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kernel_optimize_test/arch/ia64/include/asm/ptrace.h

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Copyright (C) 1998-2004 Hewlett-Packard Co
* David Mosberger-Tang <davidm@hpl.hp.com>
* Stephane Eranian <eranian@hpl.hp.com>
* Copyright (C) 2003 Intel Co
* Suresh Siddha <suresh.b.siddha@intel.com>
* Fenghua Yu <fenghua.yu@intel.com>
* Arun Sharma <arun.sharma@intel.com>
*
* 12/07/98 S. Eranian added pt_regs & switch_stack
* 12/21/98 D. Mosberger updated to match latest code
* 6/17/99 D. Mosberger added second unat member to "struct switch_stack"
*
*/
UAPI: (Scripted) Disintegrate arch/ia64/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-09 16:47:00 +08:00
#ifndef _ASM_IA64_PTRACE_H
#define _ASM_IA64_PTRACE_H
[PATCH] Fix 'make headers_check' on ia64 On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-ia64/ptrace.h requires asm/asm-offsets.h, which does not exist > asm-ia64/resource.h requires asm/ustack.h, which does not exist Hide parts which shouldn't be visible to userspace. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-17 03:15:47 +08:00
[IA64] fix circular dependency on generation of asm-offsets.h Fix? One ugly hack is replaced by a different ugly hack. Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-09-13 23:50:39 +08:00
#ifndef ASM_OFFSETS_C
kbuild: m68k,parisc,ppc,ppc64,s390,xtensa use generic asm-offsets.h support Delete obsoleted parts form arch makefiles and rename to asm-offsets.h Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
2005-09-10 02:57:26 +08:00
#include <asm/asm-offsets.h>
[IA64] fix circular dependency on generation of asm-offsets.h Fix? One ugly hack is replaced by a different ugly hack. Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-09-13 23:50:39 +08:00
#endif
UAPI: (Scripted) Disintegrate arch/ia64/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-09 16:47:00 +08:00
#include <uapi/asm/ptrace.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* Base-2 logarithm of number of pages to allocate per task structure
* (including register backing store and memory stack):
*/
#if defined(CONFIG_IA64_PAGE_SIZE_4KB)
# define KERNEL_STACK_SIZE_ORDER 3
#elif defined(CONFIG_IA64_PAGE_SIZE_8KB)
# define KERNEL_STACK_SIZE_ORDER 2
#elif defined(CONFIG_IA64_PAGE_SIZE_16KB)
# define KERNEL_STACK_SIZE_ORDER 1
#else
# define KERNEL_STACK_SIZE_ORDER 0
#endif
[IA64] Workaround for RSE issue Problem: An application violating the architectural rules regarding operation dependencies and having specific Register Stack Engine (RSE) state at the time of the violation, may result in an illegal operation fault and invalid RSE state. Such faults may initiate a cascade of repeated illegal operation faults within OS interruption handlers. The specific behavior is OS dependent. Implication: An application causing an illegal operation fault with specific RSE state may result in a series of illegal operation faults and an eventual OS stack overflow condition. Workaround: OS interruption handlers that switch to kernel backing store implement a check for invalid RSE state to avoid the series of illegal operation faults. The core of the workaround is the RSE_WORKAROUND code sequence inserted into each invocation of the SAVE_MIN_WITH_COVER and SAVE_MIN_WITH_COVER_R19 macros. This sequence includes hard-coded constants that depend on the number of stacked physical registers being 96. The rest of this patch consists of code to disable this workaround should this not be the case (with the presumption that if a future Itanium processor increases the number of registers, it would also remove the need for this patch). Move the start of the RBS up to a mod32 boundary to avoid some corner cases. The dispatch_illegal_op_fault code outgrew the spot it was squatting in when built with this patch and CONFIG_VIRT_CPU_ACCOUNTING=y Move it out to the end of the ivt. Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-05-28 04:23:16 +08:00
#define IA64_RBS_OFFSET ((IA64_TASK_SIZE + IA64_THREAD_INFO_SIZE + 31) & ~31)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#define IA64_STK_OFFSET ((1 << KERNEL_STACK_SIZE_ORDER)*PAGE_SIZE)
#define KERNEL_STACK_SIZE IA64_STK_OFFSET
[PATCH] Fix 'make headers_check' on ia64 On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-ia64/ptrace.h requires asm/asm-offsets.h, which does not exist > asm-ia64/resource.h requires asm/ustack.h, which does not exist Hide parts which shouldn't be visible to userspace. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-17 03:15:47 +08:00
#ifndef __ASSEMBLY__
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
[PATCH] Fix 'make headers_check' on ia64 On Tue, 2006-09-12 at 17:44 +0100, David Woodhouse wrote: > asm-ia64/ptrace.h requires asm/asm-offsets.h, which does not exist > asm-ia64/resource.h requires asm/ustack.h, which does not exist Hide parts which shouldn't be visible to userspace. Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-17 03:15:47 +08:00
#include <asm/current.h>
#include <asm/page.h>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/*
* We use the ia64_psr(regs)->ri to determine which of the three
* instructions in bundle (16 bytes) took the sample. Generate
* the canonical representation by adding to instruction pointer.
*/
# define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri)
[PATCH] Add regs_return_value() helper Add the regs_return_value() macro to extract the return value in an architecture agnostic manner, given the pt_regs. Other architecture maintainers may want to add similar helpers. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02 17:17:31 +08:00
[IA64] utrace syscall.h support for ia64 Add asm/syscall.h for IA64. Utrace requires this. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-09-18 15:49:14 +08:00
static inline unsigned long user_stack_pointer(struct pt_regs *regs)
{
/* FIXME: should this be bspstore + nr_dirty regs? */
return regs->ar_bspstore;
}
Audit: push audit success and retcode into arch ptrace.h The audit system previously expected arches calling to audit_syscall_exit to supply as arguments if the syscall was a success and what the return code was. Audit also provides a helper AUDITSC_RESULT which was supposed to simplify things by converting from negative retcodes to an audit internal magic value stating success or failure. This helper was wrong and could indicate that a valid pointer returned to userspace was a failed syscall. The fix is to fix the layering foolishness. We now pass audit_syscall_exit a struct pt_reg and it in turns calls back into arch code to collect the return value and to determine if the syscall was a success or failure. We also define a generic is_syscall_success() macro which determines success/failure based on if the value is < -MAX_ERRNO. This works for arches like x86 which do not use a separate mechanism to indicate syscall failure. We make both the is_syscall_success() and regs_return_value() static inlines instead of macros. The reason is because the audit function must take a void* for the regs. (uml calls theirs struct uml_pt_regs instead of just struct pt_regs so audit_syscall_exit can't take a struct pt_regs). Since the audit function takes a void* we need to use static inlines to cast it back to the arch correct structure to dereference it. The other major change is that on some arches, like ia64, MIPS and ppc, we change regs_return_value() to give us the negative value on syscall failure. THE only other user of this macro, kretprobe_example.c, won't notice and it makes the value signed consistently for the audit functions across all archs. In arch/sh/kernel/ptrace_64.c I see that we were using regs[9] in the old audit code as the return value. But the ptrace_64.h code defined the macro regs_return_value() as regs[3]. I have no idea which one is correct, but this patch now uses the regs_return_value() function, so it now uses regs[3]. For powerpc we previously used regs->result but now use the regs_return_value() function which uses regs->gprs[3]. regs->gprs[3] is always positive so the regs_return_value(), much like ia64 makes it negative before calling the audit code when appropriate. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: H. Peter Anvin <hpa@zytor.com> [for x86 portion] Acked-by: Tony Luck <tony.luck@intel.com> [for ia64] Acked-by: Richard Weinberger <richard@nod.at> [for uml] Acked-by: David S. Miller <davem@davemloft.net> [for sparc] Acked-by: Ralf Baechle <ralf@linux-mips.org> [for mips] Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [for ppc]
2012-01-04 03:23:06 +08:00
static inline int is_syscall_success(struct pt_regs *regs)
{
return regs->r10 != -1;
}
static inline long regs_return_value(struct pt_regs *regs)
{
if (is_syscall_success(regs))
return regs->r8;
else
return -regs->r8;
}
[PATCH] Add regs_return_value() helper Add the regs_return_value() macro to extract the return value in an architecture agnostic manner, given the pt_regs. Other architecture maintainers may want to add similar helpers. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-02 17:17:31 +08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Conserve space in histogram by encoding slot bits in address
* bits 2 and 3 rather than bits 0 and 1.
*/
#define profile_pc(regs) \
({ \
unsigned long __ip = instruction_pointer(regs); \
(__ip & ~3UL) + ((__ip & 3UL) << 2); \
})
/* given a pointer to a task_struct, return the user's pt_regs */
[PATCH] ia64: task_pt_regs() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12 17:06:06 +08:00
# define task_pt_regs(t) (((struct pt_regs *) ((char *) (t) + IA64_STK_OFFSET)) - 1)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
# define ia64_psr(regs) ((struct ia64_psr *) &(regs)->cr_ipsr)
# define user_mode(regs) (((struct ia64_psr *) &(regs)->cr_ipsr)->cpl != 0)
# define user_stack(task,regs) ((long) regs - (long) task == IA64_STK_OFFSET - sizeof(*regs))
# define fsys_mode(task,regs) \
({ \
struct task_struct *_task = (task); \
struct pt_regs *_regs = (regs); \
!user_mode(_regs) && user_stack(_task, _regs); \
})
/*
* System call handlers that, upon successful completion, need to return a negative value
* should call force_successful_syscall_return() right before returning. On architectures
* where the syscall convention provides for a separate error flag (e.g., alpha, ia64,
* ppc{,64}, sparc{,64}, possibly others), this macro can be used to ensure that the error
* flag will not get set. On architectures which do not support a separate error flag,
* the macro is a no-op and the spurious error condition needs to be filtered out by some
* other means (e.g., in user-level, by passing an extra argument to the syscall handler,
* or something along those lines).
*
* On ia64, we can clear the user's pt_regs->r8 to force a successful syscall.
*/
[PATCH] ia64: task_pt_regs() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12 17:06:06 +08:00
# define force_successful_syscall_return() (task_pt_regs(current)->r8 = 0)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct task_struct; /* forward decl */
struct unw_frame_info; /* forward decl */
extern void ia64_do_show_stack (struct unw_frame_info *, void *);
extern unsigned long ia64_get_user_rbs_end (struct task_struct *, struct pt_regs *,
unsigned long *);
extern long ia64_peek (struct task_struct *, struct switch_stack *, unsigned long,
unsigned long, long *);
extern long ia64_poke (struct task_struct *, struct switch_stack *, unsigned long,
unsigned long, long);
extern void ia64_flush_fph (struct task_struct *);
extern void ia64_sync_fph (struct task_struct *);
[IA64] Synchronize kernel RSE to user-space and back This is base kernel patch for ptrace RSE bug. It's basically a backport from the utrace RSE patch I sent out several weeks ago. please review. when a thread is stopped (ptraced), debugger might change thread's user stack (change memory directly), and we must avoid the RSE stored in kernel to override user stack (user space's RSE is newer than kernel's in the case). To workaround the issue, we copy kernel RSE to user RSE before the task is stopped, so user RSE has updated data. we then copy user RSE to kernel after the task is resummed from traced stop and kernel will use the newer RSE to return to user. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Petr Tesarik <ptesarik@suse.cz> CC: Roland McGrath <roland@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-12-12 22:23:34 +08:00
extern void ia64_sync_krbs(void);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
extern long ia64_sync_user_rbs (struct task_struct *, struct switch_stack *,
unsigned long, unsigned long);
/* get nat bits for scratch registers such that bit N==1 iff scratch register rN is a NaT */
extern unsigned long ia64_get_scratch_nat_bits (struct pt_regs *pt, unsigned long scratch_unat);
/* put nat bits for scratch registers such that scratch register rN is a NaT iff bit N==1 */
extern unsigned long ia64_put_scratch_nat_bits (struct pt_regs *pt, unsigned long nat);
extern void ia64_increment_ip (struct pt_regs *pt);
extern void ia64_decrement_ip (struct pt_regs *pt);
[IA64] Synchronize kernel RSE to user-space and back This is base kernel patch for ptrace RSE bug. It's basically a backport from the utrace RSE patch I sent out several weeks ago. please review. when a thread is stopped (ptraced), debugger might change thread's user stack (change memory directly), and we must avoid the RSE stored in kernel to override user stack (user space's RSE is newer than kernel's in the case). To workaround the issue, we copy kernel RSE to user RSE before the task is stopped, so user RSE has updated data. we then copy user RSE to kernel after the task is resummed from traced stop and kernel will use the newer RSE to return to user. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Petr Tesarik <ptesarik@suse.cz> CC: Roland McGrath <roland@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-12-12 22:23:34 +08:00
extern void ia64_ptrace_stop(void);
#define arch_ptrace_stop(code, info) \
ia64_ptrace_stop()
#define arch_ptrace_stop_needed(code, info) \
(!test_thread_flag(TIF_RESTORE_RSE))
[IA64] Synchronize RBS on PTRACE_ATTACH When attaching to a stopped process, the RSE must be explicitly synced to user-space, so the debugger can read the correct values. Signed-off-by: Petr Tesarik <ptesarik@suse.cz> CC: Roland McGrath <roland@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2007-12-12 22:24:25 +08:00
extern void ptrace_attach_sync_user_rbs (struct task_struct *);
#define arch_ptrace_attach(child) \
ptrace_attach_sync_user_rbs(child)
[IA64] remove duplicate code from arch_ptrace() Remove all code which does exactly the same thing as ptrace_request(). Signed-off-by: Petr Tesarik <ptesarik@suse.cz> Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-02-12 05:43:38 +08:00
#define arch_has_single_step() (1)
#define arch_has_block_step() (1)
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_IA64_PTRACE_H */
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