projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 1996-2016 Free Software Foundation, Inc. |
| 8a9cbf0d | 2 | Contributed by David Mosberger (davidm@cs.arizona.edu). |
| db31c863 | 3 | This file is part of the GNU C Library. |
| 8a9cbf0d | 4 | |
| db31c863 | 5 | The GNU C Library is free software; you can redistribute it and/or |
| 3214b89b AJ |
6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 8a9cbf0d | 9 | |
| db31c863 UD |
10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 3214b89b | 13 | Lesser General Public License for more details. |
| 8a9cbf0d | 14 | |
| 3214b89b | 15 | You should have received a copy of the GNU Lesser General Public |
| ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 8a9cbf0d RM |
18 | |
| 19 | /* __bb_init_func is invoked at the beginning of each function, before | |
| db31c863 UD |
20 | any registers have been saved. It is therefore safe to use any |
| 21 | caller-saved (call-used) registers (except for argument registers | |
| 22 | a1-a5). */ | |
| 8a9cbf0d RM |
23 | |
| 24 | #include <sysdep.h> | |
| 8a9cbf0d RM |
25 | |
| 26 | /* | |
| 27 | * These offsets should match with "struct bb" declared in gcc/libgcc2.c. | |
| 28 | */ | |
| 29 | #define ZERO_WORD 0x00 | |
| 30 | #define NEXT 0x20 | |
| 31 | ||
| 32 | .set noat | |
| 33 | .set noreorder | |
| 34 | ||
| 35 | ENTRY(__bb_init_func) | |
| 24c177a0 RM |
36 | .prologue 0 |
| 37 | ||
| 8a9cbf0d RM |
38 | ldq t0, ZERO_WORD(a0) /* t0 <- blocks->zero_word */ |
| 39 | beq t0, init /* not initialized yet -> */ | |
| 40 | ret | |
| b870eeda | 41 | |
| dd8dd50f | 42 | END(__bb_init_func) |
| 24c177a0 | 43 | |
| b870eeda | 44 | .ent init |
| dd8dd50f RM |
45 | init: |
| 46 | .frame sp, 0x38, ra, 0 | |
| 24c177a0 RM |
47 | subq sp, 0x38, sp |
| 48 | .prologue 0 | |
| 8a9cbf0d | 49 | |
| 8a9cbf0d RM |
50 | stq pv, 0x30(sp) |
| 51 | br pv, 1f | |
| 52 | 1: ldgp gp, 0(pv) | |
| 53 | ||
| 49aebbc6 | 54 | ldiq t1, __bb_head |
| 8a9cbf0d RM |
55 | lda t3, _gmonparam |
| 56 | ldq t2, 0(t1) | |
| 57 | ldl t3, 0(t3) /* t3 = _gmonparam.state */ | |
| 49aebbc6 | 58 | lda t0, 1 |
| 8a9cbf0d RM |
59 | stq t0, ZERO_WORD(a0) /* blocks->zero_word = 1 */ |
| 60 | stq t2, NEXT(a0) /* blocks->next = __bb_head */ | |
| 61 | stq a0, 0(t1) | |
| b870eeda UD |
62 | bne t2, $leave |
| 63 | beq t3, $leave /* t3 == GMON_PROF_ON? yes -> */ | |
| 8a9cbf0d RM |
64 | |
| 65 | /* also need to initialize destructor: */ | |
| 66 | stq ra, 0x00(sp) | |
| 67 | lda a0, __bb_exit_func | |
| 68 | stq a1, 0x08(sp) | |
| 69 | lda pv, atexit | |
| 70 | stq a2, 0x10(sp) | |
| 71 | stq a3, 0x18(sp) | |
| 72 | stq a4, 0x20(sp) | |
| 73 | stq a5, 0x28(sp) | |
| 74 | jsr ra, (pv), atexit | |
| 75 | ldq ra, 0x00(sp) | |
| 76 | ldq a1, 0x08(sp) | |
| 77 | ldq a2, 0x10(sp) | |
| 78 | ldq a3, 0x18(sp) | |
| 79 | ldq a4, 0x20(sp) | |
| 80 | ldq a5, 0x28(sp) | |
| 81 | ||
| b870eeda | 82 | $leave: ldq pv, 0x30(sp) |
| 8a9cbf0d RM |
83 | addq sp, 0x38, sp |
| 84 | ret | |
| 24c177a0 | 85 | |
| b870eeda | 86 | .end init |