99trace

Overview ¶

Command 99trace traces execution of binary programs produced by the 99c compiler.

The trace is output to stderr.

Usage ¶

To trace a compiled program named a.out

99trace a.out [arguments]

Installation ¶

To install or update 99trace

$ go get [-u] -tags virtual.trace github.com/cznic/99c/99trace

Online documentation: godoc.org/github.com/cznic/99c/99trace(http://godoc.org/github.com/cznic/99c/99trace)

Changelog ¶

2017-10-09: Initial public release.

Sample ¶

Example session

$ cd ../examples/hello/
$ 99c hello.c && 99trace a.out 2>log
hello world
$ cat log
# _start
0x00002	func	; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:13:1
0x00003		arguments      		; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:14:1
0x00004		push64         (ds)	; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:14:1
0x00005		push64         (ds+0x10); /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:14:1
0x00006		push64         (ds+0x20); /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:14:1
0x00007		#register_stdfiles	; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:14:1
0x00008		arguments      		; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:15:1
0x00009		sub            sp, 0x8	; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:15:1
0x0000a		arguments      		; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:15:1
0x0000b		push32         (ap-0x8)	; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:15:1
0x0000c		push64         (ap-0x10); /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:15:1
0x0000d		call           0x16	; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:15:1
# main
0x00016	func	; hello.c:3:1
0x00017		push           ap	; hello.c:3:1
0x00018		zero32         		; hello.c:3:1
0x00019		store32        		; hello.c:3:1
0x0001a		arguments      		; hello.c:3:1
0x0001b		push           ts+0x0	; hello.c:4:1
0x0001c		#printf        		; hello.c:4:1
0x0001d		return         		; hello.c:4:1

0x0000e	#exit          	; /home/jnml/src/github.com/cznic/ccir/libc/crt0.c:15:1

$