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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/x86/math-emu/fpu_arith.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/x86/math-emu/fpu_arith.c')
-rw-r--r-- | kernel/arch/x86/math-emu/fpu_arith.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/kernel/arch/x86/math-emu/fpu_arith.c b/kernel/arch/x86/math-emu/fpu_arith.c new file mode 100644 index 000000000..aeab24e08 --- /dev/null +++ b/kernel/arch/x86/math-emu/fpu_arith.c @@ -0,0 +1,152 @@ +/*---------------------------------------------------------------------------+ + | 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(); +} |