FreeCalypso > hg > fc-magnetite
annotate src/gpf2/osl/os_isr.c @ 516:1ed9de6c90bd
src/g23m-gsm/sms/sms_for.c: bogus malloc removed
The new error handling code that was not present in TCS211 blob version
contains a malloc call that is bogus for 3 reasons:
1) The memory allocation in question is not needed in the first place;
2) libc malloc is used instead of one of the firmware's proper ways;
3) The memory allocation is made inside a function and then never freed,
i.e., a memory leak.
This bug was caught in gcc-built FreeCalypso fw projects (Citrine
and Selenite) because our gcc environment does not allow any use of
libc malloc (any reference to malloc produces a link failure),
but this code from TCS3.2 is wrong even for Magnetite: if this code
path is executed repeatedly over a long time, the many small allocations
made by this malloc call without a subsequent free will eventually
exhaust the malloc heap provided by the TMS470 environment, malloc will
start returning NULL, and the bogus code will treat it as an error.
Because the memory allocation in question is not needed at all,
the fix entails simply removing it.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 22 Jul 2018 06:04:49 +0000 |
parents | 10c059efb3d1 |
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rev | line source |
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487
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1 /* |
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2 * This C module is a reconstruction based on the disassembly of |
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3 * os_isr.obj in frame_na7_db_fl.lib from the Leonardo package. |
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4 */ |
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5 |
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6 /* set of included headers from COFF symtab: */ |
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7 #include <string.h> |
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8 #include "nucleus.h" |
487
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9 #include "typedefs.h" |
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10 #include "os.h" |
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11 #include "gdi.h" |
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12 #include "os_types.h" |
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13 #include "os_glob.h" |
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14 |
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15 typedef unsigned char u_char; |
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16 |
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17 extern T_OS_OSISR_TABLE_ENTRY OSISRTable[]; |
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18 extern OS_HANDLE os_int_pool_handle; |
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19 |
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20 GLOBAL LONG |
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21 os_isr_init(void) |
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22 { |
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23 USHORT i; |
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24 |
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25 for (i = 1; i <= MaxOSISRs; i++) |
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26 OSISRTable[i].name[0] = 0; |
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27 return(OS_OK); |
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28 } |
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29 |
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30 GLOBAL LONG |
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31 os_SetInterruptState(OS_INT_STATE new_state, OS_INT_STATE *old_state) |
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32 { |
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33 INT state; |
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34 |
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35 if (new_state) |
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36 state = NU_ENABLE_INTERRUPTS; |
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37 else |
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38 state = NU_DISABLE_INTERRUPTS; |
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39 state = NU_Control_Interrupts(state); |
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40 if (state & 0xFF) |
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41 *old_state = 0; |
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42 else |
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43 *old_state = 1; |
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44 return(OS_OK); |
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45 } |
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46 |
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47 GLOBAL LONG |
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48 os_EnableInterrupts(OS_INT_STATE *old_state) |
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49 { |
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50 INT state; |
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51 |
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52 state = NU_Control_Interrupts(NU_ENABLE_INTERRUPTS); |
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53 if (state & 0xFF) |
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54 *old_state = 0; |
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55 else |
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56 *old_state = 1; |
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57 return(OS_OK); |
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58 } |
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59 |
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60 GLOBAL LONG |
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61 os_DisableInterrupts(OS_INT_STATE *old_state) |
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62 { |
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63 INT state; |
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64 |
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65 state = NU_Control_Interrupts(NU_DISABLE_INTERRUPTS); |
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66 if (state & 0xFF) |
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67 *old_state = 0; |
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68 else |
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69 *old_state = 1; |
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70 return(OS_OK); |
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71 } |
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72 |
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73 GLOBAL LONG |
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74 os_DeleteOSISR(OS_HANDLE hisr_handle) |
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75 { |
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76 OS_INT_STATE old_state, state; |
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77 |
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78 if (hisr_handle <= 0 || hisr_handle > MaxOSISRs) |
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79 return(OS_ERROR); |
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80 if (OSISRTable[hisr_handle].hisr_cb.tc_activation_count) |
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81 return(OS_ERROR); |
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82 os_DisableInterrupts(&old_state); |
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83 if (os_DeallocateMemory(os_MyHandle(), OSISRTable[hisr_handle].stack) |
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84 == OS_ERROR) { |
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85 error: os_SetInterruptState(old_state, &state); |
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86 return(OS_ERROR); |
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87 } |
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88 if (NU_Delete_HISR(&OSISRTable[hisr_handle].hisr_cb) != NU_SUCCESS) |
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89 goto error; |
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90 OSISRTable[hisr_handle].name[0] = 0; |
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91 os_SetInterruptState(old_state, &state); |
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92 return(OS_OK); |
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93 } |
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94 |
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95 GLOBAL LONG |
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96 os_CreateOSISR(char *name, void (*OSISR_entry)(void), |
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97 int stacksize, int priority, |
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98 int flags, OS_HANDLE *hisr_handle) |
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99 { |
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100 OS_HANDLE handle; |
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101 T_VOID_STRUCT *hisr_stack; |
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102 OS_INT_STATE old_state, state; |
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103 |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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104 if (priority < 0 || priority > 2) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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105 return(OS_ERROR); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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106 priority = 2 - priority; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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107 os_DisableInterrupts(&old_state); |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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108 for (handle = 1; handle <= MaxOSISRs; handle++) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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109 if (!strncmp(OSISRTable[handle].name, name, |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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110 RESOURCE_NAMELEN - 1)) { |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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111 error: os_SetInterruptState(old_state, &state); |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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112 return(OS_ERROR); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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113 } |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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114 for (handle = 1; handle <= MaxOSISRs; handle++) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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115 if (!OSISRTable[handle].name[0]) |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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116 break; |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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117 if (handle > MaxOSISRs) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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118 goto error; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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119 if (os_AllocateMemory(os_MyHandle(), &hisr_stack, stacksize, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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120 0xFFFFFFFF, os_int_pool_handle) == OS_ERROR) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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121 goto error; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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122 memset((u_char *)hisr_stack, INITIAL_STACK_VALUE, stacksize); |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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123 *hisr_stack = GUARD_PATTERN; |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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124 if (NU_Create_HISR(&OSISRTable[handle].hisr_cb, name, OSISR_entry, |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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125 priority, (VOID *)hisr_stack, stacksize) |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
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126 != NU_SUCCESS) |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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127 goto error; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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128 strncpy(OSISRTable[handle].name, name, RESOURCE_NAMELEN); |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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129 OSISRTable[handle].name[RESOURCE_NAMELEN-1] = 0; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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130 OSISRTable[handle].stack = hisr_stack; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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131 *hisr_handle = handle; |
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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changeset
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132 os_SetInterruptState(old_state, &state); |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
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133 return(OS_OK); |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
134 } |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
135 |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
136 GLOBAL LONG |
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src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
137 os_ActivateOSISR(OS_HANDLE hisr_handle) |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
138 { |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
139 if (hisr_handle <= 0 || hisr_handle > MaxOSISRs) |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
140 return(OS_ERROR); |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
141 if (NU_Activate_HISR(&OSISRTable[hisr_handle].hisr_cb) == NU_SUCCESS) |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
142 return(OS_OK); |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
143 else |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
144 return(OS_ERROR); |
91e8dac34ada
src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff
changeset
|
145 } |