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Blackfin: add support for common FDPIC ptrace requests

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The FDPIC arches support a standard set of ptrace requests so rather than
define our own custom API, hook up those requests for common code to
leverage.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2009-07-03 00:17:45 +00:00
parent 81c969a8bc
commit 53e18df745
1 changed files with 24 additions and 2 deletions
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26
arch/blackfin/kernel/ptrace.c
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@ -285,9 +285,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
tmp = child->mm->start_data;
#ifdef CONFIG_BINFMT_ELF_FDPIC
} else if (addr == (sizeof(struct pt_regs) + 12)) {
tmp = child->mm->context.exec_fdpic_loadmap;
goto case_PTRACE_GETFDPIC_EXEC;
} else if (addr == (sizeof(struct pt_regs) + 16)) {
tmp = child->mm->context.interp_fdpic_loadmap;
goto case_PTRACE_GETFDPIC_INTERP;
#endif
} else {
tmp = get_reg(child, addr);
@ -296,6 +296,28 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
break;
}
#ifdef CONFIG_BINFMT_ELF_FDPIC
case PTRACE_GETFDPIC: {
unsigned long tmp = 0;
switch (addr) {
case_PTRACE_GETFDPIC_EXEC:
case PTRACE_GETFDPIC_EXEC:
tmp = child->mm->context.exec_fdpic_loadmap;
break;
case_PTRACE_GETFDPIC_INTERP:
case PTRACE_GETFDPIC_INTERP:
tmp = child->mm->context.interp_fdpic_loadmap;
break;
default:
break;
}
ret = put_user(tmp, datap);
break;
}
#endif
/* when I and D space are separate, this will have to be fixed. */
case PTRACE_POKEDATA:
pr_debug("ptrace: PTRACE_PEEKDATA\n");