_start assembly for ppc

2026-01-02 03:25:01 +00:00 · 2021-04-09 19:17:03 -05:00 · 2021-04-09 19:17:03 -05:00 · ae3a0ff2d1
commit ae3a0ff2d1
parent b409accc96
1 changed files with 10 additions and 0 deletions
--- a/lib/std/start.zig
+++ b/lib/std/start.zig
@ -197,6 +197,16 @@ fn _start() callconv(.Naked) noreturn {
                : [argc] "={sp}" (-> [*]usize)
            );
        },
+        .powerpc => {
+            argc_argv_ptr = asm volatile (
+                \\ mr 3, 1
+                \\ li 0, 0
+                \\ mtlr 0
+                : [argc] "={r3}" (-> [*]usize)
+                :
+                : "r0", "r3"
+            );
+        },
        .powerpc64le => {
            // Setup the initial stack frame and clear the back chain pointer.
            // TODO: Support powerpc64 (big endian) on ELFv2.