liballoc-c

commit c4011ee8089f2f0680d44670c59381dd9bed3987
Author: Louis Burda <quent.burda@gmail.com>
Date:   Mon, 12 Sep 2022 15:57:41 +0200

Stash progress

Diffstat:
A
.gitignore
 | 
5
+++++
A
Makefile
 | 
41
+++++++++++++++++++++++++++++++++++++++++
A
include/alloc.h
 | 
9
+++++++++
A
liballoc.api
 | 
2
++
A
liballoc.lds
 | 
7
+++++++
A
src/alloc.c
 | 
16
++++++++++++++++
A
src/test.c
 | 
11
+++++++++++

7 files changed, 91 insertions(+), 0 deletions(-)
diff --git a/.gitignore b/.gitignore
@@ -0,0 +1,5 @@
+compile_commands.json
+build
+.cache
+vgcore*
+test
diff --git a/Makefile b/Makefile
@@ -0,0 +1,41 @@
+CFLAGS = -I include
+LDLIBS =
+DEPFLAGS = -MT $@ -MMD -MP -MF build/$*.d
+
+_SRCS = alloc.c
+SRCS = $(_SRCS:%.c=src/%.c)
+OBJS = $(_SRCS:%.c=build/%.o)
+DEPS = $(_SRCS:%.c=build/%.d)
+PI_OBJS = $(_SRCS:%.c=build/%.pi.o)
+
+.PHONY: all clean
+
+all: build/liballoc.so build/liballoc.a # build/test
+
+clean:
+	rm -rf build
+
+build:
+	mkdir build
+
+build/%.o: src/%.c build/%.d | build
+	$(CC) -c -o $@ $< $(DEPFLAGS) $(CFLAGS)
+
+build/%.pi.o: src/%.c build/%.d | build
+	$(CC) -c -o $@ $< $(DEPFLAGS) $(CFLAGS) -fPIC
+
+build/%.d: | build;
+
+include $(DEPS)
+
+build/liballoc.a: $(OBJS) $(LIBLIST_A) | build
+	$(CC) -o build/tmp.o $^ $(CFLAGS) -r
+	objcopy --keep-global-symbols=liballoc.api build/tmp.o build/fixed.o
+	ar rcs $@ build/fixed.o
+
+build/liballoc.so: $(PI_OBJS) $(LIBLIST_SO) | build
+	$(CC) -o $@ $(PI_OBJS) $(CFLAGS) -shared -Wl,-version-script liballoc.lds
+
+# build/test: src/test.c build/liballoc.a | build
+# 	$(CC) -o $@ $^ -I include
+
diff --git a/include/alloc.h b/include/alloc.h
@@ -0,0 +1,9 @@
+#include <stdlib.h>
+
+struct allocator {
+	void *(*alloc)(size_t size);
+	void (*free)(void *p);
+};
+
+extern struct allocator stack_allocator;
+extern struct allocator heap_allocator;
diff --git a/liballoc.api b/liballoc.api
@@ -0,0 +1,2 @@
+stack_allocator
+heap_allocator
diff --git a/liballoc.lds b/liballoc.lds
@@ -0,0 +1,7 @@
+LIBALLOC_1.0 {
+	global:
+		stack_allocator;
+		heap_allocator;
+	local:
+		*;
+};
diff --git a/src/alloc.c b/src/alloc.c
@@ -0,0 +1,16 @@
+#include "alloc.h"
+
+#include <stdlib.h>
+#include <alloca.h>
+
+static void stub() {};
+
+struct allocator stack_allocator = {
+	.alloc = alloca,
+	.free = stub
+};
+
+struct allocator heap_allocator = {
+	.alloc = malloc,
+	.free = free
+};
diff --git a/src/test.c b/src/test.c
@@ -0,0 +1,11 @@
+#include "alloc.h"
+
+void *test_alloc(struct allocator *ator);
+
+int
+main(int argc, const char **argv)
+{
+	struct test *test;
+
+	test = test_alloc(&stack_allocator);
+}