pkg/tlsf: Fix the way system functions are overriden.

pkg/tlsf/Makefile.dep

@@ -0,0 +1,9 @@
+ifneq (,$(filter tlsf-malloc,$(USEMODULE)))
+  ifneq (,$(filter newlib,$(USEMODULE)))
+    USEMODULE += tlsf-malloc_newlib
+  else ifneq (,$(filter native,$(BOARD)))
+    USEMODULE += tlsf-malloc_native
+  else
+    $(warning tlsf-malloc can only be used on native or on platforms using newlib)
+  endif
+endif

pkg/tlsf/Makefile.include

@@ -4,3 +4,12 @@ ifneq (,$(filter tlsf-malloc,$(USEMODULE)))
   INCLUDES += -I$(RIOTPKG)/tlsf/contrib/include
   DIRS += $(RIOTPKG)/tlsf/contrib
 endif
+
+PSEUDOMODULES += tlsf-malloc_newlib
+PSEUDOMODULES += tlsf-malloc_native
+
+ifneq (,$(filter tlsf-malloc_newlib,$(USEMODULE)))
+  UNDEF += $(BINDIR)/tlsf-malloc/newlib.o
+else ifneq (,$(filter tlsf-malloc_native,$(BOARD)))
+  UNDEF += $(BINDIR)/tlsf-malloc/native.o
+endif

pkg/tlsf/contrib/Makefile

@@ -1,3 +1,5 @@
-MODULE := tlsf-malloc
+MODULE = tlsf-malloc
+SUBMODULES = 1
+SRC = tlsf-malloc.c
 
 include $(RIOTBASE)/Makefile.base

pkg/tlsf/contrib/include/tlsf-malloc.h

@@ -37,6 +37,7 @@
 #define TLSF_MALLOC_H
 
 #include <stddef.h>
+
 #include "tlsf.h"
 
 #ifdef __cplusplus
@@ -86,7 +87,7 @@ int tlsf_add_global_pool(void *mem, size_t bytes);
  *
  * Use for debugging purposes only.
  */
-tlsf_t *_tlsf_get_global_control(void);
+tlsf_t _tlsf_get_global_control(void);
 
 
 #ifdef __cplusplus

pkg/tlsf/contrib/native.c

@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2019 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+/**
+ * @ingroup  pkg_tlsf_malloc
+ * @ingroup  pkg
+ * @ingroup  sys
+ * @{
+ * @file
+ *
+ * @brief   Definitions to use tlsf as malloc on native.
+ * @author  Juan I Carrano
+ *
+ * This assumes glibc is bein used.
+ * see: https://www.gnu.org/software/libc/manual/html_node/Replacing-malloc.html
+ *
+ */
+
+#include <string.h>
+#include <errno.h>
+
+#include "irq.h"
+#include "tlsf.h"
+#include "tlsf-malloc.h"
+#include "tlsf-malloc-internal.h"
+
+/* TODO: Add defines for other compilers */
+#if defined(__GNUC__) && !defined(__clang__)    /* Clang supports __GNUC__ but
+                                                 * not the alloc_size()
+                                                 * attribute */
+
+#define ATTR_MALLOC  __attribute__((malloc, alloc_size(1)))
+#define ATTR_CALLOC  __attribute__((malloc, alloc_size(1,2)))
+#define ATTR_MALIGN  __attribute__((alloc_align(1), alloc_size(2), malloc))
+#define ATTR_REALLOC  __attribute__((alloc_size(2)))
+
+#else /* No GNU C -> no alias attribute */
+
+#define ATTR_MALLOC
+#define ATTR_CALLOC
+#define ATTR_MALIGN
+#define ATTR_REALLOC
+
+#endif /* __GNUC__ */
+
+extern tlsf_t tlsf_malloc_gheap;
+
+/**
+ * Allocate a block of size "bytes"
+ */
+ATTR_MALLOC void *malloc(size_t bytes)
+{
+    unsigned old_state = irq_disable();
+    void *result = tlsf_malloc(tlsf_malloc_gheap, bytes);
+
+    if (result == NULL) {
+        errno = ENOMEM;
+    }
+
+    irq_restore(old_state);
+    return result;
+}
+
+/**
+ * Allocate and clear a block of size "bytes*count"
+ */
+ATTR_CALLOC void *calloc(size_t count, size_t bytes)
+{
+    void *result = malloc(count * bytes);
+
+    if (result != NULL) {
+        memset(result, 0, count * bytes);
+    }
+    return result;
+}
+
+/**
+ * Allocate an aligned memory block.
+ */
+ATTR_MALIGN void *memalign(size_t align, size_t bytes)
+{
+    unsigned old_state = irq_disable();
+    void *result = tlsf_memalign(tlsf_malloc_gheap, align, bytes);
+
+    if (result == NULL) {
+        errno = ENOMEM;
+    }
+
+    irq_restore(old_state);
+    return result;
+}
+
+/**
+ * Deallocate and reallocate with a different size.
+ */
+ATTR_REALLOC void *realloc(void *ptr, size_t size)
+{
+    unsigned old_state = irq_disable();
+    void *result = tlsf_realloc(tlsf_malloc_gheap, ptr, size);
+
+    if (result == NULL) {
+        errno = ENOMEM;
+    }
+
+    irq_restore(old_state);
+    return result;
+}
+
+
+/**
+ * Deallocate a block of data.
+ */
+void free(void *ptr)
+{
+    unsigned old_state = irq_disable();
+
+    tlsf_free(tlsf_malloc_gheap, ptr);
+    irq_restore(old_state);
+}

pkg/tlsf/contrib/newlib.c

@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2019 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+/**
+ * @ingroup  pkg_tlsf_malloc
+ * @ingroup  pkg
+ * @ingroup  sys
+ * @{
+ * @file
+ *
+ * @brief   Reentrant definitions to replace newlib's malloc with TLSF.
+ * @author  Juan I Carrano
+ *
+ * Newlib-nano implements malloc/free/etc in terms of the reentrant definitions
+ * in _malloc_r/_free_r/etc so the latter are the one that have to be
+ * overwritten.
+ *
+ */
+
+#include <string.h>
+#include <reent.h>
+#include <errno.h>
+
+#include "irq.h"
+#include "tlsf.h"
+#include "tlsf-malloc.h"
+#include "tlsf-malloc-internal.h"
+
+
+/* TODO: Add defines for other compilers */
+#if defined(__GNUC__) && !defined(__clang__)    /* Clang supports __GNUC__ but
+                                                 * not the alloc_size()
+                                                 * attribute */
+
+#define ATTR_MALLOCR  __attribute__((malloc, alloc_size(2)))
+#define ATTR_CALLOCR  __attribute__((malloc, alloc_size(2,3)))
+#define ATTR_MALIGNR  __attribute__((alloc_align(2), alloc_size(3), malloc))
+#define ATTR_REALLOCR  __attribute__((alloc_size(3)))
+
+#else /* No GNU C -> no alias attribute */
+
+#define ATTR_MALLOCR
+#define ATTR_CALLOCR
+#define ATTR_MALIGNR
+#define ATTR_REALLOCR
+
+#endif /* __GNUC__ */
+
+/**
+ * Allocate a block of size "bytes"
+ */
+ATTR_MALLOCR void *_malloc_r(struct _reent *reent_ptr, size_t bytes)
+{
+    unsigned old_state = irq_disable();
+    void *result = tlsf_malloc(tlsf_malloc_gheap, bytes);
+
+    if (result == NULL) {
+        reent_ptr->_errno = ENOMEM;
+    }
+
+    irq_restore(old_state);
+    return result;
+}
+
+/**
+ * Allocate and clear a block of size "bytes*count"
+ */
+ATTR_CALLOCR void *_calloc_r(struct _reent *reent_ptr, size_t count, size_t bytes)
+{
+    void *result = _malloc_r(reent_ptr, count * bytes);
+
+    if (result != NULL) {
+        memset(result, 0, count * bytes);
+    }
+    return result;
+}
+
+/**
+ * Allocate an aligned memory block.
+ */
+ATTR_MALIGNR void *_memalign_r(struct _reent *reent_ptr, size_t align, size_t bytes)
+{
+    unsigned old_state = irq_disable();
+    void *result = tlsf_memalign(tlsf_malloc_gheap, align, bytes);
+
+    if (result == NULL) {
+        reent_ptr->_errno = ENOMEM;
+    }
+
+    irq_restore(old_state);
+    return result;
+}
+
+/**
+ * Deallocate and reallocate with a different size.
+ */
+ATTR_REALLOCR void *_realloc_r(struct _reent *reent_ptr, void *ptr, size_t size)
+{
+    unsigned old_state = irq_disable();
+    void *result = tlsf_realloc(tlsf_malloc_gheap, ptr, size);
+
+    if (result == NULL) {
+        reent_ptr->_errno = ENOMEM;
+    }
+
+    irq_restore(old_state);
+    return result;
+}
+
+/**
+ * Deallocate a block of data.
+ */
+void _free_r(struct _reent *reent_ptr, void *ptr)
+{
+    unsigned old_state = irq_disable();
+    (void)reent_ptr;
+
+    tlsf_free(tlsf_malloc_gheap, ptr);
+    irq_restore(old_state);
+}
+
+/**
+ * @}
+ */

pkg/tlsf/contrib/tlsf-malloc-internal.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2014-2018 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+/**
+ * @ingroup  pkg_tlsf_malloc
+ * @{
+ * @file
+ * @internal
+ *
+ * @brief   TLSF/malloc internal definitions
+ * @author  Juan I Carrano
+ *
+ */
+
+#ifndef TLSF_MALLOC_INTERNAL_H
+#define TLSF_MALLOC_INTERNAL_H
+
+#include "tlsf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern tlsf_t tlsf_malloc_gheap;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TLSF_MALLOC_INTERNAL_H */