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| author | imp <imp@FreeBSD.org> | 2010-07-15 01:47:47 +0000 |
|---|---|---|
| committer | imp <imp@FreeBSD.org> | 2010-07-15 01:47:47 +0000 |
| commit | 51a5ce204352b0d083412c214df7b5fa2bf9d41a (patch) | |
| tree | 793ed2943f99db9ff014f61b2aaa28959b2adfd4 /sys/mips/mips/swtch.S | |
| parent | 5cf2e8608d754524c56bea2a01e94041cdc91dd6 (diff) | |
| download | FreeBSD-src-51a5ce204352b0d083412c214df7b5fa2bf9d41a.zip FreeBSD-src-51a5ce204352b0d083412c214df7b5fa2bf9d41a.tar.gz | |
Remove one layer of indirection. No need to call cpu_throw which then
calls mips_cpu_call via an obfuscated assembler call. Instead, delete
the current cpu_throw, and rename mips_cpu_throw to cpu_throw. This
is nicer to the cache on each context switch (since fixed jumps can be
prefected, while jumps through a register can't). Incidentally, it
also saves about 5 or 6 instructions.
Reviewed by: jmallet@
Diffstat (limited to 'sys/mips/mips/swtch.S')
| -rw-r--r-- | sys/mips/mips/swtch.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/mips/mips/swtch.S b/sys/mips/mips/swtch.S index 0b30570..b83b8b8 100644 --- a/sys/mips/mips/swtch.S +++ b/sys/mips/mips/swtch.S @@ -216,7 +216,7 @@ LEAF(savectx) move v0, zero END(savectx) -NON_LEAF(mips_cpu_throw, CALLFRAME_SIZ, ra) +NON_LEAF(cpu_throw, CALLFRAME_SIZ, ra) mfc0 t0, MIPS_COP_0_STATUS # t0 = saved status register nop nop @@ -227,7 +227,7 @@ NON_LEAF(mips_cpu_throw, CALLFRAME_SIZ, ra) # thread's context, so jump # right to action nop # BDSLOT -END(mips_cpu_throw) +END(cpu_throw) /* * cpu_switch(struct thread *old, struct thread *new, struct mutex *mtx); |
