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| author | Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> | 2014-07-17 22:09:10 +0300 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2014-07-18 14:10:23 -0400 |
| commit | 200d15479c0bc48471ee7b8e538ce33af990f82e (patch) | |
| tree | 864cc38895b9277384ed3a956f4ad324de2c4455 /src/thread/or1k/clone.s | |
| parent | 7bece9c2095ee81f14b1088f6b0ba2f37fecb283 (diff) | |
| download | musl-200d15479c0bc48471ee7b8e538ce33af990f82e.tar.gz musl-200d15479c0bc48471ee7b8e538ce33af990f82e.tar.xz musl-200d15479c0bc48471ee7b8e538ce33af990f82e.zip | |
add or1k (OpenRISC 1000) architecture port
With the exception of a fenv implementation, the port is fully featured. The port has been tested in or1ksim, the golden reference functional simulator for OpenRISC 1000. It passes all libc-test tests (except the math tests that requires a fenv implementation). The port assumes an or1k implementation that has support for atomic instructions (l.lwa/l.swa). Although it passes all the libc-test tests, the port is still in an experimental state, and has yet experienced very little 'real-world' use.
Diffstat (limited to 'src/thread/or1k/clone.s')
| -rw-r--r-- | src/thread/or1k/clone.s | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/src/thread/or1k/clone.s b/src/thread/or1k/clone.s new file mode 100644 index 00000000..02f380bd --- /dev/null +++ b/src/thread/or1k/clone.s @@ -0,0 +1,30 @@ +/* int clone(fn, stack, flags, arg, ptid, tls, ctid) + * r3 r4 r5 r6 sp+0 sp+4 sp+8 + * sys_clone(flags, stack, ptid, ctid, tls) + */ +.global __clone +.type __clone,@function +__clone: + l.addi r4, r4, -8 + l.sw 0(r4), r3 + l.sw 4(r4), r6 + /* (fn, st, fl, ar, pt, tl, ct) => (fl, st, pt, ct, tl) */ + l.ori r3, r5, 0 + l.lwz r5, 0(r1) + l.lwz r6, 8(r1) + l.lwz r7, 4(r1) + l.ori r11, r0, 220 /* __NR_clone */ + l.sys 1 + + l.sfeqi r11, 0 + l.bf 1f + l.nop + l.jr r9 + l.nop + +1: l.lwz r11, 0(r1) + l.jalr r11 + l.lwz r3, 4(r1) + + l.ori r11, r0, 93 /* __NR_exit */ + l.sys 1 |