init commit
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232
build/sysmem.lst
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232
build/sysmem.lst
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ARM GAS /tmp/ccEFOvop.s page 1
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1 .cpu cortex-m4
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2 .eabi_attribute 27, 1
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3 .eabi_attribute 28, 1
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4 .eabi_attribute 20, 1
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5 .eabi_attribute 21, 1
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6 .eabi_attribute 23, 3
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7 .eabi_attribute 24, 1
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8 .eabi_attribute 25, 1
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9 .eabi_attribute 26, 1
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10 .eabi_attribute 30, 1
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11 .eabi_attribute 34, 1
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12 .eabi_attribute 18, 4
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13 .file "sysmem.c"
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14 .text
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15 .Ltext0:
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16 .cfi_sections .debug_frame
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17 .section .text._sbrk,"ax",%progbits
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18 .align 1
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19 .global _sbrk
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20 .arch armv7e-m
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21 .syntax unified
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22 .thumb
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23 .thumb_func
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24 .fpu fpv4-sp-d16
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26 _sbrk:
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27 .LVL0:
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28 .LFB0:
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29 .file 1 "Core/Src/sysmem.c"
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1:Core/Src/sysmem.c **** /**
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2:Core/Src/sysmem.c **** ******************************************************************************
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3:Core/Src/sysmem.c **** * @file sysmem.c
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4:Core/Src/sysmem.c **** * @author Generated by STM32CubeMX
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5:Core/Src/sysmem.c **** * @brief System Memory calls file
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6:Core/Src/sysmem.c **** *
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7:Core/Src/sysmem.c **** * For more information about which C functions
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8:Core/Src/sysmem.c **** * need which of these lowlevel functions
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9:Core/Src/sysmem.c **** * please consult the Newlib or Picolibc libc manual
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10:Core/Src/sysmem.c **** ******************************************************************************
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11:Core/Src/sysmem.c **** * @attention
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12:Core/Src/sysmem.c **** *
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13:Core/Src/sysmem.c **** * Copyright (c) 2025 STMicroelectronics.
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14:Core/Src/sysmem.c **** * All rights reserved.
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15:Core/Src/sysmem.c **** *
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16:Core/Src/sysmem.c **** * This software is licensed under terms that can be found in the LICENSE file
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17:Core/Src/sysmem.c **** * in the root directory of this software component.
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18:Core/Src/sysmem.c **** * If no LICENSE file comes with this software, it is provided AS-IS.
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19:Core/Src/sysmem.c **** *
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20:Core/Src/sysmem.c **** ******************************************************************************
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21:Core/Src/sysmem.c **** */
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22:Core/Src/sysmem.c ****
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23:Core/Src/sysmem.c **** /* Includes */
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24:Core/Src/sysmem.c **** #include <errno.h>
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25:Core/Src/sysmem.c **** #include <stdint.h>
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26:Core/Src/sysmem.c **** #include <stddef.h>
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27:Core/Src/sysmem.c ****
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28:Core/Src/sysmem.c **** /**
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29:Core/Src/sysmem.c **** * Pointer to the current high watermark of the heap usage
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ARM GAS /tmp/ccEFOvop.s page 2
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30:Core/Src/sysmem.c **** */
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31:Core/Src/sysmem.c **** static uint8_t *__sbrk_heap_end = NULL;
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32:Core/Src/sysmem.c ****
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33:Core/Src/sysmem.c **** /**
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34:Core/Src/sysmem.c **** * @brief _sbrk() allocates memory to the newlib heap and is used by malloc
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35:Core/Src/sysmem.c **** * and others from the C library
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36:Core/Src/sysmem.c **** *
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37:Core/Src/sysmem.c **** * @verbatim
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38:Core/Src/sysmem.c **** * ############################################################################
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39:Core/Src/sysmem.c **** * # .data # .bss # newlib heap # MSP stack #
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40:Core/Src/sysmem.c **** * # # # # Reserved by _Min_Stack_Size #
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41:Core/Src/sysmem.c **** * ############################################################################
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42:Core/Src/sysmem.c **** * ^-- RAM start ^-- _end _estack, RAM end --^
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43:Core/Src/sysmem.c **** * @endverbatim
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44:Core/Src/sysmem.c **** *
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45:Core/Src/sysmem.c **** * This implementation starts allocating at the '_end' linker symbol
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46:Core/Src/sysmem.c **** * The '_Min_Stack_Size' linker symbol reserves a memory for the MSP stack
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47:Core/Src/sysmem.c **** * The implementation considers '_estack' linker symbol to be RAM end
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48:Core/Src/sysmem.c **** * NOTE: If the MSP stack, at any point during execution, grows larger than the
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49:Core/Src/sysmem.c **** * reserved size, please increase the '_Min_Stack_Size'.
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50:Core/Src/sysmem.c **** *
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51:Core/Src/sysmem.c **** * @param incr Memory size
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52:Core/Src/sysmem.c **** * @return Pointer to allocated memory
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53:Core/Src/sysmem.c **** */
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54:Core/Src/sysmem.c **** void *_sbrk(ptrdiff_t incr)
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55:Core/Src/sysmem.c **** {
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30 .loc 1 55 1 view -0
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31 .cfi_startproc
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32 @ args = 0, pretend = 0, frame = 0
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33 @ frame_needed = 0, uses_anonymous_args = 0
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34 .loc 1 55 1 is_stmt 0 view .LVU1
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35 0000 10B5 push {r4, lr}
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36 .LCFI0:
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37 .cfi_def_cfa_offset 8
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38 .cfi_offset 4, -8
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39 .cfi_offset 14, -4
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40 0002 0346 mov r3, r0
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56:Core/Src/sysmem.c **** extern uint8_t _end; /* Symbol defined in the linker script */
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41 .loc 1 56 3 is_stmt 1 view .LVU2
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57:Core/Src/sysmem.c **** extern uint8_t _estack; /* Symbol defined in the linker script */
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42 .loc 1 57 3 view .LVU3
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58:Core/Src/sysmem.c **** extern uint32_t _Min_Stack_Size; /* Symbol defined in the linker script */
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43 .loc 1 58 3 view .LVU4
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59:Core/Src/sysmem.c **** const uint32_t stack_limit = (uint32_t)&_estack - (uint32_t)&_Min_Stack_Size;
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44 .loc 1 59 3 view .LVU5
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45 .loc 1 59 18 is_stmt 0 view .LVU6
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46 0004 0C4A ldr r2, .L8
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47 0006 0D49 ldr r1, .L8+4
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60:Core/Src/sysmem.c **** const uint8_t *max_heap = (uint8_t *)stack_limit;
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48 .loc 1 60 3 is_stmt 1 view .LVU7
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49 .LVL1:
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61:Core/Src/sysmem.c **** uint8_t *prev_heap_end;
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50 .loc 1 61 3 view .LVU8
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62:Core/Src/sysmem.c ****
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63:Core/Src/sysmem.c **** /* Initialize heap end at first call */
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64:Core/Src/sysmem.c **** if (NULL == __sbrk_heap_end)
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51 .loc 1 64 3 view .LVU9
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ARM GAS /tmp/ccEFOvop.s page 3
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52 .loc 1 64 12 is_stmt 0 view .LVU10
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53 0008 0D48 ldr r0, .L8+8
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54 .LVL2:
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55 .loc 1 64 12 view .LVU11
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56 000a 0068 ldr r0, [r0]
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57 .loc 1 64 6 view .LVU12
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58 000c 40B1 cbz r0, .L6
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59 .L2:
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65:Core/Src/sysmem.c **** {
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66:Core/Src/sysmem.c **** __sbrk_heap_end = &_end;
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67:Core/Src/sysmem.c **** }
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68:Core/Src/sysmem.c ****
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69:Core/Src/sysmem.c **** /* Protect heap from growing into the reserved MSP stack */
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70:Core/Src/sysmem.c **** if (__sbrk_heap_end + incr > max_heap)
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60 .loc 1 70 3 is_stmt 1 view .LVU13
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61 .loc 1 70 23 is_stmt 0 view .LVU14
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62 000e 0C48 ldr r0, .L8+8
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63 0010 0068 ldr r0, [r0]
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64 0012 0344 add r3, r3, r0
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65 .LVL3:
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66 .loc 1 70 6 view .LVU15
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67 0014 521A subs r2, r2, r1
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68 0016 9342 cmp r3, r2
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69 0018 06D8 bhi .L7
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71:Core/Src/sysmem.c **** {
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72:Core/Src/sysmem.c **** errno = ENOMEM;
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73:Core/Src/sysmem.c **** return (void *)-1;
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74:Core/Src/sysmem.c **** }
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75:Core/Src/sysmem.c ****
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76:Core/Src/sysmem.c **** prev_heap_end = __sbrk_heap_end;
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70 .loc 1 76 3 is_stmt 1 view .LVU16
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71 .LVL4:
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77:Core/Src/sysmem.c **** __sbrk_heap_end += incr;
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72 .loc 1 77 3 view .LVU17
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73 .loc 1 77 19 is_stmt 0 view .LVU18
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74 001a 094A ldr r2, .L8+8
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75 001c 1360 str r3, [r2]
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78:Core/Src/sysmem.c ****
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79:Core/Src/sysmem.c **** return (void *)prev_heap_end;
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76 .loc 1 79 3 is_stmt 1 view .LVU19
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77 .LVL5:
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78 .L1:
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80:Core/Src/sysmem.c **** }
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79 .loc 1 80 1 is_stmt 0 view .LVU20
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80 001e 10BD pop {r4, pc}
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81 .LVL6:
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82 .L6:
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66:Core/Src/sysmem.c **** }
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83 .loc 1 66 5 is_stmt 1 view .LVU21
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66:Core/Src/sysmem.c **** }
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84 .loc 1 66 21 is_stmt 0 view .LVU22
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85 0020 0748 ldr r0, .L8+8
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86 0022 084C ldr r4, .L8+12
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87 0024 0460 str r4, [r0]
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88 0026 F2E7 b .L2
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89 .LVL7:
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90 .L7:
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ARM GAS /tmp/ccEFOvop.s page 4
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72:Core/Src/sysmem.c **** return (void *)-1;
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91 .loc 1 72 5 is_stmt 1 view .LVU23
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92 0028 FFF7FEFF bl __errno
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93 .LVL8:
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72:Core/Src/sysmem.c **** return (void *)-1;
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94 .loc 1 72 11 is_stmt 0 view .LVU24
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95 002c 0C23 movs r3, #12
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96 002e 0360 str r3, [r0]
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73:Core/Src/sysmem.c **** }
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97 .loc 1 73 5 is_stmt 1 view .LVU25
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73:Core/Src/sysmem.c **** }
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98 .loc 1 73 12 is_stmt 0 view .LVU26
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99 0030 4FF0FF30 mov r0, #-1
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100 0034 F3E7 b .L1
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101 .L9:
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102 0036 00BF .align 2
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103 .L8:
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104 0038 00000000 .word _estack
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105 003c 00000000 .word _Min_Stack_Size
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106 0040 00000000 .word .LANCHOR0
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107 0044 00000000 .word _end
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108 .cfi_endproc
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109 .LFE0:
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111 .section .bss.__sbrk_heap_end,"aw",%nobits
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112 .align 2
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113 .set .LANCHOR0,. + 0
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116 __sbrk_heap_end:
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117 0000 00000000 .space 4
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118 .text
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119 .Letext0:
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120 .file 2 "/usr/lib/gcc/arm-none-eabi/10.3.1/include/stddef.h"
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121 .file 3 "/usr/lib/gcc/arm-none-eabi/10.3.1/include/stdint.h"
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122 .file 4 "/usr/include/newlib/sys/errno.h"
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ARM GAS /tmp/ccEFOvop.s page 5
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DEFINED SYMBOLS
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*ABS*:0000000000000000 sysmem.c
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/tmp/ccEFOvop.s:18 .text._sbrk:0000000000000000 $t
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/tmp/ccEFOvop.s:26 .text._sbrk:0000000000000000 _sbrk
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/tmp/ccEFOvop.s:104 .text._sbrk:0000000000000038 $d
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/tmp/ccEFOvop.s:112 .bss.__sbrk_heap_end:0000000000000000 $d
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/tmp/ccEFOvop.s:116 .bss.__sbrk_heap_end:0000000000000000 __sbrk_heap_end
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UNDEFINED SYMBOLS
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__errno
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_estack
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_Min_Stack_Size
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_end
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