am 09049311: am cfff36df: am a60ff6c5: Merge "libc: Define new symbol visibility macros"
* commit '09049311a229c427f73e3e0ac873bf344b45aaf2':
libc: Define new symbol visibility macros
diff --git a/libc/arch-arm/include/machine/asm.h b/libc/arch-arm/include/machine/asm.h
index 7b8f053..047e54d 100644
--- a/libc/arch-arm/include/machine/asm.h
+++ b/libc/arch-arm/include/machine/asm.h
@@ -97,6 +97,12 @@
#define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
#define ASEND(y) _END(_ASM_LABEL(y))
+#ifdef __ELF__
+#define ENTRY_PRIVATE(y) ENTRY(y); .hidden _C_LABEL(y)
+#else
+#define ENTRY_PRIVATE(y) ENTRY(y)
+#endif
+
#define ASMSTR .asciz
#if defined(__ELF__) && defined(PIC)
diff --git a/libc/arch-x86/include/machine/asm.h b/libc/arch-x86/include/machine/asm.h
index 7a23060..49d3ea8 100644
--- a/libc/arch-x86/include/machine/asm.h
+++ b/libc/arch-x86/include/machine/asm.h
@@ -103,6 +103,12 @@
#define _ENTRY(x) \
.text; _ALIGN_TEXT; .globl x; .type x,@function; x:
+#define _ASM_SIZE(x) .size x, .-x;
+
+#define _END(x) \
+ .fnend; \
+ _ASM_SIZE(x)
+
#ifdef GPROF
# define _PROF_PROLOGUE \
pushl %ebp; movl %esp,%ebp; call PIC_PLT(mcount); popl %ebp
@@ -112,8 +118,12 @@
#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
#define NENTRY(y) _ENTRY(_C_LABEL(y))
+#define END(y) _END(_C_LABEL(y))
#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
+#define ENTRY_PRIVATE(y) ENTRY(y); .hidden _C_LABEL(y)
+
+
#define ALTENTRY(name) .globl _C_LABEL(name); _C_LABEL(name):
#define ASMSTR .asciz
diff --git a/libc/include/sys/cdefs_elf.h b/libc/include/sys/cdefs_elf.h
index 1e57470..0887fa5 100644
--- a/libc/include/sys/cdefs_elf.h
+++ b/libc/include/sys/cdefs_elf.h
@@ -96,9 +96,24 @@
#endif
/* GCC visibility helper macro */
+/* This must be used to tag non-static functions that are private, i.e.
+ * never exposed by the shared library. */
#define __LIBC_HIDDEN__ \
__attribute__ ((visibility ("hidden")))
+/* This must be used to tag non-static functions that are public, i.e.
+ * exposed by the shared library, and part of the stable NDK ABI */
+#define __LIBC_ABI_PUBLIC__ \
+ __attribute__ ((visibility ("default")))
+
+/* This must be used to tag non-static functions that must be exported
+ * by the shared library, but whose implementation is private to the
+ * platform. For now this is equivalent to __LIBC_ABI_PUBLIC__, but we
+ * may want to change this later.
+ */
+#define __LIBC_ABI_PRIVATE__ \
+ __attribute__ ((visibility ("default")))
+
#define __IDSTRING(_n,_s) __SECTIONSTRING(.ident,_s)
#define __RCSID(_s) __IDSTRING(rcsid,_s)