Handle AVRMEM_ALIAS

Aliases are interesting for generic vs. datasheet names of
avrX fuses

src/libavrdude.i

@@ -159,6 +159,10 @@ AVRMEM *ldata_avrmem(LNODEID p) {
   return (AVRMEM *)ldata(p);
 }
 
+AVRMEM_ALIAS *ldata_avrmem_alias(LNODEID p) {
+  return (AVRMEM_ALIAS *)ldata(p);
+}
+
 const char *ldata_string(LNODEID p) {
   return (const char *)ldata(p);
 }
@@ -249,6 +253,7 @@ const char *pgmid;
 typedef void * LNODEID;
 typedef void * LISTID;
 typedef struct avrmem AVRMEM;
+typedef struct avrmem_alias AVRMEM_ALIAS;
 typedef struct programmer_t PROGRAMMER;
 typedef void pgm_initpgm(PROGRAMMER*);
 
@@ -328,6 +333,13 @@ typedef struct avrmem {
   unsigned char * buf;        /* pointer to memory buffer */
 } AVRMEM;
 
+%immutable;
+typedef struct avrmem_alias {
+  const char *desc;           /* alias name ("syscfg0" etc.) */
+  AVRMEM *aliased_mem;
+} AVRMEM_ALIAS;
+%mutable;
+
 %extend avrmem {
 %feature("autodoc", "m.get(len: int, offset: int = 0) => return bytes; Read from memory buffer") get;
   PyObject *get(unsigned int len, unsigned int offset = 0) {
@@ -604,12 +616,17 @@ AVRPART *ldata_avrpart(LNODEID);
 %feature("autodoc", "LNODEID -> AVRMEM*") ldata_avrmem;
 AVRMEM *ldata_avrmem(LNODEID);
 
+%feature("autodoc", "LNODEID -> AVRMEM_ALIAS*") ldata_avrmem_alias;
+AVRMEM_ALIAS *ldata_avrmem_alias(LNODEID);
+
 %feature("autodoc", "LNODEID -> str") ldata_string;
 const char *ldata_string(LNODEID);
 
 // AVRMEM and AVRPART handling
 AVRMEM * avr_locate_mem(const AVRPART *p, const char *desc);
 AVRPART * locate_part(const LISTID parts, const char *partdesc);
+AVRMEM_ALIAS * avr_locate_memalias(const AVRPART *p, const char *desc);
+AVRMEM_ALIAS * avr_find_memalias(const AVRPART *p, const AVRMEM *m_orig);
 
 // Programming modes for parts and programmers: reflect changes in lexer.l, developer_opts.c and config.c
 #define PM_SPM                1 // Bootloaders, self-programming with SPM opcodes or NVM Controllers

src/python/swigtest.py

@@ -27,6 +27,13 @@
 # l=dissect_fuse(cfg, 'lfuse', 0xe0)
 # hex(synthesize_fuse(cfg, 'lfuse', l))
 
+# for AVR parts with aliased mem (avrX):
+# ad.avr_locate_memalias(p, 'wdtcfg').aliased_mem.desc
+# alist = ad.lfirst(p.mem_alias)
+# ad.ldata_avrmem_alias(alist).desc
+# ad.ldata_avrmem_alias(alist).aliased_mem.desc
+# alist = ad.lnext(alist) # ...
+
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 # the Free Software Foundation; either version 2 of the License, or