Changeset 15854f1 in buchla-68k

Timestamp:

08/06/2017 08:44:54 PM (7 years ago)

Author:

Thomas Lopatic <thomas@…>

Branches:

master

Children:

84c0125

Parents:

cc2c9e0

Message:

Don't rewrite symbols.

Files:

• Makefile (modified) (9 diffs)
• misc/rewrite.txt (deleted)
• readme.txt (modified) (1 diff)

Makefile

@@ -14 +14 @@
 # hand-written assembly language code
 
-FLAGS_COM :=    $(FLAGS) -mshort -std=c99 -fleading-underscore -ffreestanding \
-                                -nostdinc -fno-strict-aliasing -fno-inline -fno-omit-frame-pointer \
+FLAGS_COM :=    $(FLAGS) -mshort -std=c99 -ffreestanding -nostdinc \
+                                -fno-strict-aliasing -fno-inline -fno-omit-frame-pointer \
                                 -Wpedantic -Wconversion -Wsign-conversion -Wshadow \
                                 -Wstrict-prototypes -Wmissing-declarations -Wredundant-decls \
@@ -41 +41 @@
 build/%.o:              prolog/%.c $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_COM) -c -o $@ $<
-                                $(CROSS_OBJC) --redefine-syms misc/rewrite.txt $@
 
 build/%.o:              prolog/%.s $(HEADERS) | build
@@ -65 +64 @@
 build/%.o:              libcio/%.c $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_COM) -c -o $@ $<
-                                $(CROSS_OBJC) --redefine-syms misc/rewrite.txt $@
 
 build/%.o:              libcio/%.s $(HEADERS) | build
@@ -88 +86 @@
 build/%.o:              vlib/%.c $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_COM) -c -o $@ $<
-                                $(CROSS_OBJC) --redefine-syms misc/rewrite.txt $@
 
 build/%.o:              vlib/%.s $(HEADERS) | build
@@ -106 +103 @@
 build/%.o:              iolib/%.c $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_COM) -c -o $@ $<
-                                $(CROSS_OBJC) --redefine-syms misc/rewrite.txt $@
 
 build/%.o:              iolib/%.s $(HEADERS) | build
@@ -126 +122 @@
 build/%.o:              libsm/%.c $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_COM) -c -o $@ $<
-                                $(CROSS_OBJC) --redefine-syms misc/rewrite.txt $@
 
 libsm.a:                $(LIBSM_OBJ)
@@ -143 +138 @@
 build/%.o:              lib700/%.c $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_COM) -c -o $@ $<
-                                $(CROSS_OBJC) --redefine-syms misc/rewrite.txt $@
 
 build/%.o:              lib700/%.s $(HEADERS) | build
@@ -167 +161 @@
 build/%.o:              rom/%.c $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_COM) -c -o $@ $<
-                                $(CROSS_OBJC) --redefine-syms misc/rewrite.txt $@
 
 build/%.o:              rom/%.s $(HEADERS) | build
@@ -217 +210 @@
 build/%.o:              ram/%.c $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_COM) -c -o $@ $<
-                                $(CROSS_OBJC) --redefine-syms misc/rewrite.txt $@
 
 build/%.o:              ram/%.s $(HEADERS) | build

readme.txt

@@ -232 +232 @@
     functions to preserve A2 and D2, so that GCC code generation can
     use all registers.
-
-  * The hand-written assembly language code expects C function names
-    to be prefixed with an underscore. That's why we pass the
-    -fleading-underscore option to GCC. However, this breaks linking
-    with libgcc, which doesn't use leading underscores.
-
-    Currently, we work around this issue by stripping the leading
-    underscore from references to libgcc functions using objcopy. See
-    misc/rewrite.txt for the function name mapping.
-
-    Ultimately, we should fix any references to C functions in the
-    hand-written assembly language code.