100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/*
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MIT License
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Copyright (c) 2021 PCSX-Redux authors
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#pragma once
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static inline int PCinit() {
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register int r asm("v0");
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__asm__ volatile("break 0, 0x101\n" : "=r"(r));
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return r;
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}
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static inline int PCcreat(const char *name, int perms) {
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register const char *a0 asm("a0") = name;
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register const char *a1 asm("a1") = name;
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register int a2 asm("a2") = 0;
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register int v0 asm("v0");
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register int v1 asm("v1");
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__asm__ volatile("break 0, 0x102\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2));
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if (v0 == 0) return v1;
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return -1;
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}
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static inline int PCopen(const char *name, int flags, int perms) {
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register int a2 asm("a2") = flags;
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register const char *a0 asm("a0") = name;
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register const char *a1 asm("a1") = name;
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register int v0 asm("v0");
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register int v1 asm("v1");
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__asm__ volatile("break 0, 0x103\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2));
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if (v0 == 0) return v1;
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return -1;
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}
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static inline int PCclose(int fd) {
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register int a0 asm("a0") = fd;
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register int a1 asm("a1") = fd;
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register int v0 asm("v0");
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__asm__ volatile("break 0, 0x104\n" : "=r"(v0) : "r"(a0), "r"(a1) : "v1");
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return v0;
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}
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static inline int PCread(int fd, void *buf, int len) {
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register int a0 asm("a0") = 0;
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register int a1 asm("a1") = fd;
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register int a2 asm("a2") = len;
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register void *a3 asm("a3") = buf;
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register int v0 asm("v0");
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register int v1 asm("v1");
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__asm__ volatile("break 0, 0x105\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2), "r"(a3) : "memory");
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if (v0 == 0) return v1;
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return -1;
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}
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static inline int PCwrite(int fd, const void *buf, int len) {
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register int a0 asm("a0") = 0;
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register int a1 asm("a1") = fd;
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register int a2 asm("a2") = len;
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register const void *a3 asm("a3") = buf;
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register int v0 asm("v0");
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register int v1 asm("v1");
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__asm__ volatile("break 0, 0x106\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2), "r"(a3));
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if (v0 == 0) return v1;
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return -1;
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}
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static inline int PClseek(int fd, int offset, int wheel) {
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register int a3 asm("a3") = wheel;
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register int a2 asm("a2") = offset;
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register int a0 asm("a0") = fd;
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register int a1 asm("a1") = fd;
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register int v0 asm("v0");
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register int v1 asm("v1");
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__asm__ volatile("break 0, 0x107\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2), "r"(a3));
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if (v0 == 0) return v1;
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return -1;
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}
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