diff options
| author | Charles.Forsyth <devnull@localhost> | 2009-03-25 15:55:14 +0000 |
|---|---|---|
| committer | Charles.Forsyth <devnull@localhost> | 2009-03-25 15:55:14 +0000 |
| commit | dfd1934d5e1ddbeb326f77fc0e52307c801a1a3e (patch) | |
| tree | f1e8b23278caae95e01d88b00421d6c3642357ef /emu/Irix/asm-mips.s | |
| parent | 78dfdcbd59dc8f36975e7695933e3f753957474c (diff) | |
x20090325-1554
Diffstat (limited to 'emu/Irix/asm-mips.s')
| -rw-r--r-- | emu/Irix/asm-mips.s | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/emu/Irix/asm-mips.s b/emu/Irix/asm-mips.s new file mode 100644 index 00000000..394baa36 --- /dev/null +++ b/emu/Irix/asm-mips.s @@ -0,0 +1,31 @@ +#include <sys/regdef.h> +#include <sys/asm.h> + +LEAF(FPsave) + cfc1 t0, $31 + sw t0, 0(a0) /* a0 is argument */ + j $31 + END(FPsave) + +LEAF(FPrestore) + lw t0, 0(a0) /* a0 is argument */ + ctc1 t0, $31 + j $31 + END(FPrestore) + + +/* + * lock from r4000 book + */ +LEAF(_tas) + .set noreorder +1: + ll v0,0(a0) /* a0 is argument */ + or t1, v0, 1 + sc t1,0(a0) + beq t1,zero,1b + nop + j $31 /* lock held */ + nop + .set reorder + END(_tas) |