| /* atomic-ops.S: kernel atomic operations |
| * |
| * For an explanation of how atomic ops work in this arch, see: |
| * Documentation/fujitsu/frv/atomic-ops.txt |
| * |
| * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| |
| #include <asm/spr-regs.h> |
| |
| .text |
| .balign 4 |
| |
| ############################################################################### |
| # |
| # unsigned long atomic_test_and_ANDNOT_mask(unsigned long mask, volatile unsigned long *v); |
| # |
| ############################################################################### |
| .globl atomic_test_and_ANDNOT_mask |
| .type atomic_test_and_ANDNOT_mask,@function |
| atomic_test_and_ANDNOT_mask: |
| not.p gr8,gr10 |
| 0: |
| orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ |
| ckeq icc3,cc7 |
| ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ |
| orcr cc7,cc7,cc3 /* set CC3 to true */ |
| and gr8,gr10,gr11 |
| cst.p gr11,@(gr9,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ |
| beq icc3,#0,0b |
| bralr |
| |
| .size atomic_test_and_ANDNOT_mask, .-atomic_test_and_ANDNOT_mask |
| |
| ############################################################################### |
| # |
| # unsigned long atomic_test_and_OR_mask(unsigned long mask, volatile unsigned long *v); |
| # |
| ############################################################################### |
| .globl atomic_test_and_OR_mask |
| .type atomic_test_and_OR_mask,@function |
| atomic_test_and_OR_mask: |
| or.p gr8,gr8,gr10 |
| 0: |
| orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ |
| ckeq icc3,cc7 |
| ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ |
| orcr cc7,cc7,cc3 /* set CC3 to true */ |
| or gr8,gr10,gr11 |
| cst.p gr11,@(gr9,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ |
| beq icc3,#0,0b |
| bralr |
| |
| .size atomic_test_and_OR_mask, .-atomic_test_and_OR_mask |
| |
| ############################################################################### |
| # |
| # unsigned long atomic_test_and_XOR_mask(unsigned long mask, volatile unsigned long *v); |
| # |
| ############################################################################### |
| .globl atomic_test_and_XOR_mask |
| .type atomic_test_and_XOR_mask,@function |
| atomic_test_and_XOR_mask: |
| or.p gr8,gr8,gr10 |
| 0: |
| orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ |
| ckeq icc3,cc7 |
| ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ |
| orcr cc7,cc7,cc3 /* set CC3 to true */ |
| xor gr8,gr10,gr11 |
| cst.p gr11,@(gr9,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ |
| beq icc3,#0,0b |
| bralr |
| |
| .size atomic_test_and_XOR_mask, .-atomic_test_and_XOR_mask |
| |
| ############################################################################### |
| # |
| # int atomic_add_return(int i, atomic_t *v) |
| # |
| ############################################################################### |
| .globl atomic_add_return |
| .type atomic_add_return,@function |
| atomic_add_return: |
| or.p gr8,gr8,gr10 |
| 0: |
| orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ |
| ckeq icc3,cc7 |
| ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ |
| orcr cc7,cc7,cc3 /* set CC3 to true */ |
| add gr8,gr10,gr8 |
| cst.p gr8,@(gr9,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ |
| beq icc3,#0,0b |
| bralr |
| |
| .size atomic_add_return, .-atomic_add_return |
| |
| ############################################################################### |
| # |
| # int atomic_sub_return(int i, atomic_t *v) |
| # |
| ############################################################################### |
| .globl atomic_sub_return |
| .type atomic_sub_return,@function |
| atomic_sub_return: |
| or.p gr8,gr8,gr10 |
| 0: |
| orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ |
| ckeq icc3,cc7 |
| ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ |
| orcr cc7,cc7,cc3 /* set CC3 to true */ |
| sub gr8,gr10,gr8 |
| cst.p gr8,@(gr9,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ |
| beq icc3,#0,0b |
| bralr |
| |
| .size atomic_sub_return, .-atomic_sub_return |
| |
| ############################################################################### |
| # |
| # uint8_t __xchg_8(uint8_t i, uint8_t *v) |
| # |
| ############################################################################### |
| .globl __xchg_8 |
| .type __xchg_8,@function |
| __xchg_8: |
| or.p gr8,gr8,gr10 |
| 0: |
| orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ |
| ckeq icc3,cc7 |
| ldub.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ |
| orcr cc7,cc7,cc3 /* set CC3 to true */ |
| cstb.p gr10,@(gr9,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ |
| beq icc3,#0,0b |
| bralr |
| |
| .size __xchg_8, .-__xchg_8 |
| |
| ############################################################################### |
| # |
| # uint16_t __xchg_16(uint16_t i, uint16_t *v) |
| # |
| ############################################################################### |
| .globl __xchg_16 |
| .type __xchg_16,@function |
| __xchg_16: |
| or.p gr8,gr8,gr10 |
| 0: |
| orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ |
| ckeq icc3,cc7 |
| lduh.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ |
| orcr cc7,cc7,cc3 /* set CC3 to true */ |
| csth.p gr10,@(gr9,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ |
| beq icc3,#0,0b |
| bralr |
| |
| .size __xchg_16, .-__xchg_16 |
| |
| ############################################################################### |
| # |
| # uint32_t __xchg_32(uint32_t i, uint32_t *v) |
| # |
| ############################################################################### |
| .globl __xchg_32 |
| .type __xchg_32,@function |
| __xchg_32: |
| or.p gr8,gr8,gr10 |
| 0: |
| orcc gr0,gr0,gr0,icc3 /* set ICC3.Z */ |
| ckeq icc3,cc7 |
| ld.p @(gr9,gr0),gr8 /* LD.P/ORCR must be atomic */ |
| orcr cc7,cc7,cc3 /* set CC3 to true */ |
| cst.p gr10,@(gr9,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 /* clear ICC3.Z if store happens */ |
| beq icc3,#0,0b |
| bralr |
| |
| .size __xchg_32, .-__xchg_32 |
| |
| ############################################################################### |
| # |
| # uint8_t __cmpxchg_8(uint8_t *v, uint8_t test, uint8_t new) |
| # |
| ############################################################################### |
| .globl __cmpxchg_8 |
| .type __cmpxchg_8,@function |
| __cmpxchg_8: |
| or.p gr8,gr8,gr11 |
| 0: |
| orcc gr0,gr0,gr0,icc3 |
| ckeq icc3,cc7 |
| ldub.p @(gr11,gr0),gr8 |
| orcr cc7,cc7,cc3 |
| sub gr8,gr9,gr7 |
| sllicc gr7,#24,gr0,icc0 |
| bne icc0,#0,1f |
| cstb.p gr10,@(gr11,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 |
| beq icc3,#0,0b |
| 1: |
| bralr |
| |
| .size __cmpxchg_8, .-__cmpxchg_8 |
| |
| ############################################################################### |
| # |
| # uint16_t __cmpxchg_16(uint16_t *v, uint16_t test, uint16_t new) |
| # |
| ############################################################################### |
| .globl __cmpxchg_16 |
| .type __cmpxchg_16,@function |
| __cmpxchg_16: |
| or.p gr8,gr8,gr11 |
| 0: |
| orcc gr0,gr0,gr0,icc3 |
| ckeq icc3,cc7 |
| lduh.p @(gr11,gr0),gr8 |
| orcr cc7,cc7,cc3 |
| sub gr8,gr9,gr7 |
| sllicc gr7,#16,gr0,icc0 |
| bne icc0,#0,1f |
| csth.p gr10,@(gr11,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 |
| beq icc3,#0,0b |
| 1: |
| bralr |
| |
| .size __cmpxchg_16, .-__cmpxchg_16 |
| |
| ############################################################################### |
| # |
| # uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new) |
| # |
| ############################################################################### |
| .globl __cmpxchg_32 |
| .type __cmpxchg_32,@function |
| __cmpxchg_32: |
| or.p gr8,gr8,gr11 |
| 0: |
| orcc gr0,gr0,gr0,icc3 |
| ckeq icc3,cc7 |
| ld.p @(gr11,gr0),gr8 |
| orcr cc7,cc7,cc3 |
| subcc gr8,gr9,gr7,icc0 |
| bne icc0,#0,1f |
| cst.p gr10,@(gr11,gr0) ,cc3,#1 |
| corcc gr29,gr29,gr0 ,cc3,#1 |
| beq icc3,#0,0b |
| 1: |
| bralr |
| |
| .size __cmpxchg_32, .-__cmpxchg_32 |