Gecko [ dataharbor.africa ]

Name	Size	Permission
addr-map.c	525 B	-rw-r--r--
alloc.c	1.16 KB	-rw-r--r--
arith.c	2.24 KB	-rw-r--r--
common_session_state.h	6.76 KB	-rw-r--r--
copy.c	4 KB	-rw-r--r--
debug.h	413 B	-rw-r--r--
ilog2.h	2.87 KB	-rw-r--r--
io.c	4.43 KB	-rw-r--r--
linux_defs.h	5.58 KB	-rw-r--r--
linux_hash.h	1.83 KB	-rw-r--r--
linux_types.h	654 B	-rw-r--r--
loc2c-runtime.h	2.44 KB	-rw-r--r--
map_list.h	1.03 KB	-rw-r--r--
map_runtime.h	5.04 KB	-rw-r--r--
namespaces.h	0 B	-rw-r--r--
offptr.h	4.68 KB	-rw-r--r--
offset_list.h	4.32 KB	-rw-r--r--
perf.c	0 B	-rw-r--r--
print.c	2.37 KB	-rw-r--r--
probe_lock.h	1.81 KB	-rw-r--r--
regs.c	2.14 KB	-rw-r--r--
runtime.h	9.49 KB	-rw-r--r--
runtime_context.h	6.4 KB	-rw-r--r--
runtime_defines.h	235 B	-rw-r--r--
session_attributes.c	1.68 KB	-rw-r--r--
session_attributes.h	772 B	-rw-r--r--
shm.c	6.03 KB	-rw-r--r--
stapdyn.h	3.37 KB	-rw-r--r--
stat_runtime.h	1.79 KB	-rw-r--r--
sym.c	40 B	-rw-r--r--
task_finder.c	0 B	-rw-r--r--
timer.c	2.71 KB	-rw-r--r--
transport.c	30.4 KB	-rw-r--r--
transport.h	3.88 KB	-rw-r--r--
unwind.c	0 B	-rw-r--r--
uprobes-regs.c	1.94 KB	-rw-r--r--
uprobes.c	1.76 KB	-rw-r--r--
uprobes.h	953 B	-rw-r--r--

Code Editor : uprobes-regs.c

/* -*- linux-c -*-
 * function for preparing registers for dyninst-based uprobes
 * Copyright (C) 2012-2013 Red Hat Inc.
 *
 * This file is part of systemtap, and is free software.  You can
 * redistribute it and/or modify it under the terms of the GNU General
 * Public License (GPL); either version 2, or (at your option) any
 * later version.
 */

#ifndef _UPROBES_REGS_DYNINST_C_
#define _UPROBES_REGS_DYNINST_C_

int enter_dyninst_uprobe_regs(uint64_t index, unsigned long nregs, ...)
{
	struct pt_regs regs = {};

va_list varegs;
	va_start(varegs, nregs);

#ifdef __i386__
	// XXX Dyninst currently has a bug where it's only passing a 32-bit
	// index, which means nregs gets stuffed into the upper bits of index,
	// and the varegs are all off by one.  Hacking it into shape for now...
	if (index > UINT32_MAX) {
		SET_REG_IP((&regs), nregs);
                nregs = index >> 32;
                index &= UINT32_MAX;
        } else
#endif
	if (likely(nregs > 0))
		SET_REG_IP((&regs), va_arg(varegs, unsigned long));

#if defined(__i386__) || defined(__x86_64__)
	/* NB: x86 pt_regs_store_register() expects literal register numbers to
	 * paste as CPP tokens, so unfortunately this has to be unrolled.  */
#define SET_REG(n) if (likely(n < nregs - 1)) \
			pt_regs_store_register((&regs), n, \
					va_arg(varegs, unsigned long))
	SET_REG(0);
	SET_REG(1);
	SET_REG(2);
	SET_REG(3);
	SET_REG(4);
	SET_REG(5);
	SET_REG(6);
	SET_REG(7);
#if defined(__x86_64__)
	SET_REG(8);
	SET_REG(9);
	SET_REG(10);
	SET_REG(11);
	SET_REG(12);
	SET_REG(13);
	SET_REG(14);
	SET_REG(15);
#endif
#undef SET_REG

#else

#if defined(__powerpc__) || defined(__powerpc64__)
#define MAX_REG 32
#else
#error "Unknown architecture!"
#endif
	for (unsigned long r = 0; r < MAX_REG && r < nregs - 1; ++r)
		pt_regs_store_register((&regs), r,
				va_arg(varegs, unsigned long));
#undef MAX_REG

#endif

va_end(varegs);

return enter_dyninst_uprobe(index, &regs);
}

#endif /* _UPROBES_REGS_DYNINST_C_ */

${this.title}

Code Editor : uprobes-regs.c