wined3d: Fix fragment shaders sampling directly into oC[n] in the ARB backend.
[wine.git] / libs / wine / port.c
bloba532b2d6e14ca2440ed7c15aa2de31ec7ff08729
1 /*
2 * Wine portability routines
4 * Copyright 2000 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 #include "config.h"
22 #include "wine/port.h"
24 #include <stdlib.h>
25 #include <string.h>
26 #include <sys/types.h>
28 #include "wine/library.h"
30 /* no longer used, for backwards compatibility only */
31 struct wine_pthread_functions;
32 static void *pthread_functions[8];
34 /***********************************************************************
35 * wine_pthread_get_functions
37 void wine_pthread_get_functions( struct wine_pthread_functions *functions, size_t size )
39 memcpy( functions, &pthread_functions, min( size, sizeof(pthread_functions) ));
43 /***********************************************************************
44 * wine_pthread_set_functions
46 void wine_pthread_set_functions( const struct wine_pthread_functions *functions, size_t size )
48 memcpy( &pthread_functions, functions, min( size, sizeof(pthread_functions) ));
52 /***********************************************************************
53 * wine_switch_to_stack
55 * Switch to the specified stack and call the function.
57 void DECLSPEC_NORETURN wine_switch_to_stack( void (*func)(void *), void *arg, void *stack )
59 wine_call_on_stack( (int (*)(void *))func, arg, stack );
60 abort();
64 /***********************************************************************
65 * wine_call_on_stack
67 * Switch to the specified stack to call the function and return.
70 #if defined(__i386__) && defined(__GNUC__)
71 __ASM_GLOBAL_FUNC( wine_call_on_stack,
72 "pushl %ebp\n\t"
73 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
74 __ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
75 "pushl %esi\n\t"
76 __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
77 __ASM_CFI(".cfi_rel_offset %esi,0\n\t")
78 "movl %esp,%esi\n\t"
79 __ASM_CFI(".cfi_def_cfa_register %esi\n\t")
80 "movl 12(%esp),%ecx\n\t" /* func */
81 "movl 16(%esp),%edx\n\t" /* arg */
82 "movl 20(%esp),%eax\n\t" /* stack */
83 "andl $~15,%eax\n\t"
84 "subl $12,%eax\n\t"
85 "movl %eax,%esp\n\t"
86 "pushl %edx\n\t"
87 "xorl %ebp,%ebp\n\t"
88 "call *%ecx\n\t"
89 "movl %esi,%esp\n\t"
90 "popl %esi\n\t"
91 __ASM_CFI(".cfi_adjust_cfa_offset -4\n\t")
92 __ASM_CFI(".cfi_same_value %esi\n\t")
93 "popl %ebp\n\t"
94 __ASM_CFI(".cfi_def_cfa %esp,4\n\t")
95 __ASM_CFI(".cfi_same_value %ebp\n\t")
96 "ret" )
97 #elif defined(__i386__) && defined(_MSC_VER)
98 __declspec(naked) int wine_call_on_stack( int (*func)(void *), void *arg, void *stack )
100 __asm push ebp;
101 __asm push esi;
102 __asm mov ecx, 12[esp];
103 __asm mov edx, 16[esp];
104 __asm mov esi, 20[esp];
105 __asm xchg esp, esi;
106 __asm push edx;
107 __asm xor ebp, ebp;
108 __asm call [ecx];
109 __asm mov esp, esi;
110 __asm pop esi;
111 __asm pop ebp
112 __asm ret;
114 #elif defined(__x86_64__) && defined(__GNUC__)
115 __ASM_GLOBAL_FUNC( wine_call_on_stack,
116 "pushq %rbp\n\t"
117 __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
118 __ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
119 "movq %rsp,%rbp\n\t"
120 __ASM_CFI(".cfi_def_cfa_register %rbp\n\t")
121 "movq %rdi,%rax\n\t" /* func */
122 "movq %rsi,%rdi\n\t" /* arg */
123 "andq $~15,%rdx\n\t" /* stack */
124 "movq %rdx,%rsp\n\t"
125 "callq *%rax\n\t" /* call func */
126 "movq %rbp,%rsp\n\t"
127 __ASM_CFI(".cfi_def_cfa_register %rsp\n\t")
128 "popq %rbp\n\t"
129 __ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
130 __ASM_CFI(".cfi_same_value %rbp\n\t")
131 "ret")
132 #elif defined(__powerpc__) && defined(__GNUC__)
133 __ASM_GLOBAL_FUNC( wine_call_on_stack,
134 "mflr 0\n\t" /* get return address */
135 "stw 0, 4(1)\n\t" /* save return address */
136 "subi 5, 5, 16\n\t" /* reserve space on new stack */
137 "stw 1, 12(5)\n\t" /* store old sp */
138 "mtctr 3\n\t" /* func -> ctr */
139 "mr 3,4\n\t" /* args -> function param 1 (r3) */
140 "mr 1,5\n\t" /* stack */
141 "li 0, 0\n\t" /* zero */
142 "stw 0, 0(1)\n\t" /* bottom of stack */
143 "stwu 1, -16(1)\n\t" /* create a frame for this function */
144 "bctrl\n\t" /* call ctr */
145 "lwz 1, 28(1)\n\t" /* fetch old sp */
146 "lwz 0, 4(1)\n\t" /* fetch return address */
147 "mtlr 0\n\t" /* return address -> lr */
148 "blr") /* return */
149 #elif defined(__arm__) && defined(__GNUC__)
150 __ASM_GLOBAL_FUNC( wine_call_on_stack,
151 "push {r4,LR}\n\t" /* save return address on stack */
152 "mov r4, sp\n\t" /* store old sp in local var */
153 "mov sp, r2\n\t" /* stack */
154 "mov r2, r0\n\t" /* func -> scratch register */
155 "mov r0, r1\n\t" /* arg */
156 "blx r2\n\t" /* call func */
157 "mov sp, r4\n\t" /* restore old sp from local var */
158 "pop {r4,PC}") /* fetch return address into pc */
159 #elif defined(__aarch64__) && defined(__GNUC__)
160 __ASM_GLOBAL_FUNC( wine_call_on_stack,
161 "stp x29, x30, [sp,#-32]!\n\t" /* save return address on stack */
162 "str x19, [sp,#16]\n\t" /* save register on stack */
163 "mov x19, sp\n\t" /* store old sp in local var */
164 "mov sp, x2\n\t" /* stack */
165 "mov x2, x0\n\t" /* func -> scratch register */
166 "mov x0, x1\n\t" /* arg */
167 "blr x2\n\t" /* call func */
168 "mov sp, x19\n\t" /* restore old sp from local var */
169 "ldr x19, [sp,#16]\n\t" /* restore register from stack */
170 "ldp x29, x30, [sp],#32\n\t" /* restore return address */
171 "ret") /* return */
172 #else
173 #error You must implement wine_call_on_stack for your platform
174 #endif