feat: implement FDT-based memory discovery and add comprehensive debug logging to exec syscalls

1 files changed, 76 insertions, 27 deletions

diff --git a/include/kernel/syscall.h b/include/kernel/syscall.h
index af4c474..3594c08 100644
--- a/include/kernel/syscall.h
+++ b/include/kernel/syscall.h
@@ -1,35 +1,84 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * Copyright (C) 2026 Richard QIn
-*/
+ * Copyright (C) 2026 Richard Qin
+ * Lume OS - Linux Compatibility Layer
+ *
+ * Strictly aligned with Linux RISC-V 64 ABI (asm-generic)
+ * Reference: linux/usr/include/asm-generic/unistd.h
+ */
 
 #pragma once
 
-#define SYS_putc        1
-#define SYS_fork        2
-#define SYS_exit        3
-#define SYS_wait        4
-#define SYS_pipe        5
-#define SYS_read        6
-#define SYS_kill        7
-#define SYS_exec        8
-#define SYS_fstat       9
-#define SYS_chdir       10
-#define SYS_dup         11
-#define SYS_getpid      12
-#define SYS_sbrk        13
-#define SYS_sleep       14
-#define SYS_uptime      15
-#define SYS_open        16
-#define SYS_write       17
-#define SYS_mknod       18
-#define SYS_unlink      19
-#define SYS_link        20
-#define SYS_mkdir       21
-#define SYS_close       22
-#define SYS_disk_test   23
-#define SYS_lseek       24
-#define SYS_shutdown    25
+// File System
+#define SYS_getcwd 17
+#define SYS_dup 23
+#define SYS_dup3 24
+#define SYS_fcntl 25
+#define SYS_ioctl 29
+#define SYS_mknodat 33
+#define SYS_mkdirat 34
+#define SYS_unlinkat 35
+#define SYS_linkat 37
+#define SYS_umount2 39
+#define SYS_mount 40
+#define SYS_statfs 43
+#define SYS_ftruncate 46
+#define SYS_faccessat 48
+#define SYS_chdir 49
+#define SYS_fchmod 52
+#define SYS_fchmodat 53
+#define SYS_fchownat 54
+#define SYS_openat 56
+#define SYS_close 57
+#define SYS_vhangup 58
+#define SYS_pipe2 59
+#define SYS_getdents64 61
+#define SYS_lseek 62
+#define SYS_read 63
+#define SYS_write 64
+#define SYS_readv 65
+#define SYS_writev 66
+#define SYS_pread64 67
+#define SYS_pwrite64 68
+#define SYS_pselect6 72
+#define SYS_ppoll 73
+#define SYS_readlinkat 78
+#define SYS_fstatat 79 // newfstatat
+#define SYS_fstat 80
+
+// Process Management
+#define SYS_exit 93
+#define SYS_exit_group 94
+#define SYS_set_tid_address 96
+#define SYS_nanosleep 101
+#define SYS_kill 129
+#define SYS_rt_sigaction 134
+#define SYS_times 153
+#define SYS_uname 160
+#define SYS_gettimeofday 169
+#define SYS_getpid 172
+#define SYS_getppid 173
+#define SYS_getuid 174
+#define SYS_geteuid 175
+#define SYS_getgid 176
+#define SYS_getegid 177
+#define SYS_sysinfo 179
+#define SYS_brk 214
+#define SYS_munmap 215
+#define SYS_mremap 216
+#define SYS_clone 220
+#define SYS_execve 221
+#define SYS_mmap 222
+#define SYS_wait4 260
+#define SYS_prlimit64 261
+
+// System
+#define SYS_reboot 142 // Used for shutdown
+
+// === Custom / Debug (Non-Standard) ===
+// Placed above 1000 to avoid conflicts with Linux ABI
+#define SYS_putc 1000
+#define SYS_disk_test 1001
 
 #ifndef __ASSEMBLER__
 void syscall();