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Support writing the IHEX symbol table

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This commit is contained in:
Richard Hughes 2016-09-02 14:16:40 +01:00
parent 499f2bf995
commit c68757ce4d
3 changed files with 49 additions and 6 deletions
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1
libdfu/dfu-firmware-private.h
View File

@ -31,6 +31,7 @@ void dfu_firmware_add_symbol (DfuFirmware *firmware,
guint32 symbol_addr);
guint32 dfu_firmware_lookup_symbol (DfuFirmware *firmware,
const gchar *symbol_name);
GPtrArray *dfu_firmware_get_symbols (DfuFirmware *firmware);
G_END_DECLS

22
libdfu/dfu-firmware.c
View File

@ -853,3 +853,25 @@ dfu_firmware_lookup_symbol (DfuFirmware *firmware, const gchar *symbol_name)
return GPOINTER_TO_UINT (g_hash_table_lookup (priv->symtab,
symbol_name));
}
/**
* dfu_firmware_get_symbols:
* @firmware: a #DfuFirmware
*
* Gets all the symbols currently defined.
*
* Return value: (element-type utf8) (transfer container): symbol names
*
* Since: 0.7.4
**/
GPtrArray *
dfu_firmware_get_symbols (DfuFirmware *firmware)
{
DfuFirmwarePrivate *priv = GET_PRIVATE (firmware);
GPtrArray *array = g_ptr_array_new_with_free_func (g_free);
GList *l;
g_autoptr(GList) keys = g_hash_table_get_keys (priv->symtab);
for (l = keys; l != NULL; l = l->next)
g_ptr_array_add (array, g_strdup (l->data));
return array;
}

32
libdfu/dfu-format-ihex.c
View File

@ -314,16 +314,15 @@ dfu_firmware_from_ihex (DfuFirmware *firmware,
return TRUE;
}
static gboolean
dfu_firmware_to_ihex_element (DfuElement *element, GString *str, GError **error)
static void
dfu_firmware_to_ihex_bytes (GString *str, guint8 record_type,
guint32 address, GBytes *contents)
{
GBytes *contents;
const guint8 *data;
const guint chunk_size = 16;
gsize len;
/* get number of chunks */
contents = dfu_element_get_contents (element);
data = g_bytes_get_data (contents, &len);
for (gsize i = 0; i < len; i += chunk_size) {
guint8 checksum = 0;
@ -332,8 +331,8 @@ dfu_firmware_to_ihex_element (DfuElement *element, GString *str, GError **error)
gsize chunk_len = MIN (len - i, 16);
g_string_append_printf (str, ":%02X%04X%02X",
(guint) chunk_len,
(guint) (dfu_element_get_address (element) + i),
(guint) DFU_INHX32_RECORD_TYPE_DATA);
(guint) (address + i),
(guint) record_type);
for (gsize j = 0; j < chunk_len; j++)
g_string_append_printf (str, "%02X", data[i+j]);
@ -342,6 +341,15 @@ dfu_firmware_to_ihex_element (DfuElement *element, GString *str, GError **error)
checksum += (guint8) str->str[str->len - (j + 1)];
g_string_append_printf (str, "%02X\n", checksum);
}
}
static gboolean
dfu_firmware_to_ihex_element (DfuElement *element, GString *str, GError **error)
{
GBytes *contents = dfu_element_get_contents (element);
dfu_firmware_to_ihex_bytes (str, DFU_INHX32_RECORD_TYPE_DATA,
dfu_element_get_address (element),
contents);
return TRUE;
}
@ -363,6 +371,7 @@ dfu_firmware_to_ihex (DfuFirmware *firmware, GError **error)
GPtrArray *elements;
guint i;
guint j;
g_autoptr(GPtrArray) symbols = NULL;
g_autoptr(GString) str = NULL;
/* write all the element data */
@ -383,5 +392,16 @@ dfu_firmware_to_ihex (DfuFirmware *firmware, GError **error)
/* add EOF */
g_string_append_printf (str, ":000000%02XFF\n",
(guint) DFU_INHX32_RECORD_TYPE_EOF);
/* add any symbol table */
symbols = dfu_firmware_get_symbols (firmware);
for (i = 0; i < symbols->len; i++) {
const gchar *name = g_ptr_array_index (symbols, i);
guint32 addr = dfu_firmware_lookup_symbol (firmware, name);
g_autoptr(GBytes) contents = g_bytes_new_static (name, strlen (name));
dfu_firmware_to_ihex_bytes (str, DFU_INHX32_RECORD_TYPE_SYMTAB,
addr, contents);
}
return g_bytes_new (str->str, str->len);
}