| /* Copyright (C) 1996-2014 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 Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* __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 |
