diff options
Diffstat (limited to 'target-arm/op.c')
| -rw-r--r-- | target-arm/op.c | 731 |
1 files changed, 718 insertions, 13 deletions
diff --git a/target-arm/op.c b/target-arm/op.c index e8a536c1a..216944af5 100644 --- a/target-arm/op.c +++ b/target-arm/op.c @@ -2,7 +2,7 @@ * ARM micro operations * * Copyright (c) 2003 Fabrice Bellard - * Copyright (c) 2005 CodeSourcery, LLC + * Copyright (c) 2005-2007 CodeSourcery, LLC * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -101,11 +101,6 @@ void OPPROTO op_movl_T0_im(void) T0 = PARAM1; } -void OPPROTO op_movl_T0_T1(void) -{ - T0 = T1; -} - void OPPROTO op_movl_T1_im(void) { T1 = PARAM1; @@ -236,6 +231,11 @@ void OPPROTO op_bicl_T0_T1(void) T0 &= ~T1; } +void OPPROTO op_notl_T0(void) +{ + T0 = ~T0; +} + void OPPROTO op_notl_T1(void) { T1 = ~T1; @@ -351,6 +351,19 @@ void OPPROTO op_test_le(void) FORCE_RET(); } +void OPPROTO op_test_T0(void) +{ + if (T0) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} +void OPPROTO op_testn_T0(void) +{ + if (!T0) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + void OPPROTO op_goto_tb0(void) { GOTO_TB(op_goto_tb0, PARAM1, 0); @@ -368,7 +381,8 @@ void OPPROTO op_exit_tb(void) void OPPROTO op_movl_T0_cpsr(void) { - T0 = cpsr_read(env); + /* Execution state bits always read as zero. */ + T0 = cpsr_read(env) & ~CPSR_EXEC; FORCE_RET(); } @@ -438,6 +452,28 @@ void OPPROTO op_addq_lo_T0_T1(void) T0 = res; } +/* Dual 16-bit accumulate. */ +void OPPROTO op_addq_T0_T1_dual(void) +{ + uint64_t res; + res = ((uint64_t)(env->regs[PARAM2]) << 32) | (env->regs[PARAM1]); + res += (int32_t)T0; + res += (int32_t)T1; + env->regs[PARAM1] = (uint32_t)res; + env->regs[PARAM2] = res >> 32; +} + +/* Dual 16-bit subtract accumulate. */ +void OPPROTO op_subq_T0_T1_dual(void) +{ + uint64_t res; + res = ((uint64_t)(env->regs[PARAM2]) << 32) | (env->regs[PARAM1]); + res += (int32_t)T0; + res -= (int32_t)T1; + env->regs[PARAM1] = (uint32_t)res; + env->regs[PARAM2] = res >> 32; +} + void OPPROTO op_logicq_cc(void) { env->NZF = (T1 & 0x80000000) | ((T0 | T1) != 0); @@ -455,8 +491,21 @@ void OPPROTO op_logicq_cc(void) #include "op_mem.h" #endif +void OPPROTO op_clrex(void) +{ + cpu_lock(); + helper_clrex(env); + cpu_unlock(); +} + /* shifts */ +/* Used by NEON. */ +void OPPROTO op_shll_T0_im(void) +{ + T1 = T1 << PARAM1; +} + /* T1 based */ void OPPROTO op_shll_T1_im(void) @@ -813,8 +862,39 @@ void OPPROTO op_double_T1_saturate(void) FORCE_RET(); } -/* thumb shift by immediate */ -void OPPROTO op_shll_T0_im_thumb(void) +/* Unsigned saturating arithmetic for NEON. */ +void OPPROTO op_addl_T0_T1_usaturate(void) +{ + uint32_t res; + + res = T0 + T1; + if (res < T0) { + env->QF = 1; + T0 = 0xffffffff; + } else { + T0 = res; + } + + FORCE_RET(); +} + +void OPPROTO op_subl_T0_T1_usaturate(void) +{ + uint32_t res; + + res = T0 - T1; + if (res > T0) { + env->QF = 1; + T0 = 0; + } else { + T0 = res; + } + + FORCE_RET(); +} + +/* Thumb shift by immediate */ +void OPPROTO op_shll_T0_im_thumb_cc(void) { int shift; shift = PARAM1; @@ -826,7 +906,13 @@ void OPPROTO op_shll_T0_im_thumb(void) FORCE_RET(); } -void OPPROTO op_shrl_T0_im_thumb(void) +void OPPROTO op_shll_T0_im_thumb(void) +{ + T0 = T0 << PARAM1; + FORCE_RET(); +} + +void OPPROTO op_shrl_T0_im_thumb_cc(void) { int shift; @@ -842,7 +928,20 @@ void OPPROTO op_shrl_T0_im_thumb(void) FORCE_RET(); } -void OPPROTO op_sarl_T0_im_thumb(void) +void OPPROTO op_shrl_T0_im_thumb(void) +{ + int shift; + + shift = PARAM1; + if (shift == 0) { + T0 = 0; + } else { + T0 = T0 >> shift; + } + FORCE_RET(); +} + +void OPPROTO op_sarl_T0_im_thumb_cc(void) { int shift; @@ -858,6 +957,19 @@ void OPPROTO op_sarl_T0_im_thumb(void) FORCE_RET(); } +void OPPROTO op_sarl_T0_im_thumb(void) +{ + int shift; + + shift = PARAM1; + if (shift == 0) { + env->CF = T0 & 1; + } else { + T0 = ((int32_t)T0) >> shift; + } + FORCE_RET(); +} + /* exceptions */ void OPPROTO op_swi(void) @@ -891,6 +1003,12 @@ void OPPROTO op_bkpt(void) cpu_loop_exit(); } +void OPPROTO op_exception_exit(void) +{ + env->exception_index = EXCP_EXCEPTION_EXIT; + cpu_loop_exit(); +} + /* VFP support. We follow the convention used for VFP instrunctions: Single precition routines have a "s" suffix, double precision a "d" suffix. */ @@ -982,6 +1100,28 @@ static inline uint32_t vfp_stoi(float32 s) return v.i; } +static inline float64 vfp_itod(uint64_t i) +{ + union { + uint64_t i; + float64 d; + } v; + + v.i = i; + return v.d; +} + +static inline uint64_t vfp_dtoi(float64 d) +{ + union { + uint64_t i; + float64 d; + } v; + + v.d = d; + return v.i; +} + /* Integer to float conversion. */ VFP_OP(uito, s) { @@ -1056,6 +1196,32 @@ VFP_OP(fcvts, d) FT0s = float64_to_float32(FT0d, &env->vfp.fp_status); } +/* VFP3 fixed point conversion. */ +#define VFP_CONV_FIX(name, p, ftype, itype, sign) \ +VFP_OP(name##to, p) \ +{ \ + ftype tmp; \ + tmp = sign##int32_to_##ftype ((itype)vfp_##p##toi(FT0##p), \ + &env->vfp.fp_status); \ + FT0##p = ftype##_scalbn(tmp, PARAM1, &env->vfp.fp_status); \ +} \ +VFP_OP(to##name, p) \ +{ \ + ftype tmp; \ + tmp = ftype##_scalbn(FT0##p, PARAM1, &env->vfp.fp_status); \ + FT0##p = vfp_ito##p((itype)ftype##_to_##sign##int32_round_to_zero(tmp, \ + &env->vfp.fp_status)); \ +} + +VFP_CONV_FIX(sh, d, float64, int16, ) +VFP_CONV_FIX(sl, d, float64, int32, ) +VFP_CONV_FIX(uh, d, float64, uint16, u) +VFP_CONV_FIX(ul, d, float64, uint32, u) +VFP_CONV_FIX(sh, s, float32, int16, ) +VFP_CONV_FIX(sl, s, float32, int32, ) +VFP_CONV_FIX(uh, s, float32, uint16, u) +VFP_CONV_FIX(ul, s, float32, uint32, u) + /* Get and Put values from registers. */ VFP_OP(getreg_F0, d) { @@ -1142,6 +1308,20 @@ void OPPROTO op_vfp_mdrr(void) FT0d = u.d; } +/* Load immediate. PARAM1 is the 32 most significant bits of the value. */ +void OPPROTO op_vfp_fconstd(void) +{ + CPU_DoubleU u; + u.l.upper = PARAM1; + u.l.lower = 0; + FT0d = u.d; +} + +void OPPROTO op_vfp_fconsts(void) +{ + FT0s = vfp_itos(PARAM1); +} + /* Copy the most significant bit of T0 to all bits of T1. */ void OPPROTO op_signbit_T1_T0(void) { @@ -1204,9 +1384,9 @@ void OPPROTO op_movl_user_T0(void) FORCE_RET(); } -void OPPROTO op_movl_T2_T0(void) +void OPPROTO op_movl_T0_T1(void) { - T2 = T0; + T0 = T1; } void OPPROTO op_movl_T0_T2(void) @@ -1214,5 +1394,530 @@ void OPPROTO op_movl_T0_T2(void) T0 = T2; } +void OPPROTO op_movl_T1_T0(void) +{ + T1 = T0; +} + +void OPPROTO op_movl_T1_T2(void) +{ + T1 = T2; +} + +void OPPROTO op_movl_T2_T0(void) +{ + T2 = T0; +} + +/* ARMv6 Media instructions. */ + +/* Note that signed overflow is undefined in C. The following routines are + careful to use unsigned types where modulo arithmetic is required. + Failure to do so _will_ break on newer gcc. */ + +/* Signed saturating arithmetic. */ + +/* Perform 16-bit signed satruating addition. */ +static inline uint16_t add16_sat(uint16_t a, uint16_t b) +{ + uint16_t res; + + res = a + b; + if (((res ^ a) & 0x8000) && !((a ^ b) & 0x8000)) { + if (a & 0x8000) + res = 0x8000; + else + res = 0x7fff; + } + return res; +} + +/* Perform 8-bit signed satruating addition. */ +static inline uint8_t add8_sat(uint8_t a, uint8_t b) +{ + uint8_t res; + + res = a + b; + if (((res ^ a) & 0x80) && !((a ^ b) & 0x80)) { + if (a & 0x80) + res = 0x80; + else + res = 0x7f; + } + return res; +} + +/* Perform 16-bit signed satruating subtraction. */ +static inline uint16_t sub16_sat(uint16_t a, uint16_t b) +{ + uint16_t res; + + res = a - b; + if (((res ^ a) & 0x8000) && ((a ^ b) & 0x8000)) { + if (a & 0x8000) + res = 0x8000; + else + res = 0x7fff; + } + return res; +} + +/* Perform 8-bit signed satruating subtraction. */ +static inline uint8_t sub8_sat(uint8_t a, uint8_t b) +{ + uint8_t res; + + res = a - b; + if (((res ^ a) & 0x80) && ((a ^ b) & 0x80)) { + if (a & 0x80) + res = 0x80; + else + res = 0x7f; + } + return res; +} + +#define ADD16(a, b, n) RESULT(add16_sat(a, b), n, 16); +#define SUB16(a, b, n) RESULT(sub16_sat(a, b), n, 16); +#define ADD8(a, b, n) RESULT(add8_sat(a, b), n, 8); +#define SUB8(a, b, n) RESULT(sub8_sat(a, b), n, 8); +#define PFX q + +#include "op_addsub.h" + +/* Unsigned saturating arithmetic. */ +static inline uint16_t add16_usat(uint16_t a, uint8_t b) +{ + uint16_t res; + res = a + b; + if (res < a) + res = 0xffff; + return res; +} + +static inline uint16_t sub16_usat(uint16_t a, uint8_t b) +{ + if (a < b) + return a - b; + else + return 0; +} + +static inline uint8_t add8_usat(uint8_t a, uint8_t b) +{ + uint8_t res; + res = a + b; + if (res < a) + res = 0xff; + return res; +} + +static inline uint8_t sub8_usat(uint8_t a, uint8_t b) +{ + if (a < b) + return a - b; + else + return 0; +} + +#define ADD16(a, b, n) RESULT(add16_usat(a, b), n, 16); +#define SUB16(a, b, n) RESULT(sub16_usat(a, b), n, 16); +#define ADD8(a, b, n) RESULT(add8_usat(a, b), n, 8); +#define SUB8(a, b, n) RESULT(sub8_usat(a, b), n, 8); +#define PFX uq + +#include "op_addsub.h" + +/* Signed modulo arithmetic. */ +#define SARITH16(a, b, n, op) do { \ + int32_t sum; \ + sum = (int16_t)((uint16_t)(a) op (uint16_t)(b)); \ + RESULT(sum, n, 16); \ + if (sum >= 0) \ + ge |= 3 << (n * 2); \ + } while(0) + +#define SARITH8(a, b, n, op) do { \ + int32_t sum; \ + sum = (int8_t)((uint8_t)(a) op (uint8_t)(b)); \ + RESULT(sum, n, 8); \ + if (sum >= 0) \ + ge |= 1 << n; \ + } while(0) + + +#define ADD16(a, b, n) SARITH16(a, b, n, +) +#define SUB16(a, b, n) SARITH16(a, b, n, -) +#define ADD8(a, b, n) SARITH8(a, b, n, +) +#define SUB8(a, b, n) SARITH8(a, b, n, -) +#define PFX s +#define ARITH_GE + +#include "op_addsub.h" + +/* Unsigned modulo arithmetic. */ +#define ADD16(a, b, n) do { \ + uint32_t sum; \ + sum = (uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b); \ + RESULT(sum, n, 16); \ + if ((sum >> 16) == 0) \ + ge |= 3 << (n * 2); \ + } while(0) + +#define ADD8(a, b, n) do { \ + uint32_t sum; \ + sum = (uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b); \ + RESULT(sum, n, 8); \ + if ((sum >> 8) == 0) \ + ge |= 3 << (n * 2); \ + } while(0) + +#define SUB16(a, b, n) do { \ + uint32_t sum; \ + sum = (uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b); \ + RESULT(sum, n, 16); \ + if ((sum >> 16) == 0) \ + ge |= 3 << (n * 2); \ + } while(0) + +#define SUB8(a, b, n) do { \ + uint32_t sum; \ + sum = (uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b); \ + RESULT(sum, n, 8); \ + if ((sum >> 8) == 0) \ + ge |= 3 << (n * 2); \ + } while(0) + +#define PFX u +#define ARITH_GE + +#include "op_addsub.h" + +/* Halved signed arithmetic. */ +#define ADD16(a, b, n) \ + RESULT(((int32_t)(int16_t)(a) + (int32_t)(int16_t)(b)) >> 1, n, 16) +#define SUB16(a, b, n) \ + RESULT(((int32_t)(int16_t)(a) - (int32_t)(int16_t)(b)) >> 1, n, 16) +#define ADD8(a, b, n) \ + RESULT(((int32_t)(int8_t)(a) + (int32_t)(int8_t)(b)) >> 1, n, 8) +#define SUB8(a, b, n) \ + RESULT(((int32_t)(int8_t)(a) - (int32_t)(int8_t)(b)) >> 1, n, 8) +#define PFX sh + +#include "op_addsub.h" + +/* Halved unsigned arithmetic. */ +#define ADD16(a, b, n) \ + RESULT(((uint32_t)(uint16_t)(a) + (uint32_t)(uint16_t)(b)) >> 1, n, 16) +#define SUB16(a, b, n) \ + RESULT(((uint32_t)(uint16_t)(a) - (uint32_t)(uint16_t)(b)) >> 1, n, 16) +#define ADD8(a, b, n) \ + RESULT(((uint32_t)(uint8_t)(a) + (uint32_t)(uint8_t)(b)) >> 1, n, 8) +#define SUB8(a, b, n) \ + RESULT(((uint32_t)(uint8_t)(a) - (uint32_t)(uint8_t)(b)) >> 1, n, 8) +#define PFX uh + +#include "op_addsub.h" + +void OPPROTO op_pkhtb_T0_T1(void) +{ + T0 = (T0 & 0xffff0000) | (T1 & 0xffff); +} + +void OPPROTO op_pkhbt_T0_T1(void) +{ + T0 = (T0 & 0xffff) | (T1 & 0xffff0000); +} +void OPPROTO op_rev_T0(void) +{ + T0 = ((T0 & 0xff000000) >> 24) + | ((T0 & 0x00ff0000) >> 8) + | ((T0 & 0x0000ff00) << 8) + | ((T0 & 0x000000ff) << 24); +} + +void OPPROTO op_revh_T0(void) +{ + T0 = (T0 >> 16) | (T0 << 16); +} + +void OPPROTO op_rev16_T0(void) +{ + T0 = ((T0 & 0xff000000) >> 8) + | ((T0 & 0x00ff0000) << 8) + | ((T0 & 0x0000ff00) >> 8) + | ((T0 & 0x000000ff) << 8); +} + +void OPPROTO op_revsh_T0(void) +{ + T0 = (int16_t)( ((T0 & 0x0000ff00) >> 8) + | ((T0 & 0x000000ff) << 8)); +} + +void OPPROTO op_rbit_T0(void) +{ + T0 = ((T0 & 0xff000000) >> 24) + | ((T0 & 0x00ff0000) >> 8) + | ((T0 & 0x0000ff00) << 8) + | ((T0 & 0x000000ff) << 24); + T0 = ((T0 & 0xf0f0f0f0) >> 4) + | ((T0 & 0x0f0f0f0f) << 4); + T0 = ((T0 & 0x88888888) >> 3) + | ((T0 & 0x44444444) >> 1) + | ((T0 & 0x22222222) << 1) + | ((T0 & 0x11111111) << 3); +} + +/* Swap low and high halfwords. */ +void OPPROTO op_swap_half_T1(void) +{ + T1 = (T1 >> 16) | (T1 << 16); + FORCE_RET(); +} + +/* Dual 16-bit signed multiply. */ +void OPPROTO op_mul_dual_T0_T1(void) +{ + int32_t low; + int32_t high; + low = (int32_t)(int16_t)T0 * (int32_t)(int16_t)T1; + high = (((int32_t)T0) >> 16) * (((int32_t)T1) >> 16); + T0 = low; + T1 = high; +} + +void OPPROTO op_sel_T0_T1(void) +{ + uint32_t mask; + uint32_t flags; + + flags = env->GE; + mask = 0; + if (flags & 1) + mask |= 0xff; + if (flags & 2) + mask |= 0xff00; + if (flags & 4) + mask |= 0xff0000; + if (flags & 8) + mask |= 0xff000000; + T0 = (T0 & mask) | (T1 & ~mask); + FORCE_RET(); +} + +void OPPROTO op_roundqd_T0_T1(void) +{ + T0 = T1 + ((uint32_t)T0 >> 31); +} + +/* Signed saturation. */ +static inline uint32_t do_ssat(int32_t val, int shift) +{ + int32_t top; + uint32_t mask; + + shift = PARAM1; + top = val >> shift; + mask = (1u << shift) - 1; + if (top > 0) { + env->QF = 1; + return mask; + } else if (top < -1) { + env->QF = 1; + return ~mask; + } + return val; +} + +/* Unsigned saturation. */ +static inline uint32_t do_usat(int32_t val, int shift) +{ + uint32_t max; + + shift = PARAM1; + max = (1u << shift) - 1; + if (val < 0) { + env->QF = 1; + return 0; + } else if (val > max) { + env->QF = 1; + return max; + } + return val; +} + +/* Signed saturate. */ +void OPPROTO op_ssat_T1(void) +{ + T0 = do_ssat(T0, PARAM1); + FORCE_RET(); +} + +/* Dual halfword signed saturate. */ +void OPPROTO op_ssat16_T1(void) +{ + uint32_t res; + + res = (uint16_t)do_ssat((int16_t)T0, PARAM1); + res |= do_ssat(((int32_t)T0) >> 16, PARAM1) << 16; + T0 = res; + FORCE_RET(); +} + +/* Unsigned saturate. */ +void OPPROTO op_usat_T1(void) +{ + T0 = do_usat(T0, PARAM1); + FORCE_RET(); +} + +/* Dual halfword unsigned saturate. */ +void OPPROTO op_usat16_T1(void) +{ + uint32_t res; + + res = (uint16_t)do_usat((int16_t)T0, PARAM1); + res |= do_usat(((int32_t)T0) >> 16, PARAM1) << 16; + T0 = res; + FORCE_RET(); +} + +/* Dual 16-bit add. */ +void OPPROTO op_add16_T1_T2(void) +{ + uint32_t mask; + mask = (T0 & T1) & 0x8000; + T0 ^= ~0x8000; + T1 ^= ~0x8000; + T0 = (T0 + T1) ^ mask; +} + +static inline uint8_t do_usad(uint8_t a, uint8_t b) +{ + if (a > b) + return a - b; + else + return b - a; +} + +/* Unsigned sum of absolute byte differences. */ +void OPPROTO op_usad8_T0_T1(void) +{ + uint32_t sum; + sum = do_usad(T0, T1); + sum += do_usad(T0 >> 8, T1 >> 8); + sum += do_usad(T0 >> 16, T1 >>16); + sum += do_usad(T0 >> 24, T1 >> 24); + T0 = sum; +} + +/* Thumb-2 instructions. */ + +/* Insert T1 into T0. Result goes in T1. */ +void OPPROTO op_bfi_T1_T0(void) +{ + int shift = PARAM1; + uint32_t mask = PARAM2; + uint32_t bits; + + bits = (T1 << shift) & mask; + T1 = (T0 & ~mask) | bits; +} + +/* Unsigned bitfield extract. */ +void OPPROTO op_ubfx_T1(void) +{ + uint32_t shift = PARAM1; + uint32_t mask = PARAM2; + + T1 >>= shift; + T1 &= mask; +} + +/* Signed bitfield extract. */ +void OPPROTO op_sbfx_T1(void) +{ + uint32_t shift = PARAM1; + uint32_t width = PARAM2; + int32_t val; + + val = T1 << (32 - (shift + width)); + T1 = val >> (32 - width); +} + +void OPPROTO op_movtop_T0_im(void) +{ + T0 = (T0 & 0xffff) | PARAM1; +} + +/* Used by table branch instructions. */ +void OPPROTO op_jmp_T0_im(void) +{ + env->regs[15] = PARAM1 + (T0 << 1); +} + +void OPPROTO op_set_condexec(void) +{ + env->condexec_bits = PARAM1; +} + +void OPPROTO op_sdivl_T0_T1(void) +{ + int32_t num; + int32_t den; + num = T0; + den = T1; + if (den == 0) + T0 = 0; + else + T0 = num / den; + FORCE_RET(); +} + +void OPPROTO op_udivl_T0_T1(void) +{ + uint32_t num; + uint32_t den; + num = T0; + den = T1; + if (den == 0) + T0 = 0; + else + T0 = num / den; + FORCE_RET(); +} + +void OPPROTO op_movl_T1_r13_banked(void) +{ + T1 = helper_get_r13_banked(env, PARAM1); +} + +void OPPROTO op_movl_r13_T1_banked(void) +{ + helper_set_r13_banked(env, PARAM1, T1); +} + +void OPPROTO op_v7m_mrs_T0(void) +{ + T0 = helper_v7m_mrs(env, PARAM1); +} + +void OPPROTO op_v7m_msr_T0(void) +{ + helper_v7m_msr(env, PARAM1, T0); +} + +void OPPROTO op_movl_T0_sp(void) +{ + if (PARAM1 == env->v7m.current_sp) + T0 = env->regs[13]; + else + T0 = env->v7m.other_sp; + FORCE_RET(); +} + +#include "op_neon.h" + /* iwMMXt support */ #include "op_iwmmxt.c" |