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| author | Rich Felker <dalias@aerifal.cx> | 2014-02-27 22:03:25 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-02-27 22:03:25 -0500 |
| commit | aacd348637e38795dd7ae3c7c8c908d8c0cd24fd (patch) | |
| tree | 3055797eea08dafe99dcdbd1e7efabd44bcb723b /src/thread/sh/clone.s | |
| parent | b9f7f2e8762922a1a24d41358164ebe9ae437e31 (diff) | |
| download | musl-aacd348637e38795dd7ae3c7c8c908d8c0cd24fd.tar.gz | |
rename superh port to "sh" for consistency
linux, gcc, etc. all use "sh" as the name for the superh arch. there
was already some inconsistency internally in musl: the dynamic linker
was searching for "ld-musl-sh.path" as its path file despite its own
name being "ld-musl-superh.so.1". there was some sentiment in both
directions as to how to resolve the inconsistency, but overall "sh"
was favored.
Diffstat (limited to 'src/thread/sh/clone.s')
| -rw-r--r-- | src/thread/sh/clone.s | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/thread/sh/clone.s b/src/thread/sh/clone.s new file mode 100644 index 00000000..d6c9184d --- /dev/null +++ b/src/thread/sh/clone.s @@ -0,0 +1,47 @@ +.text +.global __clone +.type __clone, @function +__clone: +! incoming: fn stack flags arg ptid tls ctid +! r4 r5 r6 r7 @r15 @(4,r15) @(8,r15) + + mov #-16, r0 + and r0, r5 + + mov r4, r1 ! r1 = fn + mov r7, r2 ! r2 = arg + + mov #120, r3 ! r3 = __NR_clone + mov r6, r4 ! r4 = flags + !mov r5, r5 ! r5 = stack + mov.l @r15, r6 ! r6 = ptid + mov.l @(8,r15), r7 ! r7 = ctid + mov.l @(4,r15), r0 ! r0 = tls + trapa #21 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + + cmp/eq #0, r0 + bt 1f + + ! we are the parent, return + rts + nop + +1: ! we are the child, call fn(arg) + jsr @r1 + mov r2, r4 + + mov #1, r3 ! __NR_exit + mov r0, r4 + trapa #17 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 |