cp1emu.c File Reference

#include <linux/sched.h>
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/perf_event.h>
#include <asm/inst.h>
#include <asm/bootinfo.h>
#include <asm/processor.h>
#include <asm/ptrace.h>
#include <asm/signal.h>
#include <asm/mipsregs.h>
#include <asm/fpu_emulator.h>
#include <asm/uaccess.h>
#include <asm/branch.h>
#include "ieee754.h"

Go to the source code of this file.

Macros
#define	__mips   4
#define	FPCREG_RID   0 /* $0 = revision id */
#define	FPCREG_CSR   31 /* $31 = csr */
#define	modeindex(v)   ((v) & FPU_CSR_RM)
#define	SIFROMREG(si, x)
#define	SITOREG(si, x)
#define	DIFROMREG(di, x)   ((di) = ctx->fpr[x & ~(cop1_64bit(xcp) == 0)])
#define	DITOREG(di, x)   (ctx->fpr[x & ~(cop1_64bit(xcp) == 0)] = (di))
#define	SPFROMREG(sp, x)   SIFROMREG((sp).bits, x)
#define	SPTOREG(sp, x)   SITOREG((sp).bits, x)
#define	DPFROMREG(dp, x)   DIFROMREG((dp).bits, x)
#define	DPTOREG(dp, x)   DITOREG((dp).bits, x)
#define	DEF3OP(name, p, f1, f2, f3)

Functions
	DEF3OP (madd, sp, ieee754sp_mul, ieee754sp_add,)
	DEF3OP (msub, sp, ieee754sp_mul, ieee754sp_sub,)
	DEF3OP (nmadd, sp, ieee754sp_mul, ieee754sp_add, ieee754sp_neg)
	DEF3OP (nmsub, sp, ieee754sp_mul, ieee754sp_sub, ieee754sp_neg)
	DEF3OP (madd, dp, ieee754dp_mul, ieee754dp_add,)
	DEF3OP (msub, dp, ieee754dp_mul, ieee754dp_sub,)
	DEF3OP (nmadd, dp, ieee754dp_mul, ieee754dp_add, ieee754dp_neg)
	DEF3OP (nmsub, dp, ieee754dp_mul, ieee754dp_sub, ieee754dp_neg)
int	fpu_emulator_cop1Handler (struct pt_regs *xcp, struct mips_fpu_struct *ctx, int has_fpu, void *__user *fault_addr)

Macro Definition Documentation

#define __mips   4

Definition at line 58 of file cp1emu.c.

#define DEF3OP	(		name,
			p,
			f1,
			f2,
			f3
	)

Value:

static ieee754##p fpemu_##p##_##name(ieee754##p r, ieee754##p s, \
    ieee754##p t) \
{ \
	struct _ieee754_csr ieee754_csr_save; \
	s = f1(s, t); \
    ieee754_csr_save = ieee754_csr; \
	s = f2(s, r); \
    ieee754_csr_save.cx |= ieee754_csr.cx; \
    ieee754_csr_save.sx |= ieee754_csr.sx; \
	s = f3(s); \
    ieee754_csr.cx |= ieee754_csr_save.cx; \
    ieee754_csr.sx |= ieee754_csr_save.sx; \
    return s; \
}

Definition at line 604 of file cp1emu.c.

#define DIFROMREG	(		di,
			x
	)		((di) = ctx->fpr[x & ~(cop1_64bit(xcp) == 0)])

Definition at line 198 of file cp1emu.c.

#define DITOREG	(		di,
			x
	)		(ctx->fpr[x & ~(cop1_64bit(xcp) == 0)] = (di))

Definition at line 199 of file cp1emu.c.

#define DPFROMREG	(		dp,
			x
	)		DIFROMREG((dp).bits, x)

Definition at line 203 of file cp1emu.c.

#define DPTOREG	(		dp,
			x
	)		DITOREG((dp).bits, x)

Definition at line 204 of file cp1emu.c.

#define FPCREG_CSR   31 /* $31 = csr */

Definition at line 79 of file cp1emu.c.

#define FPCREG_RID   0 /* $0 = revision id */

Definition at line 78 of file cp1emu.c.

#define modeindex

(

v

)

((v) & FPU_CSR_RM)

Definition at line 82 of file cp1emu.c.

#define SIFROMREG	(		si,
			x
	)

Value:

((si) = cop1_64bit(xcp) || !(x & 1) ? \
            (int)ctx->fpr[x] : (int)(ctx->fpr[x & ~1] >> 32))

Definition at line 190 of file cp1emu.c.

#define SITOREG	(		si,
			x
	)

Value:

(ctx->fpr[x & ~(cop1_64bit(xcp) == 0)] = \
            cop1_64bit(xcp) || !(x & 1) ? \
            ctx->fpr[x & ~1] >> 32 << 32 | (u32)(si) : \
            ctx->fpr[x & ~1] << 32 >> 32 | (u64)(si) << 32)

Definition at line 193 of file cp1emu.c.

#define SPFROMREG	(		sp,
			x
	)		SIFROMREG((sp).bits, x)

Definition at line 201 of file cp1emu.c.

#define SPTOREG	(		sp,
			x
	)		SITOREG((sp).bits, x)

Definition at line 202 of file cp1emu.c.

Function Documentation

DEF3OP	(	madd	,
		sp	,
		ieee754sp_mul	,
		ieee754sp_add
	)

DEF3OP	(	msub	,
		sp	,
		ieee754sp_mul	,
		ieee754sp_sub
	)

DEF3OP	(	nmadd	,
		sp	,
		ieee754sp_mul	,
		ieee754sp_add	,
		ieee754sp_neg
	)

DEF3OP	(	nmsub	,
		sp	,
		ieee754sp_mul	,
		ieee754sp_sub	,
		ieee754sp_neg
	)

DEF3OP	(	madd	,
		dp	,
		ieee754dp_mul	,
		ieee754dp_add
	)

DEF3OP	(	msub	,
		dp	,
		ieee754dp_mul	,
		ieee754dp_sub
	)

DEF3OP	(	nmadd	,
		dp	,
		ieee754dp_mul	,
		ieee754dp_add	,
		ieee754dp_neg
	)

DEF3OP	(	nmsub	,
		dp	,
		ieee754dp_mul	,
		ieee754dp_sub	,
		ieee754dp_neg
	)

int fpu_emulator_cop1Handler	(	struct pt_regs *	xcp,
		struct mips_fpu_struct *	ctx,
		int	has_fpu,
		void *__user *	fault_addr
	)

Definition at line 1311 of file cp1emu.c.