From 5115f39c2034cb80a050d996a2a6343bce189628 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sun, 16 Nov 2008 20:07:11 -0800 Subject: sparc64: unify math-emu Move relavent files to sparc/math-emu and adjust path/include accordingly. Signed-off-by: Sam Ravnborg Signed-off-by: David S. Miller --- arch/sparc64/math-emu/math.c | 513 ------------------------------------------- 1 file changed, 513 deletions(-) delete mode 100644 arch/sparc64/math-emu/math.c (limited to 'arch/sparc64/math-emu/math.c') 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 -#include -#include - -#include -#include -#include - -#include "sfp-util.h" -#include -#include -#include -#include - -/* 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; -} -- cgit v1.2.3