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author | Kumar Gala <galak@kernel.crashing.org> | 2006-03-27 23:43:27 -0600 |
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committer | Kumar Gala <galak@kernel.crashing.org> | 2006-03-27 23:43:27 -0600 |
commit | 5cd272085bbc905532869f3e1fd18a7100496b56 (patch) | |
tree | 2c29f8a713e90fe55864502ed962c656014bca71 /arch/powerpc/math-emu/fmsub.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/fmsub.c')
-rw-r--r-- | arch/powerpc/math-emu/fmsub.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/fmsub.c b/arch/powerpc/math-emu/fmsub.c new file mode 100644 index 000000000000..203fd48a6fec --- /dev/null +++ b/arch/powerpc/math-emu/fmsub.c @@ -0,0 +1,51 @@ +#include <linux/types.h> +#include <linux/errno.h> +#include <asm/uaccess.h> + +#include "soft-fp.h" +#include "double.h" + +int +fmsub(void *frD, void *frA, void *frB, void *frC) +{ + FP_DECL_D(R); + FP_DECL_D(A); + FP_DECL_D(B); + FP_DECL_D(C); + FP_DECL_D(T); + int ret = 0; + +#ifdef DEBUG + printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC); +#endif + + __FP_UNPACK_D(A, frA); + __FP_UNPACK_D(B, frB); + __FP_UNPACK_D(C, frC); + +#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); + printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c); +#endif + + if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) || + (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF)) + ret |= EFLAG_VXIMZ; + + FP_MUL_D(T, A, C); + + if (B_c != FP_CLS_NAN) + B_s ^= 1; + + if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF) + ret |= EFLAG_VXISI; + + FP_ADD_D(R, T, 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)); +} |