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/* fpumacro.h: FPU related macros.
*
* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
*/
#ifndef _SPARC64_FPUMACRO_H
#define _SPARC64_FPUMACRO_H
#include <asm/asi.h>
#include <asm/visasm.h>
struct fpustate {
u32 regs[64];
};
#define FPUSTATE (struct fpustate *)(((unsigned long)current) + AOFF_task_fpregs)
extern __inline__ unsigned long fprs_read(void)
{
unsigned long retval;
__asm__ __volatile__("rd %%fprs, %0" : "=r" (retval));
return retval;
}
extern __inline__ void fprs_write(unsigned long val)
{
__asm__ __volatile__("wr %0, 0x0, %%fprs" : : "r" (val));
}
extern __inline__ void fpsave(unsigned long *fpregs,
unsigned long *fsr,
unsigned long *gsr)
{
__asm__ __volatile__ ("
wr %%g0, %3, %%asi
rd %%gsr, %%g1
membar #LoadStore | #StoreStore
stx %%fsr, [%1]
stx %%g1, [%2]
stda %%f0, [%0] %%asi
stda %%f16, [%0 + 64] %%asi
stda %%f32, [%0 + 128] %%asi
stda %%f48, [%0 + 192] %%asi
membar #Sync
" : /* No outputs */
: "r" (fpregs), "r" (fsr), "r" (gsr), "i" (ASI_BLK_P)
: "g1");
}
extern __inline__ void fpload(unsigned long *fpregs,
unsigned long *fsr,
unsigned long *gsr)
{
__asm__ __volatile__ ("
wr %%g0, %3, %%asi
membar #StoreLoad | #LoadLoad
ldda [%0] %%asi, %%f0
ldda [%0 + 64] %%asi, %%f16
ldda [%0 + 128] %%asi, %%f32
ldda [%0 + 192] %%asi, %%f48
ldx [%1], %%fsr
ldx [%2], %%g1
wr %%g1, 0, %%gsr
membar #Sync
" : /* No outputs */
: "r" (fpregs), "r" (fsr), "r" (gsr), "i" (ASI_BLK_P)
: "g1");
}
#endif /* !(_SPARC64_FPUMACRO_H) */
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