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| author | Michael Brown | 2005-03-08 19:53:11 +0100 |
|---|---|---|
| committer | Michael Brown | 2005-03-08 19:53:11 +0100 |
| commit | 3d6123e69ab879c72ff489afc5bf93ef0b7a94ce (patch) | |
| tree | 9f3277569153a550fa8d81ebd61bd88f266eb8da /src/arch/e1/core/memset.S | |
| download | ipxe-3d6123e69ab879c72ff489afc5bf93ef0b7a94ce.tar.gz ipxe-3d6123e69ab879c72ff489afc5bf93ef0b7a94ce.tar.xz ipxe-3d6123e69ab879c72ff489afc5bf93ef0b7a94ce.zip | |
Initial revision
Diffstat (limited to 'src/arch/e1/core/memset.S')
| -rw-r--r-- | src/arch/e1/core/memset.S | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/arch/e1/core/memset.S b/src/arch/e1/core/memset.S new file mode 100644 index 000000000..a8ceb5353 --- /dev/null +++ b/src/arch/e1/core/memset.S @@ -0,0 +1,47 @@ +/* + * Derived from the Hyperstone's library source code. + * Modefied src in order to apply the -mgnu-param compiler option. + * Copyright (C) 2002-2003 GDT, Yannis Mitsos <gmitsos@telecom.ntua.gr> + * George Thanos <gthanos@telecom.ntua.gr> + */ + .text + .align 2 + .global _memset + +;ENTRY(_memset) +_memset: FRAME L9, L3 + MASK L5, L1, 0xFF + MOV L8, L2 + CMPI L0, 0 # if n = 0 then return + BE retour + +loop0: CMPBI L8, 0x3 + BZ word_bound + ADDI L0, -1 + DBNZ loop0 + STBU.N L8, L5, 1 +retour: RET PC, L3 + +word_bound: + CMPI L0, 8 + DBLT loop2 + MOV L7, L5 + SHLI L7, 8 + OR L5, L7 + MOV L7, L5 + SHLI L7, 16 + OR L5, L7 + MOV L6, L5 +loop1: ADDI L0, -8 + CMPI L0, 8 + DBGE loop1 + STD.P L8, L5 + CMPI L0, 0 + DBNZ loop2 + ANDNI L5, ~ 0xFF + RET PC, L3 + +loop2: ADDI L0, -1 + DBNZ loop2 + STBU.N L8, L5, 1 + RET PC, L3 |