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Commit 22521ea9 authored by Damien George's avatar Damien George
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py/nlrthumb: Make compatible with Cortex-M0 (ARMv6M instr set).

parent 04353cc8
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py/nlrthumb.S
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/*
* This file is part of the Micro Python project, http://micropython.org/
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
* Copyright (c) 2013-2015 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
......@@ -51,16 +51,32 @@
#endif
.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
#if defined(__ARM_ARCH_6M__)
mov r1, r8
str r1, [r0, #28] @ store r8 into nlr_buf
mov r1, r9
str r1, [r0, #32] @ store r9 into nlr_buf
mov r1, r10
str r1, [r0, #36] @ store r10 into nlr_buf
mov r1, r11
str r1, [r0, #40] @ store r11 into nlr_buf
mov r1, r13
str r1, [r0, #44] @ store r13=sp into nlr_buf
mov r1, lr
str r1, [r0, #8] @ store lr into nlr_buf
#else
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
str lr, [r0, #8] @ store lr into nlr_buf
#endif
ldr r3, nlr_top_addr @ load addr of nlr_top
ldr r2, [r3] @ load nlr_top
......@@ -69,9 +85,6 @@ nlr_push:
movs r0, #0 @ return 0, normal return
bx lr @ return
.align 2
nlr_top_addr:
.word mp_state_ctx + NLR_TOP_OFFSET
.size nlr_push, .-nlr_push
/**************************************/
......@@ -104,24 +117,49 @@ nlr_jump:
ldr r3, nlr_top_addr @ load addr of nlr_top
ldr r2, [r3] @ load nlr_top
cmp r2, #0 @ test if nlr_top is NULL
#if defined(__ARM_ARCH_6M__)
bne nlr_jump_non_null @ if nlr_top is NULL, transfer control to nlr_jump_fail
bl nlr_jump_fail
nlr_jump_non_null:
#else
beq nlr_jump_fail @ if nlr_top is NULL, transfer control to nlr_jump_fail
#endif
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
#if defined(__ARM_ARCH_6M__)
ldr r1, [r2, #28] @ load r8 from nlr_buf
mov r8, r1
ldr r1, [r2, #32] @ load r9 from nlr_buf
mov r9, r1
ldr r1, [r2, #36] @ load r10 from nlr_buf
mov r10, r1
ldr r1, [r2, #40] @ load r11 from nlr_buf
mov r11, r1
ldr r1, [r2, #44] @ load r13=sp from nlr_buf
mov r13, r1
ldr r1, [r2, #8] @ load lr from nlr_buf
mov lr, r1
#else
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
ldr lr, [r2, #8] @ load lr from nlr_buf
#endif
movs r0, #1 @ return 1, non-local return
bx lr @ return
.size nlr_jump, .-nlr_jump
.align 2
nlr_top_addr:
.word mp_state_ctx + NLR_TOP_OFFSET
#endif // (!defined(MICROPY_NLR_SETJMP) || !MICROPY_NLR_SETJMP) && (defined(__thumb2__) || defined(__thumb__) || defined(__arm__))
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