diff options
Diffstat (limited to 'target-i386/ops_template.h')
| -rw-r--r-- | target-i386/ops_template.h | 597 |
1 files changed, 597 insertions, 0 deletions
diff --git a/target-i386/ops_template.h b/target-i386/ops_template.h new file mode 100644 index 0000000..373b77a --- /dev/null +++ b/target-i386/ops_template.h @@ -0,0 +1,597 @@ +/* + * i386 micro operations (included several times to generate + * different operand sizes) + * + * Copyright (c) 2003 Fabrice Bellard + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#define DATA_BITS (1 << (3 + SHIFT)) +#define SHIFT_MASK (DATA_BITS - 1) +#define SIGN_MASK (((target_ulong)1) << (DATA_BITS - 1)) +#if DATA_BITS <= 32 +#define SHIFT1_MASK 0x1f +#else +#define SHIFT1_MASK 0x3f +#endif + +#if DATA_BITS == 8 +#define SUFFIX b +#define DATA_TYPE uint8_t +#define DATA_STYPE int8_t +#define DATA_MASK 0xff +#elif DATA_BITS == 16 +#define SUFFIX w +#define DATA_TYPE uint16_t +#define DATA_STYPE int16_t +#define DATA_MASK 0xffff +#elif DATA_BITS == 32 +#define SUFFIX l +#define DATA_TYPE uint32_t +#define DATA_STYPE int32_t +#define DATA_MASK 0xffffffff +#elif DATA_BITS == 64 +#define SUFFIX q +#define DATA_TYPE uint64_t +#define DATA_STYPE int64_t +#define DATA_MASK 0xffffffffffffffffULL +#else +#error unhandled operand size +#endif + +/* dynamic flags computation */ + +static int glue(compute_all_add, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + target_long src1, src2; + src1 = CC_SRC; + src2 = CC_DST - CC_SRC; + cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1; + pf = parity_table[(uint8_t)CC_DST]; + af = (CC_DST ^ src1 ^ src2) & 0x10; + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O; + return cf | pf | af | zf | sf | of; +} + +static int glue(compute_c_add, SUFFIX)(void) +{ + int cf; + target_long src1; + src1 = CC_SRC; + cf = (DATA_TYPE)CC_DST < (DATA_TYPE)src1; + return cf; +} + +static int glue(compute_all_adc, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + target_long src1, src2; + src1 = CC_SRC; + src2 = CC_DST - CC_SRC - 1; + cf = (DATA_TYPE)CC_DST <= (DATA_TYPE)src1; + pf = parity_table[(uint8_t)CC_DST]; + af = (CC_DST ^ src1 ^ src2) & 0x10; + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + of = lshift((src1 ^ src2 ^ -1) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O; + return cf | pf | af | zf | sf | of; +} + +static int glue(compute_c_adc, SUFFIX)(void) +{ + int cf; + target_long src1; + src1 = CC_SRC; + cf = (DATA_TYPE)CC_DST <= (DATA_TYPE)src1; + return cf; +} + +static int glue(compute_all_sub, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + cf = (DATA_TYPE)src1 < (DATA_TYPE)src2; + pf = parity_table[(uint8_t)CC_DST]; + af = (CC_DST ^ src1 ^ src2) & 0x10; + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + of = lshift((src1 ^ src2) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O; + return cf | pf | af | zf | sf | of; +} + +static int glue(compute_c_sub, SUFFIX)(void) +{ + int cf; + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + cf = (DATA_TYPE)src1 < (DATA_TYPE)src2; + return cf; +} + +static int glue(compute_all_sbb, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + target_long src1, src2; + src1 = CC_DST + CC_SRC + 1; + src2 = CC_SRC; + cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2; + pf = parity_table[(uint8_t)CC_DST]; + af = (CC_DST ^ src1 ^ src2) & 0x10; + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + of = lshift((src1 ^ src2) & (src1 ^ CC_DST), 12 - DATA_BITS) & CC_O; + return cf | pf | af | zf | sf | of; +} + +static int glue(compute_c_sbb, SUFFIX)(void) +{ + int cf; + target_long src1, src2; + src1 = CC_DST + CC_SRC + 1; + src2 = CC_SRC; + cf = (DATA_TYPE)src1 <= (DATA_TYPE)src2; + return cf; +} + +static int glue(compute_all_logic, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + cf = 0; + pf = parity_table[(uint8_t)CC_DST]; + af = 0; + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + of = 0; + return cf | pf | af | zf | sf | of; +} + +static int glue(compute_c_logic, SUFFIX)(void) +{ + return 0; +} + +static int glue(compute_all_inc, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + target_long src1, src2; + src1 = CC_DST - 1; + src2 = 1; + cf = CC_SRC; + pf = parity_table[(uint8_t)CC_DST]; + af = (CC_DST ^ src1 ^ src2) & 0x10; + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + of = ((CC_DST & DATA_MASK) == SIGN_MASK) << 11; + return cf | pf | af | zf | sf | of; +} + +#if DATA_BITS == 32 +static int glue(compute_c_inc, SUFFIX)(void) +{ + return CC_SRC; +} +#endif + +static int glue(compute_all_dec, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + target_long src1, src2; + src1 = CC_DST + 1; + src2 = 1; + cf = CC_SRC; + pf = parity_table[(uint8_t)CC_DST]; + af = (CC_DST ^ src1 ^ src2) & 0x10; + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + of = ((CC_DST & DATA_MASK) == ((target_ulong)SIGN_MASK - 1)) << 11; + return cf | pf | af | zf | sf | of; +} + +static int glue(compute_all_shl, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + cf = (CC_SRC >> (DATA_BITS - 1)) & CC_C; + pf = parity_table[(uint8_t)CC_DST]; + af = 0; /* undefined */ + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + /* of is defined if shift count == 1 */ + of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O; + return cf | pf | af | zf | sf | of; +} + +static int glue(compute_c_shl, SUFFIX)(void) +{ + return (CC_SRC >> (DATA_BITS - 1)) & CC_C; +} + +#if DATA_BITS == 32 +static int glue(compute_c_sar, SUFFIX)(void) +{ + return CC_SRC & 1; +} +#endif + +static int glue(compute_all_sar, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + cf = CC_SRC & 1; + pf = parity_table[(uint8_t)CC_DST]; + af = 0; /* undefined */ + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + /* of is defined if shift count == 1 */ + of = lshift(CC_SRC ^ CC_DST, 12 - DATA_BITS) & CC_O; + return cf | pf | af | zf | sf | of; +} + +#if DATA_BITS == 32 +static int glue(compute_c_mul, SUFFIX)(void) +{ + int cf; + cf = (CC_SRC != 0); + return cf; +} +#endif + +/* NOTE: we compute the flags like the P4. On olders CPUs, only OF and + CF are modified and it is slower to do that. */ +static int glue(compute_all_mul, SUFFIX)(void) +{ + int cf, pf, af, zf, sf, of; + cf = (CC_SRC != 0); + pf = parity_table[(uint8_t)CC_DST]; + af = 0; /* undefined */ + zf = ((DATA_TYPE)CC_DST == 0) << 6; + sf = lshift(CC_DST, 8 - DATA_BITS) & 0x80; + of = cf << 11; + return cf | pf | af | zf | sf | of; +} + +/* various optimized jumps cases */ + +void OPPROTO glue(op_jb_sub, SUFFIX)(void) +{ + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + + if ((DATA_TYPE)src1 < (DATA_TYPE)src2) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_jz_sub, SUFFIX)(void) +{ + if ((DATA_TYPE)CC_DST == 0) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_jnz_sub, SUFFIX)(void) +{ + if ((DATA_TYPE)CC_DST != 0) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_jbe_sub, SUFFIX)(void) +{ + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + + if ((DATA_TYPE)src1 <= (DATA_TYPE)src2) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_js_sub, SUFFIX)(void) +{ + if (CC_DST & SIGN_MASK) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_jl_sub, SUFFIX)(void) +{ + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + + if ((DATA_STYPE)src1 < (DATA_STYPE)src2) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_jle_sub, SUFFIX)(void) +{ + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + + if ((DATA_STYPE)src1 <= (DATA_STYPE)src2) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +/* oldies */ + +#if DATA_BITS >= 16 + +void OPPROTO glue(op_loopnz, SUFFIX)(void) +{ + if ((DATA_TYPE)ECX != 0 && !(T0 & CC_Z)) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_loopz, SUFFIX)(void) +{ + if ((DATA_TYPE)ECX != 0 && (T0 & CC_Z)) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_jz_ecx, SUFFIX)(void) +{ + if ((DATA_TYPE)ECX == 0) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +void OPPROTO glue(op_jnz_ecx, SUFFIX)(void) +{ + if ((DATA_TYPE)ECX != 0) + GOTO_LABEL_PARAM(1); + FORCE_RET(); +} + +#endif + +/* various optimized set cases */ + +void OPPROTO glue(op_setb_T0_sub, SUFFIX)(void) +{ + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + + T0 = ((DATA_TYPE)src1 < (DATA_TYPE)src2); +} + +void OPPROTO glue(op_setz_T0_sub, SUFFIX)(void) +{ + T0 = ((DATA_TYPE)CC_DST == 0); +} + +void OPPROTO glue(op_setbe_T0_sub, SUFFIX)(void) +{ + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + + T0 = ((DATA_TYPE)src1 <= (DATA_TYPE)src2); +} + +void OPPROTO glue(op_sets_T0_sub, SUFFIX)(void) +{ + T0 = lshift(CC_DST, -(DATA_BITS - 1)) & 1; +} + +void OPPROTO glue(op_setl_T0_sub, SUFFIX)(void) +{ + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + + T0 = ((DATA_STYPE)src1 < (DATA_STYPE)src2); +} + +void OPPROTO glue(op_setle_T0_sub, SUFFIX)(void) +{ + target_long src1, src2; + src1 = CC_DST + CC_SRC; + src2 = CC_SRC; + + T0 = ((DATA_STYPE)src1 <= (DATA_STYPE)src2); +} + +/* shifts */ + +void OPPROTO glue(glue(op_shl, SUFFIX), _T0_T1)(void) +{ + int count; + count = T1 & SHIFT1_MASK; + T0 = T0 << count; + FORCE_RET(); +} + +void OPPROTO glue(glue(op_shr, SUFFIX), _T0_T1)(void) +{ + int count; + count = T1 & SHIFT1_MASK; + T0 &= DATA_MASK; + T0 = T0 >> count; + FORCE_RET(); +} + +void OPPROTO glue(glue(op_sar, SUFFIX), _T0_T1)(void) +{ + int count; + target_long src; + + count = T1 & SHIFT1_MASK; + src = (DATA_STYPE)T0; + T0 = src >> count; + FORCE_RET(); +} + +#undef MEM_WRITE +#include "ops_template_mem.h" + +#define MEM_WRITE 0 +#include "ops_template_mem.h" + +#if !defined(CONFIG_USER_ONLY) +#define MEM_WRITE 1 +#include "ops_template_mem.h" + +#define MEM_WRITE 2 +#include "ops_template_mem.h" +#endif + +/* bit operations */ +#if DATA_BITS >= 16 + +void OPPROTO glue(glue(op_bt, SUFFIX), _T0_T1_cc)(void) +{ + int count; + count = T1 & SHIFT_MASK; + CC_SRC = T0 >> count; +} + +void OPPROTO glue(glue(op_bts, SUFFIX), _T0_T1_cc)(void) +{ + int count; + count = T1 & SHIFT_MASK; + T1 = T0 >> count; + T0 |= (((target_long)1) << count); +} + +void OPPROTO glue(glue(op_btr, SUFFIX), _T0_T1_cc)(void) +{ + int count; + count = T1 & SHIFT_MASK; + T1 = T0 >> count; + T0 &= ~(((target_long)1) << count); +} + +void OPPROTO glue(glue(op_btc, SUFFIX), _T0_T1_cc)(void) +{ + int count; + count = T1 & SHIFT_MASK; + T1 = T0 >> count; + T0 ^= (((target_long)1) << count); +} + +void OPPROTO glue(glue(op_add_bit, SUFFIX), _A0_T1)(void) +{ + A0 += ((DATA_STYPE)T1 >> (3 + SHIFT)) << SHIFT; +} + +void OPPROTO glue(glue(op_bsf, SUFFIX), _T0_cc)(void) +{ + int count; + target_long res; + + res = T0 & DATA_MASK; + if (res != 0) { + count = 0; + while ((res & 1) == 0) { + count++; + res >>= 1; + } + T1 = count; + CC_DST = 1; /* ZF = 0 */ + } else { + CC_DST = 0; /* ZF = 1 */ + } + FORCE_RET(); +} + +void OPPROTO glue(glue(op_bsr, SUFFIX), _T0_cc)(void) +{ + int count; + target_long res; + + res = T0 & DATA_MASK; + if (res != 0) { + count = DATA_BITS - 1; + while ((res & SIGN_MASK) == 0) { + count--; + res <<= 1; + } + T1 = count; + CC_DST = 1; /* ZF = 0 */ + } else { + CC_DST = 0; /* ZF = 1 */ + } + FORCE_RET(); +} + +#endif + +#if DATA_BITS == 32 +void OPPROTO op_update_bt_cc(void) +{ + CC_SRC = T1; +} +#endif + +/* string operations */ + +void OPPROTO glue(op_movl_T0_Dshift, SUFFIX)(void) +{ + T0 = DF << SHIFT; +} + +/* port I/O */ +#if DATA_BITS <= 32 +void OPPROTO glue(glue(op_out, SUFFIX), _T0_T1)(void) +{ + glue(cpu_out, SUFFIX)(env, T0, T1 & DATA_MASK); +} + +void OPPROTO glue(glue(op_in, SUFFIX), _T0_T1)(void) +{ + T1 = glue(cpu_in, SUFFIX)(env, T0); +} + +void OPPROTO glue(glue(op_in, SUFFIX), _DX_T0)(void) +{ + T0 = glue(cpu_in, SUFFIX)(env, EDX & 0xffff); +} + +void OPPROTO glue(glue(op_out, SUFFIX), _DX_T0)(void) +{ + glue(cpu_out, SUFFIX)(env, EDX & 0xffff, T0); +} + +void OPPROTO glue(glue(op_check_io, SUFFIX), _T0)(void) +{ + glue(glue(check_io, SUFFIX), _T0)(); +} + +void OPPROTO glue(glue(op_check_io, SUFFIX), _DX)(void) +{ + glue(glue(check_io, SUFFIX), _DX)(); +} +#endif + +#undef DATA_BITS +#undef SHIFT_MASK +#undef SHIFT1_MASK +#undef SIGN_MASK +#undef DATA_TYPE +#undef DATA_STYPE +#undef DATA_MASK +#undef SUFFIX |