glebfm/strace
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

arm, i386: use PTRACE_GETREGSET if available

Browse Source 
* syscall.c [ARM || I386 || X86_64] (get_regset): New function.
(get_regs) [ARM || I386 || X86_64]: Use it.
This commit is contained in:
Дмитрий Левин 2013-03-17 23:48:45 +00:00
parent 32c049a9d8
commit faa177e3d9
1 changed files with 42 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
syscall.c
View File

@ -988,27 +988,54 @@ undefined_scno_name(struct tcb *tcp)
#ifndef get_regs
long get_regs_error;
#if defined(PTRACE_GETREGSET) && defined(NT_PRSTATUS)
# if defined(ARM)
static void get_regset(pid_t pid)
{
static struct iovec arm_io = {
.iov_base = &arm_regs,
.iov_len = sizeof(arm_regs)
};
get_regs_error = ptrace(PTRACE_GETREGSET, pid,
NT_PRSTATUS, (long) &arm_io);
}
# elif defined(I386)
static void get_regset(pid_t pid)
{
static struct iovec i386_io = {
.iov_base = &i386_regs,
.iov_len = sizeof(i386_regs)
};
get_regs_error = ptrace(PTRACE_GETREGSET, pid,
NT_PRSTATUS, (long) &i386_io);
}
# elif defined(X86_64)
static void get_regset(pid_t pid)
{
/* x86_io.iov_base = &x86_regs_union; - already is */
x86_io.iov_len = sizeof(x86_regs_union);
get_regs_error = ptrace(PTRACE_GETREGSET, pid,
NT_PRSTATUS, (long) &x86_io);
}
# endif
#endif /* PTRACE_GETREGSET && NT_PRSTATUS */
void
get_regs(pid_t pid)
{
# if defined(AVR32)
get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, &avr32_regs);
# elif defined(I386)
get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &i386_regs);
# elif defined(X32)
/* x86_io.iov_base = &x86_regs_union; - already is */
x86_io.iov_len = sizeof(x86_regs_union);
get_regs_error = ptrace(PTRACE_GETREGSET, pid,
NT_PRSTATUS, (long) &x86_io);
# elif defined(X86_64)
# elif defined(ARM) || defined(I386) || defined(X86_64)
# if defined(PTRACE_GETREGSET) && defined(NT_PRSTATUS)
static int getregset_support;
if (getregset_support >= 0) {
/* x86_io.iov_base = &x86_regs_union; - already is */
x86_io.iov_len = sizeof(x86_regs_union);
get_regs_error = ptrace(PTRACE_GETREGSET, pid,
NT_PRSTATUS, (long) &x86_io);
get_regset(pid);
if (getregset_support > 0)
return;
if (get_regs_error >= 0) {
@ -1020,6 +1047,11 @@ get_regs(pid_t pid)
getregset_support = -1;
}
# endif /* PTRACE_GETREGSET && NT_PRSTATUS */
# if defined(ARM)
get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &arm_regs);
# elif defined(I386)
get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &i386_regs);
# elif defined(X86_64)
/* Use old method, with unreliable heuristical detection of 32-bitness. */
x86_io.iov_len = sizeof(x86_64_regs);
get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (long) &x86_64_regs);
@ -1047,8 +1079,9 @@ get_regs(pid_t pid)
i386_regs.esp = x86_64_regs.rsp;
/* i386_regs.xss = x86_64_regs.ss; */
}
# elif defined(ARM)
get_regs_error = ptrace(PTRACE_GETREGS, pid, NULL, (void *)&arm_regs);
# else
# error fix me
# endif /* ARM || I386 || X86_64 */
# elif defined(AARCH64)
/*aarch64_io.iov_base = &arm_regs_union; - already is */
aarch64_io.iov_len = sizeof(arm_regs_union);