4 * Provides the implementation for the AMD64 ABI (eg prologue, epilogue, and
7 * Copyright (c) 2007 Nathan Keynes.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
20 #define REG_ARG1 REG_RDI
21 #define REG_ARG2 REG_RSI
22 #define REG_ARG3 REG_RDX
23 #define REG_RESULT1 REG_RAX
24 #define MAX_REG_ARG 3 /* There's more, but we don't use more than 3 here anyway */
26 static inline void decode_address( int addr_reg )
28 uintptr_t base = (sh4r.xlat_sh4_mode&SR_MD) ? (uintptr_t)sh4_address_space : (uintptr_t)sh4_user_address_space;
29 MOVL_r32_r32( addr_reg, REG_ECX );
30 SHRL_imm_r32( 12, REG_ECX );
31 MOVP_immptr_rptr( base, REG_RDI );
32 MOVP_sib_rptr( 3, REG_RCX, REG_RDI, 0, REG_RCX );
36 * Note: clobbers ECX to make the indirect call - this isn't usually
37 * a problem since the callee will generally clobber it anyway.
40 static inline void CALL_ptr( void *ptr )
42 MOVP_immptr_rptr( (uintptr_t)ptr, REG_ECX );
46 static inline void CALL1_ptr_r32( void *ptr, int arg1 )
48 if( arg1 != REG_ARG1 ) {
49 MOVQ_r64_r64( arg1, REG_ARG1 );
54 static inline void CALL1_r32disp_r32( int preg, uint32_t disp, int arg1 )
56 if( arg1 != REG_ARG1 ) {
57 MOVQ_r64_r64( arg1, REG_ARG1 );
59 CALL_r32disp(preg, disp);
62 static inline void CALL2_ptr_r32_r32( void *ptr, int arg1, int arg2 )
64 if( arg2 != REG_ARG2 ) {
65 MOVQ_r64_r64( arg2, REG_ARG2 );
67 if( arg1 != REG_ARG1 ) {
68 MOVQ_r64_r64( arg1, REG_ARG1 );
73 static inline void CALL2_r32disp_r32_r32( int preg, uint32_t disp, int arg1, int arg2 )
75 if( arg2 != REG_ARG2 ) {
76 MOVQ_r64_r64( arg2, REG_ARG2 );
78 if( arg1 != REG_ARG1 ) {
79 MOVQ_r64_r64( arg1, REG_ARG1 );
81 CALL_r32disp(preg, disp);
84 static inline void CALL3_r32disp_r32_r32_r32( int preg, uint32_t disp, int arg1, int arg2, int arg3 )
86 if( arg3 != REG_ARG3 ) {
87 MOVQ_r64_r64( arg3, REG_ARG3 );
89 if( arg2 != REG_ARG2 ) {
90 MOVQ_r64_r64( arg2, REG_ARG2 );
92 if( arg1 != REG_ARG1 ) {
93 MOVQ_r64_r64( arg1, REG_ARG1 );
95 CALL_r32disp(preg, disp);
99 * Emit the 'start of block' assembly. Sets up the stack frame and save
102 static inline void enter_block( )
105 MOVP_immptr_rptr( ((uint8_t *)&sh4r) + 128, REG_EBP );
106 SUBQ_imms_r64( 16, REG_RSP );
109 static inline void exit_block( )
111 ADDQ_imms_r64( 16, REG_RSP );
.