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| author | David S. Miller <davem@davemloft.net> | 2012-05-15 11:23:01 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-15 11:23:47 -0700 |
| commit | 1b35a57b1c1781f0fc8fc554f732b3a5408c5244 (patch) | |
| tree | 80e5616798e0dc5ec138f020e6aa9ae482378462 /arch/sparc/kernel/head_32.S | |
| parent | 2119ff6d2bc0dd6a97de1632e50cd7936049738c (diff) | |
| download | op-kernel-dev-1b35a57b1c1781f0fc8fc554f732b3a5408c5244.zip op-kernel-dev-1b35a57b1c1781f0fc8fc554f732b3a5408c5244.tar.gz | |
sparc32: Kill off software 32-bit multiply/divide routines.
For the explicit calls to .udiv/.umul in assembler, I made a
mechanical (read as: safe) transformation. I didn't attempt
to make any simplifications.
In particular, __ndelay and __udelay can be simplified significantly.
Some of the %y reads are unnecessary and these routines have no need
any longer for allocating a register window, they can be leaf
functions.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/head_32.S')
| -rw-r--r-- | arch/sparc/kernel/head_32.S | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S index 6c95e9f..69645ca 100644 --- a/arch/sparc/kernel/head_32.S +++ b/arch/sparc/kernel/head_32.S @@ -746,51 +746,6 @@ sun4d_init: /* Fall through to sun4m_init */ sun4m_init: - -#define PATCH_IT(dst, src) \ - set (dst), %g5; \ - set (src), %g4; \ - ld [%g4], %g3; \ - st %g3, [%g5]; \ - ld [%g4+0x4], %g3; \ - st %g3, [%g5+0x4]; - - /* Signed multiply. */ - PATCH_IT(.mul, .mul_patch) - PATCH_IT(.mul+0x08, .mul_patch+0x08) - - /* Signed remainder. */ - PATCH_IT(.rem, .rem_patch) - PATCH_IT(.rem+0x08, .rem_patch+0x08) - PATCH_IT(.rem+0x10, .rem_patch+0x10) - PATCH_IT(.rem+0x18, .rem_patch+0x18) - PATCH_IT(.rem+0x20, .rem_patch+0x20) - PATCH_IT(.rem+0x28, .rem_patch+0x28) - - /* Signed division. */ - PATCH_IT(.div, .div_patch) - PATCH_IT(.div+0x08, .div_patch+0x08) - PATCH_IT(.div+0x10, .div_patch+0x10) - PATCH_IT(.div+0x18, .div_patch+0x18) - PATCH_IT(.div+0x20, .div_patch+0x20) - - /* Unsigned multiply. */ - PATCH_IT(.umul, .umul_patch) - PATCH_IT(.umul+0x08, .umul_patch+0x08) - - /* Unsigned remainder. */ - PATCH_IT(.urem, .urem_patch) - PATCH_IT(.urem+0x08, .urem_patch+0x08) - PATCH_IT(.urem+0x10, .urem_patch+0x10) - PATCH_IT(.urem+0x18, .urem_patch+0x18) - - /* Unsigned division. */ - PATCH_IT(.udiv, .udiv_patch) - PATCH_IT(.udiv+0x08, .udiv_patch+0x08) - PATCH_IT(.udiv+0x10, .udiv_patch+0x10) - -#undef PATCH_IT - /* Ok, the PROM could have done funny things and apple cider could still * be sitting in the fault status/address registers. Read them all to * clear them so we don't get magic faults later on. |
