| .TH GETCALLERPC 3 | |
| .SH NAME | |
| getcallerpc \- fetch return PC of current function | |
| .SH SYNOPSIS | |
| .br | |
| .B #include <u.h> | |
| .br | |
| .B #include <libc.h> | |
| .PP | |
| .B ulong getcallerpc(void *firstarg) | |
| .SH DESCRIPTION | |
| .I Getcallerpc | |
| is a portable way to discover the PC to which the current function will return. | |
| .I Firstarg | |
| should be a pointer to the first argument to the function in question. | |
| .SH EXAMPLE | |
| .IP | |
| .EX | |
| void | |
| printpc(ulong arg) | |
| { | |
| print("Called from %.8lux\en", getcallerpc(&arg)); | |
| } | |
| void | |
| main(int argc, char *argv[]) | |
| { | |
| printpc(0); | |
| printpc(0); | |
| printpc(0); | |
| } | |
| .EE | |
| .SH SOURCE | |
| .B \*9/src/lib9/ | |
| .SH BUGS | |
| The | |
| .I firstarg | |
| parameter should not be necessary. |