sparc64: unify math-emu

Move relavent files to sparc/math-emu and
adjust path/include accordingly.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 513 deletions

diff --git a/arch/sparc64/math-emu/math.c b/arch/sparc64/math-emu/math.c
deleted file mode 100644
index add053e0f3b..00000000000
--- a/arch/sparc64/math-emu/math.c
+++ /dev/null
@@ -1,513 +0,0 @@
-/*
- * arch/sparc64/math-emu/math.c
- *
- * Copyright (C) 1997,1999 Jakub Jelinek (jj@ultra.linux.cz)
- * Copyright (C) 1999 David S. Miller (davem@redhat.com)
- *
- * Emulation routines originate from soft-fp package, which is part
- * of glibc and has appropriate copyrights in it.
- */
-
-#include <linux/types.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-
-#include <asm/fpumacro.h>
-#include <asm/ptrace.h>
-#include <asm/uaccess.h>
-
-#include "sfp-util.h"
-#include <math-emu/soft-fp.h>
-#include <math-emu/single.h>
-#include <math-emu/double.h>
-#include <math-emu/quad.h>
-
-/* QUAD - ftt == 3 */
-#define FMOVQ	0x003
-#define FNEGQ	0x007
-#define FABSQ	0x00b
-#define FSQRTQ	0x02b
-#define FADDQ	0x043
-#define FSUBQ	0x047
-#define FMULQ	0x04b
-#define FDIVQ	0x04f
-#define FDMULQ	0x06e
-#define FQTOX	0x083
-#define FXTOQ	0x08c
-#define FQTOS	0x0c7
-#define FQTOD	0x0cb
-#define FITOQ	0x0cc
-#define FSTOQ	0x0cd
-#define FDTOQ	0x0ce
-#define FQTOI	0x0d3
-/* SUBNORMAL - ftt == 2 */
-#define FSQRTS	0x029
-#define FSQRTD	0x02a
-#define FADDS	0x041
-#define FADDD	0x042
-#define FSUBS	0x045
-#define FSUBD	0x046
-#define FMULS	0x049
-#define FMULD	0x04a
-#define FDIVS	0x04d
-#define FDIVD	0x04e
-#define FSMULD	0x069
-#define FSTOX	0x081
-#define FDTOX	0x082
-#define FDTOS	0x0c6
-#define FSTOD	0x0c9
-#define FSTOI	0x0d1
-#define FDTOI	0x0d2
-#define FXTOS	0x084 /* Only Ultra-III generates this. */
-#define FXTOD	0x088 /* Only Ultra-III generates this. */
-#if 0	/* Optimized inline in sparc64/kernel/entry.S */
-#define FITOS	0x0c4 /* Only Ultra-III generates this. */
-#endif
-#define FITOD	0x0c8 /* Only Ultra-III generates this. */
-/* FPOP2 */
-#define FCMPQ	0x053
-#define FCMPEQ	0x057
-#define FMOVQ0	0x003
-#define FMOVQ1	0x043
-#define FMOVQ2	0x083
-#define FMOVQ3	0x0c3
-#define FMOVQI	0x103
-#define FMOVQX	0x183
-#define FMOVQZ	0x027
-#define FMOVQLE	0x047
-#define FMOVQLZ 0x067
-#define FMOVQNZ	0x0a7
-#define FMOVQGZ	0x0c7
-#define FMOVQGE 0x0e7
-
-#define FSR_TEM_SHIFT	23UL
-#define FSR_TEM_MASK	(0x1fUL << FSR_TEM_SHIFT)
-#define FSR_AEXC_SHIFT	5UL
-#define FSR_AEXC_MASK	(0x1fUL << FSR_AEXC_SHIFT)
-#define FSR_CEXC_SHIFT	0UL
-#define FSR_CEXC_MASK	(0x1fUL << FSR_CEXC_SHIFT)
-
-/* All routines returning an exception to raise should detect
- * such exceptions _before_ rounding to be consistent with
- * the behavior of the hardware in the implemented cases
- * (and thus with the recommendations in the V9 architecture
- * manual).
- *
- * We return 0 if a SIGFPE should be sent, 1 otherwise.
- */
-static inline int record_exception(struct pt_regs *regs, int eflag)
-{
-	u64 fsr = current_thread_info()->xfsr[0];
-	int would_trap;
-
-	/* Determine if this exception would have generated a trap. */
-	would_trap = (fsr & ((long)eflag << FSR_TEM_SHIFT)) != 0UL;
-
-	/* If trapping, we only want to signal one bit. */
-	if(would_trap != 0) {
-		eflag &= ((fsr & FSR_TEM_MASK) >> FSR_TEM_SHIFT);
-		if((eflag & (eflag - 1)) != 0) {
-			if(eflag & FP_EX_INVALID)
-				eflag = FP_EX_INVALID;
-			else if(eflag & FP_EX_OVERFLOW)
-				eflag = FP_EX_OVERFLOW;
-			else if(eflag & FP_EX_UNDERFLOW)
-				eflag = FP_EX_UNDERFLOW;
-			else if(eflag & FP_EX_DIVZERO)
-				eflag = FP_EX_DIVZERO;
-			else if(eflag & FP_EX_INEXACT)
-				eflag = FP_EX_INEXACT;
-		}
-	}
-
-	/* Set CEXC, here is the rule:
-	 *
-	 *    In general all FPU ops will set one and only one
-	 *    bit in the CEXC field, this is always the case
-	 *    when the IEEE exception trap is enabled in TEM.
-	 */
-	fsr &= ~(FSR_CEXC_MASK);
-	fsr |= ((long)eflag << FSR_CEXC_SHIFT);
-
-	/* Set the AEXC field, rule is:
-	 *
-	 *    If a trap would not be generated, the
-	 *    CEXC just generated is OR'd into the
-	 *    existing value of AEXC.
-	 */
-	if(would_trap == 0)
-		fsr |= ((long)eflag << FSR_AEXC_SHIFT);
-
-	/* If trapping, indicate fault trap type IEEE. */
-	if(would_trap != 0)
-		fsr |= (1UL << 14);
-
-	current_thread_info()->xfsr[0] = fsr;
-
-	/* If we will not trap, advance the program counter over
-	 * the instruction being handled.
-	 */
-	if(would_trap == 0) {
-		regs->tpc = regs->tnpc;
-		regs->tnpc += 4;
-	}
-
-	return (would_trap ? 0 : 1);
-}
-
-typedef union {
-	u32 s;
-	u64 d;
-	u64 q[2];
-} *argp;
-
-int do_mathemu(struct pt_regs *regs, struct fpustate *f)
-{
-	unsigned long pc = regs->tpc;
-	unsigned long tstate = regs->tstate;
-	u32 insn = 0;
-	int type = 0;
-	/* ftt tells which ftt it may happen in, r is rd, b is rs2 and a is rs1. The *u arg tells
-	   whether the argument should be packed/unpacked (0 - do not unpack/pack, 1 - unpack/pack)
-	   non-u args tells the size of the argument (0 - no argument, 1 - single, 2 - double, 3 - quad */
-#define TYPE(ftt, r, ru, b, bu, a, au) type = (au << 2) | (a << 0) | (bu << 5) | (b << 3) | (ru << 8) | (r << 6) | (ftt << 9)
-	int freg;
-	static u64 zero[2] = { 0L, 0L };
-	int flags;
-	FP_DECL_EX;
-	FP_DECL_S(SA); FP_DECL_S(SB); FP_DECL_S(SR);
-	FP_DECL_D(DA); FP_DECL_D(DB); FP_DECL_D(DR);
-	FP_DECL_Q(QA); FP_DECL_Q(QB); FP_DECL_Q(QR);
-	int IR;
-	long XR, xfsr;
-
-	if (tstate & TSTATE_PRIV)
-		die_if_kernel("unfinished/unimplemented FPop from kernel", regs);
-	if (test_thread_flag(TIF_32BIT))
-		pc = (u32)pc;
-	if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
-		if ((insn & 0xc1f80000) == 0x81a00000) /* FPOP1 */ {
-			switch ((insn >> 5) & 0x1ff) {
-			/* QUAD - ftt == 3 */
-			case FMOVQ:
-			case FNEGQ:
-			case FABSQ: TYPE(3,3,0,3,0,0,0); break;
-			case FSQRTQ: TYPE(3,3,1,3,1,0,0); break;
-			case FADDQ:
-			case FSUBQ:
-			case FMULQ:
-			case FDIVQ: TYPE(3,3,1,3,1,3,1); break;
-			case FDMULQ: TYPE(3,3,1,2,1,2,1); break;
-			case FQTOX: TYPE(3,2,0,3,1,0,0); break;
-			case FXTOQ: TYPE(3,3,1,2,0,0,0); break;
-			case FQTOS: TYPE(3,1,1,3,1,0,0); break;
-			case FQTOD: TYPE(3,2,1,3,1,0,0); break;
-			case FITOQ: TYPE(3,3,1,1,0,0,0); break;
-			case FSTOQ: TYPE(3,3,1,1,1,0,0); break;
-			case FDTOQ: TYPE(3,3,1,2,1,0,0); break;
-			case FQTOI: TYPE(3,1,0,3,1,0,0); break;
-
-			/* We can get either unimplemented or unfinished
-			 * for these cases.  Pre-Niagara systems generate
-			 * unfinished fpop for SUBNORMAL cases, and Niagara
-			 * always gives unimplemented fpop for fsqrt{s,d}.
-			 */
-			case FSQRTS: {
-				unsigned long x = current_thread_info()->xfsr[0];
-
-				x = (x >> 14) & 0xf;
-				TYPE(x,1,1,1,1,0,0);
-				break;
-			}
-
-			case FSQRTD: {
-				unsigned long x = current_thread_info()->xfsr[0];
-
-				x = (x >> 14) & 0xf;
-				TYPE(x,2,1,2,1,0,0);
-				break;
-			}
-
-			/* SUBNORMAL - ftt == 2 */
-			case FADDD:
-			case FSUBD:
-			case FMULD:
-			case FDIVD: TYPE(2,2,1,2,1,2,1); break;
-			case FADDS:
-			case FSUBS:
-			case FMULS:
-			case FDIVS: TYPE(2,1,1,1,1,1,1); break;
-			case FSMULD: TYPE(2,2,1,1,1,1,1); break;
-			case FSTOX: TYPE(2,2,0,1,1,0,0); break;
-			case FDTOX: TYPE(2,2,0,2,1,0,0); break;
-			case FDTOS: TYPE(2,1,1,2,1,0,0); break;
-			case FSTOD: TYPE(2,2,1,1,1,0,0); break;
-			case FSTOI: TYPE(2,1,0,1,1,0,0); break;
-			case FDTOI: TYPE(2,1,0,2,1,0,0); break;
-
-			/* Only Ultra-III generates these */
-			case FXTOS: TYPE(2,1,1,2,0,0,0); break;
-			case FXTOD: TYPE(2,2,1,2,0,0,0); break;
-#if 0			/* Optimized inline in sparc64/kernel/entry.S */
-			case FITOS: TYPE(2,1,1,1,0,0,0); break;
-#endif
-			case FITOD: TYPE(2,2,1,1,0,0,0); break;
-			}
-		}
-		else if ((insn & 0xc1f80000) == 0x81a80000) /* FPOP2 */ {
-			IR = 2;
-			switch ((insn >> 5) & 0x1ff) {
-			case FCMPQ: TYPE(3,0,0,3,1,3,1); break;
-			case FCMPEQ: TYPE(3,0,0,3,1,3,1); break;
-			/* Now the conditional fmovq support */
-			case FMOVQ0:
-			case FMOVQ1:
-			case FMOVQ2:
-			case FMOVQ3:
-				/* fmovq %fccX, %fY, %fZ */
-				if (!((insn >> 11) & 3))
-					XR = current_thread_info()->xfsr[0] >> 10;
-				else
-					XR = current_thread_info()->xfsr[0] >> (30 + ((insn >> 10) & 0x6));
-				XR &= 3;
-				IR = 0;
-				switch ((insn >> 14) & 0x7) {
-				/* case 0: IR = 0; break; */			/* Never */
-				case 1: if (XR) IR = 1; break;			/* Not Equal */
-				case 2: if (XR == 1 || XR == 2) IR = 1; break;	/* Less or Greater */
-				case 3: if (XR & 1) IR = 1; break;		/* Unordered or Less */
-				case 4: if (XR == 1) IR = 1; break;		/* Less */
-				case 5: if (XR & 2) IR = 1; break;		/* Unordered or Greater */
-				case 6: if (XR == 2) IR = 1; break;		/* Greater */
-				case 7: if (XR == 3) IR = 1; break;		/* Unordered */
-				}
-				if ((insn >> 14) & 8)
-					IR ^= 1;
-				break;
-			case FMOVQI:
-			case FMOVQX:
-				/* fmovq %[ix]cc, %fY, %fZ */
-				XR = regs->tstate >> 32;
-				if ((insn >> 5) & 0x80)
-					XR >>= 4;
-				XR &= 0xf;
-				IR = 0;
-				freg = ((XR >> 2) ^ XR) & 2;
-				switch ((insn >> 14) & 0x7) {
-				/* case 0: IR = 0; break; */			/* Never */
-				case 1: if (XR & 4) IR = 1; break;		/* Equal */
-				case 2: if ((XR & 4) || freg) IR = 1; break;	/* Less or Equal */
-				case 3: if (freg) IR = 1; break;		/* Less */
-				case 4: if (XR & 5) IR = 1; break;		/* Less or Equal Unsigned */
-				case 5: if (XR & 1) IR = 1; break;		/* Carry Set */
-				case 6: if (XR & 8) IR = 1; break;		/* Negative */
-				case 7: if (XR & 2) IR = 1; break;		/* Overflow Set */
-				}
-				if ((insn >> 14) & 8)
-					IR ^= 1;
-				break;
-			case FMOVQZ:
-			case FMOVQLE:
-			case FMOVQLZ:
-			case FMOVQNZ:
-			case FMOVQGZ:
-			case FMOVQGE:
-				freg = (insn >> 14) & 0x1f;
-				if (!freg)
-					XR = 0;
-				else if (freg < 16)
-					XR = regs->u_regs[freg];
-				else if (test_thread_flag(TIF_32BIT)) {
-					struct reg_window32 __user *win32;
-					flushw_user ();
-					win32 = (struct reg_window32 __user *)((unsigned long)((u32)regs->u_regs[UREG_FP]));
-					get_user(XR, &win32->locals[freg - 16]);
-				} else {
-					struct reg_window __user *win;
-					flushw_user ();
-					win = (struct reg_window __user *)(regs->u_regs[UREG_FP] + STACK_BIAS);
-					get_user(XR, &win->locals[freg - 16]);
-				}
-				IR = 0;
-				switch ((insn >> 10) & 3) {
-				case 1: if (!XR) IR = 1; break;			/* Register Zero */
-				case 2: if (XR <= 0) IR = 1; break;		/* Register Less Than or Equal to Zero */
-				case 3: if (XR < 0) IR = 1; break;		/* Register Less Than Zero */
-				}
-				if ((insn >> 10) & 4)
-					IR ^= 1;
-				break;
-			}
-			if (IR == 0) {
-				/* The fmov test was false. Do a nop instead */
-				current_thread_info()->xfsr[0] &= ~(FSR_CEXC_MASK);
-				regs->tpc = regs->tnpc;
-				regs->tnpc += 4;
-				return 1;
-			} else if (IR == 1) {
-				/* Change the instruction into plain fmovq */
-				insn = (insn & 0x3e00001f) | 0x81a00060;
-				TYPE(3,3,0,3,0,0,0); 
-			}
-		}
-	}
-	if (type) {
-		argp rs1 = NULL, rs2 = NULL, rd = NULL;
-		
-		freg = (current_thread_info()->xfsr[0] >> 14) & 0xf;
-		if (freg != (type >> 9))
-			goto err;
-		current_thread_info()->xfsr[0] &= ~0x1c000;
-		freg = ((insn >> 14) & 0x1f);
-		switch (type & 0x3) {
-		case 3: if (freg & 2) {
-				current_thread_info()->xfsr[0] |= (6 << 14) /* invalid_fp_register */;
-				goto err;
-			}
-		case 2: freg = ((freg & 1) << 5) | (freg & 0x1e);
-		case 1: rs1 = (argp)&f->regs[freg];
-			flags = (freg < 32) ? FPRS_DL : FPRS_DU; 
-			if (!(current_thread_info()->fpsaved[0] & flags))
-				rs1 = (argp)&zero;
-			break;
-		}
-		switch (type & 0x7) {
-		case 7: FP_UNPACK_QP (QA, rs1); break;
-		case 6: FP_UNPACK_DP (DA, rs1); break;
-		case 5: FP_UNPACK_SP (SA, rs1); break;
-		}
-		freg = (insn & 0x1f);
-		switch ((type >> 3) & 0x3) {
-		case 3: if (freg & 2) {
-				current_thread_info()->xfsr[0] |= (6 << 14) /* invalid_fp_register */;
-				goto err;
-			}
-		case 2: freg = ((freg & 1) << 5) | (freg & 0x1e);
-		case 1: rs2 = (argp)&f->regs[freg];
-			flags = (freg < 32) ? FPRS_DL : FPRS_DU; 
-			if (!(current_thread_info()->fpsaved[0] & flags))
-				rs2 = (argp)&zero;
-			break;
-		}
-		switch ((type >> 3) & 0x7) {
-		case 7: FP_UNPACK_QP (QB, rs2); break;
-		case 6: FP_UNPACK_DP (DB, rs2); break;
-		case 5: FP_UNPACK_SP (SB, rs2); break;
-		}
-		freg = ((insn >> 25) & 0x1f);
-		switch ((type >> 6) & 0x3) {
-		case 3: if (freg & 2) {
-				current_thread_info()->xfsr[0] |= (6 << 14) /* invalid_fp_register */;
-				goto err;
-			}
-		case 2: freg = ((freg & 1) << 5) | (freg & 0x1e);
-		case 1: rd = (argp)&f->regs[freg];
-			flags = (freg < 32) ? FPRS_DL : FPRS_DU; 
-			if (!(current_thread_info()->fpsaved[0] & FPRS_FEF)) {
-				current_thread_info()->fpsaved[0] = FPRS_FEF;
-				current_thread_info()->gsr[0] = 0;
-			}
-			if (!(current_thread_info()->fpsaved[0] & flags)) {
-				if (freg < 32)
-					memset(f->regs, 0, 32*sizeof(u32));
-				else
-					memset(f->regs+32, 0, 32*sizeof(u32));
-			}
-			current_thread_info()->fpsaved[0] |= flags;
-			break;
-		}
-		switch ((insn >> 5) & 0x1ff) {
-		/* + */
-		case FADDS: FP_ADD_S (SR, SA, SB); break;
-		case FADDD: FP_ADD_D (DR, DA, DB); break;
-		case FADDQ: FP_ADD_Q (QR, QA, QB); break;
-		/* - */
-		case FSUBS: FP_SUB_S (SR, SA, SB); break;
-		case FSUBD: FP_SUB_D (DR, DA, DB); break;
-		case FSUBQ: FP_SUB_Q (QR, QA, QB); break;
-		/* * */
-		case FMULS: FP_MUL_S (SR, SA, SB); break;
-		case FSMULD: FP_CONV (D, S, 1, 1, DA, SA);
-			     FP_CONV (D, S, 1, 1, DB, SB);
-		case FMULD: FP_MUL_D (DR, DA, DB); break;
-		case FDMULQ: FP_CONV (Q, D, 2, 1, QA, DA);
-			     FP_CONV (Q, D, 2, 1, QB, DB);
-		case FMULQ: FP_MUL_Q (QR, QA, QB); break;
-		/* / */
-		case FDIVS: FP_DIV_S (SR, SA, SB); break;
-		case FDIVD: FP_DIV_D (DR, DA, DB); break;
-		case FDIVQ: FP_DIV_Q (QR, QA, QB); break;
-		/* sqrt */
-		case FSQRTS: FP_SQRT_S (SR, SB); break;
-		case FSQRTD: FP_SQRT_D (DR, DB); break;
-		case FSQRTQ: FP_SQRT_Q (QR, QB); break;
-		/* mov */
-		case FMOVQ: rd->q[0] = rs2->q[0]; rd->q[1] = rs2->q[1]; break;
-		case FABSQ: rd->q[0] = rs2->q[0] & 0x7fffffffffffffffUL; rd->q[1] = rs2->q[1]; break;
-		case FNEGQ: rd->q[0] = rs2->q[0] ^ 0x8000000000000000UL; rd->q[1] = rs2->q[1]; break;
-		/* float to int */
-		case FSTOI: FP_TO_INT_S (IR, SB, 32, 1); break;
-		case FDTOI: FP_TO_INT_D (IR, DB, 32, 1); break;
-		case FQTOI: FP_TO_INT_Q (IR, QB, 32, 1); break;
-		case FSTOX: FP_TO_INT_S (XR, SB, 64, 1); break;
-		case FDTOX: FP_TO_INT_D (XR, DB, 64, 1); break;
-		case FQTOX: FP_TO_INT_Q (XR, QB, 64, 1); break;
-		/* int to float */
-		case FITOQ: IR = rs2->s; FP_FROM_INT_Q (QR, IR, 32, int); break;
-		case FXTOQ: XR = rs2->d; FP_FROM_INT_Q (QR, XR, 64, long); break;
-		/* Only Ultra-III generates these */
-		case FXTOS: XR = rs2->d; FP_FROM_INT_S (SR, XR, 64, long); break;
-		case FXTOD: XR = rs2->d; FP_FROM_INT_D (DR, XR, 64, long); break;
-#if 0		/* Optimized inline in sparc64/kernel/entry.S */
-		case FITOS: IR = rs2->s; FP_FROM_INT_S (SR, IR, 32, int); break;
-#endif
-		case FITOD: IR = rs2->s; FP_FROM_INT_D (DR, IR, 32, int); break;
-		/* float to float */
-		case FSTOD: FP_CONV (D, S, 1, 1, DR, SB); break;
-		case FSTOQ: FP_CONV (Q, S, 2, 1, QR, SB); break;
-		case FDTOQ: FP_CONV (Q, D, 2, 1, QR, DB); break;
-		case FDTOS: FP_CONV (S, D, 1, 1, SR, DB); break;
-		case FQTOS: FP_CONV (S, Q, 1, 2, SR, QB); break;
-		case FQTOD: FP_CONV (D, Q, 1, 2, DR, QB); break;
-		/* comparison */
-		case FCMPQ:
-		case FCMPEQ:
-			FP_CMP_Q(XR, QB, QA, 3);
-			if (XR == 3 &&
-			    (((insn >> 5) & 0x1ff) == FCMPEQ ||
-			     FP_ISSIGNAN_Q(QA) ||
-			     FP_ISSIGNAN_Q(QB)))
-				FP_SET_EXCEPTION (FP_EX_INVALID);
-		}
-		if (!FP_INHIBIT_RESULTS) {
-			switch ((type >> 6) & 0x7) {
-			case 0: xfsr = current_thread_info()->xfsr[0];
-				if (XR == -1) XR = 2;
-				switch (freg & 3) {
-				/* fcc0, 1, 2, 3 */
-				case 0: xfsr &= ~0xc00; xfsr |= (XR << 10); break;
-				case 1: xfsr &= ~0x300000000UL; xfsr |= (XR << 32); break;
-				case 2: xfsr &= ~0xc00000000UL; xfsr |= (XR << 34); break;
-				case 3: xfsr &= ~0x3000000000UL; xfsr |= (XR << 36); break;
-				}
-				current_thread_info()->xfsr[0] = xfsr;
-				break;
-			case 1: rd->s = IR; break;
-			case 2: rd->d = XR; break;
-			case 5: FP_PACK_SP (rd, SR); break;
-			case 6: FP_PACK_DP (rd, DR); break;
-			case 7: FP_PACK_QP (rd, QR); break;
-			}
-		}
-
-		if(_fex != 0)
-			return record_exception(regs, _fex);
-
-		/* Success and no exceptions detected. */
-		current_thread_info()->xfsr[0] &= ~(FSR_CEXC_MASK);
-		regs->tpc = regs->tnpc;
-		regs->tnpc += 4;
-		return 1;
-	}
-err:	return 0;
-}