Release 4.14 arch/alpha/include/asm/fpu.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_ALPHA_FPU_H
#define __ASM_ALPHA_FPU_H
#include <asm/special_insns.h>
#include <uapi/asm/fpu.h>
/* The following two functions don't need trapb/excb instructions
around the mf_fpcr/mt_fpcr instructions because (a) the kernel
never generates arithmetic faults and (b) call_pal instructions
are implied trap barriers. */
static inline unsigned long
rdfpcr(void)
{
unsigned long tmp, ret;
#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
__asm__ __volatile__ (
"ftoit $f0,%0\n\t"
"mf_fpcr $f0\n\t"
"ftoit $f0,%1\n\t"
"itoft %0,$f0"
: "=r"(tmp), "=r"(ret));
#else
__asm__ __volatile__ (
"stt $f0,%0\n\t"
"mf_fpcr $f0\n\t"
"stt $f0,%1\n\t"
"ldt $f0,%0"
: "=m"(tmp), "=m"(ret));
#endif
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 38 | 95.00% | 4 | 80.00% |
| Akinobu Mita | 2 | 5.00% | 1 | 20.00% |
| Total | 40 | 100.00% | 5 | 100.00% |
static inline void
wrfpcr(unsigned long val)
{
unsigned long tmp;
#if defined(CONFIG_ALPHA_EV6) || defined(CONFIG_ALPHA_EV67)
__asm__ __volatile__ (
"ftoit $f0,%0\n\t"
"itoft %1,$f0\n\t"
"mt_fpcr $f0\n\t"
"itoft %0,$f0"
: "=&r"(tmp) : "r"(val));
#else
__asm__ __volatile__ (
"stt $f0,%0\n\t"
"ldt $f0,%1\n\t"
"mt_fpcr $f0\n\t"
"ldt $f0,%0"
: "=m"(tmp) : "m"(val));
#endif
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 34 | 94.44% | 4 | 80.00% |
| Akinobu Mita | 2 | 5.56% | 1 | 20.00% |
| Total | 36 | 100.00% | 5 | 100.00% |
static inline unsigned long
swcr_update_status(unsigned long swcr, unsigned long fpcr)
{
/* EV6 implements most of the bits in hardware. Collect
the acrued exception bits from the real fpcr. */
if (implver() == IMPLVER_EV6) {
swcr &= ~IEEE_STATUS_MASK;
swcr |= (fpcr >> 35) & IEEE_STATUS_MASK;
}
return swcr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 44 | 100.00% | 2 | 100.00% |
| Total | 44 | 100.00% | 2 | 100.00% |
extern unsigned long alpha_read_fp_reg (unsigned long reg);
extern void alpha_write_fp_reg (unsigned long reg, unsigned long val);
extern unsigned long alpha_read_fp_reg_s (unsigned long reg);
extern void alpha_write_fp_reg_s (unsigned long reg, unsigned long val);
#endif /* __ASM_ALPHA_FPU_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 172 | 93.99% | 7 | 63.64% |
| David Howells | 6 | 3.28% | 2 | 18.18% |
| Akinobu Mita | 4 | 2.19% | 1 | 9.09% |
| Greg Kroah-Hartman | 1 | 0.55% | 1 | 9.09% |
| Total | 183 | 100.00% | 11 | 100.00% |
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