/************************************************************************** * * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * **************************************************************************/ #if defined(__i386__) || defined(__386__) || defined(i386) #include "pipe/p_compiler.h" #include "pipe/p_debug.h" #include "pipe/p_pointer.h" #include "rtasm_execmem.h" #include "rtasm_x86sse.h" #define DISASSEM 0 #define X86_TWOB 0x0f #define DUMP_SSE 0 #if DUMP_SSE static void _print_reg( struct x86_reg reg ) { if (reg.mod != mod_REG) debug_printf( "[" ); switch( reg.file ) { case file_REG32: switch( reg.idx ) { case reg_AX: debug_printf( "EAX" ); break; case reg_CX: debug_printf( "ECX" ); break; case reg_DX: debug_printf( "EDX" ); break; case reg_BX: debug_printf( "EBX" ); break; case reg_SP: debug_printf( "ESP" ); break; case reg_BP: debug_printf( "EBP" ); break; case reg_SI: debug_printf( "ESI" ); break; case reg_DI: debug_printf( "EDI" ); break; } break; case file_MMX: debug_printf( "MMX%u", reg.idx ); break; case file_XMM: debug_printf( "XMM%u", reg.idx ); break; case file_x87: debug_printf( "fp%u", reg.idx ); break; } if (reg.mod == mod_DISP8 || reg.mod == mod_DISP32) debug_printf("+%d", reg.disp); if (reg.mod != mod_REG) debug_printf( "]" ); } #define DUMP_START() debug_printf( "\n" ) #define DUMP_END() debug_printf( "\n" ) #define DUMP() do { \ const char *foo = __FUNCTION__; \ while (*foo && *foo != '_') \ foo++; \ if (*foo) \ foo++; \ debug_printf( "\n% 15s ", foo ); \ } while (0) #define DUMP_I( I ) do { \ DUMP(); \ debug_printf( "%u", I ); \ } while( 0 ) #define DUMP_R( R0 ) do { \ DUMP(); \ _print_reg( R0 ); \ } while( 0 ) #define DUMP_RR( R0, R1 ) do { \ DUMP(); \ _print_reg( R0 ); \ debug_printf( ", " ); \ _print_reg( R1 ); \ } while( 0 ) #define DUMP_RI( R0, I ) do { \ DUMP(); \ _print_reg( R0 ); \ debug_printf( ", %u", I ); \ } while( 0 ) #define DUMP_RRI( R0, R1, I ) do { \ DUMP(); \ _print_reg( R0 ); \ debug_printf( ", " ); \ _print_reg( R1 ); \ debug_printf( ", %u", I ); \ } while( 0 ) #else #define DUMP_START() #define DUMP_END() #define DUMP( ) #define DUMP_I( I ) #define DUMP_R( R0 ) #define DUMP_RR( R0, R1 ) #define DUMP_RI( R0, I ) #define DUMP_RRI( R0, R1, I ) #endif static void do_realloc( struct x86_function *p ) { if (p->store == p->error_overflow) { p->csr = p->store; } else if (p->size == 0) { p->size = 1024; p->store = rtasm_exec_malloc(p->size); p->csr = p->store; } else { uintptr_t used = pointer_to_uintptr( p->csr ) - pointer_to_uintptr( p->store ); unsigned char *tmp = p->store; p->size *= 2; p->store = rtasm_exec_malloc(p->size); if (p->store) { memcpy(p->store, tmp, used); p->csr = p->store + used; } else { p->csr = p->store; } rtasm_exec_free(tmp); } if (p->store == NULL) { p->store = p->csr = p->error_overflow; p->size = sizeof(p->error_overflow); } } /* Emit bytes to the instruction stream: */ static unsigned char *reserve( struct x86_function *p, int bytes ) { if (p->csr + bytes - p->store > (int) p->size) do_realloc(p); { unsigned char *csr = p->csr; p->csr += bytes; return csr; } } static void emit_1b( struct x86_function *p, char b0 ) { char *csr = (char *)reserve(p, 1); *csr = b0; } static void emit_1i( struct x86_function *p, int i0 ) { int *icsr = (int *)reserve(p, sizeof(i0)); *icsr = i0; } static void emit_1ub( struct x86_function *p, unsigned char b0 ) { unsigned char *csr = reserve(p, 1); *csr++ = b0; } static void emit_2ub( struct x86_function *p, unsigned char b0, unsigned char b1 ) { unsigned char *csr = reserve(p, 2); *csr++ = b0; *csr++ = b1; } static void emit_3ub( struct x86_function *p, unsigned char b0, unsigned char b1, unsigned char b2 ) { unsigned char *csr = reserve(p, 3); *csr++ = b0; *csr++ = b1; *csr++ = b2; } /* Build a modRM byte + possible displacement. No treatment of SIB * indexing. BZZT - no way to encode an absolute address. */ static void emit_modrm( struct x86_function *p, struct x86_reg reg, struct x86_reg regmem ) { unsigned char val = 0; assert(reg.mod == mod_REG); val |= regmem.mod << 6; /* mod field */ val |= reg.idx << 3; /* reg field */ val |= regmem.idx; /* r/m field */ emit_1ub(p, val); /* Oh-oh we've stumbled into the SIB thing. */ if (regmem.file == file_REG32 && regmem.idx == reg_SP) { emit_1ub(p, 0x24); /* simplistic! */ } switch (regmem.mod) { case mod_REG: case mod_INDIRECT: break; case mod_DISP8: emit_1b(p, (char) regmem.disp); break; case mod_DISP32: emit_1i(p, regmem.disp); break; default: assert(0); break; } } static void emit_modrm_noreg( struct x86_function *p, unsigned op, struct x86_reg regmem ) { struct x86_reg dummy = x86_make_reg(file_REG32, op); emit_modrm(p, dummy, regmem); } /* Many x86 instructions have two opcodes to cope with the situations * where the destination is a register or memory reference * respectively. This function selects the correct opcode based on * the arguments presented. */ static void emit_op_modrm( struct x86_function *p, unsigned char op_dst_is_reg, unsigned char op_dst_is_mem, struct x86_reg dst, struct x86_reg src ) { switch (dst.mod) { case mod_REG: emit_1ub(p, op_dst_is_reg); emit_modrm(p, dst, src); break; case mod_INDIRECT: case mod_DISP32: case mod_DISP8: assert(src.mod == mod_REG); emit_1ub(p, op_dst_is_mem); emit_modrm(p, src, dst); break; default: assert(0); break; } } /* Create and manipulate registers and regmem values: */ struct x86_reg x86_make_reg( enum x86_reg_file file, enum x86_reg_name idx ) { struct x86_reg reg; reg.file = file; reg.idx = idx; reg.mod = mod_REG; reg.disp = 0; return reg; } struct x86_reg x86_make_disp( struct x86_reg reg, int disp ) { assert(reg.file == file_REG32); if (reg.mod == mod_REG) reg.disp = disp; else reg.disp += disp; if (reg.disp == 0) reg.mod = mod_INDIRECT; else if (reg.disp <= 127 && reg.disp >= -128) reg.mod = mod_DISP8; else reg.mod = mod_DISP32; return reg; } struct x86_reg x86_deref( struct x86_reg reg ) { return x86_make_disp(reg, 0); } struct x86_reg x86_get_base_reg( struct x86_reg reg ) { return x86_make_reg( reg.file, reg.idx ); } unsigned char *x86_get_label( struct x86_function *p ) { return p->csr; } /*********************************************************************** * x86 instructions */ void x86_jcc( struct x86_function *p, enum x86_cc cc, unsigned char *label ) { intptr_t offset = pointer_to_intptr( label ) - (pointer_to_intptr( x86_get_label(p) ) + 2); DUMP_I(cc); if (offset <= 127 && offset >= -128) { emit_1ub(p, 0x70 + cc); emit_1b(p, (char) offset); } else { offset = pointer_to_intptr( label ) - (pointer_to_intptr( x86_get_label(p) ) + 6); emit_2ub(p, 0x0f, 0x80 + cc); emit_1i(p, offset); } } /* Always use a 32bit offset for forward jumps: */ unsigned char *x86_jcc_forward( struct x86_function *p, enum x86_cc cc ) { DUMP_I(cc); emit_2ub(p, 0x0f, 0x80 + cc); emit_1i(p, 0); return x86_get_label(p); } unsigned char *x86_jmp_forward( struct x86_function *p) { DUMP(); emit_1ub(p, 0xe9); emit_1i(p, 0); return x86_get_label(p); } unsigned char *x86_call_forward( struct x86_function *p) { DUMP(); emit_1ub(p, 0xe8); emit_1i(p, 0); return x86_get_label(p); } /* Fixup offset from forward jump: */ void x86_fixup_fwd_jump( struct x86_function *p, unsigned char *fixup ) { *(int *)(fixup - 4) = pointer_to_intptr( x86_get_label(p) ) - pointer_to_intptr( fixup ); } void x86_jmp( struct x86_function *p, unsigned char *label) { DUMP_I( label ); emit_1ub(p, 0xe9); emit_1i(p, pointer_to_intptr( label ) - pointer_to_intptr( x86_get_label(p) ) - 4); } #if 0 static unsigned char *cptr( void (*label)() ) { return (unsigned char *) label; } /* This doesn't work once we start reallocating & copying the * generated code on buffer fills, because the call is relative to the * current pc. */ void x86_call( struct x86_function *p, void (*label)()) { DUMP_I( label ); emit_1ub(p, 0xe8); emit_1i(p, cptr(label) - x86_get_label(p) - 4); } #else void x86_call( struct x86_function *p, struct x86_reg reg) { DUMP_R( reg ); emit_1ub(p, 0xff); emit_modrm_noreg(p, 2, reg); } #endif /* michal: * Temporary. As I need immediate operands, and dont want to mess with the codegen, * I load the immediate into general purpose register and use it. */ void x86_mov_reg_imm( struct x86_function *p, struct x86_reg dst, int imm ) { DUMP_RI( dst, imm ); assert(dst.mod == mod_REG); emit_1ub(p, 0xb8 + dst.idx); emit_1i(p, imm); } void x86_push( struct x86_function *p, struct x86_reg reg ) { DUMP_R( reg ); assert(reg.mod == mod_REG); emit_1ub(p, 0x50 + reg.idx); p->stack_offset += 4; } void x86_pop( struct x86_function *p, struct x86_reg reg ) { DUMP_R( reg ); assert(reg.mod == mod_REG); emit_1ub(p, 0x58 + reg.idx); p->stack_offset -= 4; } void x86_inc( struct x86_function *p, struct x86_reg reg ) { DUMP_R( reg ); assert(reg.mod == mod_REG); emit_1ub(p, 0x40 + reg.idx); } void x86_dec( struct x86_function *p, struct x86_reg reg ) { DUMP_R( reg ); assert(reg.mod == mod_REG); emit_1ub(p, 0x48 + reg.idx); } void x86_ret( struct x86_function *p ) { DUMP(); assert(p->stack_offset == 0); emit_1ub(p, 0xc3); } void x86_retw( struct x86_function *p, unsigned short imm ) { DUMP(); emit_3ub(p, 0xc2, imm & 0xff, (imm >> 8) & 0xff); } void x86_sahf( struct x86_function *p ) { DUMP(); emit_1ub(p, 0x9e); } void x86_mov( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_op_modrm( p, 0x8b, 0x89, dst, src ); } void x86_xor( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_op_modrm( p, 0x33, 0x31, dst, src ); } void x86_cmp( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_op_modrm( p, 0x3b, 0x39, dst, src ); } void x86_lea( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_1ub(p, 0x8d); emit_modrm( p, dst, src ); } void x86_test( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_1ub(p, 0x85); emit_modrm( p, dst, src ); } void x86_add( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_op_modrm(p, 0x03, 0x01, dst, src ); } /* Calculate EAX * src, results in EDX:EAX. */ void x86_mul( struct x86_function *p, struct x86_reg src ) { DUMP_R( src ); emit_1ub(p, 0xf7); emit_modrm_noreg(p, 4, src ); } void x86_imul( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0xAF); emit_modrm(p, dst, src); } void x86_sub( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_op_modrm(p, 0x2b, 0x29, dst, src ); } void x86_or( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_op_modrm( p, 0x0b, 0x09, dst, src ); } void x86_and( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_op_modrm( p, 0x23, 0x21, dst, src ); } /*********************************************************************** * SSE instructions */ void sse_movss( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, 0xF3, X86_TWOB); emit_op_modrm( p, 0x10, 0x11, dst, src ); } void sse_movaps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_1ub(p, X86_TWOB); emit_op_modrm( p, 0x28, 0x29, dst, src ); } void sse_movups( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_1ub(p, X86_TWOB); emit_op_modrm( p, 0x10, 0x11, dst, src ); } void sse_movhps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); assert(dst.mod != mod_REG || src.mod != mod_REG); emit_1ub(p, X86_TWOB); emit_op_modrm( p, 0x16, 0x17, dst, src ); /* cf movlhps */ } void sse_movlps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); assert(dst.mod != mod_REG || src.mod != mod_REG); emit_1ub(p, X86_TWOB); emit_op_modrm( p, 0x12, 0x13, dst, src ); /* cf movhlps */ } void sse_maxps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x5F); emit_modrm( p, dst, src ); } void sse_maxss( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0xF3, X86_TWOB, 0x5F); emit_modrm( p, dst, src ); } void sse_divss( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0xF3, X86_TWOB, 0x5E); emit_modrm( p, dst, src ); } void sse_minps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x5D); emit_modrm( p, dst, src ); } void sse_subps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x5C); emit_modrm( p, dst, src ); } void sse_mulps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x59); emit_modrm( p, dst, src ); } void sse_mulss( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0xF3, X86_TWOB, 0x59); emit_modrm( p, dst, src ); } void sse_addps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x58); emit_modrm( p, dst, src ); } void sse_addss( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0xF3, X86_TWOB, 0x58); emit_modrm( p, dst, src ); } void sse_andnps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x55); emit_modrm( p, dst, src ); } void sse_andps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x54); emit_modrm( p, dst, src ); } void sse_rsqrtps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x52); emit_modrm( p, dst, src ); } void sse_rsqrtss( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0xF3, X86_TWOB, 0x52); emit_modrm( p, dst, src ); } void sse_movhlps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); assert(dst.mod == mod_REG && src.mod == mod_REG); emit_2ub(p, X86_TWOB, 0x12); emit_modrm( p, dst, src ); } void sse_movlhps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); assert(dst.mod == mod_REG && src.mod == mod_REG); emit_2ub(p, X86_TWOB, 0x16); emit_modrm( p, dst, src ); } void sse_orps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x56); emit_modrm( p, dst, src ); } void sse_xorps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x57); emit_modrm( p, dst, src ); } void sse_cvtps2pi( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); assert(dst.file == file_MMX && (src.file == file_XMM || src.mod != mod_REG)); p->need_emms = 1; emit_2ub(p, X86_TWOB, 0x2d); emit_modrm( p, dst, src ); } void sse2_cvtdq2ps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x5b); emit_modrm( p, dst, src ); } /* Shufps can also be used to implement a reduced swizzle when dest == * arg0. */ void sse_shufps( struct x86_function *p, struct x86_reg dst, struct x86_reg src, unsigned char shuf) { DUMP_RRI( dst, src, shuf ); emit_2ub(p, X86_TWOB, 0xC6); emit_modrm(p, dst, src); emit_1ub(p, shuf); } void sse_unpckhps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub( p, X86_TWOB, 0x15 ); emit_modrm( p, dst, src ); } void sse_unpcklps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub( p, X86_TWOB, 0x14 ); emit_modrm( p, dst, src ); } void sse_cmpps( struct x86_function *p, struct x86_reg dst, struct x86_reg src, unsigned char cc) { DUMP_RRI( dst, src, cc ); emit_2ub(p, X86_TWOB, 0xC2); emit_modrm(p, dst, src); emit_1ub(p, cc); } void sse_pmovmskb( struct x86_function *p, struct x86_reg dst, struct x86_reg src) { DUMP_RR( dst, src ); emit_3ub(p, 0x66, X86_TWOB, 0xD7); emit_modrm(p, dst, src); } /*********************************************************************** * SSE2 instructions */ /** * Perform a reduced swizzle: */ void sse2_pshufd( struct x86_function *p, struct x86_reg dst, struct x86_reg src, unsigned char shuf) { DUMP_RRI( dst, src, shuf ); emit_3ub(p, 0x66, X86_TWOB, 0x70); emit_modrm(p, dst, src); emit_1ub(p, shuf); } void sse2_cvttps2dq( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub( p, 0xF3, X86_TWOB, 0x5B ); emit_modrm( p, dst, src ); } void sse2_cvtps2dq( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0x66, X86_TWOB, 0x5B); emit_modrm( p, dst, src ); } void sse2_packssdw( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0x66, X86_TWOB, 0x6B); emit_modrm( p, dst, src ); } void sse2_packsswb( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0x66, X86_TWOB, 0x63); emit_modrm( p, dst, src ); } void sse2_packuswb( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0x66, X86_TWOB, 0x67); emit_modrm( p, dst, src ); } void sse2_punpcklbw( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0x66, X86_TWOB, 0x60); emit_modrm( p, dst, src ); } void sse2_rcpps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, X86_TWOB, 0x53); emit_modrm( p, dst, src ); } void sse2_rcpss( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_3ub(p, 0xF3, X86_TWOB, 0x53); emit_modrm( p, dst, src ); } void sse2_movd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); emit_2ub(p, 0x66, X86_TWOB); emit_op_modrm( p, 0x6e, 0x7e, dst, src ); } /*********************************************************************** * x87 instructions */ void x87_fist( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); emit_1ub(p, 0xdb); emit_modrm_noreg(p, 2, dst); } void x87_fistp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); emit_1ub(p, 0xdb); emit_modrm_noreg(p, 3, dst); } void x87_fild( struct x86_function *p, struct x86_reg arg ) { DUMP_R( arg ); emit_1ub(p, 0xdf); emit_modrm_noreg(p, 0, arg); } void x87_fldz( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xee); } void x87_fldcw( struct x86_function *p, struct x86_reg arg ) { DUMP_R( arg ); assert(arg.file == file_REG32); assert(arg.mod != mod_REG); emit_1ub(p, 0xd9); emit_modrm_noreg(p, 5, arg); } void x87_fld1( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xe8); } void x87_fldl2e( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xea); } void x87_fldln2( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xed); } void x87_fwait( struct x86_function *p ) { DUMP(); emit_1ub(p, 0x9b); } void x87_fnclex( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xdb, 0xe2); } void x87_fclex( struct x86_function *p ) { x87_fwait(p); x87_fnclex(p); } static void x87_arith_op( struct x86_function *p, struct x86_reg dst, struct x86_reg arg, unsigned char dst0ub0, unsigned char dst0ub1, unsigned char arg0ub0, unsigned char arg0ub1, unsigned char argmem_noreg) { assert(dst.file == file_x87); if (arg.file == file_x87) { if (dst.idx == 0) emit_2ub(p, dst0ub0, dst0ub1+arg.idx); else if (arg.idx == 0) emit_2ub(p, arg0ub0, arg0ub1+arg.idx); else assert(0); } else if (dst.idx == 0) { assert(arg.file == file_REG32); emit_1ub(p, 0xd8); emit_modrm_noreg(p, argmem_noreg, arg); } else assert(0); } void x87_fmul( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); x87_arith_op(p, dst, src, 0xd8, 0xc8, 0xdc, 0xc8, 4); } void x87_fsub( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); x87_arith_op(p, dst, src, 0xd8, 0xe0, 0xdc, 0xe8, 4); } void x87_fsubr( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); x87_arith_op(p, dst, src, 0xd8, 0xe8, 0xdc, 0xe0, 5); } void x87_fadd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); x87_arith_op(p, dst, src, 0xd8, 0xc0, 0xdc, 0xc0, 0); } void x87_fdiv( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); x87_arith_op(p, dst, src, 0xd8, 0xf0, 0xdc, 0xf8, 6); } void x87_fdivr( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); x87_arith_op(p, dst, src, 0xd8, 0xf8, 0xdc, 0xf0, 7); } void x87_fmulp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); assert(dst.file == file_x87); assert(dst.idx >= 1); emit_2ub(p, 0xde, 0xc8+dst.idx); } void x87_fsubp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); assert(dst.file == file_x87); assert(dst.idx >= 1); emit_2ub(p, 0xde, 0xe8+dst.idx); } void x87_fsubrp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); assert(dst.file == file_x87); assert(dst.idx >= 1); emit_2ub(p, 0xde, 0xe0+dst.idx); } void x87_faddp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); assert(dst.file == file_x87); assert(dst.idx >= 1); emit_2ub(p, 0xde, 0xc0+dst.idx); } void x87_fdivp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); assert(dst.file == file_x87); assert(dst.idx >= 1); emit_2ub(p, 0xde, 0xf8+dst.idx); } void x87_fdivrp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); assert(dst.file == file_x87); assert(dst.idx >= 1); emit_2ub(p, 0xde, 0xf0+dst.idx); } void x87_fucom( struct x86_function *p, struct x86_reg arg ) { DUMP_R( arg ); assert(arg.file == file_x87); emit_2ub(p, 0xdd, 0xe0+arg.idx); } void x87_fucomp( struct x86_function *p, struct x86_reg arg ) { DUMP_R( arg ); assert(arg.file == file_x87); emit_2ub(p, 0xdd, 0xe8+arg.idx); } void x87_fucompp( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xda, 0xe9); } void x87_fxch( struct x86_function *p, struct x86_reg arg ) { DUMP_R( arg ); assert(arg.file == file_x87); emit_2ub(p, 0xd9, 0xc8+arg.idx); } void x87_fabs( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xe1); } void x87_fchs( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xe0); } void x87_fcos( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xff); } void x87_fprndint( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xfc); } void x87_fscale( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xfd); } void x87_fsin( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xfe); } void x87_fsincos( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xfb); } void x87_fsqrt( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xfa); } void x87_fxtract( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xf4); } /* st0 = (2^st0)-1 * * Restrictions: -1.0 <= st0 <= 1.0 */ void x87_f2xm1( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xf0); } /* st1 = st1 * log2(st0); * pop_stack; */ void x87_fyl2x( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xf1); } /* st1 = st1 * log2(st0 + 1.0); * pop_stack; * * A fast operation, with restrictions: -.29 < st0 < .29 */ void x87_fyl2xp1( struct x86_function *p ) { DUMP(); emit_2ub(p, 0xd9, 0xf9); } void x87_fld( struct x86_function *p, struct x86_reg arg ) { DUMP_R( arg ); if (arg.file == file_x87) emit_2ub(p, 0xd9, 0xc0 + arg.idx); else { emit_1ub(p, 0xd9); emit_modrm_noreg(p, 0, arg); } } void x87_fst( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); if (dst.file == file_x87) emit_2ub(p, 0xdd, 0xd0 + dst.idx); else { emit_1ub(p, 0xd9); emit_modrm_noreg(p, 2, dst); } } void x87_fstp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); if (dst.file == file_x87) emit_2ub(p, 0xdd, 0xd8 + dst.idx); else { emit_1ub(p, 0xd9); emit_modrm_noreg(p, 3, dst); } } void x87_fcom( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); if (dst.file == file_x87) emit_2ub(p, 0xd8, 0xd0 + dst.idx); else { emit_1ub(p, 0xd8); emit_modrm_noreg(p, 2, dst); } } void x87_fcomp( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); if (dst.file == file_x87) emit_2ub(p, 0xd8, 0xd8 + dst.idx); else { emit_1ub(p, 0xd8); emit_modrm_noreg(p, 3, dst); } } void x87_fnstsw( struct x86_function *p, struct x86_reg dst ) { DUMP_R( dst ); assert(dst.file == file_REG32); if (dst.idx == reg_AX && dst.mod == mod_REG) emit_2ub(p, 0xdf, 0xe0); else { emit_1ub(p, 0xdd); emit_modrm_noreg(p, 7, dst); } } /*********************************************************************** * MMX instructions */ void mmx_emms( struct x86_function *p ) { DUMP(); assert(p->need_emms); emit_2ub(p, 0x0f, 0x77); p->need_emms = 0; } void mmx_packssdw( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); assert(dst.file == file_MMX && (src.file == file_MMX || src.mod != mod_REG)); p->need_emms = 1; emit_2ub(p, X86_TWOB, 0x6b); emit_modrm( p, dst, src ); } void mmx_packuswb( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); assert(dst.file == file_MMX && (src.file == file_MMX || src.mod != mod_REG)); p->need_emms = 1; emit_2ub(p, X86_TWOB, 0x67); emit_modrm( p, dst, src ); } void mmx_movd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); p->need_emms = 1; emit_1ub(p, X86_TWOB); emit_op_modrm( p, 0x6e, 0x7e, dst, src ); } void mmx_movq( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) { DUMP_RR( dst, src ); p->need_emms = 1; emit_1ub(p, X86_TWOB); emit_op_modrm( p, 0x6f, 0x7f, dst, src ); } /*********************************************************************** * Helper functions */ /* Retreive a reference to one of the function arguments, taking into * account any push/pop activity: */ struct x86_reg x86_fn_arg( struct x86_function *p, unsigned arg ) { return x86_make_disp(x86_make_reg(file_REG32, reg_SP), p->stack_offset + arg * 4); /* ??? */ } void x86_init_func( struct x86_function *p ) { p->size = 0; p->store = NULL; p->csr = p->store; DUMP_START(); } void x86_init_func_size( struct x86_function *p, unsigned code_size ) { p->size = code_size; p->store = rtasm_exec_malloc(code_size); if (p->store == NULL) { p->store = p->error_overflow; } p->csr = p->store; DUMP_START(); } void x86_release_func( struct x86_function *p ) { if (p->store && p->store != p->error_overflow) rtasm_exec_free(p->store); p->store = NULL; p->csr = NULL; p->size = 0; } void (*x86_get_func( struct x86_function *p ))(void) { DUMP_END(); if (DISASSEM && p->store) debug_printf("disassemble %p %p\n", p->store, p->csr); if (p->store == p->error_overflow) return (void (*)(void)) NULL; else return (void (*)(void)) p->store; } #else void x86sse_dummy( void ) { } #endif