micropython/py/nlrthumb.S
Damien George 04b9147e15 Add license header to (almost) all files.
Blanket wide to all .c and .h files.  Some files originating from ST are
difficult to deal with (license wise) so it was left out of those.

Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
2014-05-03 23:27:38 +01:00

122 lines
4.5 KiB
ArmAsm

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 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(__thumb2__) && !MICROPY_NLR_SETJMP
/* thumb callee save: bx, bp, sp, r12, r14, r14, r15 */
.syntax unified
/*.cpu cortex-m4*/
.thumb
.text
.align 2
/* uint nlr_push(r0=nlr_buf_t *nlr) */
.global nlr_push
.thumb
.thumb_func
.type nlr_push, %function
nlr_push:
str lr, [r0, #8] @ store lr into nlr_buf
str r4, [r0, #12] @ store r4 into nlr_buf
str r5, [r0, #16] @ store r5 into nlr_buf
str r6, [r0, #20] @ store r6 into nlr_buf
str r7, [r0, #24] @ store r7 into nlr_buf
str r8, [r0, #28] @ store r8 into nlr_buf
str r9, [r0, #32] @ store r9 into nlr_buf
str r10, [r0, #36] @ store r10 into nlr_buf
str r11, [r0, #40] @ store r11 into nlr_buf
str r13, [r0, #44] @ store r13=sp into nlr_buf
ldr r3, .L2 @ load addr of nlr_top
ldr r2, [r3] @ load nlr_top
str r2, [r0] @ store nlr_top into nlr_buf
str r0, [r3] @ store nlr_buf into nlr_top (to link list)
movs r0, #0 @ return 0, normal return
bx lr @ return
.align 2
.L2:
.word .LANCHOR0
.size nlr_push, .-nlr_push
@ void nlr_pop()
.global nlr_pop
.thumb
.thumb_func
.type nlr_pop, %function
nlr_pop:
ldr r3, .L5 @ load addr of nlr_top
ldr r2, [r3] @ load nlr_top
ldr r2, [r2] @ load prev nlr_buf
str r2, [r3] @ store prev nlr_buf to nlr_top (to unlink list)
bx lr @ return
.align 2
.L5:
.word .LANCHOR0
.size nlr_pop, .-nlr_pop
/* void nlr_jump(r0=uint val) */
.global nlr_jump
.thumb
.thumb_func
.type nlr_jump, %function
nlr_jump:
ldr r3, .L2 @ load addr of nlr_top
ldr r2, [r3] @ load nlr_top
cmp r2, #0 @ test if nlr_top is NULL
beq nlr_jump_fail @ if nlr_top is NULL, transfer control to nlr_jump_fail
str r0, [r2, #4] @ store return value
ldr r0, [r2] @ load prev nlr_buf
str r0, [r3] @ store prev nol_buf into nlr_top (to unlink list)
ldr lr, [r2, #8] @ load lr from nlr_buf
ldr r4, [r2, #12] @ load r4 from nlr_buf
ldr r5, [r2, #16] @ load r5 from nlr_buf
ldr r6, [r2, #20] @ load r6 from nlr_buf
ldr r7, [r2, #24] @ load r7 from nlr_buf
ldr r8, [r2, #28] @ load r8 from nlr_buf
ldr r9, [r2, #32] @ load r9 from nlr_buf
ldr r10, [r2, #36] @ load r10 from nlr_buf
ldr r11, [r2, #40] @ load r11 from nlr_buf
ldr r13, [r2, #44] @ load r13=sp from nlr_buf
movs r0, #1 @ return 1, non-local return
bx lr @ return
.align 2
.L6:
.word .LANCHOR0
.size nlr_jump, .-nlr_jump
/* local variable nlr_top */
.bss
.align 2
.set .LANCHOR0,. + 0
.type nlr_top, %object
.size nlr_top, 4
nlr_top:
.space 4
#endif