diff options
Diffstat (limited to 'src/pkg/runtime/memmove_386.s')
| -rw-r--r-- | src/pkg/runtime/memmove_386.s | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/src/pkg/runtime/memmove_386.s b/src/pkg/runtime/memmove_386.s deleted file mode 100644 index f7bc402590..0000000000 --- a/src/pkg/runtime/memmove_386.s +++ /dev/null @@ -1,65 +0,0 @@ - TEXT memmove(SB), $0 - - MOVL to+0(FP), DI - MOVL fr+4(FP), SI - MOVL n+8(FP), BX - JLT fault - -/* - * check and set for backwards - * should we look closer for overlap? - */ - CMPL SI, DI - JLS back - -/* - * foreward copy loop - */ - MOVL BX, CX - SHRL $2, CX - ANDL $3, BX - - REP; MOVSL - MOVL BX, CX - REP; MOVSB - - MOVL to+0(FP),AX - RET -/* - * whole thing backwards has - * adjusted addresses - */ -back: - ADDL BX, DI - ADDL BX, SI - STD - -/* - * copy - */ - MOVL BX, CX - SHRL $2, CX - ANDL $3, BX - - SUBL $4, DI - SUBL $4, SI - REP; MOVSL - - ADDL $3, DI - ADDL $3, SI - MOVL BX, CX - REP; MOVSB - - CLD - MOVL to+0(FP),AX - RET - -/* - * if called with negative count, - * treat as error rather than - * rotating all of memory - */ -fault: - MOVL $0,SI - MOVL 0(SI), AX - RET |