diff options
| author | Shinya Kuribayashi <skuribay@ruby.dti.ne.jp> | 2008-03-25 21:30:06 +0900 |
|---|---|---|
| committer | Shinya Kuribayashi <skuribay@ruby.dti.ne.jp> | 2008-03-25 21:30:06 +0900 |
| commit | 1898840797c7f50799377bd5b285a8a93a82c419 (patch) | |
| tree | 11695cad9aecb04ee6a129ee7699d53753aa4425 /cpu/mips/cache.S | |
| parent | 2f5d414ccb4024dd0992ff6b22561732dbc73590 (diff) | |
[MIPS] Replace memory clearance code with f_fill64
This routine fills memory with zero by 64 bytes, and is 64-bit capable.
Signed-off-by: Shinya Kuribayashi <skuribay@ruby.dti.ne.jp>
Diffstat (limited to 'cpu/mips/cache.S')
| -rw-r--r-- | cpu/mips/cache.S | 43 |
1 files changed, 28 insertions, 15 deletions
diff --git a/cpu/mips/cache.S b/cpu/mips/cache.S index e2e1da0505..6d39ba9aac 100644 --- a/cpu/mips/cache.S +++ b/cpu/mips/cache.S @@ -104,6 +104,27 @@ #define icacheop(kva, n, cacheSize, cacheLineSize, op) \ icacheopn(kva, n, cacheSize, cacheLineSize, 1, (op)) + .macro f_fill64 dst, offset, val + LONG_S \val, (\offset + 0 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 1 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 2 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 3 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 4 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 5 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 6 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 7 * LONGSIZE)(\dst) +#if LONGSIZE == 4 + LONG_S \val, (\offset + 8 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 9 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 10 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 11 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 12 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 13 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 14 * LONGSIZE)(\dst) + LONG_S \val, (\offset + 15 * LONGSIZE)(\dst) +#endif + .endm + /******************************************************************************* * * mips_cache_reset - low level initialisation of the primary caches @@ -128,22 +149,14 @@ NESTED(mips_cache_reset, 0, ra) li v0, MIPS_MAX_CACHE_SIZE - /* Now clear that much memory starting from zero. + /* + * Now clear that much memory starting from zero. */ - - li a0, KSEG1 - addu a1, a0, v0 -2: - sw zero, 0(a0) - sw zero, 4(a0) - sw zero, 8(a0) - sw zero, 12(a0) - sw zero, 16(a0) - sw zero, 20(a0) - sw zero, 24(a0) - sw zero, 28(a0) - addu a0, 32 - bltu a0, a1, 2b + PTR_LI a0, KSEG1 + PTR_ADDU a1, a0, v0 +2: PTR_ADDIU a0, 64 + f_fill64 a0, -64, zero + bne a0, a1, 2b /* Set invalid tag. */ |