diff options
author | Kumar Gala <galak@kernel.crashing.org> | 2006-03-27 23:43:27 -0600 |
---|---|---|
committer | Kumar Gala <galak@kernel.crashing.org> | 2006-03-27 23:43:27 -0600 |
commit | 5cd272085bbc905532869f3e1fd18a7100496b56 (patch) | |
tree | 2c29f8a713e90fe55864502ed962c656014bca71 /arch/powerpc/math-emu/fcmpu.c | |
parent | ff2e6d7e27cf1f757ab0d97e1a9e46de47152a0e (diff) | |
download | linux-5cd272085bbc905532869f3e1fd18a7100496b56.tar.gz linux-5cd272085bbc905532869f3e1fd18a7100496b56.tar.bz2 linux-5cd272085bbc905532869f3e1fd18a7100496b56.zip |
powerpc: move math-emu over to arch/powerpc
Towards the goal of having arch/powerpc not build anything over in arch/ppc
move math-emu over. Also, killed some references to arch/ppc/ in the
arch/powerpc Makefile which should belong in drivers/ when the particular
sub-arch's move over to arch/powerpc.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/math-emu/fcmpu.c')
-rw-r--r-- | arch/powerpc/math-emu/fcmpu.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/fcmpu.c b/arch/powerpc/math-emu/fcmpu.c new file mode 100644 index 000000000000..b7e33176e618 --- /dev/null +++ b/arch/powerpc/math-emu/fcmpu.c @@ -0,0 +1,42 @@ +#include <linux/types.h> +#include <linux/errno.h> +#include <asm/uaccess.h> + +#include "soft-fp.h" +#include "double.h" + +int +fcmpu(u32 *ccr, int crfD, void *frA, void *frB) +{ + FP_DECL_D(A); + FP_DECL_D(B); + int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) }; + long cmp; + +#ifdef DEBUG + printk("%s: %p (%08x) %d %p %p\n", __FUNCTION__, ccr, *ccr, crfD, frA, frB); +#endif + + __FP_UNPACK_D(A, frA); + __FP_UNPACK_D(B, frB); + +#ifdef DEBUG + printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); + printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); +#endif + + FP_CMP_D(cmp, A, B, 2); + cmp = code[(cmp + 1) & 3]; + + __FPU_FPSCR &= ~(0x1f000); + __FPU_FPSCR |= (cmp << 12); + + *ccr &= ~(15 << ((7 - crfD) << 2)); + *ccr |= (cmp << ((7 - crfD) << 2)); + +#ifdef DEBUG + printk("CR: %08x\n", *ccr); +#endif + + return 0; +} |