mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-16 10:00:12 +00:00
88 lines
2.2 KiB
ArmAsm
88 lines
2.2 KiB
ArmAsm
/* Copyright (C) 1996, 1997 Free Software Foundation, Inc.
|
|
Contributed by David Mosberger (davidm@cs.arizona.edu).
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* __bb_init_func is invoked at the beginning of each function, before
|
|
any registers have been saved. It is therefore safe to use any
|
|
caller-saved (call-used) registers (except for argument registers
|
|
a1-a5). */
|
|
|
|
#include <sysdep.h>
|
|
|
|
/*
|
|
* These offsets should match with "struct bb" declared in gcc/libgcc2.c.
|
|
*/
|
|
#define ZERO_WORD 0x00
|
|
#define NEXT 0x20
|
|
|
|
.set noat
|
|
.set noreorder
|
|
|
|
ENTRY(__bb_init_func)
|
|
.prologue 0
|
|
|
|
ldq t0, ZERO_WORD(a0) /* t0 <- blocks->zero_word */
|
|
beq t0, init /* not initialized yet -> */
|
|
ret
|
|
|
|
END(__bb_init_func)
|
|
|
|
.ent init
|
|
init:
|
|
.frame sp, 0x38, ra, 0
|
|
subq sp, 0x38, sp
|
|
.prologue 0
|
|
|
|
stq pv, 0x30(sp)
|
|
br pv, 1f
|
|
1: ldgp gp, 0(pv)
|
|
|
|
ldiq t1, __bb_head
|
|
lda t3, _gmonparam
|
|
ldq t2, 0(t1)
|
|
ldl t3, 0(t3) /* t3 = _gmonparam.state */
|
|
lda t0, 1
|
|
stq t0, ZERO_WORD(a0) /* blocks->zero_word = 1 */
|
|
stq t2, NEXT(a0) /* blocks->next = __bb_head */
|
|
stq a0, 0(t1)
|
|
bne t2, $leave
|
|
beq t3, $leave /* t3 == GMON_PROF_ON? yes -> */
|
|
|
|
/* also need to initialize destructor: */
|
|
stq ra, 0x00(sp)
|
|
lda a0, __bb_exit_func
|
|
stq a1, 0x08(sp)
|
|
lda pv, atexit
|
|
stq a2, 0x10(sp)
|
|
stq a3, 0x18(sp)
|
|
stq a4, 0x20(sp)
|
|
stq a5, 0x28(sp)
|
|
jsr ra, (pv), atexit
|
|
ldq ra, 0x00(sp)
|
|
ldq a1, 0x08(sp)
|
|
ldq a2, 0x10(sp)
|
|
ldq a3, 0x18(sp)
|
|
ldq a4, 0x20(sp)
|
|
ldq a5, 0x28(sp)
|
|
|
|
$leave: ldq pv, 0x30(sp)
|
|
addq sp, 0x38, sp
|
|
ret
|
|
|
|
.end init
|