Squash commits for public release

2025-02-12 09:54:05 -05:00
commit 7118adc514
1108 changed files with 80873 additions and 0 deletions
--- a/libs/libc/include/sysdep.h
+++ b/libs/libc/include/sysdep.h
@@ -0,0 +1,94 @@
+#ifndef _LIBC_SYSDEP_H
+#define _LIBC_SYSDEP_H
+
+#include <bits/syscalls.h>
+#include <errno.h>
+#include <stdint.h>
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+
+static inline intptr_t _syscall_impl(sysid_t sysid, intptr_t p1, intptr_t p2, intptr_t p3, intptr_t p4, intptr_t p5)
+{
+    intptr_t ret;
+#ifdef __i386__
+    asm volatile("push %%ebx;movl %2,%%ebx;int $0x80;pop %%ebx"
+                 : "=a"(ret)
+                 : "0"(sysid), "r"((intptr_t)(p1)), "c"((intptr_t)(p2)), "d"((intptr_t)(p3)), "S"((intptr_t)(p4)), "D"((intptr_t)(p5))
+                 : "memory");
+#elif __x86_64__
+    asm volatile(
+        "movq %1, %%rax;\
+        movq %2, %%rdi;\
+        movq %3, %%rsi;\
+        movq %4, %%rdx;\
+        movq %5, %%r10;\
+        movq %6, %%r8;\
+        int $0x80;\
+        movq %%rax, %0;"
+        : "=r"(ret)
+        : "r"(sysid), "r"((intptr_t)(p1)), "r"((intptr_t)(p2)), "r"((intptr_t)(p3)), "r"((intptr_t)(p4)), "r"((intptr_t)(p5))
+        : "memory", "rax", "rdi", "rsi", "rdx", "r10", "r8");
+#elif __arm__
+    asm volatile(
+        "mov r7, %1;\
+        mov r0, %2;\
+        mov r1, %3;\
+        mov r2, %4;\
+        mov r3, %5;\
+        mov r4, %6;\
+        swi 1;\
+        mov %0, r0;"
+        : "=r"(ret)
+        : "r"(sysid), "r"((intptr_t)(p1)), "r"((intptr_t)(p2)), "r"((intptr_t)(p3)), "r"((intptr_t)(p4)), "r"((intptr_t)(p5))
+        : "memory", "r0", "r1", "r2", "r3", "r4", "r7");
+#elif __aarch64__
+    asm volatile(
+        "mov x8, %x1;\
+        mov x0, %x2;\
+        mov x1, %x3;\
+        mov x2, %x4;\
+        mov x3, %x5;\
+        mov x4, %x6;\
+        svc 1;\
+        mov %x0, x0;"
+        : "=r"(ret)
+        : "r"(sysid), "r"((intptr_t)(p1)), "r"((intptr_t)(p2)), "r"((intptr_t)(p3)), "r"((intptr_t)(p4)), "r"((intptr_t)(p5))
+        : "memory", "x0", "x1", "x2", "x3", "x4", "x8");
+#elif defined(__riscv) && (__riscv_xlen == 64)
+    // TODO: Check copatability with Linux.
+    asm volatile(
+        "mv a7, %1;\
+        mv a0, %2;\
+        mv a1, %3;\
+        mv a2, %4;\
+        mv a3, %5;\
+        mv a4, %6;\
+        ecall;\
+        mv %0, a0;"
+        : "=r"(ret)
+        : "r"(sysid), "r"((intptr_t)(p1)), "r"((intptr_t)(p2)), "r"((intptr_t)(p3)), "r"((intptr_t)(p4)), "r"((intptr_t)(p5))
+        : "memory", "a0", "a1", "a2", "a3", "a4", "a7");
+#endif
+    return ret;
+}
+
+#define DO_SYSCALL_0(type) _syscall_impl(type, 0, 0, 0, 0, 0)
+#define DO_SYSCALL_1(type, a) _syscall_impl(type, (intptr_t)a, 0, 0, 0, 0)
+#define DO_SYSCALL_2(type, a, b) _syscall_impl(type, (intptr_t)a, (intptr_t)b, 0, 0, 0)
+#define DO_SYSCALL_3(type, a, b, c) _syscall_impl(type, (intptr_t)a, (intptr_t)b, (intptr_t)c, 0, 0)
+#define DO_SYSCALL_4(type, a, b, c, d) _syscall_impl(type, (intptr_t)a, (intptr_t)b, (intptr_t)c, (intptr_t)d, 0)
+#define DO_SYSCALL_5(type, a, b, c, d, e) _syscall_impl(type, (intptr_t)a, (intptr_t)b, (intptr_t)c, (intptr_t)d, (intptr_t)e);
+#define RETURN_WITH_ERRNO(res, on_suc, on_fail) \
+    do {                                        \
+        if ((intptr_t)res < 0) {                \
+            set_errno(res);                     \
+            return (on_fail);                   \
+        }                                       \
+        set_errno(0);                           \
+        return on_suc;                          \
+    } while (0);
+
+__END_DECLS
+
+#endif // _LIBC_SYSDEP_H