diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/i386/math-emu/fpu_arith.c |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/i386/math-emu/fpu_arith.c')
-rw-r--r-- | arch/i386/math-emu/fpu_arith.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/arch/i386/math-emu/fpu_arith.c b/arch/i386/math-emu/fpu_arith.c new file mode 100644 index 00000000000..6972dec01af --- /dev/null +++ b/arch/i386/math-emu/fpu_arith.c @@ -0,0 +1,174 @@ +/*---------------------------------------------------------------------------+ + | fpu_arith.c | + | | + | Code to implement the FPU register/register arithmetic instructions | + | | + | Copyright (C) 1992,1993,1997 | + | W. Metzenthen, 22 Parker St, Ormond, Vic 3163, Australia | + | E-mail billm@suburbia.net | + | | + | | + +---------------------------------------------------------------------------*/ + +#include "fpu_system.h" +#include "fpu_emu.h" +#include "control_w.h" +#include "status_w.h" + + +void fadd__(void) +{ + /* fadd st,st(i) */ + int i = FPU_rm; + clear_C1(); + FPU_add(&st(i), FPU_gettagi(i), 0, control_word); +} + + +void fmul__(void) +{ + /* fmul st,st(i) */ + int i = FPU_rm; + clear_C1(); + FPU_mul(&st(i), FPU_gettagi(i), 0, control_word); +} + + + +void fsub__(void) +{ + /* fsub st,st(i) */ + clear_C1(); + FPU_sub(0, FPU_rm, control_word); +} + + +void fsubr_(void) +{ + /* fsubr st,st(i) */ + clear_C1(); + FPU_sub(REV, FPU_rm, control_word); +} + + +void fdiv__(void) +{ + /* fdiv st,st(i) */ + clear_C1(); + FPU_div(0, FPU_rm, control_word); +} + + +void fdivr_(void) +{ + /* fdivr st,st(i) */ + clear_C1(); + FPU_div(REV, FPU_rm, control_word); +} + + + +void fadd_i(void) +{ + /* fadd st(i),st */ + int i = FPU_rm; + clear_C1(); + FPU_add(&st(i), FPU_gettagi(i), i, control_word); +} + + +void fmul_i(void) +{ + /* fmul st(i),st */ + clear_C1(); + FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word); +} + + +void fsubri(void) +{ + /* fsubr st(i),st */ + clear_C1(); + FPU_sub(DEST_RM, FPU_rm, control_word); +} + + +void fsub_i(void) +{ + /* fsub st(i),st */ + clear_C1(); + FPU_sub(REV|DEST_RM, FPU_rm, control_word); +} + + +void fdivri(void) +{ + /* fdivr st(i),st */ + clear_C1(); + FPU_div(DEST_RM, FPU_rm, control_word); +} + + +void fdiv_i(void) +{ + /* fdiv st(i),st */ + clear_C1(); + FPU_div(REV|DEST_RM, FPU_rm, control_word); +} + + + +void faddp_(void) +{ + /* faddp st(i),st */ + int i = FPU_rm; + clear_C1(); + if ( FPU_add(&st(i), FPU_gettagi(i), i, control_word) >= 0 ) + FPU_pop(); +} + + +void fmulp_(void) +{ + /* fmulp st(i),st */ + clear_C1(); + if ( FPU_mul(&st(0), FPU_gettag0(), FPU_rm, control_word) >= 0 ) + FPU_pop(); +} + + + +void fsubrp(void) +{ + /* fsubrp st(i),st */ + clear_C1(); + if ( FPU_sub(DEST_RM, FPU_rm, control_word) >= 0 ) + FPU_pop(); +} + + +void fsubp_(void) +{ + /* fsubp st(i),st */ + clear_C1(); + if ( FPU_sub(REV|DEST_RM, FPU_rm, control_word) >= 0 ) + FPU_pop(); +} + + +void fdivrp(void) +{ + /* fdivrp st(i),st */ + clear_C1(); + if ( FPU_div(DEST_RM, FPU_rm, control_word) >= 0 ) + FPU_pop(); +} + + +void fdivp_(void) +{ + /* fdivp st(i),st */ + clear_C1(); + if ( FPU_div(REV|DEST_RM, FPU_rm, control_word) >= 0 ) + FPU_pop(); +} |