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 setjmp, в каком порядке сохраняются регистры в буфере jmp_buf |
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 May 25 2008, 17:12
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Народ, подскажите, в каком порядке сохраняются регистры, текущий pc и указатели стека(SP и Y), в буфере jmp_buf в компиляторе ИАР при использовании макро setjmp? В Вин АВР всё прозрачно Код jmp_buf:
offset size description
0 16 call-saved registers (r2-r17)
16 2 frame pointer (r29:r28)
18 2 stack pointer (SPH:SPL)
20 1 status register (SREG)
21 2/3 return address (PC) (2 bytes used for <=128Kw flash)
23/24 = total size Чувствую что в ИАРе нужно внимательно изучать мап файл? Дабы потом не рассказывать для чего оно мне нужно, приведу пример кода написанного Rst7 , хотя по коду вопрос больше к автору Код ((unsigned int *)rs_task)[10]=((unsigned int)rs_rstack)+7; //SP
((unsigned int *)rs_task)[8]=((unsigned int)rs_cstack)+64; //Y
((unsigned int *)rs_task)[9]=(unsigned int)RS_TRX; //Адрес перехода просто, насколько я понимаю, то setjmp сохраняет текущий pc и указатели стека(SP и Y), и так званые localstore-регистры, остальными сохранениями заведует компилятор при переходе, тогда непонятен размер буфера задачи ну и манипуляции с ним Понимаю, что ВинАВР за уши притянут к аврам, у него один стек -- может в этом особенность? всем заранее спасибо
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May 25 2008, 20:13
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Цитата(meister @ May 25 2008, 21:13)  Прошагать setjmp слабо? Да не особо, но слабо. вырезка из листинга скомпилированного файла(мега8) Код \ 00000000 938A ST -Y, R24
\ 00000002 93FA ST -Y, R31
\ 00000004 93EA ST -Y, R30
\ 00000006 923A ST -Y, R3
\ 00000008 922A ST -Y, R2
\ 0000000A 921A ST -Y, R1
\ 0000000C 920A ST -Y, R0
\ 0000000E 937A ST -Y, R23
\ 00000010 936A ST -Y, R22
\ 00000012 935A ST -Y, R21
\ 00000014 934A ST -Y, R20
\ 00000016 933A ST -Y, R19
\ 00000018 932A ST -Y, R18
\ 0000001A 931A ST -Y, R17
\ 0000001C 930A ST -Y, R16
\ 0000001E B78F IN R24, 0x3F
122 if (!setjmp(main_task)) //Запомнили контекст осн. задачи
\ 00000020 .... LDI R16, LOW((iprx_task + 61))
\ 00000022 .... LDI R17, HIGH((iprx_task + 61))
\ 00000024 .... RCALL ?setjmp_0 меп файл, сегмент setjmp Код ?setjmp_0 0000144E TCP_init (main)
_sliprx (main)
_tcp_delay (main)
_txb (main)
delayint (main)
rxint (main)
txint (main)
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 1. Intra module refs: ?setjmp_0
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_1 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 2. Intra module refs: ?setjmp_1
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_2 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 3. Intra module refs: ?setjmp_2
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_3 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 4. Intra module refs: ?setjmp_3
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_4 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 5. Intra module refs: ?setjmp_4
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_5 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 6. Intra module refs: ?setjmp_5
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_6 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 7. Intra module refs: ?setjmp_6
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_7 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 8. Intra module refs: ?setjmp_7
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_8 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 9. Intra module refs: ?setjmp_8
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_9 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 10. Intra module refs: ?setjmp_9
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_10 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E, align: 1
Segment part 11. Intra module refs: ?setjmp_10
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_11 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000144E - 00001451 (0x4 bytes), align: 1
Segment part 12. Intra module refs: ?setjmp_11
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_12 0000144E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001452 - 00001453 (0x2 bytes), align: 1
Segment part 13. Intra module refs: ?setjmp_0
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R15 00001452
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001454 - 00001455 (0x2 bytes), align: 1
Segment part 14. Intra module refs: ?setjmp_1
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R14 00001454
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001456 - 00001457 (0x2 bytes), align: 1
Segment part 15. Intra module refs: ?setjmp_2
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R13 00001456
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001458 - 00001459 (0x2 bytes), align: 1
Segment part 16. Intra module refs: ?setjmp_3
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R12 00001458
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000145A - 0000145B (0x2 bytes), align: 1
Segment part 17. Intra module refs: ?setjmp_4
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R11 0000145A
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000145C - 0000145D (0x2 bytes), align: 1
Segment part 18. Intra module refs: ?setjmp_5
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R10 0000145C
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000145E - 0000145F (0x2 bytes), align: 1
Segment part 19. Intra module refs: ?setjmp_6
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R9 0000145E
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001460 - 00001461 (0x2 bytes), align: 1
Segment part 20. Intra module refs: ?setjmp_7
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R8 00001460
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001462 - 00001463 (0x2 bytes), align: 1
Segment part 21. Intra module refs: ?setjmp_8
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R7 00001462
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001464 - 00001465 (0x2 bytes), align: 1
Segment part 22. Intra module refs: ?setjmp_9
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R6 00001464
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001466 - 00001467 (0x2 bytes), align: 1
Segment part 23. Intra module refs: ?setjmp_10
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R5 00001466
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 00001468 - 00001469 (0x2 bytes), align: 1
Segment part 24. Intra module refs: ?setjmp_11
ENTRY ADDRESS REF BY
===== ======= ======
?setjmp_save_R4 00001468
-------------------------------------------------------------------------
CODE
Relative segment, address: CODE 0000146A - 0000148D (0x24 bytes), align: 1
Segment part 25. Intra module refs: ?setjmp_12 подкажите где здесь сохраняется текущий pc и указатели стека? 0x3F - это регистр статуса. Код приведённый в первом посте не из этой оперы
--------------------
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May 26 2008, 06:05
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Йа моск ;)
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Из: Kharkiv-city
Пользователь №: 6 610
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Исходник библиотеки есть в про-версии Код ;----------------------------------------------------------------------------
;
; Library routines for the ATMEL AT90S processors
; setjmp/longjmp
;
; Copyright 1996-1998 IAR Systems. All rights reserved.
;
; $Revision: 1.12 $
;
;----------------------------------------------------------------------------
#include "macros.m90"
PUBLISH MACRO
PUBLIC ?\1_0
PUBLIC ?\1_1
PUBLIC ?\1_2
PUBLIC ?\1_3
PUBLIC ?\1_4
PUBLIC ?\1_5
PUBLIC ?\1_6
PUBLIC ?\1_7
PUBLIC ?\1_8
PUBLIC ?\1_9
PUBLIC ?\1_10
PUBLIC ?\1_11
PUBLIC ?\1_12
ENDM
ENTRY MACRO
\1 0,1,R15
\1 1,2,R14
\1 2,3,R13
\1 3,4,R12
\1 4,5,R11
\1 5,6,R10
\1 6,7,R9
\1 7,8,R8
\1 8,9,R7
\1 9,10,R6
\1 10,11,R5
\1 11,12,R4
\1 12
ENDM
REGS MACRO
\1 R15
\1 R14
\1 R13
\1 R12
\1 R11
\1 R10
\1 R9
\1 R8
\1 R7
\1 R6
\1 R5
\1 R4
ENDM
SAVE MACRO
RSEG CODE:CODE:NOROOT
PUBLIC ?setjmp_save_\1
?setjmp_save_\1:
ST Z+,\1
ENDM
RESTORE MACRO
RSEG CODE:CODE:NOROOT
PUBLIC ?longjmp_restore_\1
?longjmp_restore_\1:
LD \1,Z+
ENDM
ENTRY1 MACRO
RSEG CODE:CODE:NOROOT
?setjmp_\1:
IF _args > 1
REQUIRE ?setjmp_\2
IF _args > 2
REQUIRE ?setjmp_save_\3
ENDIF
ENDIF
ENDM
ENTRY2 MACRO
RSEG CODE:CODE:NOROOT
?longjmp_\1:
IF _args > 1
REQUIRE ?longjmp_\2
IF _args > 2
REQUIRE ?longjmp_restore_\3
ENDIF
ENDIF
ENDM
#define SPL 0x3D
#define SPH 0x3E
#ifdef __XMEGA_CORE__
#define CCP 0x34
#endif /* __XMEGA_CORE__ */
;-------------------------------------------------------------------------
;
; Function: setjmp
;
; Created: 18/Jun/96 IANP
;
; Inputs: P2:P1:P0 - jmp_buf
;
; Returns: P2:P1:P0 - == 0 when the buffer is set up,
; != 0 when returning from a longjmp
;
; Size:
;
; Destroys: T0 T1 T2 T3 Z (and all other scratch registers
; if returning from a longjmp).
;
; Description:
; Store the stack and register environment in the buffer pointed to
; by P2:P1:P0. PC, SP, Y, and all non-scratch registers are stored.
;
;-------------------------------------------------------------------------
MODULE setjmp
PUBLISH setjmp
ENTRY ENTRY1
MOV Z0,P0
#if (A90_POINTER_REG_SIZE > 1)
#if (MEMORY_MODEL == SMALL_MEMORY_MODEL) || (MEMORY_MODEL == LARGE_MEMORY_MODEL)
MOV Z1,P1
#else
LDI Z1,0 ; Running -v[3,5] -mt
#endif
#if (A90_POINTER_REG_SIZE == 3)
#if (MEMORY_MODEL == SMALL_MEMORY_MODEL)
CLR T0
OUT RAMPZ,T0
#else
OUT RAMPZ,P2
#endif
#endif
#endif
REQUIRE ?SAVE_R24
REGS SAVE
RSEG CODE:CODE:NOROOT
?SAVE_R24:
ST Z+,R24 ; save R24
ST Z+,R25 ; save R25
ST Z+,R26 ; save R26
ST Z+,R27 ; save R27
ST Z+,Y0 ; save Y0
ST Z+,Y1 ; save Y1
;; read PC by popping the return address stack
#ifdef A90_LARGE_CODE
POP T2
#endif
POP T1
POP T0
ST Z+,T0 ; save PC low
ST Z+,T1 ; save PC high
#ifdef A90_LARGE_CODE
ST Z+,T2 ; save PC highest
#endif
;; read SP from SFR SP
IN T3,SPL
ST Z+,T3 ; save SP low
#if A90_POINTER_REG_SIZE > 1
IN T3,SPH
ST Z+,T3 ; save SP high
#endif
LDI P0,0 ; return value 0
LDI P1,0
#ifdef __HAS_ENHANCED_CORE__
MOVW Z1:Z0,T1:T0
#else
MOV Z0,T0
MOV Z1,T1
#endif
#ifdef A90_LARGE_CODE
OUT EIND,T2
EIJMP ; return
#else
IJMP
#endif
ENDMOD
;-------------------------------------------------------------------------
;
; Function: longjmp
;
; Created: 18/Jun/96 IANP
;
; Inputs: P2:P1:P0 - jmp_buf
; Q1:Q0 - value to give as "return" from setjmp
;
; Returns: (not applicable)
;
; Size:
;
; Destroys: All scratch registers.
;
; Description:
; Restore the stack and register environment from the buffer pointed to
; by P2:P1:P0. PC, SP, Y, and all non-scratch registers are stored.
;
;-------------------------------------------------------------------------
MODULE longjmp
PUBLISH longjmp
#if (A90_POINTER_REG_SIZE == 3) && (MEMORY_MODEL == LARGE_MEMORY_MODEL)
#define V0 Q0
#define V1 Q1
#else
#define V0 R18
#define V1 R19
#endif
ENTRY ENTRY2
MOV Z0,P0
#if A90_POINTER_REG_SIZE > 1
#if (MEMORY_MODEL == SMALL_MEMORY_MODEL) || (MEMORY_MODEL == LARGE_MEMORY_MODEL)
MOV Z1,P1
#else
CLR Z1 ; Running -v[3,5] -mt
#endif
#if (A90_POINTER_REG_SIZE == 3)
CLR T0
#if (MEMORY_MODEL == SMALL_MEMORY_MODEL)
OUT RAMPZ,T0
#else
OUT RAMPZ,P2
#endif
OUT RAMPD,T0 ; Keep RAMPD zero
#endif
#endif
MOV P0,V0
MOV P1,V1 ; return value
OR V0,V1
BRNE ?SKIP
LDI P0,1 ; zero return --> make it non-zero
?SKIP: REQUIRE ?RESTORE_R24
REGS RESTORE
RSEG CODE:CODE:NOROOT
?RESTORE_R24:
LD R24,Z+ ; restore R24
LD R25,Z+ ; restore R25
LD R26,Z+ ; restore R26
LD R27,Z+ ; restore R27
#ifdef __XMEGA_CORE__
LD Q0,Z+ ; restore Y0
LD Q1,Z+ ; restore Y1
MOVW Y1:Y0,Q1:Q0
#else /* Classic */
;; Disable interrupts while restoring SP and Y
IN Q0,SREG
CLI ; disable interrupt
LD Y0,Z+ ; restore Y0
LD Y1,Z+ ; restore Y1
#endif /* !Classic */
;; saved PC
LD T0,Z+ ; restore PC low
LD T1,Z+ ; restore PC high
#ifdef A90_LARGE_CODE
LD T2,Z+ ; restore PC highest
#endif
#ifdef __XMEGA_CORE__
LDI Q0,0x9D
LD Q1,Z+ ; restore SP low
LD Q2,Z+ ; restore SP high
OUT CCP,Q0
;; store saved SP in SFR SP, while interrupts are disabled
OUT SPL,Q1
OUT SPH,Q2
#else /* Classic */
;; store saved SP in SFR SP, while interrupts are disabled
LD T3,Z+ ; restore SP low
OUT SPL,T3
#if A90_POINTER_REG_SIZE > 1
LD T3,Z+ ; restore SP high
OUT SPH,T3
#endif
;; Restore interrupt flag
OUT SREG,Q0
#endif /* !Classic */
#ifdef __HAS_ENHANCED_CORE__
MOVW Z1:Z0,T1:T0
#else
MOV Z0,T0
MOV Z1,T1
#endif
#ifdef A90_LARGE_CODE
OUT EIND,T2
EIJMP ; return
#else
IJMP
#endif
END
;----------------------------------------------------------------------------
; $Log: l05.s90 $
; Revision 1.12 2007/09/17 13:44:18Z IPEO
; Revision 1.11 2003/12/09 11:34:30Z IPEO
; Revision 1.10 2003/10/24 11:45:21Z IPEO
; Revision 1.9 2003/10/10 14:06:42Z IPEO
; S031011110A
; Revision 1.8 2003/10/01 12:19:54Z IPEO
; Revision 1.7 2003/09/03 13:05:10Z IPEO
; Revision 1.6 2003/08/22 14:09:14Z IPEO
; Revision 1.5 2003/08/22 08:54:13Z IPEO
; Revision 1.4 2003/08/20 08:39:01Z IPEO
; Revision 1.3 2003/08/05 15:35:25Z IPEO
; Revision 1.2 2002/11/27 16:45:48Z IPEO
; Revision 1.4 2000/12/07 14:48:17 daniel
; Revision 1.3 2000/10/19 09:17:46 daniel
; Revision 1.2 2000/05/31 14:55:23 daniel
; Revision 1.1 1999/10/18 09:06:31 daniel
; Initial revision
--------------------
"Практика выше (теоретического) познания, ибо она имеет не только достоинство всеобщности, но и непосредственной действительности." - В.И. Ленин
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Jun 12 2008, 08:11
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Местный
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Цитата(IgorKossak @ Jun 11 2008, 20:17) Выдержка из файла macros.m90 /* Register nicknames */ Всё намного проще чем ожидалось  Спасибо Игорь!
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