1 Jan
2013
1 Jan
'13
3:58 p.m.
It was thus said that the Great Holm Tiffe once stated:
Mouse wrote:
On the VAX, each procedure (as called by CALLG or CALLS) starts with a
16-bit word that denotes which registers to save on the stack (each bit
flags a register to save). It's not an actual instruction.
-spc
which is nonsensical enough (movzwl $0 rather
than clrl or even
movzbl $0?) to suggest to me that 20046858 is an entry mask, and indeed
disassembling it that way gives
2004684e: movl $5,1030(r6)
20046853: clrq 1034(r6)
20046857: ret
20046858: entry mask: r5 r4 r3 r2
2004685a: subl2 $24,sp
2004685d: movl $1,r5
20046860: moval 04(ap),r4
20046864: movl (r4),r1
which makes a whole lot more sense.
Cool. I don't even know what the heck an entry mask is.
Sorry, never done assembler on such an "big" machine.