| /* Miscellaneous BPABI functions. |
| |
| Copyright (C) 2003-2014 Free Software Foundation, Inc. |
| Contributed by CodeSourcery, LLC. |
| |
| 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 __ARM_EABI__ |
| /* Some attributes that are common to all routines in this file. */ |
| /* Tag_ABI_align_needed: This code does not require 8-byte |
| alignment from the caller. */ |
| /* .eabi_attribute 24, 0 -- default setting. */ |
| /* Tag_ABI_align_preserved: This code preserves 8-byte |
| alignment in any callee. */ |
| .eabi_attribute 25, 1 |
| #endif /* __ARM_EABI__ */ |
| |
| #ifdef L_aeabi_lcmp |
| |
| ARM_FUNC_START aeabi_lcmp |
| cmp xxh, yyh |
| do_it lt |
| movlt r0, #-1 |
| do_it gt |
| movgt r0, #1 |
| do_it ne |
| RETc(ne) |
| subs r0, xxl, yyl |
| do_it lo |
| movlo r0, #-1 |
| do_it hi |
| movhi r0, #1 |
| RET |
| FUNC_END aeabi_lcmp |
| |
| #endif /* L_aeabi_lcmp */ |
| |
| #ifdef L_aeabi_ulcmp |
| |
| ARM_FUNC_START aeabi_ulcmp |
| cmp xxh, yyh |
| do_it lo |
| movlo r0, #-1 |
| do_it hi |
| movhi r0, #1 |
| do_it ne |
| RETc(ne) |
| cmp xxl, yyl |
| do_it lo |
| movlo r0, #-1 |
| do_it hi |
| movhi r0, #1 |
| do_it eq |
| moveq r0, #0 |
| RET |
| FUNC_END aeabi_ulcmp |
| |
| #endif /* L_aeabi_ulcmp */ |
| |
| .macro test_div_by_zero signed |
| /* Tail-call to divide-by-zero handlers which may be overridden by the user, |
| so unwinding works properly. */ |
| #if defined(__thumb2__) |
| cbnz yyh, 1f |
| cbnz yyl, 1f |
| cmp xxh, #0 |
| do_it eq |
| cmpeq xxl, #0 |
| .ifc \signed, unsigned |
| beq 2f |
| mov xxh, #0xffffffff |
| mov xxl, xxh |
| 2: |
| .else |
| do_it lt, t |
| movlt xxl, #0 |
| movlt xxh, #0x80000000 |
| do_it gt, t |
| movgt xxh, #0x7fffffff |
| movgt xxl, #0xffffffff |
| .endif |
| b SYM (__aeabi_ldiv0) __PLT__ |
| 1: |
| #else |
| /* Note: Thumb-1 code calls via an ARM shim on processors which |
| support ARM mode. */ |
| cmp yyh, #0 |
| cmpeq yyl, #0 |
| bne 2f |
| cmp xxh, #0 |
| cmpeq xxl, #0 |
| .ifc \signed, unsigned |
| movne xxh, #0xffffffff |
| movne xxl, #0xffffffff |
| .else |
| movlt xxh, #0x80000000 |
| movlt xxl, #0 |
| movgt xxh, #0x7fffffff |
| movgt xxl, #0xffffffff |
| .endif |
| b SYM (__aeabi_ldiv0) __PLT__ |
| 2: |
| #endif |
| .endm |
| |
| #ifdef L_aeabi_ldivmod |
| |
| ARM_FUNC_START aeabi_ldivmod |
| cfi_start __aeabi_ldivmod, LSYM(Lend_aeabi_ldivmod) |
| test_div_by_zero signed |
| |
| sub sp, sp, #8 |
| #if defined(__thumb2__) |
| mov ip, sp |
| push {ip, lr} |
| #else |
| do_push {sp, lr} |
| #endif |
| 98: cfi_push 98b - __aeabi_ldivmod, 0xe, -0xc, 0x10 |
| bl SYM(__gnu_ldivmod_helper) __PLT__ |
| ldr lr, [sp, #4] |
| add sp, sp, #8 |
| do_pop {r2, r3} |
| RET |
| cfi_end LSYM(Lend_aeabi_ldivmod) |
| |
| #endif /* L_aeabi_ldivmod */ |
| |
| #ifdef L_aeabi_uldivmod |
| |
| ARM_FUNC_START aeabi_uldivmod |
| cfi_start __aeabi_uldivmod, LSYM(Lend_aeabi_uldivmod) |
| test_div_by_zero unsigned |
| |
| sub sp, sp, #8 |
| #if defined(__thumb2__) |
| mov ip, sp |
| push {ip, lr} |
| #else |
| do_push {sp, lr} |
| #endif |
| 98: cfi_push 98b - __aeabi_uldivmod, 0xe, -0xc, 0x10 |
| bl SYM(__gnu_uldivmod_helper) __PLT__ |
| ldr lr, [sp, #4] |
| add sp, sp, #8 |
| do_pop {r2, r3} |
| RET |
| cfi_end LSYM(Lend_aeabi_uldivmod) |
| |
| #endif /* L_aeabi_divmod */ |
| |