|
Linkage |
Macro |
Function |
|---|---|---|
|
SVC 00 |
XDAP |
Reads or writes direct access volumes |
|
SVC 00 |
EXCP |
Executes a channel program for graphic access method (GAM) |
|
SVC 01 |
WAIT |
Waits for one or more events |
|
SVC 02 |
POST |
Signals event completion |
|
SVC 03 |
None |
Exits from called program |
|
SVC 04 |
GETMAIN |
Acquires user storage |
|
SVC 05 |
FREEMAIN |
Releases user-acquired storage |
|
SVC 06 |
LINK |
Passes control to another program |
|
SVC 07 |
XCTL |
Passes control to another program at the same task level and does not return to the calling program |
|
SVC 08 |
LOAD |
Reads a program into storage |
|
SVC 09 |
DELETE |
Deletes a loaded program |
|
SVC 10 |
GETMAIN/ FREEMAIN |
Manipulates user free storage |
|
SVC 11 |
TIME |
Gets the time of day |
|
SVC 13 |
ABEND |
Terminates processing with user specified completion and reason codes |
|
SVC 14 |
SPIE |
Sets up an exit to be given control under user selected program interrupts |
|
SVC 17 |
RESTORE |
NOP |
|
SVC 18 |
BLDL |
Builds a directory list for a partitioned data set |
|
SVC 18 |
FIND |
Locates a member of a partitioned data set |
|
SVC 19 |
OPEN |
Prepares a DCB for I/O processing |
|
SVC 20 |
CLOSE |
Completes and secures I/O processing on a DCB |
|
SVC 21 |
STOW |
Updates partitioned dataset directories |
|
SVC 22 |
OPEN TYPE=J |
Prepares a DCB for I/O processing after an RDJFCB has been issued |
|
SVC 23 |
CLOSE TYPE=T |
Temporarily deactivates a tape or DASD file |
|
SVC 24 |
DEVTYPE |
Obtains device-type physical characteristics |
|
SVC 25 |
TRKBAL |
NOP |
|
SVC 31 |
FEOV |
Forces an EOV condition on a tape or DASD file |
|
SVC 35 |
WTO/WTOR |
Writes a message to the operator's terminal |
|
SVC 40 |
EXTRACT |
NOP |
|
SVC 41 |
IDENTIFY |
Adds an entry name to a loaded program |
|
SVC 42 |
ATTACH |
Passes control to another program at a new task level |
|
SVC 44 |
CHAP |
NOP |
|
SVC 46 |
TTIMER |
Tests or cancels timer |
|
SVC 46 |
STIMERM |
Tests or cancels multiple timer (real time only) |
|
SVC 47 |
STIMER/STIMERM |
Sets the timer interval and the timer exit routine |
|
SVC 48 |
DEQ |
NOP |
|
SVC 51 |
SNAP |
Dumps specified areas of storage |
|
SVC 56 |
ENQ |
NOP |
|
SVC 57 |
FREEDBUF |
Releases simulated BDAM buffer |
|
SVC 60 |
STAE |
Sets up an abend exit routine in a 370 virtual machine |
|
SVC 60 |
ESTAE |
Sets up an abend exit routine in a 370, XA and XC virtual machine |
|
SVC 62 |
DETACH |
NOP |
|
SVC 63 |
CHKPT |
NOP |
|
SVC 64 |
RDJFCB |
Obtains information from FILEDEF command about an OS/MVS data set |
|
SVC 68 |
SYNADAF |
Provides SYNAD analysis function |
|
SVC 68 |
SYNADRLS |
Releases SYNADAF message and save areas |
|
SVC 69 |
BSP |
Backs up a record on a tape or disk |
|
SVC 93 |
TGET/TPUT |
Reads or writes a terminal line |
|
SVC 94 |
TCLEARQ |
Clears terminal input queue |
|
SVC 96 |
STAX |
Sets or cancels user exit for terminal attention interrupts |
|
SVC 109 |
ESPIE |
Sets up handlers for program interrupts in XA and XC modes |
|
SVC 112 |
PGRLSE |
NOP |
|
SVC 112 |
PGOUT |
NOP |
|
SVC 113 |
PGLOAD |
NOP |
|
SVC 122 |
LINK, XCTL, LOAD |
Performs a link, transfer of control, or load in XA and XC virtual machines |
|
SVC 138 |
PGSER |
NOP |
在大型機彙編裏沒有向量中斷表之說，但它本質上實現了PC彙編中的中斷向量表功能（對於中斷向量表相信大家都比較熟悉）。
本表本名爲SVC（Supervisor Calls）, 其每一個分支其實都對應着一個響應的宏...
打個比方，在HLASM程序裏我們會經常用GETMAIN/FREEMAIN來獲取/釋放內存,上表就是告訴我們，當我們在用GETMAIN的時候其實是響應了'SVC 04'的中斷，而FREEMAIN響應的是'SVC 05'的中斷。
另外讀者還可以參考本人的另一篇博文大型機彙編（mainframe assembler/HLASM）之S0C4解讀，此處有對'SVC 35'更詳細的解讀。
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