Naked) noreturn { : [argc] "=r" (-> [*]usize) ); }, + .powerpc64le => { + // Before returning the stack pointer, we have to set up a backchain + // and a few other registers required by the ELFv2 ABI. + // TODO: Support powerpc64 (big endian) on ELFv2. + starting_stack_ptr = asm ( + \\ mr 4, 1 + \\ subi 1, 1, 32 + \\ li 5, 0 + \\ std 5, 0(1) + \\ mr %[argc], 4 + : [argc] "=r" (-> [*]usize) + : + : "r4", "r5" + ); + }, else => @compileError("unsupported arch"), } // If LLVM inlines stack variables into _start, they will overwrite |