From 9489d26b3b669b37376d9d51b305a37a01a32520 Mon Sep 17 00:00:00 2001
From: Christoph Urlacher <christoph.urlacher@protonmail.com>
Date: Wed, 11 Mar 2026 18:08:48 +0100
Subject: [PATCH] baremetal: remove unnecessary functions

---
 .../shared/platform/baremetal/platform_init.c | 98 +++----------------
 .../platform/baremetal/platform_internal.h    | 17 ++--
 .../platform/baremetal/shared_platform.cmake  |  2 -
 3 files changed, 17 insertions(+), 100 deletions(-)

diff --git a/core/shared/platform/baremetal/platform_init.c b/core/shared/platform/baremetal/platform_init.c
index ffdccc59..fa1db213 100644
--- a/core/shared/platform/baremetal/platform_init.c
+++ b/core/shared/platform/baremetal/platform_init.c
@@ -10,89 +10,29 @@ os_icache_flush(void *start, size_t len)
 {
 }
 
-int
-os_cond_init(korp_cond *cond)
-{
-    return 0;
-}
-
-int
-os_cond_destroy(korp_cond *cond)
-{
-    return 0;
-}
-
-int
-os_dumps_proc_mem_info(char *out, unsigned int size)
-{
-    return -1;
-}
-
-__attribute__((weak)) void
-bh_print_proc_mem(const char *prompt)
-{
-}
-
-__attribute__((weak)) void
-bh_log_proc_mem(const char *function, uint32 line)
-{
-}
-
-/****************************************************
- * string
- ****************************************************/
-
-// void *
-// memcpy(void *restrict dest, const void *restrict src, size_t n)
+// int
+// os_cond_init(korp_cond *cond)
 // {
-//     unsigned char *d = (unsigned char *)dest;
-//     const unsigned char *s = (const unsigned char *)src;
-//
-//     while (n--)
-//         *d++ = *s++;
-//
-//     return dest;
+//     return 0;
 // }
 //
-// void *
-// memmove(void *dest, const void *src, size_t n)
+// int
+// os_cond_destroy(korp_cond *cond)
 // {
-//     unsigned char *d = (unsigned char *)dest;
-//     const unsigned char *s = (const unsigned char *)src;
-//
-//     if (d == s || n == 0)
-//         return dest;
-//
-//     if (d < s) {
-//         /* forward copy */
-//         while (n--)
-//             *d++ = *s++;
-//     }
-//     else {
-//         /* backward copy */
-//         d += n;
-//         s += n;
-//         while (n--)
-//             *--d = *--s;
-//     }
-//
-//     return dest;
+//     return 0;
 // }
 //
-// void *
-// memset(void *dest, int c, size_t n)
+// int
+// os_dumps_proc_mem_info(char *out, unsigned int size)
 // {
-//     unsigned char *p = dest;
-//     while (n--)
-//         *p++ = (unsigned char)c;
-//     return dest;
+//     return -1;
 // }
 
 /****************************************************
  * mman
  ****************************************************/
 
-// NOTE: We need os_mmap for aot_load_from_aot_file
+// Need os_mmap for aot_load_from_aot_file
 //
 // Stacktrace:
 // #5  0x0805e5c1 in os_mmap
@@ -104,7 +44,7 @@ bh_log_proc_mem(const char *function, uint32 line)
 // #11 0x08048cff in wasm_runtime_load
 // #12 0x08048112 in main
 
-#define MMAP_SPACE_SIZE (2 * 1024 * 1024)
+// I hope this isn't too simple
 static uint8_t mmap_space[MMAP_SPACE_SIZE];
 static size_t mmap_offset = 0; // Free space begins here
 
@@ -166,22 +106,6 @@ os_mprotect(void *addr, size_t size, int prot)
     return 0;
 }
 
-/****************************************************
- * math
- ****************************************************/
-
-double
-sqrt(double x)
-{
-    return 0.0;
-}
-
-float
-sqrtf(float x)
-{
-    return 0.0;
-}
-
 /****************************************************
  *                     Section 1                    *
  *        Interfaces required by the runtime        *
diff --git a/core/shared/platform/baremetal/platform_internal.h b/core/shared/platform/baremetal/platform_internal.h
index 615d79f7..f8de71c8 100644
--- a/core/shared/platform/baremetal/platform_internal.h
+++ b/core/shared/platform/baremetal/platform_internal.h
@@ -3,13 +3,14 @@
 
 #include <inttypes.h>
 #include <stdbool.h>
-// #include <assert.h>
-// #include <time.h>
 #include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <math.h>
 #include <stdarg.h>
+
+// #include <assert.h>
+// #include <time.h>
 // #include <ctype.h>
 // #include <pthread.h>
 // #include <signal.h>
@@ -42,6 +43,9 @@ extern "C" {
 #define BH_APPLET_PRESERVED_STACK_SIZE (8 * 1024)
 #define BH_THREAD_DEFAULT_PRIORITY 0
 
+#define PAGE_SIZE 4096
+#define MMAP_SPACE_SIZE (2 * 1024 * 1024)
+
 typedef int korp_tid;
 typedef struct {
     int dummy;
@@ -74,21 +78,12 @@ os_get_invalid_handle(void)
     return -1;
 }
 
-#define PAGE_SIZE 4096
-
 static inline int
 os_getpagesize()
 {
     return PAGE_SIZE;
 }
 
-// void *
-// memcpy(void *restrict dest, const void *restrict src, size_t n);
-// void *
-// memmove(void *dest, const void *src, size_t n);
-// void *
-// memset(void *dest, int c, size_t n);
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/core/shared/platform/baremetal/shared_platform.cmake b/core/shared/platform/baremetal/shared_platform.cmake
index 6c0d3db3..e0203ef3 100644
--- a/core/shared/platform/baremetal/shared_platform.cmake
+++ b/core/shared/platform/baremetal/shared_platform.cmake
@@ -5,8 +5,6 @@ add_definitions(-DBH_PLATFORM_BAREMETAL)
 include_directories(${PLATFORM_SHARED_DIR})
 
 include_directories(${PLATFORM_SHARED_DIR}/../include)
-# file (GLOB header ${PLATFORM_SHARED_DIR}/../include/baremetal/*.h)
-# list (APPEND RUNTIME_LIB_HEADER_LIST ${header})
 
 file (GLOB_RECURSE source_all ${PLATFORM_SHARED_DIR}/*.c)
 set (PLATFORM_SHARED_SOURCE ${source_all})