2016-08-11 12:40:35 +08:00
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use core::intrinsics;
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2016-08-11 08:12:37 +08:00
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2016-12-18 12:01:47 +08:00
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#[cfg(feature = "mem")]
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use mem::{memcpy, memmove, memset};
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2016-08-19 00:20:24 +08:00
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// NOTE This function and the ones below are implemented using assembly because they using a custom
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2016-08-11 13:36:19 +08:00
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// calling convention which can't be implemented using a normal Rust function
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2016-08-11 12:40:35 +08:00
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#[naked]
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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pub unsafe fn __aeabi_uidivmod() {
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asm!("push {lr}
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sub sp, sp, #4
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mov r2, sp
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bl __udivmodsi4
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2016-08-14 00:29:38 +08:00
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ldr r1, [sp]
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add sp, sp, #4
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2016-08-13 16:51:54 +08:00
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pop {pc}");
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2016-08-11 12:40:35 +08:00
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intrinsics::unreachable();
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2016-08-11 08:12:37 +08:00
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}
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2016-08-11 12:40:35 +08:00
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#[naked]
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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pub unsafe fn __aeabi_uldivmod() {
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2016-08-14 00:29:38 +08:00
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asm!("push {r4, lr}
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sub sp, sp, #16
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add r4, sp, #8
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str r4, [sp]
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2016-08-13 16:51:54 +08:00
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bl __udivmoddi4
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2016-08-14 00:29:38 +08:00
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ldr r2, [sp, #8]
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ldr r3, [sp, #12]
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add sp, sp, #16
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pop {r4, pc}");
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2016-08-11 12:40:35 +08:00
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intrinsics::unreachable();
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2016-08-11 08:12:37 +08:00
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}
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2016-08-19 00:20:24 +08:00
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#[naked]
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#[cfg_attr(not(test), no_mangle)]
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pub unsafe fn __aeabi_idivmod() {
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asm!("push {r0, r1, r4, lr}
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bl __divsi3
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pop {r1, r2}
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muls r2, r2, r0
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subs r1, r1, r2
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pop {r4, pc}");
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intrinsics::unreachable();
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}
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#[naked]
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#[cfg_attr(not(test), no_mangle)]
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pub unsafe fn __aeabi_ldivmod() {
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asm!("push {r4, lr}
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sub sp, sp, #16
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add r4, sp, #8
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str r4, [sp]
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bl __divmoddi4
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ldr r2, [sp, #8]
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ldr r3, [sp, #12]
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add sp, sp, #16
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pop {r4, pc}");
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intrinsics::unreachable();
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}
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub extern "aapcs" fn __aeabi_dadd(a: f64, b: f64) -> f64 {
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2016-09-23 01:44:22 +08:00
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::float::add::__adddf3(a, b)
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}
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub extern "aapcs" fn __aeabi_fadd(a: f32, b: f32) -> f32 {
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2016-09-23 01:44:22 +08:00
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::float::add::__addsf3(a, b)
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2016-08-19 00:20:24 +08:00
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}
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2017-02-08 23:10:40 +08:00
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#[cfg_attr(not(test), no_mangle)]
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pub extern "aapcs" fn __aeabi_dsub(a: f64, b: f64) -> f64 {
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::float::sub::__subdf3(a, b)
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}
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#[cfg_attr(not(test), no_mangle)]
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pub extern "aapcs" fn __aeabi_fsub(a: f32, b: f32) -> f32 {
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::float::sub::__subsf3(a, b)
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}
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2016-09-27 04:55:11 +08:00
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#[cfg(not(all(feature = "c", target_arch = "arm", not(target_os = "ios"), not(thumbv6m))))]
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2016-08-19 00:20:24 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub extern "aapcs" fn __aeabi_idiv(a: i32, b: i32) -> i32 {
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2016-08-18 04:50:24 +08:00
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::int::sdiv::__divsi3(a, b)
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2016-08-19 00:20:24 +08:00
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}
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2016-09-23 01:44:22 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub extern "aapcs" fn __aeabi_lasr(a: i64, b: u32) -> i64 {
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2016-09-23 01:44:22 +08:00
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::int::shift::__ashrdi3(a, b)
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}
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub extern "aapcs" fn __aeabi_llsl(a: u64, b: u32) -> u64 {
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2016-09-23 01:44:22 +08:00
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::int::shift::__ashldi3(a, b)
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}
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub extern "aapcs" fn __aeabi_llsr(a: u64, b: u32) -> u64 {
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2016-09-23 01:44:22 +08:00
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::int::shift::__lshrdi3(a, b)
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}
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub extern "aapcs" fn __aeabi_lmul(a: u64, b: u64) -> u64 {
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2016-09-23 01:44:22 +08:00
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::int::mul::__muldi3(a, b)
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}
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2016-09-27 04:55:11 +08:00
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#[cfg(not(all(feature = "c", target_arch = "arm", not(target_os = "ios"), not(thumbv6m))))]
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2016-09-23 01:44:22 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub extern "aapcs" fn __aeabi_uidiv(a: u32, b: u32) -> u32 {
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2016-09-23 01:44:22 +08:00
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::int::udiv::__udivsi3(a, b)
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}
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2016-12-06 12:16:19 +08:00
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#[cfg(not(feature = "c"))]
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#[cfg_attr(not(test), no_mangle)]
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pub extern "C" fn __aeabi_ui2d(a: u32) -> f64 {
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::float::conv::__floatunsidf(a)
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}
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2017-02-08 23:10:40 +08:00
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// TODO: These aeabi_* functions should be defined as aliases
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2016-12-18 12:01:47 +08:00
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#[cfg(not(feature = "mem"))]
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2016-08-08 14:20:39 +08:00
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extern "C" {
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fn memcpy(dest: *mut u8, src: *const u8, n: usize) -> *mut u8;
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fn memmove(dest: *mut u8, src: *const u8, n: usize) -> *mut u8;
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fn memset(dest: *mut u8, c: i32, n: usize) -> *mut u8;
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2016-08-08 04:58:05 +08:00
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}
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2016-08-08 14:20:39 +08:00
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// FIXME: The `*4` and `*8` variants should be defined as aliases.
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2016-08-08 04:58:05 +08:00
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memcpy(dest: *mut u8, src: *const u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memcpy(dest, src, n);
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memcpy4(dest: *mut u8, src: *const u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memcpy(dest, src, n);
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memcpy8(dest: *mut u8, src: *const u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memcpy(dest, src, n);
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2016-08-08 04:58:05 +08:00
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memmove(dest: *mut u8, src: *const u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memmove(dest, src, n);
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memmove4(dest: *mut u8, src: *const u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memmove(dest, src, n);
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memmove8(dest: *mut u8, src: *const u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memmove(dest, src, n);
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}
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2016-08-08 04:58:05 +08:00
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2016-08-08 14:20:39 +08:00
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// Note the different argument order
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memset(dest: *mut u8, n: usize, c: i32) {
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2016-08-08 14:20:39 +08:00
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memset(dest, c, n);
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memset4(dest: *mut u8, n: usize, c: i32) {
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2016-08-08 14:20:39 +08:00
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memset(dest, c, n);
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memset8(dest: *mut u8, n: usize, c: i32) {
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2016-08-08 14:20:39 +08:00
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memset(dest, c, n);
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2016-08-08 04:58:05 +08:00
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memclr(dest: *mut u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memset(dest, 0, n);
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memclr4(dest: *mut u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memset(dest, 0, n);
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}
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2016-08-13 16:51:54 +08:00
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#[cfg_attr(not(test), no_mangle)]
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2017-02-07 22:41:26 +08:00
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pub unsafe extern "aapcs" fn __aeabi_memclr8(dest: *mut u8, n: usize) {
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2016-08-08 14:20:39 +08:00
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memset(dest, 0, n);
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}
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