Add sample linker configurations for Atari binary output in C.

[cc65] / cfg / atari-c-xex.cfg

diff --git a/cfg/atari-c-xex.cfg b/cfg/atari-c-xex.cfg
new file mode 100644 (file)
index 0000000..5f390e1
--- /dev/null
+++ b/cfg/atari-c-xex.cfg
@@ -0,0 +1,56 @@
+# Sample linker configuration for C programs using the Atari binary file support.
+# Use with: cl65 -tatari -Catari-c-xex.cfg prog.c -o prog.xex
+FEATURES {
+    STARTADDRESS: default = $2000;
+}
+SYMBOLS {
+    __SYSTEM_CHECK__:    type = import;  # force inclusion of "system check" load chunk
+    __STACKSIZE__:       type = weak, value = $0800; # 2k stack
+    __STARTADDRESS__:    type = export, value = %S;
+    __RESERVED_MEMORY__: type = weak, value = $0000;
+    __SYSCHKHDR__:       type = export, value = 0; # Disable system check header
+    __SYSCHKTRL__:       type = export, value = 0; # Disable system check trailer
+}
+MEMORY {
+    ZP:         file = "", define = yes, start = $0082, size = $007E;
+# "system check" load chunk
+    SYSCHKCHNK: file = %O,               start = $2E00, size = $0300;
+# "main program" load chunk
+    MAIN:       file = %O, define = yes, start = %S,    size = $BC20 - __STACKSIZE__ - __RESERVED_MEMORY__ - %S;
+}
+FILES {
+    %O: format = atari;
+}
+FORMATS {
+    atari: runad = start,
+           initad = SYSCHKCHNK: __SYSTEM_CHECK__;
+}
+SEGMENTS {
+    ZEROPAGE:  load = ZP,         type = zp;
+    EXTZP:     load = ZP,         type = zp,                optional = yes;
+    SYSCHK:    load = SYSCHKCHNK, type = rw,  define = yes, optional = yes;
+    STARTUP:   load = MAIN,       type = ro,  define = yes;
+    LOWBSS:    load = MAIN,       type = rw,                optional = yes;  # not zero initialized
+    LOWCODE:   load = MAIN,       type = ro,  define = yes, optional = yes;
+    ONCE:      load = MAIN,       type = ro,                optional = yes;
+    CODE:      load = MAIN,       type = ro,  define = yes;
+    RODATA:    load = MAIN,       type = ro;
+    DATA:      load = MAIN,       type = rw;
+    INIT:      load = MAIN,       type = rw,                optional = yes;
+    BSS:       load = MAIN,       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__;
+}