Mercurial > hg > CbC > CbC_gcc
diff gcc/config/arm/bpabi-v6m.S @ 0:a06113de4d67
first commit
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 77e2b8dfacca |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/config/arm/bpabi-v6m.S Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,263 @@ +/* Miscellaneous BPABI functions. ARMv6M implementation + + Copyright (C) 2006, 2008, 2009 Free Software Foundation, Inc. + Contributed by CodeSourcery. + + This file 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 3, or (at your option) any + later version. + + This file 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 + General Public License for more details. + + Under Section 7 of GPL version 3, you are granted additional + permissions described in the GCC Runtime Library Exception, version + 3.1, as published by the Free Software Foundation. + + You should have received a copy of the GNU General Public License and + a copy of the GCC Runtime Library Exception along with this program; + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see + <http://www.gnu.org/licenses/>. */ + +#ifdef L_aeabi_lcmp + +FUNC_START aeabi_lcmp + cmp xxh, yyh + beq 1f + bgt 2f + mov r0, #1 + neg r0, r0 + RET +2: + mov r0, #1 + RET +1: + sub r0, xxl, yyl + beq 1f + bhi 2f + mov r0, #1 + neg r0, r0 + RET +2: + mov r0, #1 +1: + RET + FUNC_END aeabi_lcmp + +#endif /* L_aeabi_lcmp */ + +#ifdef L_aeabi_ulcmp + +FUNC_START aeabi_ulcmp + cmp xxh, yyh + bne 1f + sub r0, xxl, yyl + beq 2f +1: + bcs 1f + mov r0, #1 + neg r0, r0 + RET +1: + mov r0, #1 +2: + RET + FUNC_END aeabi_ulcmp + +#endif /* L_aeabi_ulcmp */ + +#ifdef L_aeabi_ldivmod + +FUNC_START aeabi_ldivmod + push {r0, r1} + mov r0, sp + push {r0, lr} + ldr r0, [sp, #8] + bl SYM(__gnu_ldivmod_helper) + ldr r3, [sp, #4] + mov lr, r3 + add sp, sp, #8 + pop {r2, r3} + RET + FUNC_END aeabi_ldivmod + +#endif /* L_aeabi_ldivmod */ + +#ifdef L_aeabi_uldivmod + +FUNC_START aeabi_uldivmod + push {r0, r1} + mov r0, sp + push {r0, lr} + ldr r0, [sp, #8] + bl SYM(__gnu_uldivmod_helper) + ldr r3, [sp, #4] + mov lr, r3 + add sp, sp, #8 + pop {r2, r3} + RET + FUNC_END aeabi_uldivmod + +#endif /* L_aeabi_uldivmod */ + +#ifdef L_arm_addsubsf3 + +FUNC_START aeabi_frsub + + push {r4, lr} + mov r4, #1 + lsl r4, #31 + eor r0, r0, r4 + bl __aeabi_fadd + pop {r4, pc} + + FUNC_END aeabi_frsub + +#endif /* L_arm_addsubsf3 */ + +#ifdef L_arm_cmpsf2 + +FUNC_START aeabi_cfrcmple + + mov ip, r0 + mov r0, r1 + mov r1, ip + b 6f + +FUNC_START aeabi_cfcmpeq +FUNC_ALIAS aeabi_cfcmple aeabi_cfcmpeq + + @ The status-returning routines are required to preserve all + @ registers except ip, lr, and cpsr. +6: push {r0, r1, r2, r3, r4, lr} + bl __lesf2 + @ Set the Z flag correctly, and the C flag unconditionally. + cmp r0, #0 + @ Clear the C flag if the return value was -1, indicating + @ that the first operand was smaller than the second. + bmi 1f + mov r1, #0 + cmn r0, r1 +1: + pop {r0, r1, r2, r3, r4, pc} + + FUNC_END aeabi_cfcmple + FUNC_END aeabi_cfcmpeq + FUNC_END aeabi_cfrcmple + +FUNC_START aeabi_fcmpeq + + push {r4, lr} + bl __eqsf2 + neg r0, r0 + add r0, r0, #1 + pop {r4, pc} + + FUNC_END aeabi_fcmpeq + +.macro COMPARISON cond, helper, mode=sf2 +FUNC_START aeabi_fcmp\cond + + push {r4, lr} + bl __\helper\mode + cmp r0, #0 + b\cond 1f + mov r0, #0 + pop {r4, pc} +1: + mov r0, #1 + pop {r4, pc} + + FUNC_END aeabi_fcmp\cond +.endm + +COMPARISON lt, le +COMPARISON le, le +COMPARISON gt, ge +COMPARISON ge, ge + +#endif /* L_arm_cmpsf2 */ + +#ifdef L_arm_addsubdf3 + +FUNC_START aeabi_drsub + + push {r4, lr} + mov r4, #1 + lsl r4, #31 + eor xxh, xxh, r4 + bl __aeabi_dadd + pop {r4, pc} + + FUNC_END aeabi_drsub + +#endif /* L_arm_addsubdf3 */ + +#ifdef L_arm_cmpdf2 + +FUNC_START aeabi_cdrcmple + + mov ip, r0 + mov r0, r2 + mov r2, ip + mov ip, r1 + mov r1, r3 + mov r3, ip + b 6f + +FUNC_START aeabi_cdcmpeq +FUNC_ALIAS aeabi_cdcmple aeabi_cdcmpeq + + @ The status-returning routines are required to preserve all + @ registers except ip, lr, and cpsr. +6: push {r0, r1, r2, r3, r4, lr} + bl __ledf2 + @ Set the Z flag correctly, and the C flag unconditionally. + cmp r0, #0 + @ Clear the C flag if the return value was -1, indicating + @ that the first operand was smaller than the second. + bmi 1f + mov r1, #0 + cmn r0, r1 +1: + pop {r0, r1, r2, r3, r4, pc} + + FUNC_END aeabi_cdcmple + FUNC_END aeabi_cdcmpeq + FUNC_END aeabi_cdrcmple + +FUNC_START aeabi_dcmpeq + + push {r4, lr} + bl __eqdf2 + neg r0, r0 + add r0, r0, #1 + pop {r4, pc} + + FUNC_END aeabi_dcmpeq + +.macro COMPARISON cond, helper, mode=df2 +FUNC_START aeabi_dcmp\cond + + push {r4, lr} + bl __\helper\mode + cmp r0, #0 + b\cond 1f + mov r0, #0 + pop {r4, pc} +1: + mov r0, #1 + pop {r4, pc} + + FUNC_END aeabi_dcmp\cond +.endm + +COMPARISON lt, le +COMPARISON le, le +COMPARISON gt, ge +COMPARISON ge, ge + +#endif /* L_arm_cmpdf2 */