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uml: tidy fault code

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Tidying in preparation for the segfault register dumping patch which follows.

void * pointers are changed to union uml_pt_regs *.  This makes the types
match reality, except in arch_fixup, which is changed to operate on a union
uml_pt_regs.  This fixes a bug in the call from segv_handler, which passes a
union uml_pt_regs, to segv, which expects to pass a struct sigcontext to
arch_fixup.

Whitespace and other style fixes.

There's also a errno printk fix.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-05-06 14:51:24 -07:00
committed by Linus Torvalds
parent ccdddb5787
commit 5d86456d38
8 changed files with 63 additions and 84 deletions
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17
arch/um/os-Linux/skas/trap.c
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@@ -18,10 +18,9 @@
void sig_handler_common_skas(int sig, void *sc_ptr)
{
struct sigcontext *sc = sc_ptr;
struct skas_regs *r;
union uml_pt_regs *r;
void (*handler)(int, union uml_pt_regs *);
int save_errno = errno;
int save_user;
int save_user, save_errno = errno;
/* This is done because to allow SIGSEGV to be delivered inside a SEGV
* handler. This can happen in copy_user, and if SEGV is disabled,
@@ -31,13 +30,13 @@ void sig_handler_common_skas(int sig, void *sc_ptr)
if(sig == SIGSEGV)
change_sig(SIGSEGV, 1);
r = &TASK_REGS(get_current())->skas;
save_user = r->is_user;
r->is_user = 0;
r = TASK_REGS(get_current());
save_user = r->skas.is_user;
r->skas.is_user = 0;
if ( sig == SIGFPE || sig == SIGSEGV ||
sig == SIGBUS || sig == SIGILL ||
sig == SIGTRAP ) {
GET_FAULTINFO_FROM_SC(r->faultinfo, sc);
GET_FAULTINFO_FROM_SC(r->skas.faultinfo, sc);
}
change_sig(SIGUSR1, 1);
@@ -49,10 +48,10 @@ void sig_handler_common_skas(int sig, void *sc_ptr)
sig != SIGVTALRM && sig != SIGALRM)
unblock_signals();
handler(sig, (union uml_pt_regs *) r);
handler(sig, r);
errno = save_errno;
r->is_user = save_user;
r->skas.is_user = save_user;
}
extern int ptrace_faultinfo;