Lua bytecode builder, cdrom fixes

tools/luac_psx/pcdrv.h

@@ -0,0 +1,99 @@
+/*
+
+MIT License
+
+Copyright (c) 2021 PCSX-Redux authors
+
+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 THE
+AUTHORS OR COPYRIGHT HOLDERS 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.
+
+*/
+
+#pragma once
+
+static inline int PCinit() {
+    register int r asm("v0");
+    __asm__ volatile("break 0, 0x101\n" : "=r"(r));
+    return r;
+}
+
+static inline int PCcreat(const char *name, int perms) {
+    register const char *a0 asm("a0") = name;
+    register const char *a1 asm("a1") = name;
+    register int a2 asm("a2") = 0;
+    register int v0 asm("v0");
+    register int v1 asm("v1");
+    __asm__ volatile("break 0, 0x102\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2));
+    if (v0 == 0) return v1;
+    return -1;
+}
+
+static inline int PCopen(const char *name, int flags, int perms) {
+    register int a2 asm("a2") = flags;
+    register const char *a0 asm("a0") = name;
+    register const char *a1 asm("a1") = name;
+    register int v0 asm("v0");
+    register int v1 asm("v1");
+    __asm__ volatile("break 0, 0x103\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2));
+    if (v0 == 0) return v1;
+    return -1;
+}
+
+static inline int PCclose(int fd) {
+    register int a0 asm("a0") = fd;
+    register int a1 asm("a1") = fd;
+    register int v0 asm("v0");
+    __asm__ volatile("break 0, 0x104\n" : "=r"(v0) : "r"(a0), "r"(a1) : "v1");
+    return v0;
+}
+
+static inline int PCread(int fd, void *buf, int len) {
+    register int a0 asm("a0") = 0;
+    register int a1 asm("a1") = fd;
+    register int a2 asm("a2") = len;
+    register void *a3 asm("a3") = buf;
+    register int v0 asm("v0");
+    register int v1 asm("v1");
+    __asm__ volatile("break 0, 0x105\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2), "r"(a3) : "memory");
+    if (v0 == 0) return v1;
+    return -1;
+}
+
+static inline int PCwrite(int fd, const void *buf, int len) {
+    register int a0 asm("a0") = 0;
+    register int a1 asm("a1") = fd;
+    register int a2 asm("a2") = len;
+    register const void *a3 asm("a3") = buf;
+    register int v0 asm("v0");
+    register int v1 asm("v1");
+    __asm__ volatile("break 0, 0x106\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2), "r"(a3));
+    if (v0 == 0) return v1;
+    return -1;
+}
+
+static inline int PClseek(int fd, int offset, int wheel) {
+    register int a3 asm("a3") = wheel;
+    register int a2 asm("a2") = offset;
+    register int a0 asm("a0") = fd;
+    register int a1 asm("a1") = fd;
+    register int v0 asm("v0");
+    register int v1 asm("v1");
+    __asm__ volatile("break 0, 0x107\n" : "=r"(v0), "=r"(v1) : "r"(a0), "r"(a1), "r"(a2), "r"(a3));
+    if (v0 == 0) return v1;
+    return -1;
+}