I am using a pointer to buffer to read in data the data name is
thread_ptr->buffer buffer is define char[2100]
Here is code when I call the read notice it bumps register 4 21000 bytes to
get the address of buffer
_read(thread_ptr->fh, &thread_ptr->buffer[0], reclen);
L 2,@113thread_ptr
LY 4,21000(0,2) (*)threadstor.threadstor.fh
LLH 14,@123reclen
"IBMUSER.DBGR.SERVER(OPENFILE)" Page 68
R14
rce Statement HLASM R6.0 2020/04/28 21.34
L 0,#WSA_1
L 15,=V(@READ)
LA 1,224(,13) #MX_TEMP1
ST 4,224(,13) #MX_TEMP1
ST 2,228(,13) #MX_TEMP1
ST 14,232(,13) #MX_TEMP1
MVC 8(4,13),#NAB_1+4
SAC 0
BASR 14,15
SAC 512
Here is code where I am trying to copy pos 10 of buffer for 2 bytes notice
there is no LY for 21000 to get to buffer ?
memcpy(&reclen, &thread_ptr->buffer[10],2);
L 14,@113thread_ptr
CPYA 2,14
MVC @123reclen,10(14)
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