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- ;
- ; Port of uClibc for TMS320C6000 DSP architecture
- ; Copyright (C) 2004 Texas Instruments Incorporated
- ; Author of TMS320C6000 port: Aurelien Jacquiot
- ;
- ; This program 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.
- ;
- ; This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
- ;
- .global setjmp
- setjmp:
- #if 0
- .if 1 /* was: .if (CONFIG_UCLIBC_SHARED == 0) */
- MVKL .S1 ___curr_eh_stack_entry,A6
- || SUB .D1X A4,B15,A3
- MVKH .S1 ___curr_eh_stack_entry,A6
- || CMPGT .L1 A3,4,A0 ; A0 set if C++ exceptions case
- LDW .D1T1 *A6,A2
- .else
- MVKL .S2 (___curr_eh_stack_entry - $bss)/4,B6
- || SUB .D1X A4,B15,A3
- MVKH .S2 (___curr_eh_stack_entry - $bss)/4,B6
- || CMPGT .L1 A3,4,A0 ; A0 set if C++ exceptions case
- LDW .D2T1 *+B14[B6],A2
- .endif
- NOP
- #else
- MVK .S1 0, A0
- #endif
- MVK .L2 1,B4 ; indicate to ___sigjmp_save to save signal mask
- || MV .D2X A4,B6 ; jmp_buf address
- || STW .D1T2 B3,*+A4(48) ; return address
- ADDAW .D1 A2,2,A2
- [A0] CMPEQ .L1 A4,A2,A0 ; A0 set if C++ exceptions case
- STW .D1T1 A10,*+A4(0)
- || STW .D2T2 B10,*+B6(4)
- ||[!A0] B .S1 __sigjmp_save ; branch to ___sigjmp_save in 5 cycles
- ||[A0] B .S2 B3
- STW .D1T1 A11,*+A4(8)
- || STW .D2T2 B11,*+B6(12)
- STW .D1T1 A12,*+A4(16)
- || STW .D2T2 B12,*+B6(20)
- STW .D1T1 A13,*+A4(24)
- || STW .D2T2 B13,*+B6(28)
- STW .D1T1 A14,*+A4(32)
- || STW .D2T2 B14,*+B6(36)
- STW .D1T1 A15,*+A4(40)
- || STW .D2T2 B15,*+B6(44)
- ||[A0] ZERO .L1 A4 ; returns 0 for the C++ case
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