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/fsub.c | |
parent | ff2e6d7e27cf1f757ab0d97e1a9e46de47152a0e (diff) | |
download | op-kernel-dev-5cd272085bbc905532869f3e1fd18a7100496b56.zip op-kernel-dev-5cd272085bbc905532869f3e1fd18a7100496b56.tar.gz |
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/fsub.c')
-rw-r--r-- | arch/powerpc/math-emu/fsub.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/fsub.c b/arch/powerpc/math-emu/fsub.c new file mode 100644 index 0000000..9566790 --- /dev/null +++ b/arch/powerpc/math-emu/fsub.c @@ -0,0 +1,41 @@ +#include <linux/types.h> +#include <linux/errno.h> +#include <asm/uaccess.h> + +#include "soft-fp.h" +#include "double.h" + +int +fsub(void *frD, void *frA, void *frB) +{ + FP_DECL_D(A); + FP_DECL_D(B); + FP_DECL_D(R); + int ret = 0; + +#ifdef DEBUG + printk("%s: %p %p %p\n", __FUNCTION__, frD, 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 + + if (B_c != FP_CLS_NAN) + B_s ^= 1; + + if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF) + ret |= EFLAG_VXISI; + + FP_ADD_D(R, A, B); + +#ifdef DEBUG + printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); +#endif + + return (ret | __FP_PACK_D(frD, R)); +} |