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annotate src/gpf/osl/os_isr.c @ 78:95ef11e76c5b

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src/cs/system/main/gcc: asm code pieced from Citrine
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 20 Jul 2018 06:46:56 +0000
parents 8b2a9a374324
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
6
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
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diff changeset
1 /*
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Mychaela Falconia <falcon@freecalypso.org>
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2 * This C module is a reconstruction based on the disassembly of
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Mychaela Falconia <falcon@freecalypso.org>
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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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Mychaela Falconia <falcon@freecalypso.org>
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6 /* set of included headers from COFF symtab: */
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Mychaela Falconia <falcon@freecalypso.org>
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7 #include <string.h>
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Mychaela Falconia <falcon@freecalypso.org>
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8 #include "nucleus.h"
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9 #include "typedefs.h"
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Mychaela Falconia <falcon@freecalypso.org>
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10 #include "os.h"
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Mychaela Falconia <falcon@freecalypso.org>
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11 #include "gdi.h"
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Mychaela Falconia <falcon@freecalypso.org>
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12 #include "os_types.h"
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Mychaela Falconia <falcon@freecalypso.org>
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13 #include "os_glob.h"
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Mychaela Falconia <falcon@freecalypso.org>
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14
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15 typedef unsigned char u_char;
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Mychaela Falconia <falcon@freecalypso.org>
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16
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Mychaela Falconia <falcon@freecalypso.org>
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17 extern T_OS_OSISR_TABLE_ENTRY OSISRTable[];
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
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18 extern OS_HANDLE os_int_pool_handle;
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Mychaela Falconia <falcon@freecalypso.org>
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19
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Mychaela Falconia <falcon@freecalypso.org>
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20 GLOBAL LONG
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Mychaela Falconia <falcon@freecalypso.org>
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21 os_isr_init(void)
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22 {
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Mychaela Falconia <falcon@freecalypso.org>
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23 USHORT i;
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Mychaela Falconia <falcon@freecalypso.org>
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24
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Mychaela Falconia <falcon@freecalypso.org>
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25 for (i = 1; i <= MaxOSISRs; i++)
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Mychaela Falconia <falcon@freecalypso.org>
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26 OSISRTable[i].name[0] = 0;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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27 return(OS_OK);
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Mychaela Falconia <falcon@freecalypso.org>
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28 }
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Mychaela Falconia <falcon@freecalypso.org>
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29
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Mychaela Falconia <falcon@freecalypso.org>
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30 GLOBAL LONG
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Mychaela Falconia <falcon@freecalypso.org>
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31 os_SetInterruptState(OS_INT_STATE new_state, OS_INT_STATE *old_state)
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Mychaela Falconia <falcon@freecalypso.org>
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32 {
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Mychaela Falconia <falcon@freecalypso.org>
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33 INT state;
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Mychaela Falconia <falcon@freecalypso.org>
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34
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Mychaela Falconia <falcon@freecalypso.org>
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35 if (new_state)
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Mychaela Falconia <falcon@freecalypso.org>
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36 state = NU_ENABLE_INTERRUPTS;
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Mychaela Falconia <falcon@freecalypso.org>
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37 else
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Mychaela Falconia <falcon@freecalypso.org>
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38 state = NU_DISABLE_INTERRUPTS;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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39 state = NU_Control_Interrupts(state);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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40 if (state & 0xFF)
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Mychaela Falconia <falcon@freecalypso.org>
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41 *old_state = 0;
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Mychaela Falconia <falcon@freecalypso.org>
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42 else
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Mychaela Falconia <falcon@freecalypso.org>
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43 *old_state = 1;
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Mychaela Falconia <falcon@freecalypso.org>
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44 return(OS_OK);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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45 }
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Mychaela Falconia <falcon@freecalypso.org>
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46
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Mychaela Falconia <falcon@freecalypso.org>
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47 GLOBAL LONG
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Mychaela Falconia <falcon@freecalypso.org>
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48 os_EnableInterrupts(OS_INT_STATE *old_state)
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Mychaela Falconia <falcon@freecalypso.org>
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49 {
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Mychaela Falconia <falcon@freecalypso.org>
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50 INT state;
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Mychaela Falconia <falcon@freecalypso.org>
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51
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Mychaela Falconia <falcon@freecalypso.org>
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52 state = NU_Control_Interrupts(NU_ENABLE_INTERRUPTS);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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53 if (state & 0xFF)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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54 *old_state = 0;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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55 else
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Mychaela Falconia <falcon@freecalypso.org>
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56 *old_state = 1;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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57 return(OS_OK);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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58 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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59
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Mychaela Falconia <falcon@freecalypso.org>
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60 GLOBAL LONG
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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61 os_DisableInterrupts(OS_INT_STATE *old_state)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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62 {
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Mychaela Falconia <falcon@freecalypso.org>
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63 INT state;
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Mychaela Falconia <falcon@freecalypso.org>
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64
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Mychaela Falconia <falcon@freecalypso.org>
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65 state = NU_Control_Interrupts(NU_DISABLE_INTERRUPTS);
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Mychaela Falconia <falcon@freecalypso.org>
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66 if (state & 0xFF)
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Mychaela Falconia <falcon@freecalypso.org>
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67 *old_state = 0;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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68 else
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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69 *old_state = 1;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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70 return(OS_OK);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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71 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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72
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Mychaela Falconia <falcon@freecalypso.org>
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73 GLOBAL LONG
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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74 os_DeleteOSISR(OS_HANDLE hisr_handle)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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75 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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76 OS_INT_STATE old_state, state;
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Mychaela Falconia <falcon@freecalypso.org>
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77
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Mychaela Falconia <falcon@freecalypso.org>
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78 if (hisr_handle <= 0 || hisr_handle > MaxOSISRs)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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79 return(OS_ERROR);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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80 if (OSISRTable[hisr_handle].hisr_cb.tc_activation_count)
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Mychaela Falconia <falcon@freecalypso.org>
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81 return(OS_ERROR);
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Mychaela Falconia <falcon@freecalypso.org>
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82 os_DisableInterrupts(&old_state);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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83 if (os_DeallocateMemory(os_MyHandle(), OSISRTable[hisr_handle].stack)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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84 == OS_ERROR) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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85 error: os_SetInterruptState(old_state, &state);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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86 return(OS_ERROR);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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87 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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88 if (NU_Delete_HISR(&OSISRTable[hisr_handle].hisr_cb) != NU_SUCCESS)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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89 goto error;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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90 OSISRTable[hisr_handle].name[0] = 0;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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91 os_SetInterruptState(old_state, &state);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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92 return(OS_OK);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 }
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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94
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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95 GLOBAL LONG
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 os_CreateOSISR(char *name, void (*OSISR_entry)(void),
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97 int stacksize, int priority,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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98 int flags, OS_HANDLE *hisr_handle)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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100 OS_HANDLE handle;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 T_VOID_STRUCT *hisr_stack;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 OS_INT_STATE old_state, state;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 if (priority < 0 || priority > 2)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 return(OS_ERROR);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106 priority = 2 - priority;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 os_DisableInterrupts(&old_state);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 for (handle = 1; handle <= MaxOSISRs; handle++)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 if (!strncmp(OSISRTable[handle].name, name,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
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110 RESOURCE_NAMELEN - 1)) {
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 error: os_SetInterruptState(old_state, &state);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
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:
diff changeset
115 if (!OSISRTable[handle].name[0])
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 break;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 if (handle > MaxOSISRs)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 goto error;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119 if (os_AllocateMemory(os_MyHandle(), &hisr_stack, stacksize,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 0xFFFFFFFF, os_int_pool_handle) == OS_ERROR)
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 goto error;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122 memset((u_char *)hisr_stack, INITIAL_STACK_VALUE, stacksize);
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 *hisr_stack = GUARD_PATTERN;
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 if (NU_Create_HISR(&OSISRTable[handle].hisr_cb, name, OSISR_entry,
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Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 priority, (VOID *)hisr_stack, stacksize)
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 != NU_SUCCESS)
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 goto error;
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 strncpy(OSISRTable[handle].name, name, RESOURCE_NAMELEN);
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129 OSISRTable[handle].name[RESOURCE_NAMELEN-1] = 0;
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 OSISRTable[handle].stack = hisr_stack;
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 *hisr_handle = handle;
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 os_SetInterruptState(old_state, &state);
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 return(OS_OK);
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 }
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 GLOBAL LONG
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 os_ActivateOSISR(OS_HANDLE hisr_handle)
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138 {
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 if (hisr_handle <= 0 || hisr_handle > MaxOSISRs)
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 return(OS_ERROR);
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 if (NU_Activate_HISR(&OSISRTable[hisr_handle].hisr_cb) == NU_SUCCESS)
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 return(OS_OK);
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143 else
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 return(OS_ERROR);
8b2a9a374324 src/gpf: addition of Magnetite src/gpf2
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145 }