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>
date Sun, 22 Jul 2018 06:04:49 +0000
parents 10c059efb3d1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
487
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
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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>
492
10c059efb3d1 OSL: os_isr.c compiles
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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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104 if (priority < 0 || priority > 2)
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105 return(OS_ERROR);
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106 priority = 2 - priority;
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107 os_DisableInterrupts(&old_state);
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108 for (handle = 1; handle <= MaxOSISRs; handle++)
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109 if (!strncmp(OSISRTable[handle].name, name,
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110 RESOURCE_NAMELEN - 1)) {
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111 error: os_SetInterruptState(old_state, &state);
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112 return(OS_ERROR);
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diff changeset
113 }
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diff changeset
114 for (handle = 1; handle <= MaxOSISRs; handle++)
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115 if (!OSISRTable[handle].name[0])
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parents:
diff changeset
116 break;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 if (handle > MaxOSISRs)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 goto error;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 if (os_AllocateMemory(os_MyHandle(), &hisr_stack, stacksize,
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 0xFFFFFFFF, os_int_pool_handle) == OS_ERROR)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 goto error;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 memset((u_char *)hisr_stack, INITIAL_STACK_VALUE, stacksize);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 *hisr_stack = GUARD_PATTERN;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 if (NU_Create_HISR(&OSISRTable[handle].hisr_cb, name, OSISR_entry,
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 priority, (VOID *)hisr_stack, stacksize)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 != NU_SUCCESS)
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 goto error;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 strncpy(OSISRTable[handle].name, name, RESOURCE_NAMELEN);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 OSISRTable[handle].name[RESOURCE_NAMELEN-1] = 0;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 OSISRTable[handle].stack = hisr_stack;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 *hisr_handle = handle;
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 os_SetInterruptState(old_state, &state);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 return(OS_OK);
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 }
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135
91e8dac34ada src/gpf2/osl: initial import from old freecalypso-sw tree
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 GLOBAL LONG
91e8dac34ada 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 }