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Diffstat (limited to 'arch/frv/include/asm/math-emu.h')
| -rw-r--r-- | arch/frv/include/asm/math-emu.h | 302 |
1 files changed, 0 insertions, 302 deletions
diff --git a/arch/frv/include/asm/math-emu.h b/arch/frv/include/asm/math-emu.h deleted file mode 100644 index 8af762d..0000000 --- a/arch/frv/include/asm/math-emu.h +++ /dev/null @@ -1,302 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -#ifndef _ASM_MATH_EMU_H -#define _ASM_MATH_EMU_H - -#include <asm/setup.h> -#include <linux/linkage.h> - -/* Status Register bits */ - -/* accrued exception bits */ -#define FPSR_AEXC_INEX 3 -#define FPSR_AEXC_DZ 4 -#define FPSR_AEXC_UNFL 5 -#define FPSR_AEXC_OVFL 6 -#define FPSR_AEXC_IOP 7 - -/* exception status bits */ -#define FPSR_EXC_INEX1 8 -#define FPSR_EXC_INEX2 9 -#define FPSR_EXC_DZ 10 -#define FPSR_EXC_UNFL 11 -#define FPSR_EXC_OVFL 12 -#define FPSR_EXC_OPERR 13 -#define FPSR_EXC_SNAN 14 -#define FPSR_EXC_BSUN 15 - -/* quotient byte, assumes big-endian, of course */ -#define FPSR_QUOTIENT(fpsr) (*((signed char *) &(fpsr) + 1)) - -/* condition code bits */ -#define FPSR_CC_NAN 24 -#define FPSR_CC_INF 25 -#define FPSR_CC_Z 26 -#define FPSR_CC_NEG 27 - - -/* Control register bits */ - -/* rounding mode */ -#define FPCR_ROUND_RN 0 /* round to nearest/even */ -#define FPCR_ROUND_RZ 1 /* round to zero */ -#define FPCR_ROUND_RM 2 /* minus infinity */ -#define FPCR_ROUND_RP 3 /* plus infinity */ - -/* rounding precision */ -#define FPCR_PRECISION_X 0 /* long double */ -#define FPCR_PRECISION_S 1 /* double */ -#define FPCR_PRECISION_D 2 /* float */ - - -/* Flags to select the debugging output */ -#define PDECODE 0 -#define PEXECUTE 1 -#define PCONV 2 -#define PNORM 3 -#define PREGISTER 4 -#define PINSTR 5 -#define PUNIMPL 6 -#define PMOVEM 7 - -#define PMDECODE (1<<PDECODE) -#define PMEXECUTE (1<<PEXECUTE) -#define PMCONV (1<<PCONV) -#define PMNORM (1<<PNORM) -#define PMREGISTER (1<<PREGISTER) -#define PMINSTR (1<<PINSTR) -#define PMUNIMPL (1<<PUNIMPL) -#define PMMOVEM (1<<PMOVEM) - -#ifndef __ASSEMBLY__ - -#include <linux/kernel.h> -#include <linux/sched.h> - -union fp_mant64 { - unsigned long long m64; - unsigned long m32[2]; -}; - -union fp_mant128 { - unsigned long long m64[2]; - unsigned long m32[4]; -}; - -/* internal representation of extended fp numbers */ -struct fp_ext { - unsigned char lowmant; - unsigned char sign; - unsigned short exp; - union fp_mant64 mant; -}; - -/* C representation of FPU registers */ -/* NOTE: if you change this, you have to change the assembler offsets - below and the size in <asm/fpu.h>, too */ -struct fp_data { - struct fp_ext fpreg[8]; - unsigned int fpcr; - unsigned int fpsr; - unsigned int fpiar; - unsigned short prec; - unsigned short rnd; - struct fp_ext temp[2]; -}; - -#if FPU_EMU_DEBUG -extern unsigned int fp_debugprint; - -#define dprint(bit, fmt, args...) ({ \ - if (fp_debugprint & (1 << (bit))) \ - printk(fmt, ## args); \ -}) -#else -#define dprint(bit, fmt, args...) -#endif - -#define uprint(str) ({ \ - static int __count = 3; \ - \ - if (__count > 0) { \ - printk("You just hit an unimplemented " \ - "fpu instruction (%s)\n", str); \ - printk("Please report this to ....\n"); \ - __count--; \ - } \ -}) - -#define FPDATA ((struct fp_data *)current->thread.fp) - -#else /* __ASSEMBLY__ */ - -#define FPDATA %a2 - -/* offsets from the base register to the floating point data in the task struct */ -#define FPD_FPREG (TASK_THREAD+THREAD_FPREG+0) -#define FPD_FPCR (TASK_THREAD+THREAD_FPREG+96) -#define FPD_FPSR (TASK_THREAD+THREAD_FPREG+100) -#define FPD_FPIAR (TASK_THREAD+THREAD_FPREG+104) -#define FPD_PREC (TASK_THREAD+THREAD_FPREG+108) -#define FPD_RND (TASK_THREAD+THREAD_FPREG+110) -#define FPD_TEMPFP1 (TASK_THREAD+THREAD_FPREG+112) -#define FPD_TEMPFP2 (TASK_THREAD+THREAD_FPREG+124) -#define FPD_SIZEOF (TASK_THREAD+THREAD_FPREG+136) - -/* offsets on the stack to access saved registers, - * these are only used during instruction decoding - * where we always know how deep we're on the stack. - */ -#define FPS_DO (PT_D0) -#define FPS_D1 (PT_D1) -#define FPS_D2 (PT_D2) -#define FPS_A0 (PT_A0) -#define FPS_A1 (PT_A1) -#define FPS_A2 (PT_A2) -#define FPS_SR (PT_SR) -#define FPS_PC (PT_PC) -#define FPS_EA (PT_PC+6) -#define FPS_PC2 (PT_PC+10) - -.macro fp_get_fp_reg - lea (FPD_FPREG,FPDATA,%d0.w*4),%a0 - lea (%a0,%d0.w*8),%a0 -.endm - -/* Macros used to get/put the current program counter. - * 020/030 use a different stack frame then 040/060, for the - * 040/060 the return pc points already to the next location, - * so this only needs to be modified for jump instructions. - */ -.macro fp_get_pc dest - move.l (FPS_PC+4,%sp),\dest -.endm - -.macro fp_put_pc src,jump=0 - move.l \src,(FPS_PC+4,%sp) -.endm - -.macro fp_get_instr_data f,s,dest,label - getuser \f,%sp@(FPS_PC+4)@(0),\dest,\label,%sp@(FPS_PC+4) - addq.l #\s,%sp@(FPS_PC+4) -.endm - -.macro fp_get_instr_word dest,label,addr - fp_get_instr_data w,2,\dest,\label,\addr -.endm - -.macro fp_get_instr_long dest,label,addr - fp_get_instr_data l,4,\dest,\label,\addr -.endm - -/* These macros are used to read from/write to user space - * on error we jump to the fixup section, load the fault - * address into %a0 and jump to the exit. - * (derived from <asm/uaccess.h>) - */ -.macro getuser size,src,dest,label,addr -| printf ,"[\size<%08x]",1,\addr -.Lu1\@: moves\size \src,\dest - - .section .fixup,"ax" - .even -.Lu2\@: move.l \addr,%a0 - jra \label - .previous - - .section __ex_table,"a" - .align 4 - .long .Lu1\@,.Lu2\@ - .previous -.endm - -.macro putuser size,src,dest,label,addr -| printf ,"[\size>%08x]",1,\addr -.Lu1\@: moves\size \src,\dest -.Lu2\@: - - .section .fixup,"ax" - .even -.Lu3\@: move.l \addr,%a0 - jra \label - .previous - - .section __ex_table,"a" - .align 4 - .long .Lu1\@,.Lu3\@ - .long .Lu2\@,.Lu3\@ - .previous -.endm - - -.macro movestack nr,arg1,arg2,arg3,arg4,arg5 - .if \nr - movestack (\nr-1),\arg2,\arg3,\arg4,\arg5 - move.l \arg1,-(%sp) - .endif -.endm - -.macro printf bit=-1,string,nr=0,arg1,arg2,arg3,arg4,arg5 -#ifdef FPU_EMU_DEBUG - .data -.Lpdata\@: - .string "\string" - .previous - - movem.l %d0/%d1/%a0/%a1,-(%sp) - .if \bit+1 -#if 0 - moveq #\bit,%d0 - andw #7,%d0 - btst %d0,fp_debugprint+((31-\bit)/8) -#else - btst #\bit,fp_debugprint+((31-\bit)/8) -#endif - jeq .Lpskip\@ - .endif - movestack \nr,\arg1,\arg2,\arg3,\arg4,\arg5 - pea .Lpdata\@ - jsr printk - lea ((\nr+1)*4,%sp),%sp -.Lpskip\@: - movem.l (%sp)+,%d0/%d1/%a0/%a1 -#endif -.endm - -.macro printx bit,fp -#ifdef FPU_EMU_DEBUG - movem.l %d0/%a0,-(%sp) - lea \fp,%a0 -#if 0 - moveq #'+',%d0 - tst.w (%a0) - jeq .Lx1\@ - moveq #'-',%d0 -.Lx1\@: printf \bit," %c",1,%d0 - move.l (4,%a0),%d0 - bclr #31,%d0 - jne .Lx2\@ - printf \bit,"0." - jra .Lx3\@ -.Lx2\@: printf \bit,"1." -.Lx3\@: printf \bit,"%08x%08x",2,%d0,%a0@(8) - move.w (2,%a0),%d0 - ext.l %d0 - printf \bit,"E%04x",1,%d0 -#else - printf \bit," %08x%08x%08x",3,%a0@,%a0@(4),%a0@(8) -#endif - movem.l (%sp)+,%d0/%a0 -#endif -.endm - -.macro debug instr,args -#ifdef FPU_EMU_DEBUG - \instr \args -#endif -.endm - - -#endif /* __ASSEMBLY__ */ - -#endif /* _ASM_FRV_MATH_EMU_H */ - |
