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/*
* Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef CONSOLE_MACROS_S
#define CONSOLE_MACROS_S
#include <drivers/console.h>
/*
* This macro encapsulates the common setup that has to be done at the end of
* a console driver's register function. It will register all of the driver's
* callbacks in the console_t structure and initialize the flags field (by
* default consoles are enabled for the "boot" and "crash" states, this can be
* changed after registration with the console_set_scope() function). It ends
* with a tail call that will include return to the caller.
* REQUIRES console_t pointer in r0 and a valid return address in lr.
*/
.macro finish_console_register _driver, putc=0, getc=0, flush=0
/*
* If any of the callback is not specified or set as 0, then the
* corresponding callback entry in console_t is set to 0.
*/
.ifne \putc
ldr r1, =console_\_driver\()_putc
.else
mov r1, #0
.endif
str r1, [r0, #CONSOLE_T_PUTC]
/*
* If ENABLE_CONSOLE_GETC support is disabled, but a getc callback is
* specified nonetheless, the assembler will abort on encountering the
* CONSOLE_T_GETC macro, which is undefined.
*/
.ifne \getc
ldr r1, =console_\_driver\()_getc
str r1, [r0, #CONSOLE_T_GETC]
.else
#if ENABLE_CONSOLE_GETC
mov r1, #0
str r1, [r0, #CONSOLE_T_GETC]
#endif
.endif
.ifne \flush
ldr r1, =console_\_driver\()_flush
.else
mov r1, #0
.endif
str r1, [r0, #CONSOLE_T_FLUSH]
mov r1, #(CONSOLE_FLAG_BOOT | CONSOLE_FLAG_CRASH)
str r1, [r0, #CONSOLE_T_FLAGS]
b console_register
.endm
#endif /* CONSOLE_MACROS_S */
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