Datasheet

ARMulator Basics
2-8 Copyright © 1999-2001 ARM Limited. All rights reserved. ARM DUI0058D
Trace instructions (I lines)
The format of the trace instruction (I) lines is as follows:
[ IT | IS ] <instr_addr> <opcode> [<disassembly>]
For example:
IT 00008044 e04ec00f SUB r12,r14,pc
where:
IT indicates that the instruction was taken.
IS indicates that the instruction was skipped (almost all ARM
instructions are conditional).
<instr_addr> shows the address of the instruction in hexadecimal format, for
example
00008044 .
<opcode> gives the opcode in hexadecimal format, for example e04ec00f .
<disassembly> gives the disassembly (uppercase if the instruction is taken), for
example,
SUB r12,r14,pc . This is optional and is enabled by
setting
Disassemble=True in peripherals.ami .
Branches with link in Thumb code appear as two entries, with the first marked:
1st instr of BL pair.
Trace events (E lines)
The format of the event (E) lines is as follows:
E <word1> <word2> <event_number>
For example:
E 00000048 00000000 10005
where:
<word1> gives the first of a pair of words, such as the pc value.
<word2> gives the second of a pair of words, such as the aborting address.
<event_number> gives an event number, for example 0x10005. This is MMU
Event_ITLBWalk . Events are described in Events on page 4-29.