From 964c3639e2464b18d72f16fa175fee9beb843b36 Mon Sep 17 00:00:00 2001 From: Øyvind Harboe Date: Sat, 21 Nov 2009 23:25:46 +0100 Subject: embedded: do not allocate large temporary structures on stack MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With -O3 when inlining aggressively the total stack usage will be the sum of many fn's, which can easily get out of hand. Signed-off-by: Øyvind Harboe --- src/target/image.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 61 insertions(+), 6 deletions(-) (limited to 'src') diff --git a/src/target/image.c b/src/target/image.c index 76c8cc90..ca7123ad 100644 --- a/src/target/image.c +++ b/src/target/image.c @@ -147,18 +147,16 @@ static int identify_image_type(struct image *image, const char *type_string, con return ERROR_OK; } -static int image_ihex_buffer_complete(struct image *image) +static int image_ihex_buffer_complete_inner(struct image *image, char *lpszLine, struct imageection *section) { struct image_ihex *ihex = image->type_private; struct fileio *fileio = &ihex->fileio; uint32_t full_address = 0x0; uint32_t cooked_bytes; int i; - char lpszLine[1023]; /* 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 */ - struct imageection section[IMAGE_MAX_SECTIONS]; ihex->buffer = malloc(fileio->size >> 1); cooked_bytes = 0x0; @@ -357,6 +355,35 @@ static int image_ihex_buffer_complete(struct image *image) return ERROR_IMAGE_FORMAT_ERROR; } +/** + * Allocate memory dynamically instead of on the stack. This + * is important w/embedded hosts. + */ +static int image_ihex_buffer_complete(struct image *image) +{ + char *lpszLine = malloc(1023); + if (lpszLine == NULL) + { + LOG_ERROR("Out of memory"); + return ERROR_FAIL; + } + struct imageection *section = malloc(sizeof(struct imageection) * IMAGE_MAX_SECTIONS); + if (section == NULL) + { + free(lpszLine); + LOG_ERROR("Out of memory"); + return ERROR_FAIL; + } + int retval; + + retval = image_ihex_buffer_complete_inner(image, lpszLine, section); + + free(section); + free(lpszLine); + + return retval; +} + static int image_elf_read_headers(struct image *image) { struct image_elf *elf = image->type_private; @@ -499,18 +526,16 @@ static int image_elf_read_section(struct image *image, int section, uint32_t off return ERROR_OK; } -static int image_mot_buffer_complete(struct image *image) +static int image_mot_buffer_complete_inner(struct image *image, char *lpszLine, struct imageection *section) { struct image_mot *mot = image->type_private; struct fileio *fileio = &mot->fileio; uint32_t full_address = 0x0; uint32_t cooked_bytes; int i; - char lpszLine[1023]; /* 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 */ - struct imageection section[IMAGE_MAX_SECTIONS]; mot->buffer = malloc(fileio->size >> 1); cooked_bytes = 0x0; @@ -669,6 +694,36 @@ static int image_mot_buffer_complete(struct image *image) return ERROR_IMAGE_FORMAT_ERROR; } +/** + * Allocate memory dynamically instead of on the stack. This + * is important w/embedded hosts. + */ +static int image_mot_buffer_complete(struct image *image) +{ + char *lpszLine = malloc(1023); + if (lpszLine == NULL) + { + LOG_ERROR("Out of memory"); + return ERROR_FAIL; + } + struct imageection *section = malloc(sizeof(struct imageection) * IMAGE_MAX_SECTIONS); + if (section == NULL) + { + free(lpszLine); + LOG_ERROR("Out of memory"); + return ERROR_FAIL; + } + int retval; + + retval = image_mot_buffer_complete_inner(image, lpszLine, section); + + free(section); + free(lpszLine); + + return retval; +} + + int image_open(struct image *image, const char *url, const char *type_string) { int retval = ERROR_OK; -- cgit v1.2.3