diff options
Diffstat (limited to 'lib/utils')
| -rw-r--r-- | lib/utils/gchelper_m0.s | 61 | ||||
| -rw-r--r-- | lib/utils/gchelper_m3.s | 62 |
2 files changed, 123 insertions, 0 deletions
diff --git a/lib/utils/gchelper_m0.s b/lib/utils/gchelper_m0.s new file mode 100644 index 0000000000..db0d9738d1 --- /dev/null +++ b/lib/utils/gchelper_m0.s @@ -0,0 +1,61 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2018 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. + */ + + .syntax unified + .cpu cortex-m0 + .thumb + + .section .text + .align 2 + + .global gc_helper_get_regs_and_sp + .type gc_helper_get_regs_and_sp, %function + +@ uint gc_helper_get_regs_and_sp(r0=uint regs[10]) +gc_helper_get_regs_and_sp: + @ store registers into given array + str r4, [r0, #0] + str r5, [r0, #4] + str r6, [r0, #8] + str r7, [r0, #12] + mov r1, r8 + str r1, [r0, #16] + mov r1, r9 + str r1, [r0, #20] + mov r1, r10 + str r1, [r0, #24] + mov r1, r11 + str r1, [r0, #28] + mov r1, r12 + str r1, [r0, #32] + mov r1, r13 + str r1, [r0, #36] + + @ return the sp + mov r0, sp + bx lr + + .size gc_helper_get_regs_and_sp, .-gc_helper_get_regs_and_sp diff --git a/lib/utils/gchelper_m3.s b/lib/utils/gchelper_m3.s new file mode 100644 index 0000000000..6baedcdd0e --- /dev/null +++ b/lib/utils/gchelper_m3.s @@ -0,0 +1,62 @@ + .syntax unified + .cpu cortex-m4 + .thumb + .text + .align 2 + +@ uint gc_helper_get_regs_and_sp(r0=uint regs[10]) + .global gc_helper_get_regs_and_sp + .thumb + .thumb_func + .type gc_helper_get_regs_and_sp, %function +gc_helper_get_regs_and_sp: + @ store registers into given array + str r4, [r0], #4 + str r5, [r0], #4 + str r6, [r0], #4 + str r7, [r0], #4 + str r8, [r0], #4 + str r9, [r0], #4 + str r10, [r0], #4 + str r11, [r0], #4 + str r12, [r0], #4 + str r13, [r0], #4 + + @ return the sp + mov r0, sp + bx lr + + +@ this next function is now obsolete + + .size gc_helper_get_regs_and_clean_stack, .-gc_helper_get_regs_and_clean_stack +@ void gc_helper_get_regs_and_clean_stack(r0=uint regs[10], r1=heap_end) + .global gc_helper_get_regs_and_clean_stack + .thumb + .thumb_func + .type gc_helper_get_regs_and_clean_stack, %function +gc_helper_get_regs_and_clean_stack: + @ store registers into given array + str r4, [r0], #4 + str r5, [r0], #4 + str r6, [r0], #4 + str r7, [r0], #4 + str r8, [r0], #4 + str r9, [r0], #4 + str r10, [r0], #4 + str r11, [r0], #4 + str r12, [r0], #4 + str r13, [r0], #4 + + @ clean the stack from given pointer up to current sp + movs r0, #0 + mov r2, sp + b.n .entry +.loop: + str r0, [r1], #4 +.entry: + cmp r1, r2 + bcc.n .loop + bx lr + + .size gc_helper_get_regs_and_clean_stack, .-gc_helper_get_regs_and_clean_stack |