FEATS@VTVM1.BITNET (Steve Greenfield) (12/14/89)
Under VSE there is a macro called JDUMP which is used to dump a piece of core between two specified locations and dump the registers. It is a handy debugger for batch assembler programs. Now that I'm working on MVS/XA I have been pouring over the macro books and have not found an equivalent. Can anybody point me in the right direction? Steve Greenfield Virginia Tech Computing Center Blacksburg, Virginia
K07@DHDURZ1.BITNET (Georg Jagoda) (12/14/89)
>Under VSE there is a macro called JDUMP which is used to dump a piece of >core between two specified locations and dump the registers. It is a >handy debugger for batch assembler programs. Now that I'm working on >MVS/XA I have been pouring over the macro books and have not found an >equivalent. Can anybody point me in the right direction? > >Steve Greenfield >Virginia Tech Computing Center >Blacksburg, Virginia Under MVS there is a macro called SNAP. I wrote a module that will dump two areas. The two pairs of addresses are supplied by the main program: K07SNAP TITLE ' K07SNAP' K07SNAP CSECT USING K07SNAP,R12 STM R14,R12,12(R13) STORE CALLERS REGS LR R12,R15 LA R2,SAVEAREA ST R2,8(,R13) PLAY THE ST R13,4(,R2) SAVEAREA GAME LR R13,R2 LA R11,2048(R12) LA R11,2048(R11) USING K07SNAP,R12,R11 LR R3,R1 OPEN MF=(E,OUTPUT) SNAP DCB=DCB, * LIST=(R3), * STRHDR=STRHDR CLOSE (,FREE),MF=(E,OUTPUT) L R13,4(,R13) GET CALLERS SAVE AREA ADDR L R14,12(,R13) RESTORE REGS LM R0,R12,20(R13) RESTORE REGS BR R14 AND RETURN SPACE 3 OUTPUT OPEN (DCB,(OUTPUT)),MF=L X'8F' DCB DCB DSORG=PS,DDNAME=SYSSNAP,RECFM=VBA,MACRF=W, * BLKSIZE=1632,LRECL=125 SPACE SAVEAREA DS 18F STRHDR DC A(HDR1),X'80',AL3(HDR2) HDR1 DC AL1(HDR1TL) HDR1T DC C'* ',6C' XOPER CSECT ',C' *' HDR1TL EQU *-HDR1T MAXIMALLAENGE = 100 HDR2 DC AL1(HDR2TL) HDR2T DC C'* ',6C' XOPER DSECT ',C' *' HDR2TL EQU *-HDR2T MAXIMALLAENGE = 100 SPACE PRINT NOGEN EQUREG DCBD DSORG=(PS),DEVD=(DA) END Georg Jagoda, K07 at DHDURZ1 (Rechenzentrum der Universitaet Heidelberg) Ich bin Mensch. Irren bleibt menschlich.
dbc@FERRIS.CRAY.COM (Daryl Coulthart) (12/15/89)
MVS has a set of macros to use to dump registers and storage. The main macro is snap. It should be used in conjunction with OPEN ... SNAP... CLOSE. There must be a DCB to define the file, and A JCL DD statement or a TSO allocate to define the snap file. OPEN (SNAP,OUTPUT) SNAP DBC=SNAP,id=001,pdata=(PSW,REGS), X STORAGE=(Start,end) CLOSE (SNAP) NAP DBC DDNAME=SNAPPRT,LRECL=125,BLKSIZE=882, X DSORG=PS,MACRF=(W),RECFM=VBA //SNAPPRT dd sysout=X
jcallen@Encore.COM (Jerry Callen) (12/15/89)
>Under VSE there is a macro called JDUMP which is used to dump a piece of >core between two specified locations and dump the registers. It is a >handy debugger for batch assembler programs. Now that I'm working on >MVS/XA I have been pouring over the macro books and have not found an >equivalent. Can anybody point me in the right direction? Look at the SNAP macro. It is, unfortunately, somewhat cumbersome to use; you also have to set up a DCB for the SNAP to use to write the dump. The manuals you need are: Supervisor Services and Macros (for the SNAP macro) Data Administration Macro Reference (for DCB/OPEN/CLOSE macros) If you are going to be doing any extensive assembler work on MVS/XA you should get to know the TSO "TEST" command. TEST is an interactive debugger, and it's actually pretty good (if somewhat limited). It's biggest problem is that you can't simultaneously be debugging a program and looking at the source code (unless you either print out the program or use a session manager). Ugh. -- Jerry Callen jcallen@encore.encore.com
jcallen@CS.BU.EDU (Jerry Callen) (12/15/89)
>Under VSE there is a macro called JDUMP which is used to dump a piece of >core between two specified locations and dump the registers. It is a >handy debugger for batch assembler programs. Now that I'm working on >MVS/XA I have been pouring over the macro books and have not found an >equivalent. Can anybody point me in the right direction? Look at the SNAP macro. It is, unfortunately, somewhat cumbersome to use; you also have to set up a DCB for the SNAP to use to write the dump. The manuals you need are: Supervisor Services and Macros (for the SNAP macro) Data Administration Macro Reference (for DCB/OPEN/CLOSE macros) If you are going to be doing any extensive assembler work on MVS/XA you should get to know the TSO "TEST" command. TEST is an interactive debugger, and it's actually pretty good (if somewhat limited). It's biggest problem is that you can't simultaneously be debugging a program and looking at the source code (unless you either print out the program or use a session manager). Ugh. -- Jerry Callen jcallen@encore.encore.com
kelly@UTS.AMDAHL.COM (Kelly Goen) (12/19/89)
In article <8912131906.AA11920@brazos.rice.edu> you write: >Under VSE there is a macro called JDUMP which is used to dump a piece of >core between two specified locations and dump the registers. It is a >handy debugger for batch assembler programs. Now that I'm working on >MVS/XA I have been pouring over the macro books and have not found an >equivalent. Can anybody point me in the right direction? > >Steve Greenfield >Virginia Tech Computing Center >Blacksburg, Virginia Try SNAP(MVS Sustem supervisor services and macros) -- Kelly Goen CSS Inc. DISCLAIMER: I Dont represent Amdahl Corp or Onsite consulting. Any statements ,opinions or additional data are solely my opinion and mine alone... Seen in alt.sex recently "SEX is FUN , Thats why there are so many of us!!" My Opinion: Sex between Consenting Computers leads to Social Data Diseases!