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// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file defines macros to handle the output of the shlib-symbols
// script (run without the -a switch). These macros generate assembly
// code that should define symbols in a DSO such that the resultant DSO
// has the same ABI as the DSO input to shlib-symbols.
#define FUNCTION(NAME, SIZE) FUNCTION_1(global, NAME)
#define WEAK_FUNCTION(NAME, SIZE) FUNCTION_1(weak, NAME)
#define FUNCTION_1(BINDING, NAME) \
.pushsection.text, "ax", % progbits; \
.BINDING NAME; \
.type NAME, % function; \
NAME: \
.space 1; \
.popsection
#define OBJECT_1(SECTION, SECFLAGS, SECTYPE, BINDING, NAME, SIZE) \
.pushsection SECTION, SECFLAGS, % SECTYPE; \
.BINDING NAME; \
.type NAME, % object; \
NAME: \
.space SIZE; \
.size NAME, SIZE; \
.popsection
#define RODATA_OBJECT(NAME, SIZE) OBJECT_1(.rodata, "a", progbits, global, NAME, SIZE)
#define DATA_OBJECT(NAME, SIZE) OBJECT_1(.data, "aw", progbits, global, NAME, SIZE)
#define WEAK_DATA_OBJECT(NAME, SIZE) OBJECT_1(.data, "aw", progbits, weak, NAME, SIZE)
#define BSS_OBJECT(NAME, SIZE) OBJECT_1(.bss, "aw", nobits, global, NAME, SIZE)
#define UNDEFINED_WEAK(NAME, SIZE) UNDEFINED_1(weak, NAME)
#define UNDEFINED(NAME, SIZE) UNDEFINED_1(globl, NAME)
#define UNDEFINED_1(BINDING, NAME) \
.pushsection.undefined, "aw", % progbits; \
.BINDING NAME; \
.dc.a NAME; \
.popsection