Reduce the global struct size

app/src/apdu_sign.h

@@ -74,8 +74,8 @@ typedef struct {
  union {
  /// @brief clear signing state info.
  struct {
- size_t total_length;
  tz_parser_state parser_state;
+ size_t total_length;
  uint8_t last_field_index;
  bool received_msg;
  } clear;

app/src/globals.h

@@ -89,7 +89,6 @@ typedef enum {
  */
 typedef struct {
  /* State */
- main_step_t step; /// Current operational state of app.
  tz_ui_stream_t stream; /// UX and display related information
  bip32_path_with_curve_t path_with_curve; /// Derivation path
  union {
@@ -119,6 +118,7 @@ typedef struct {
  char error_code[ERROR_CODE_SIZE]; /// Error codes to be displayed in
  /// blindsigning.
 #endif
+ main_step_t step; /// Current operational state of app.
 } globals_t;
 
 /* Settings */

app/src/parser/parser_state.h

@@ -90,7 +90,6 @@ typedef struct {
  tz_parser_regs regs; /// parser register
 
  /// common fields to communicate with caller
- tz_parser_result errno; /// current parser result
  struct {
  char field_name[TZ_FIELD_NAME_SIZE]; /// name of the last field
  /// parsed
@@ -100,14 +99,15 @@ typedef struct {
  } field_info; /// information of the last field parsed
  // common singleton buffers
  int ofs; /// offset for the parser
+ /// input type specific state
+ tz_micheline_state micheline; /// micheline parser state
+ tz_operation_state operation; /// operation parser state
  struct {
  tz_num_parser_buffer num; /// number parser buffer
  uint8_t capture[TZ_CAPTURE_BUFFER_SIZE]; /// capture buffer is used
  /// to store string values
  } buffers;
- /// input type specific state
- tz_micheline_state micheline; /// micheline parser state
- tz_operation_state operation; /// operation parser state
+ tz_parser_result errno; /// current parser result
 } tz_parser_state;
 
 /**

app/src/ui_stream.h

@@ -139,12 +139,12 @@ typedef struct {
 #ifdef HAVE_BAGL
  tz_ui_icon_t icon; /// Icon to display on the screen.
  tz_ui_layout_type_t
- layout_type; /// Layout type for the screen. CAN BP, BNP, NP, PB or
- /// HOME_X where X can be one of the BP, BNP, PB.
- char *title;  /// Title to display on the screen.
- char *body[TZ_UI_STREAM_CONTENTS_LINES]; /// Body to display on the
-  /// screen (Below title).
- short body_len; /// number of non-empty lines in the body.
+ layout_type;  /// Layout type for the screen. CAN BP, BNP, NP, PB or
+  /// HOME_X where X can be one of the BP, BNP, PB.
+ uint8_t body_len; /// number of non-empty lines in the body.
+ char  *title;  /// Title to display on the screen.
+ char *body[TZ_UI_STREAM_CONTENTS_LINES]; /// Body to display on the
+  /// screen (Below title).
 #else
  nbgl_layoutTagValue_t
  pairs[NB_MAX_DISPLAYED_PAIRS_IN_REVIEW]; /// Title-value pairs to be

app/src/ui_strings.h

@@ -27,7 +27,7 @@
  */
 
 #ifdef TARGET_NANOS
-#define BUFF_LEN 120 /// Ring buffer length of nanos
+#define BUFF_LEN 114 /// Ring buffer length of nanos
 #elif defined(HAVE_BAGL)
 #define BUFF_LEN 256 /// Ring buffer length for nanos2/nanox
 #else