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| author | Bobby Bingham <koorogi@koorogi.info> | 2016-04-30 19:18:17 -0500 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2016-05-08 22:57:40 -0400 |
| commit | c0ede9e4046a0882d83ae4b45c7dfac86fb7c15d (patch) | |
| tree | 02956e3cc93a50bcc9c946fbc2bbffb883e72f2f /src/thread/powerpc64 | |
| parent | 6bc7d9c411c3a32cfa9d239b73fffb2ba66dd9ff (diff) | |
| download | musl-c0ede9e4046a0882d83ae4b45c7dfac86fb7c15d.tar.gz musl-c0ede9e4046a0882d83ae4b45c7dfac86fb7c15d.tar.xz musl-c0ede9e4046a0882d83ae4b45c7dfac86fb7c15d.zip | |
add powerpc64 port
Diffstat (limited to 'src/thread/powerpc64')
| -rw-r--r-- | src/thread/powerpc64/__set_thread_area.s | 8 | ||||
| -rw-r--r-- | src/thread/powerpc64/__unmapself.s | 9 | ||||
| -rw-r--r-- | src/thread/powerpc64/clone.s | 47 | ||||
| -rw-r--r-- | src/thread/powerpc64/syscall_cp.s | 37 |
4 files changed, 101 insertions, 0 deletions
diff --git a/src/thread/powerpc64/__set_thread_area.s b/src/thread/powerpc64/__set_thread_area.s new file mode 100644 index 00000000..9622826d --- /dev/null +++ b/src/thread/powerpc64/__set_thread_area.s @@ -0,0 +1,8 @@ +.text +.global __set_thread_area +.type __set_thread_area, %function +__set_thread_area: + mr 13, 3 + li 3, 0 + blr + diff --git a/src/thread/powerpc64/__unmapself.s b/src/thread/powerpc64/__unmapself.s new file mode 100644 index 00000000..c9360b47 --- /dev/null +++ b/src/thread/powerpc64/__unmapself.s @@ -0,0 +1,9 @@ + .text + .global __unmapself + .type __unmapself,%function +__unmapself: + li 0, 91 # __NR_munmap + sc + li 0, 1 #__NR_exit + sc + blr diff --git a/src/thread/powerpc64/clone.s b/src/thread/powerpc64/clone.s new file mode 100644 index 00000000..03aa4468 --- /dev/null +++ b/src/thread/powerpc64/clone.s @@ -0,0 +1,47 @@ +.text +.global __clone +.type __clone, %function +__clone: + # int clone(fn, stack, flags, arg, ptid, tls, ctid) + # a b c d e f g + # 3 4 5 6 7 8 9 + # pseudo C code: + # tid = syscall(SYS_clone,c,b,e,f,g); + # if (!tid) syscall(SYS_exit, a(d)); + # return tid; + + # create initial stack frame for new thread + clrrdi 4, 4, 4 + li 0, 0 + stdu 0,-32(4) + + # save fn and arg to child stack + std 3, 8(4) + std 6, 16(4) + + # shuffle args into correct registers and call SYS_clone + mr 3, 5 + #mr 4, 4 + mr 5, 7 + mr 6, 8 + mr 7, 9 + li 0, 120 # SYS_clone = 120 + sc + + # if error, negate return (errno) + bns+ 1f + neg 3, 3 + +1: # if we're the parent, return + cmpwi cr7, 3, 0 + bnelr cr7 + + # we're the child. call fn(arg) + ld 3, 16(1) + ld 12, 8(1) + mtctr 12 + bctrl + + # call SYS_exit. exit code is already in r3 from fn return value + li 0, 1 # SYS_exit = 1 + sc diff --git a/src/thread/powerpc64/syscall_cp.s b/src/thread/powerpc64/syscall_cp.s new file mode 100644 index 00000000..d420dbde --- /dev/null +++ b/src/thread/powerpc64/syscall_cp.s @@ -0,0 +1,37 @@ + .global __cp_begin + .hidden __cp_begin + .global __cp_end + .hidden __cp_end + .global __cp_cancel + .hidden __cp_cancel + .hidden __cancel + .global __syscall_cp_asm + .hidden __syscall_cp_asm + .text + .type __syscall_cp_asm,%function +__syscall_cp_asm: + # at enter: r3 = pointer to self->cancel, r4: syscall no, r5: first arg, r6: 2nd, r7: 3rd, r8: 4th, r9: 5th, r10: 6th +__cp_begin: + # if (self->cancel) goto __cp_cancel + lwz 0, 0(3) + cmpwi cr7, 0, 0 + bne- cr7, __cp_cancel + + # make syscall + mr 0, 4 + mr 3, 5 + mr 4, 6 + mr 5, 7 + mr 6, 8 + mr 7, 9 + mr 8, 10 + sc + +__cp_end: + # return error ? -r3 : r3 + bnslr+ + neg 3, 3 + blr + +__cp_cancel: + b __cancel |