llext_manager: [TMP] add debugging code

Add debugging code for comparing memory copy operations between previous
and current situations.

Signed-off-by: Luca Burelli <l.burelli@arduino.cc>

Author: pillo79

src/library_manager/llext_manager.c

@@ -86,11 +86,31 @@ static int llext_manager_load_data_from_storage(const struct llext_loader *ldr,
 		return ret;
 	}
 
+	/* DEBUG */
+	size_t init_offset = 0;
+	const elf_shdr_t *shdr;
+
+	/* Need to copy sections within regions individually, offsets may differ */
+	for (i = 0, shdr = llext_section_headers(ext); i < llext_section_count(ext); i++, shdr++) {
+		if ((uintptr_t)shdr->sh_addr < (uintptr_t)vma ||
+		    (uintptr_t)shdr->sh_addr >= (uintptr_t)vma + size)
+			continue;
+
+		if (!init_offset)
+			init_offset = shdr->sh_offset;
+
+		/* found a section within the region */
+		size_t offset = shdr->sh_offset - init_offset;
+
+		tr_info(&lib_manager_tr, "old %u: %p -> %p, %u", i,
+			(void *)shdr->sh_addr,
+			(const uint8_t *)ext->mem[region] + offset, shdr->sh_size);
+	}
+
 	llext_get_region_info(ldr, ext, region, NULL, &region_addr, NULL);
 
 	/* Need to copy sections within regions individually, offsets may differ */
 	for (i = 0; i < llext_section_count(ext); i++) {
-		const elf_shdr_t *shdr;
 		enum llext_mem s_region = LLEXT_MEM_COUNT;
 		size_t s_offset = 0;
 
@@ -99,6 +119,10 @@ static int llext_manager_load_data_from_storage(const struct llext_loader *ldr,
 		if (s_region != region)
 			continue;
 
+		tr_info(&lib_manager_tr, "%u: %p -> %p, %u", i,
+			(void *)shdr->sh_addr,
+			(const uint8_t *)region_addr + s_offset, shdr->sh_size);
+
 		ret = memcpy_s((__sparse_force void *)shdr->sh_addr, size - s_offset,
 			       (const uint8_t *)region_addr + s_offset, shdr->sh_size);
 		if (ret < 0)
@@ -260,29 +284,29 @@ static int llext_manager_link(struct llext_buf_loader *ebl, const char *name,
 	mctx->segment[LIB_MANAGER_TEXT].addr = hdr->sh_addr;
 	mctx->segment[LIB_MANAGER_TEXT].size = hdr->sh_size;
 
-	tr_dbg(&lib_manager_tr, ".text: start: %#lx size %#x",
-	       mctx->segment[LIB_MANAGER_TEXT].addr,
-	       mctx->segment[LIB_MANAGER_TEXT].size);
+	tr_info(&lib_manager_tr, ".text: start: %#lx size %#x",
+		mctx->segment[LIB_MANAGER_TEXT].addr,
+		mctx->segment[LIB_MANAGER_TEXT].size);
 
 	/* All read-only data sections */
 	llext_get_region_info(&ebl->loader, *llext, LLEXT_MEM_RODATA,
 			      &hdr, NULL, NULL);
 	mctx->segment[LIB_MANAGER_RODATA].addr = hdr->sh_addr;
 	mctx->segment[LIB_MANAGER_RODATA].size = hdr->sh_size;
 
-	tr_dbg(&lib_manager_tr, ".rodata: start: %#lx size %#x",
-	       mctx->segment[LIB_MANAGER_RODATA].addr,
-	       mctx->segment[LIB_MANAGER_RODATA].size);
+	tr_info(&lib_manager_tr, ".rodata: start: %#lx size %#x",
+		mctx->segment[LIB_MANAGER_RODATA].addr,
+		mctx->segment[LIB_MANAGER_RODATA].size);
 
 	/* All writable data sections */
 	llext_get_region_info(&ebl->loader, *llext, LLEXT_MEM_DATA,
 			      &hdr, NULL, NULL);
 	mctx->segment[LIB_MANAGER_DATA].addr = hdr->sh_addr;
 	mctx->segment[LIB_MANAGER_DATA].size = hdr->sh_size;
 
-	tr_dbg(&lib_manager_tr, ".data: start: %#lx size %#x",
-	       mctx->segment[LIB_MANAGER_DATA].addr,
-	       mctx->segment[LIB_MANAGER_DATA].size);
+	tr_info(&lib_manager_tr, ".data: start: %#lx size %#x",
+		mctx->segment[LIB_MANAGER_DATA].addr,
+		mctx->segment[LIB_MANAGER_DATA].size);
 
 	*buildinfo = NULL;
 	ret = llext_section_shndx(&ebl->loader, *llext, ".mod_buildinfo");