clang: fix malloc() warning with assert

[openocd.git] / src / target / image.c

diff --git a/src/target/image.c b/src/target/image.c
index d36fbc34c83bb8eb543439bb2a3ebcc4c03be1a8..8f437c035797a7901ed9295f2ada0cc5427d89b2 100644 (file)
--- a/src/target/image.c
+++ b/src/target/image.c
@@ -158,7 +158,13 @@ static int image_ihex_buffer_complete_inner(struct image *image, char *lpszLine,
        /* we can't determine the number of sections that we'll have to create ahead of time,
         * so we locally hold them until parsing is finished */
 
-       ihex->buffer = malloc(fileio->size >> 1);
+       int filesize;
+       int retval;
+       retval = fileio_size(fileio, &filesize);
+       if (retval != ERROR_OK)
+               return retval;
+
+       ihex->buffer = malloc(filesize >> 1);
        cooked_bytes = 0x0;
        image->num_sections = 0;
        section[image->num_sections].private = &ihex->buffer[cooked_bytes];
@@ -390,6 +396,7 @@ static int image_elf_read_headers(struct image *image)
        size_t read_bytes;
        uint32_t i,j;
        int retval;
+       uint32_t nload,load_to_vaddr=0;
 
        elf->header = malloc(sizeof(Elf32_Ehdr));
 
@@ -425,7 +432,7 @@ static int image_elf_read_headers(struct image *image)
        if ((elf->endianness != ELFDATA2LSB)
                 &&(elf->endianness != ELFDATA2MSB))
        {
-               LOG_ERROR("invalid ELF file, unknown endianess setting");
+               LOG_ERROR("invalid ELF file, unknown endianness setting");
                return ERROR_IMAGE_FORMAT_ERROR;
        }
 
@@ -465,6 +472,28 @@ static int image_elf_read_headers(struct image *image)
        for (i = 0;i < elf->segment_count;i++)
                if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
                        image->num_sections++;
+
+       assert(image->num_sections > 0);
+
+       /**
+        * some ELF linkers produce binaries with *all* the program header
+        * p_paddr fields zero (there can be however one loadable segment
+        * that has valid physical address 0x0).
+        * If we have such a binary with more than
+        * one PT_LOAD header, then use p_vaddr instead of p_paddr
+        * (ARM ELF standard demands p_paddr = 0 anyway, and BFD
+        * library uses this approach to workaround zero-initialized p_paddrs
+        * when obtaining lma - look at elf.c of BDF)
+        */
+       for (nload = 0, i = 0; i < elf->segment_count; i++)
+               if (elf->segments[i].p_paddr != 0)
+                       break;
+               else if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_memsz) != 0))
+                       ++nload;
+
+       if (i >= elf->segment_count && nload > 1)
+               load_to_vaddr = 1;
+
        /* alloc and fill sections array with loadable segments */
        image->sections = malloc(image->num_sections * sizeof(struct imagesection));
        for (i = 0,j = 0;i < elf->segment_count;i++)
@@ -472,7 +501,10 @@ static int image_elf_read_headers(struct image *image)
                if ((field32(elf, elf->segments[i].p_type) == PT_LOAD) && (field32(elf, elf->segments[i].p_filesz) != 0))
                {
                        image->sections[j].size = field32(elf,elf->segments[i].p_filesz);
-                       image->sections[j].base_address = field32(elf,elf->segments[i].p_paddr);
+                       if (load_to_vaddr)
+                               image->sections[j].base_address = field32(elf,elf->segments[i].p_vaddr);
+                       else
+                               image->sections[j].base_address = field32(elf,elf->segments[i].p_paddr);
                        image->sections[j].private = &elf->segments[i];
                        image->sections[j].flags = field32(elf,elf->segments[i].p_flags);
                        j++;
@@ -537,7 +569,13 @@ static int image_mot_buffer_complete_inner(struct image *image, char *lpszLine,
        /* we can't determine the number of sections that we'll have to create ahead of time,
         * so we locally hold them until parsing is finished */
 
-       mot->buffer = malloc(fileio->size >> 1);
+       int retval;
+       int filesize;
+       retval = fileio_size(fileio, &filesize);
+       if (retval != ERROR_OK)
+               return retval;
+
+       mot->buffer = malloc(filesize >> 1);
        cooked_bytes = 0x0;
        image->num_sections = 0;
        section[image->num_sections].private = &mot->buffer[cooked_bytes];
@@ -743,11 +781,18 @@ int image_open(struct image *image, const char *url, const char *type_string)
                {
                        return retval;
                }
+               int filesize;
+               retval = fileio_size(&image_binary->fileio, &filesize);
+               if (retval != ERROR_OK)
+               {
+                       fileio_close(&image_binary->fileio);
+                       return retval;
+               }
 
                image->num_sections = 1;
                image->sections = malloc(sizeof(struct imagesection));
                image->sections[0].base_address = 0x0;
-               image->sections[0].size = image_binary->fileio.size;
+               image->sections[0].size = filesize;
                image->sections[0].flags = 0;
        }
        else if (image->type == IMAGE_IHEX)