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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2021 Tintri by DDN, Inc. All rights reserved.
* Copyright 2021 Toomas Soome <tsoome@me.com>
*/
/*
* Get the stack at entry and call a function with it as an argument.
*/
.file "stack_sparc.s"
#include <sys/asm_linkage.h>
/*
* void
* get_stack_at_entry(test_ctx_t *ctx)
*
* ctx+0 is void (*)(uintptr_t stack, char *text),
* and ctx+4 is the 'text' argument.
*
* Passes the stack pointer prior to the invoking call instruction
* to the specified function.
*/
ENTRY(get_stack_at_entry)
save %sp, -SA(MINFRAME), %sp
st %i0, [%fp + STACK_BIAS + ARGPUSHSIZE]
ld [%fp + STACK_BIAS + ARGPUSHSIZE], %g1
ld [%g1], %g1 /* func */
ld [%fp + STACK_BIAS + ARGPUSHSIZE], %g2
ld [%g2 + 4], %g2 /* text */
mov %g2, %o1
call %g1, 0
add %sp, STACK_BIAS, %o0
ret
restore
SET_SIZE(get_stack_at_entry)
/*
* void
* get_stack_at_init(void)
*
* Passes the stack pointer prior to the invoking call instruction
* to initarray() (defined elsewhere).
* Tests alignment in section .init_array.
*/
ENTRY(get_stack_at_init)
save %sp, -SA(MINFRAME), %sp
call initarray, 0
add %sp, STACK_BIAS, %o0
ret
restore
SET_SIZE(get_stack_at_init)
/*
* Passes the stack pointer during init to initmain() (defined elsewhere).
* Tests alignment in section .init.
*/
.section ".init"
call initmain, 0
add %sp, STACK_BIAS, %o0
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