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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 | |
| parent | b9f7f2e8762922a1a24d41358164ebe9ae437e31 (diff) | |
| download | musl-aacd348637e38795dd7ae3c7c8c908d8c0cd24fd.tar.gz musl-aacd348637e38795dd7ae3c7c8c908d8c0cd24fd.tar.bz2 musl-aacd348637e38795dd7ae3c7c8c908d8c0cd24fd.tar.xz musl-aacd348637e38795dd7ae3c7c8c908d8c0cd24fd.zip | |
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')
| -rw-r--r-- | src/thread/sh/__set_thread_area.s | 5 | ||||
| -rw-r--r-- | src/thread/sh/__unmapself.s | 22 | ||||
| -rw-r--r-- | src/thread/sh/clone.s | 47 | ||||
| -rw-r--r-- | src/thread/sh/syscall_cp.s | 39 |
4 files changed, 113 insertions, 0 deletions
diff --git a/src/thread/sh/__set_thread_area.s b/src/thread/sh/__set_thread_area.s new file mode 100644 index 00000000..53887e64 --- /dev/null +++ b/src/thread/sh/__set_thread_area.s @@ -0,0 +1,5 @@ +.global __set_thread_area +.type __set_thread_area, @function +__set_thread_area: + rts + ldc r4, gbr diff --git a/src/thread/sh/__unmapself.s b/src/thread/sh/__unmapself.s new file mode 100644 index 00000000..b34c3c80 --- /dev/null +++ b/src/thread/sh/__unmapself.s @@ -0,0 +1,22 @@ +.text +.global __unmapself +.type __unmapself, @function +__unmapself: + mov #91, r3 ! SYS_munmap + trapa #18 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + + mov #1, r3 ! SYS_exit + mov #0, r4 + trapa #17 + + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 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 diff --git a/src/thread/sh/syscall_cp.s b/src/thread/sh/syscall_cp.s new file mode 100644 index 00000000..5677b9c0 --- /dev/null +++ b/src/thread/sh/syscall_cp.s @@ -0,0 +1,39 @@ +.text +.global __syscall_cp_asm +.type __syscall_cp_asm, @function +__syscall_cp_asm: + +.global __cp_begin +__cp_begin: + mov.l @r4, r4 + tst r4, r4 + bt 2f + + mov.l L1, r0 + braf r0 + nop +1: + +.align 2 +L1: .long __cancel@PLT-(1b-.) + +2: mov r5, r3 + mov r6, r4 + mov r7, r5 + mov.l @r15, r6 + mov.l @(4,r15), r7 + mov.l @(8,r15), r0 + mov.l @(12,r15), r1 + trapa #22 + +.global __cp_end +__cp_end: + ! work around hardware bug + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + or r0, r0 + + rts + nop |