4.104.114.84.95
Last change
on this file since 0bc2339 was
981b99f,
checked in by Joel Sherrill <joel.sherrill@…>, on 08/10/99 at 16:41:44
|
Patch from Eric Valette <valette@…> and Emmanuel Raguet
<raguet@…>:
- the dec21140 driver code has been hardened (various bug fixed) Emmanuel,
- bug in the mcp750 init code have been fixed (interrupt stack/initial
stack initialization), BSS correctly cleared (Eric V)
- remote debugging over TCP/IP is nearly complete (berakpoints,
backtrace, variables,...) (Eric V),
- exception handling code has also been improved in order to fully
support RDBG requirements (Eric V),
|
-
Property mode set to
100644
|
File size:
1.3 KB
|
Line | |
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1 | /* cpu_asm.s |
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2 | * |
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3 | * This file contains all assembly code for the Intel i386 implementation |
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4 | * of RDBG. |
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5 | * |
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6 | * $Id$ |
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7 | * |
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8 | */ |
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9 | |
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10 | #include <asm.h> |
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11 | |
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12 | BEGIN_CODE |
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13 | |
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14 | /* |
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15 | * void copyback_data_cache_and_invalidate_instr_cache(addr, size) |
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16 | * |
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17 | * This routine performs a copy of the data cache |
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18 | * and invalidate the instruction cache |
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19 | */ |
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20 | |
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21 | .p2align 1 |
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22 | PUBLIC (copyback_data_cache_and_invalidate_instr_cache) |
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23 | |
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24 | SYM (copyback_data_cache_and_invalidate_instr_cache): |
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25 | wbinvd |
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26 | ret |
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27 | |
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28 | |
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29 | |
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30 | /* |
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31 | * void enterRdbg(void) |
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32 | * |
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33 | * This function perform a call to the exception 19 |
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34 | * It is used : |
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35 | * 1 - in the user code, to simulate a Breakpoint. |
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36 | * (with justSaveContext = 0) |
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37 | * 2 - in the RDBG code, to push a ctx in the list. |
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38 | * (with justSaveContext = 1) |
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39 | * |
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40 | * In most of case, it will be use as described in 1. |
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41 | * The 2nd possibility will be used by RDBG to obtain |
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42 | * its own ctx |
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43 | */ |
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44 | |
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45 | PUBLIC (enterRdbg) |
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46 | |
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47 | SYM (enterRdbg): |
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48 | int $50 |
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49 | ret |
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50 | |
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51 | |
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52 | /* |
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53 | * void rtems_exception_prologue_50(void) |
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54 | * |
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55 | * Exception 50 is used to enter Rdbg |
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56 | * |
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57 | */ |
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58 | |
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59 | .p2align 4 |
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60 | |
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61 | PUBLIC (rtems_exception_prologue_50) |
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62 | PUBLIC (_Exception_Handler) |
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63 | |
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64 | SYM (rtems_exception_prologue_50): |
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65 | pushl $ 0 |
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66 | pushl $ 50 |
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67 | jmp SYM(_Exception_Handler) ; |
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68 | |
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69 | |
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70 | END_CODE |
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71 | |
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72 | END |
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