3d0d14f983
lindent these files:
errors lines of code errors/KLOC
arch/x86/math-emu/ 2236 9424 237.2
arch/x86/math-emu/ 128 8706 14.7
no other changes. No code changed:
text data bss dec hex filename
5589802 612739 3833856 10036397 9924ad vmlinux.before
5589802 612739 3833856 10036397 9924ad vmlinux.after
the intent of this patch is to ease the automated tracking of kernel
code quality - it's just much easier for us to maintain it if every file
in arch/x86 is supposed to be clean.
NOTE: it is a known problem of lindent that it causes some style damage
of its own, but it's a safe tool (well, except for the gcc array range
initializers extension), so we did the bulk of the changes via lindent,
and did the manual fixups in a followup patch.
the resulting math-emu code has been tested by Thomas Gleixner on a real
386 DX CPU as well, and it works fine.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
153 lines
2.9 KiB
C
153 lines
2.9 KiB
C
/*---------------------------------------------------------------------------+
|
|
| 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();
|
|
}
|