| yuezonghe | 824eb0c | 2024-06-27 02:32:26 -0700 | [diff] [blame^] | 1 | ; |
| 2 | ; Port of uClibc for TMS320C6000 DSP architecture |
| 3 | ; Copyright (C) 2004 Texas Instruments Incorporated |
| 4 | ; Author of TMS320C6000 port: Aurelien Jacquiot |
| 5 | ; |
| 6 | ; This program is free software; you can redistribute it and/or modify it |
| 7 | ; under the terms of the GNU Library General Public License as published by |
| 8 | ; the Free Software Foundation; either version 2 of the License, or (at your |
| 9 | ; option) any later version. |
| 10 | ; |
| 11 | ; This program is distributed in the hope that it will be useful, but WITHOUT |
| 12 | ; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License |
| 14 | ; for more details. |
| 15 | ; |
| 16 | ; You should have received a copy of the GNU Library General Public License |
| 17 | ; along with this program; if not, write to the Free Software Foundation, |
| 18 | ; Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | ; |
| 20 | |
| 21 | .global setjmp |
| 22 | setjmp: |
| 23 | #if 0 |
| 24 | .if 1 /* was: .if (CONFIG_UCLIBC_SHARED == 0) */ |
| 25 | |
| 26 | MVKL .S1 ___curr_eh_stack_entry,A6 |
| 27 | || SUB .D1X A4,B15,A3 |
| 28 | MVKH .S1 ___curr_eh_stack_entry,A6 |
| 29 | || CMPGT .L1 A3,4,A0 ; A0 set if C++ exceptions case |
| 30 | |
| 31 | LDW .D1T1 *A6,A2 |
| 32 | .else |
| 33 | MVKL .S2 (___curr_eh_stack_entry - $bss)/4,B6 |
| 34 | || SUB .D1X A4,B15,A3 |
| 35 | MVKH .S2 (___curr_eh_stack_entry - $bss)/4,B6 |
| 36 | || CMPGT .L1 A3,4,A0 ; A0 set if C++ exceptions case |
| 37 | |
| 38 | LDW .D2T1 *+B14[B6],A2 |
| 39 | .endif |
| 40 | NOP |
| 41 | #else |
| 42 | MVK .S1 0, A0 |
| 43 | #endif |
| 44 | |
| 45 | MVK .L2 1,B4 ; indicate to ___sigjmp_save to save signal mask |
| 46 | || MV .D2X A4,B6 ; jmp_buf address |
| 47 | || STW .D1T2 B3,*+A4(48) ; return address |
| 48 | |
| 49 | ADDAW .D1 A2,2,A2 |
| 50 | [A0] CMPEQ .L1 A4,A2,A0 ; A0 set if C++ exceptions case |
| 51 | |
| 52 | STW .D1T1 A10,*+A4(0) |
| 53 | || STW .D2T2 B10,*+B6(4) |
| 54 | ||[!A0] B .S1 __sigjmp_save ; branch to ___sigjmp_save in 5 cycles |
| 55 | ||[A0] B .S2 B3 |
| 56 | |
| 57 | STW .D1T1 A11,*+A4(8) |
| 58 | || STW .D2T2 B11,*+B6(12) |
| 59 | STW .D1T1 A12,*+A4(16) |
| 60 | || STW .D2T2 B12,*+B6(20) |
| 61 | STW .D1T1 A13,*+A4(24) |
| 62 | || STW .D2T2 B13,*+B6(28) |
| 63 | STW .D1T1 A14,*+A4(32) |
| 64 | || STW .D2T2 B14,*+B6(36) |
| 65 | STW .D1T1 A15,*+A4(40) |
| 66 | || STW .D2T2 B15,*+B6(44) |
| 67 | ||[A0] ZERO .L1 A4 ; returns 0 for the C++ case |