112 lines
2.9 KiB
ArmAsm
112 lines
2.9 KiB
ArmAsm
![]() |
/*
|
||
|
* This file is part of the Micro Python project, http://micropython.org/
|
||
|
*
|
||
|
* The MIT License (MIT)
|
||
|
*
|
||
|
* Copyright (c) 2014 Damien P. George
|
||
|
*
|
||
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
* of this software and associated documentation files (the "Software"), to deal
|
||
|
* in the Software without restriction, including without limitation the rights
|
||
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
* copies of the Software, and to permit persons to whom the Software is
|
||
|
* furnished to do so, subject to the following conditions:
|
||
|
*
|
||
|
* The above copyright notice and this permission notice shall be included in
|
||
|
* all copies or substantial portions of the Software.
|
||
|
*
|
||
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||
|
* THE SOFTWARE.
|
||
|
*/
|
||
|
|
||
|
#if defined(__xtensa__)
|
||
|
|
||
|
/*
|
||
|
calling conventions:
|
||
|
a0 = return address
|
||
|
a1 = stack pointer
|
||
|
a2 = first arg, return value
|
||
|
a3-a7 = rest of args
|
||
|
*/
|
||
|
|
||
|
.file "nlr.s"
|
||
|
.text
|
||
|
|
||
|
.literal_position
|
||
|
.literal .LC0, nlr_top
|
||
|
.align 4
|
||
|
.global nlr_push
|
||
|
.type nlr_push, @function
|
||
|
nlr_push:
|
||
|
// save regs
|
||
|
s32i.n a0, a2, 8
|
||
|
s32i.n a1, a2, 12
|
||
|
s32i.n a8, a2, 16
|
||
|
s32i.n a9, a2, 20
|
||
|
s32i.n a10, a2, 24
|
||
|
s32i.n a11, a2, 28
|
||
|
s32i.n a12, a2, 32
|
||
|
s32i.n a13, a2, 36
|
||
|
s32i.n a14, a2, 40
|
||
|
s32i.n a15, a2, 44
|
||
|
|
||
|
l32r a3, .LC0
|
||
|
l32i.n a4, a3, 0
|
||
|
s32i.n a2, a3, 0
|
||
|
s32i.n a4, a2, 0
|
||
|
movi.n a2, 0
|
||
|
ret.n
|
||
|
.size nlr_push, .-nlr_push
|
||
|
|
||
|
.literal_position
|
||
|
.literal .LC1, nlr_top
|
||
|
.align 4
|
||
|
.global nlr_pop
|
||
|
.type nlr_pop, @function
|
||
|
nlr_pop:
|
||
|
l32r a2, .LC1
|
||
|
l32i.n a3, a2, 0
|
||
|
l32i.n a3, a3, 0
|
||
|
s32i.n a3, a2, 0
|
||
|
ret.n
|
||
|
.size nlr_pop, .-nlr_pop
|
||
|
|
||
|
.literal_position
|
||
|
.literal .LC2, nlr_top
|
||
|
.align 4
|
||
|
.global nlr_jump
|
||
|
.type nlr_jump, @function
|
||
|
nlr_jump:
|
||
|
l32r a3, .LC2
|
||
|
l32i.n a3, a3, 0 // a3 = nlr_top
|
||
|
bnez.n a3, .L4
|
||
|
call0 nlr_jump_fail
|
||
|
.L4:
|
||
|
s32i.n a2, a3, 4 // nlr_top->ret_val = val
|
||
|
|
||
|
// restore regs
|
||
|
l32i.n a0, a3, 8
|
||
|
l32i.n a1, a3, 12
|
||
|
l32i.n a8, a3, 16
|
||
|
l32i.n a9, a3, 20
|
||
|
l32i.n a10, a3, 24
|
||
|
l32i.n a11, a3, 28
|
||
|
l32i.n a12, a3, 32
|
||
|
l32i.n a13, a3, 36
|
||
|
l32i.n a14, a3, 40
|
||
|
l32i.n a15, a3, 44
|
||
|
|
||
|
l32i.n a3, a3, 0 // a3 = nlr_top->prev
|
||
|
l32r a2, .LC2
|
||
|
s32i.n a3, a2, 0 // nlr_top = a3
|
||
|
movi.n a2, 1 // return 1
|
||
|
ret.n
|
||
|
.size nlr_jump, .-nlr_jump
|
||
|
|
||
|
#endif // defined(__xtensa__)
|