add rp6502 target

2023-11-16 18:46:16 -08:00
parent d7d1d89698
commit b17c4d3434
37 changed files with 1253 additions and 0 deletions
--- a/cfg/rp6502.cfg
+++ b/cfg/rp6502.cfg
@@ -0,0 +1,42 @@
+#
+# Copyright (c) 2023 Rumbledethumps
+#
+# SPDX-License-Identifier: Zlib
+# SPDX-License-Identifier: BSD-3-Clause
+# SPDX-License-Identifier: Unlicense
+#
+
+SYMBOLS {
+    __STARTUP__:   type = import;
+    __STACKSIZE__: type = weak, value = $0800;
+}
+MEMORY {
+    ZP:       file = "", define = yes, start = $0000, size = $0100;
+    CPUSTACK: file = "",               start = $0100, size = $0100;
+    RAM:      file = %O, define = yes, start = $0200, size = $FD00 - __STACKSIZE__;
+}
+SEGMENTS {
+    ZEROPAGE: load = ZP,     type = zp;
+    STARTUP:  load = RAM,    type = ro;
+    LOWCODE:  load = RAM,    type = ro,  optional = yes;
+    ONCE:     load = RAM,    type = ro,  optional = yes;
+    CODE:     load = RAM,    type = ro;
+    RODATA:   load = RAM,    type = ro;
+    DATA:     load = RAM,    type = rw,  define   = yes;
+    BSS:      load = RAM,    type = bss, define   = yes;
+}
+FEATURES {
+    CONDES: type    = constructor,
+            label   = __CONSTRUCTOR_TABLE__,
+            count   = __CONSTRUCTOR_COUNT__,
+            segment = ONCE;
+    CONDES: type    = destructor,
+            label   = __DESTRUCTOR_TABLE__,
+            count   = __DESTRUCTOR_COUNT__,
+            segment = RODATA;
+    CONDES: type    = interruptor,
+            label   = __INTERRUPTOR_TABLE__,
+            count   = __INTERRUPTOR_COUNT__,
+            segment = RODATA,
+            import  = __CALLIRQ__;
+}