From de69d6317516af95e09ca7a48484fa175b171d11 Mon Sep 17 00:00:00 2001
From: mlugg <mlugg@mlugg.co.uk>
Date: Wed, 11 Jun 2025 21:36:16 +0100
Subject: [PATCH] stage1: elaborate on "unimplemented" in wasi.c

---
 stage1/wasi.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/stage1/wasi.c b/stage1/wasi.c
index 0c9ca18c57..ef2183dae8 100644
--- a/stage1/wasi.c
+++ b/stage1/wasi.c
@@ -517,7 +517,7 @@ uint32_t wasi_snapshot_preview1_fd_read(uint32_t fd, uint32_t iovs, uint32_t iov
         case wasi_filetype_character_device: break;
         case wasi_filetype_regular_file: break;
         case wasi_filetype_directory: return wasi_errno_inval;
-        default: panic("unimplemented");
+        default: panic("unimplemented: fd_read special file");
     }
 
     size_t size = 0;
@@ -629,7 +629,7 @@ uint32_t wasi_snapshot_preview1_fd_pwrite(uint32_t fd, uint32_t iovs, uint32_t i
         case wasi_filetype_character_device: break;
         case wasi_filetype_regular_file: break;
         case wasi_filetype_directory: return wasi_errno_inval;
-        default: panic("unimplemented");
+        default: panic("unimplemented: fd_pwrite special file");
     }
 
     fpos_t pos;
@@ -679,7 +679,7 @@ uint32_t wasi_snapshot_preview1_fd_filestat_set_times(uint32_t fd, uint64_t atim
     fprintf(stderr, "wasi_snapshot_preview1_fd_filestat_set_times(%u, %llu, %llu, 0x%X)\n", fd, (unsigned long long)atim, (unsigned long long)mtim, fst_flags);
 #endif
 
-    panic("unimplemented");
+    panic("unimplemented: fd_filestat_set_times");
     return wasi_errno_success;
 }
 
@@ -703,7 +703,7 @@ uint32_t wasi_snapshot_preview1_environ_get(uint32_t environ, uint32_t environ_b
     fprintf(stderr, "wasi_snapshot_preview1_environ_get()\n");
 #endif
 
-    panic("unimplemented");
+    panic("unimplemented: environ_get");
     return wasi_errno_success;
 }
 
@@ -757,7 +757,7 @@ uint32_t wasi_snapshot_preview1_fd_readdir(uint32_t fd, uint32_t buf, uint32_t b
     fprintf(stderr, "wasi_snapshot_preview1_fd_readdir(%u, 0x%X, %u, %llu)\n", fd, buf, buf_len, (unsigned long long)cookie);
 #endif
 
-    panic("unimplemented");
+    panic("unimplemented: fd_readdir");
     return wasi_errno_success;
 }
 
@@ -774,7 +774,7 @@ uint32_t wasi_snapshot_preview1_fd_write(uint32_t fd, uint32_t iovs, uint32_t io
         case wasi_filetype_character_device: break;
         case wasi_filetype_regular_file: break;
         case wasi_filetype_directory: return wasi_errno_inval;
-        default: panic("unimplemented");
+        default: panic("unimplemented: fd_write special file");
     }
 
     size_t size = 0;
@@ -825,7 +825,7 @@ uint32_t wasi_snapshot_preview1_path_open(uint32_t fd, uint32_t dirflags, uint32
         fds[fd_len].fdflags = fdflags;
         switch (des[de].filetype) {
             case wasi_filetype_directory: fds[fd_len].stream = NULL; break;
-            default: panic("unimplemented");
+            default: panic("unimplemented: path_open non-directory DirEntry");
         }
         fds[fd_len].fs_rights_inheriting = fs_rights_inheriting;
 
@@ -943,7 +943,7 @@ uint32_t wasi_snapshot_preview1_path_unlink_file(uint32_t fd, uint32_t path, uin
     enum wasi_errno lookup_errno = DirEntry_lookup(fd, 0, path_ptr, path_len, &de);
     if (lookup_errno != wasi_errno_success) return lookup_errno;
     if (des[de].filetype == wasi_filetype_directory) return wasi_errno_isdir;
-    if (des[de].filetype != wasi_filetype_regular_file) panic("unimplemented");
+    if (des[de].filetype != wasi_filetype_regular_file) panic("unimplemented: path_unlink_file special file");
     DirEntry_unlink(de);
     return wasi_errno_success;
 }
@@ -961,7 +961,7 @@ uint32_t wasi_snapshot_preview1_fd_pread(uint32_t fd, uint32_t iovs, uint32_t io
         case wasi_filetype_character_device: break;
         case wasi_filetype_regular_file: break;
         case wasi_filetype_directory: return wasi_errno_inval;
-        default: panic("unimplemented");
+        default: panic("unimplemented: fd_pread special file");
     }
 
     fpos_t pos;
@@ -975,7 +975,7 @@ uint32_t wasi_snapshot_preview1_fd_pread(uint32_t fd, uint32_t iovs, uint32_t io
         if (fds[fd].stream != NULL)
             read_size = fread(&m[load32_align2(&iovs_ptr[i].ptr)], 1, len, fds[fd].stream);
         else
-            panic("unimplemented");
+            panic("unimplemented: fd_pread stream=NULL");
         size += read_size;
         if (read_size < len) break;
     }
@@ -1000,7 +1000,7 @@ uint32_t wasi_snapshot_preview1_fd_seek(uint32_t fd, uint64_t in_offset, uint32_
         case wasi_filetype_character_device: break;
         case wasi_filetype_regular_file: break;
         case wasi_filetype_directory: return wasi_errno_inval;
-        default: panic("unimplemented");
+        default: panic("unimplemented: fd_seek special file");
     }
 
     if (fds[fd].stream == NULL) return wasi_errno_success;
@@ -1035,7 +1035,7 @@ uint32_t wasi_snapshot_preview1_poll_oneoff(uint32_t in, uint32_t out, uint32_t
     fprintf(stderr, "wasi_snapshot_preview1_poll_oneoff(%u)\n", nsubscriptions);
 #endif
 
-    panic("unimplemented");
+    panic("unimplemented: poll_oneoff");
     return wasi_errno_success;
 }