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android_kernel_motorola_sm6225/arch/ia64/kernel/asm-offsets.c
Pavel Emelyanov 96ded9dadd [IA64] fix getpid and set_tid_address fast system calls for pid namespaces 
The sys_getpid() and sys_set_tid_address() behavior changed from

	return current->tgid

to

	struct pid *pid;
	pid = current->pids[PIDTYPE_PID].pid;
	return pid->numbers[pid->level].nr;

But the fast system calls on ia64 still operate the old way.  Patch them
appropriately to let ia64 work with pid namespaces.  Besides, this is one more
step in deprecating of pid and tgid on task_struct.

The fsys_getppid() is to be patched as well, but its logic is much
more complex now, so I will make it later.

One thing I'm not 100% sure is the trick with the IA64_UPID_SHIFT.  On order
to access the pid->level's element of an array I have to perform the following
calculations

	pid + sizeof(struct upid) * pid->level

The problem is that ia64 can only multiply float point registers, while all
the offsets I have in code are in rXX ones.  Fortunately, the sizeof(struct
upid) is 32 bytes on ia64 (and is very unlikely to ever change), so the
calculations get simpler:

	pid + pid->level << 5

So, I introduce the IA64_UPID_SHIFT and use the shl instruction.  I also
looked at how gcc compiles the similar place and found that it makes it with
shift as well.  Is this OK to do so?

Tested with ski emulator with 2.6.24 kernel, but fits 2.6.25-rc4 and
2.6.25-rc4-mm1 as well.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: David Mosberger-Tang <davidm@hpl.hp.com>
Cc: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Amy Griffis <amy.griffis@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-04-09 10:33:36 -07:00

288 lines
14 KiB
C
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/*
* Generate definitions needed by assembly language modules.
* This code generates raw asm output which is post-processed
* to extract and format the required data.
*/
#define ASM_OFFSETS_C 1
#include <linux/sched.h>
#include <linux/pid.h>
#include <linux/clocksource.h>
#include <asm-ia64/processor.h>
#include <asm-ia64/ptrace.h>
#include <asm-ia64/siginfo.h>
#include <asm-ia64/sigcontext.h>
#include <asm-ia64/mca.h>
#include "../kernel/sigframe.h"
#include "../kernel/fsyscall_gtod_data.h"
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
#define BLANK() asm volatile("\n->" : : )
void foo(void)
{
DEFINE(IA64_TASK_SIZE, sizeof (struct task_struct));
DEFINE(IA64_THREAD_INFO_SIZE, sizeof (struct thread_info));
DEFINE(IA64_PT_REGS_SIZE, sizeof (struct pt_regs));
DEFINE(IA64_SWITCH_STACK_SIZE, sizeof (struct switch_stack));
DEFINE(IA64_SIGINFO_SIZE, sizeof (struct siginfo));
DEFINE(IA64_CPU_SIZE, sizeof (struct cpuinfo_ia64));
DEFINE(SIGFRAME_SIZE, sizeof (struct sigframe));
DEFINE(UNW_FRAME_INFO_SIZE, sizeof (struct unw_frame_info));
BUILD_BUG_ON(sizeof(struct upid) != 32);
DEFINE(IA64_UPID_SHIFT, 5);
BLANK();
DEFINE(TI_FLAGS, offsetof(struct thread_info, flags));
DEFINE(TI_CPU, offsetof(struct thread_info, cpu));
DEFINE(TI_PRE_COUNT, offsetof(struct thread_info, preempt_count));
BLANK();
DEFINE(IA64_TASK_BLOCKED_OFFSET,offsetof (struct task_struct, blocked));
DEFINE(IA64_TASK_CLEAR_CHILD_TID_OFFSET,offsetof (struct task_struct, clear_child_tid));
DEFINE(IA64_TASK_GROUP_LEADER_OFFSET, offsetof (struct task_struct, group_leader));
DEFINE(IA64_TASK_TGIDLINK_OFFSET, offsetof (struct task_struct, pids[PIDTYPE_PID].pid));
DEFINE(IA64_PID_LEVEL_OFFSET, offsetof (struct pid, level));
DEFINE(IA64_PID_UPID_OFFSET, offsetof (struct pid, numbers[0]));
DEFINE(IA64_TASK_PENDING_OFFSET,offsetof (struct task_struct, pending));
DEFINE(IA64_TASK_PID_OFFSET, offsetof (struct task_struct, pid));
DEFINE(IA64_TASK_REAL_PARENT_OFFSET, offsetof (struct task_struct, real_parent));
DEFINE(IA64_TASK_SIGHAND_OFFSET,offsetof (struct task_struct, sighand));
DEFINE(IA64_TASK_SIGNAL_OFFSET,offsetof (struct task_struct, signal));
DEFINE(IA64_TASK_TGID_OFFSET, offsetof (struct task_struct, tgid));
DEFINE(IA64_TASK_THREAD_KSP_OFFSET, offsetof (struct task_struct, thread.ksp));
DEFINE(IA64_TASK_THREAD_ON_USTACK_OFFSET, offsetof (struct task_struct, thread.on_ustack));
BLANK();
DEFINE(IA64_SIGHAND_SIGLOCK_OFFSET,offsetof (struct sighand_struct, siglock));
BLANK();
DEFINE(IA64_SIGNAL_GROUP_STOP_COUNT_OFFSET,offsetof (struct signal_struct,
group_stop_count));
DEFINE(IA64_SIGNAL_SHARED_PENDING_OFFSET,offsetof (struct signal_struct, shared_pending));
BLANK();
DEFINE(IA64_PT_REGS_B6_OFFSET, offsetof (struct pt_regs, b6));
DEFINE(IA64_PT_REGS_B7_OFFSET, offsetof (struct pt_regs, b7));
DEFINE(IA64_PT_REGS_AR_CSD_OFFSET, offsetof (struct pt_regs, ar_csd));
DEFINE(IA64_PT_REGS_AR_SSD_OFFSET, offsetof (struct pt_regs, ar_ssd));
DEFINE(IA64_PT_REGS_R8_OFFSET, offsetof (struct pt_regs, r8));
DEFINE(IA64_PT_REGS_R9_OFFSET, offsetof (struct pt_regs, r9));
DEFINE(IA64_PT_REGS_R10_OFFSET, offsetof (struct pt_regs, r10));
DEFINE(IA64_PT_REGS_R11_OFFSET, offsetof (struct pt_regs, r11));
DEFINE(IA64_PT_REGS_CR_IPSR_OFFSET, offsetof (struct pt_regs, cr_ipsr));
DEFINE(IA64_PT_REGS_CR_IIP_OFFSET, offsetof (struct pt_regs, cr_iip));
DEFINE(IA64_PT_REGS_CR_IFS_OFFSET, offsetof (struct pt_regs, cr_ifs));
DEFINE(IA64_PT_REGS_AR_UNAT_OFFSET, offsetof (struct pt_regs, ar_unat));
DEFINE(IA64_PT_REGS_AR_PFS_OFFSET, offsetof (struct pt_regs, ar_pfs));
DEFINE(IA64_PT_REGS_AR_RSC_OFFSET, offsetof (struct pt_regs, ar_rsc));
DEFINE(IA64_PT_REGS_AR_RNAT_OFFSET, offsetof (struct pt_regs, ar_rnat));
DEFINE(IA64_PT_REGS_AR_BSPSTORE_OFFSET, offsetof (struct pt_regs, ar_bspstore));
DEFINE(IA64_PT_REGS_PR_OFFSET, offsetof (struct pt_regs, pr));
DEFINE(IA64_PT_REGS_B0_OFFSET, offsetof (struct pt_regs, b0));
DEFINE(IA64_PT_REGS_LOADRS_OFFSET, offsetof (struct pt_regs, loadrs));
DEFINE(IA64_PT_REGS_R1_OFFSET, offsetof (struct pt_regs, r1));
DEFINE(IA64_PT_REGS_R12_OFFSET, offsetof (struct pt_regs, r12));
DEFINE(IA64_PT_REGS_R13_OFFSET, offsetof (struct pt_regs, r13));
DEFINE(IA64_PT_REGS_AR_FPSR_OFFSET, offsetof (struct pt_regs, ar_fpsr));
DEFINE(IA64_PT_REGS_R15_OFFSET, offsetof (struct pt_regs, r15));
DEFINE(IA64_PT_REGS_R14_OFFSET, offsetof (struct pt_regs, r14));
DEFINE(IA64_PT_REGS_R2_OFFSET, offsetof (struct pt_regs, r2));
DEFINE(IA64_PT_REGS_R3_OFFSET, offsetof (struct pt_regs, r3));
DEFINE(IA64_PT_REGS_R16_OFFSET, offsetof (struct pt_regs, r16));
DEFINE(IA64_PT_REGS_R17_OFFSET, offsetof (struct pt_regs, r17));
DEFINE(IA64_PT_REGS_R18_OFFSET, offsetof (struct pt_regs, r18));
DEFINE(IA64_PT_REGS_R19_OFFSET, offsetof (struct pt_regs, r19));
DEFINE(IA64_PT_REGS_R20_OFFSET, offsetof (struct pt_regs, r20));
DEFINE(IA64_PT_REGS_R21_OFFSET, offsetof (struct pt_regs, r21));
DEFINE(IA64_PT_REGS_R22_OFFSET, offsetof (struct pt_regs, r22));
DEFINE(IA64_PT_REGS_R23_OFFSET, offsetof (struct pt_regs, r23));
DEFINE(IA64_PT_REGS_R24_OFFSET, offsetof (struct pt_regs, r24));
DEFINE(IA64_PT_REGS_R25_OFFSET, offsetof (struct pt_regs, r25));
DEFINE(IA64_PT_REGS_R26_OFFSET, offsetof (struct pt_regs, r26));
DEFINE(IA64_PT_REGS_R27_OFFSET, offsetof (struct pt_regs, r27));
DEFINE(IA64_PT_REGS_R28_OFFSET, offsetof (struct pt_regs, r28));
DEFINE(IA64_PT_REGS_R29_OFFSET, offsetof (struct pt_regs, r29));
DEFINE(IA64_PT_REGS_R30_OFFSET, offsetof (struct pt_regs, r30));
DEFINE(IA64_PT_REGS_R31_OFFSET, offsetof (struct pt_regs, r31));
DEFINE(IA64_PT_REGS_AR_CCV_OFFSET, offsetof (struct pt_regs, ar_ccv));
DEFINE(IA64_PT_REGS_F6_OFFSET, offsetof (struct pt_regs, f6));
DEFINE(IA64_PT_REGS_F7_OFFSET, offsetof (struct pt_regs, f7));
DEFINE(IA64_PT_REGS_F8_OFFSET, offsetof (struct pt_regs, f8));
DEFINE(IA64_PT_REGS_F9_OFFSET, offsetof (struct pt_regs, f9));
DEFINE(IA64_PT_REGS_F10_OFFSET, offsetof (struct pt_regs, f10));
DEFINE(IA64_PT_REGS_F11_OFFSET, offsetof (struct pt_regs, f11));
BLANK();
DEFINE(IA64_SWITCH_STACK_CALLER_UNAT_OFFSET, offsetof (struct switch_stack, caller_unat));
DEFINE(IA64_SWITCH_STACK_AR_FPSR_OFFSET, offsetof (struct switch_stack, ar_fpsr));
DEFINE(IA64_SWITCH_STACK_F2_OFFSET, offsetof (struct switch_stack, f2));
DEFINE(IA64_SWITCH_STACK_F3_OFFSET, offsetof (struct switch_stack, f3));
DEFINE(IA64_SWITCH_STACK_F4_OFFSET, offsetof (struct switch_stack, f4));
DEFINE(IA64_SWITCH_STACK_F5_OFFSET, offsetof (struct switch_stack, f5));
DEFINE(IA64_SWITCH_STACK_F12_OFFSET, offsetof (struct switch_stack, f12));
DEFINE(IA64_SWITCH_STACK_F13_OFFSET, offsetof (struct switch_stack, f13));
DEFINE(IA64_SWITCH_STACK_F14_OFFSET, offsetof (struct switch_stack, f14));
DEFINE(IA64_SWITCH_STACK_F15_OFFSET, offsetof (struct switch_stack, f15));
DEFINE(IA64_SWITCH_STACK_F16_OFFSET, offsetof (struct switch_stack, f16));
DEFINE(IA64_SWITCH_STACK_F17_OFFSET, offsetof (struct switch_stack, f17));
DEFINE(IA64_SWITCH_STACK_F18_OFFSET, offsetof (struct switch_stack, f18));
DEFINE(IA64_SWITCH_STACK_F19_OFFSET, offsetof (struct switch_stack, f19));
DEFINE(IA64_SWITCH_STACK_F20_OFFSET, offsetof (struct switch_stack, f20));
DEFINE(IA64_SWITCH_STACK_F21_OFFSET, offsetof (struct switch_stack, f21));
DEFINE(IA64_SWITCH_STACK_F22_OFFSET, offsetof (struct switch_stack, f22));
DEFINE(IA64_SWITCH_STACK_F23_OFFSET, offsetof (struct switch_stack, f23));
DEFINE(IA64_SWITCH_STACK_F24_OFFSET, offsetof (struct switch_stack, f24));
DEFINE(IA64_SWITCH_STACK_F25_OFFSET, offsetof (struct switch_stack, f25));
DEFINE(IA64_SWITCH_STACK_F26_OFFSET, offsetof (struct switch_stack, f26));
DEFINE(IA64_SWITCH_STACK_F27_OFFSET, offsetof (struct switch_stack, f27));
DEFINE(IA64_SWITCH_STACK_F28_OFFSET, offsetof (struct switch_stack, f28));
DEFINE(IA64_SWITCH_STACK_F29_OFFSET, offsetof (struct switch_stack, f29));
DEFINE(IA64_SWITCH_STACK_F30_OFFSET, offsetof (struct switch_stack, f30));
DEFINE(IA64_SWITCH_STACK_F31_OFFSET, offsetof (struct switch_stack, f31));
DEFINE(IA64_SWITCH_STACK_R4_OFFSET, offsetof (struct switch_stack, r4));
DEFINE(IA64_SWITCH_STACK_R5_OFFSET, offsetof (struct switch_stack, r5));
DEFINE(IA64_SWITCH_STACK_R6_OFFSET, offsetof (struct switch_stack, r6));
DEFINE(IA64_SWITCH_STACK_R7_OFFSET, offsetof (struct switch_stack, r7));
DEFINE(IA64_SWITCH_STACK_B0_OFFSET, offsetof (struct switch_stack, b0));
DEFINE(IA64_SWITCH_STACK_B1_OFFSET, offsetof (struct switch_stack, b1));
DEFINE(IA64_SWITCH_STACK_B2_OFFSET, offsetof (struct switch_stack, b2));
DEFINE(IA64_SWITCH_STACK_B3_OFFSET, offsetof (struct switch_stack, b3));
DEFINE(IA64_SWITCH_STACK_B4_OFFSET, offsetof (struct switch_stack, b4));
DEFINE(IA64_SWITCH_STACK_B5_OFFSET, offsetof (struct switch_stack, b5));
DEFINE(IA64_SWITCH_STACK_AR_PFS_OFFSET, offsetof (struct switch_stack, ar_pfs));
DEFINE(IA64_SWITCH_STACK_AR_LC_OFFSET, offsetof (struct switch_stack, ar_lc));
DEFINE(IA64_SWITCH_STACK_AR_UNAT_OFFSET, offsetof (struct switch_stack, ar_unat));
DEFINE(IA64_SWITCH_STACK_AR_RNAT_OFFSET, offsetof (struct switch_stack, ar_rnat));
DEFINE(IA64_SWITCH_STACK_AR_BSPSTORE_OFFSET, offsetof (struct switch_stack, ar_bspstore));
DEFINE(IA64_SWITCH_STACK_PR_OFFSET, offsetof (struct switch_stack, pr));
BLANK();
DEFINE(IA64_SIGCONTEXT_IP_OFFSET, offsetof (struct sigcontext, sc_ip));
DEFINE(IA64_SIGCONTEXT_AR_BSP_OFFSET, offsetof (struct sigcontext, sc_ar_bsp));
DEFINE(IA64_SIGCONTEXT_AR_FPSR_OFFSET, offsetof (struct sigcontext, sc_ar_fpsr));
DEFINE(IA64_SIGCONTEXT_AR_RNAT_OFFSET, offsetof (struct sigcontext, sc_ar_rnat));
DEFINE(IA64_SIGCONTEXT_AR_UNAT_OFFSET, offsetof (struct sigcontext, sc_ar_unat));
DEFINE(IA64_SIGCONTEXT_B0_OFFSET, offsetof (struct sigcontext, sc_br[0]));
DEFINE(IA64_SIGCONTEXT_CFM_OFFSET, offsetof (struct sigcontext, sc_cfm));
DEFINE(IA64_SIGCONTEXT_FLAGS_OFFSET, offsetof (struct sigcontext, sc_flags));
DEFINE(IA64_SIGCONTEXT_FR6_OFFSET, offsetof (struct sigcontext, sc_fr[6]));
DEFINE(IA64_SIGCONTEXT_PR_OFFSET, offsetof (struct sigcontext, sc_pr));
DEFINE(IA64_SIGCONTEXT_R12_OFFSET, offsetof (struct sigcontext, sc_gr[12]));
DEFINE(IA64_SIGCONTEXT_RBS_BASE_OFFSET,offsetof (struct sigcontext, sc_rbs_base));
DEFINE(IA64_SIGCONTEXT_LOADRS_OFFSET, offsetof (struct sigcontext, sc_loadrs));
BLANK();
DEFINE(IA64_SIGPENDING_SIGNAL_OFFSET, offsetof (struct sigpending, signal));
BLANK();
DEFINE(IA64_SIGFRAME_ARG0_OFFSET, offsetof (struct sigframe, arg0));
DEFINE(IA64_SIGFRAME_ARG1_OFFSET, offsetof (struct sigframe, arg1));
DEFINE(IA64_SIGFRAME_ARG2_OFFSET, offsetof (struct sigframe, arg2));
DEFINE(IA64_SIGFRAME_HANDLER_OFFSET, offsetof (struct sigframe, handler));
DEFINE(IA64_SIGFRAME_SIGCONTEXT_OFFSET, offsetof (struct sigframe, sc));
BLANK();
/* for assembly files which can't include sched.h: */
DEFINE(IA64_CLONE_VFORK, CLONE_VFORK);
DEFINE(IA64_CLONE_VM, CLONE_VM);
BLANK();
DEFINE(IA64_CPUINFO_NSEC_PER_CYC_OFFSET,
offsetof (struct cpuinfo_ia64, nsec_per_cyc));
DEFINE(IA64_CPUINFO_PTCE_BASE_OFFSET,
offsetof (struct cpuinfo_ia64, ptce_base));
DEFINE(IA64_CPUINFO_PTCE_COUNT_OFFSET,
offsetof (struct cpuinfo_ia64, ptce_count));
DEFINE(IA64_CPUINFO_PTCE_STRIDE_OFFSET,
offsetof (struct cpuinfo_ia64, ptce_stride));
BLANK();
DEFINE(IA64_TIMESPEC_TV_NSEC_OFFSET,
offsetof (struct timespec, tv_nsec));
DEFINE(CLONE_SETTLS_BIT, 19);
#if CLONE_SETTLS != (1<<19)
# error "CLONE_SETTLS_BIT incorrect, please fix"
#endif
BLANK();
DEFINE(IA64_MCA_CPU_MCA_STACK_OFFSET,
offsetof (struct ia64_mca_cpu, mca_stack));
DEFINE(IA64_MCA_CPU_INIT_STACK_OFFSET,
offsetof (struct ia64_mca_cpu, init_stack));
BLANK();
DEFINE(IA64_SAL_OS_STATE_OS_GP_OFFSET,
offsetof (struct ia64_sal_os_state, os_gp));
DEFINE(IA64_SAL_OS_STATE_PROC_STATE_PARAM_OFFSET,
offsetof (struct ia64_sal_os_state, proc_state_param));
DEFINE(IA64_SAL_OS_STATE_SAL_RA_OFFSET,
offsetof (struct ia64_sal_os_state, sal_ra));
DEFINE(IA64_SAL_OS_STATE_SAL_GP_OFFSET,
offsetof (struct ia64_sal_os_state, sal_gp));
DEFINE(IA64_SAL_OS_STATE_PAL_MIN_STATE_OFFSET,
offsetof (struct ia64_sal_os_state, pal_min_state));
DEFINE(IA64_SAL_OS_STATE_OS_STATUS_OFFSET,
offsetof (struct ia64_sal_os_state, os_status));
DEFINE(IA64_SAL_OS_STATE_CONTEXT_OFFSET,
offsetof (struct ia64_sal_os_state, context));
DEFINE(IA64_SAL_OS_STATE_SIZE,
sizeof (struct ia64_sal_os_state));
BLANK();
DEFINE(IA64_PMSA_GR_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_gr));
DEFINE(IA64_PMSA_BANK1_GR_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_bank1_gr));
DEFINE(IA64_PMSA_PR_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_pr));
DEFINE(IA64_PMSA_BR0_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_br0));
DEFINE(IA64_PMSA_RSC_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_rsc));
DEFINE(IA64_PMSA_IIP_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_iip));
DEFINE(IA64_PMSA_IPSR_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_ipsr));
DEFINE(IA64_PMSA_IFS_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_ifs));
DEFINE(IA64_PMSA_XIP_OFFSET,
offsetof (struct pal_min_state_area_s, pmsa_xip));
BLANK();
/* used by fsys_gettimeofday in arch/ia64/kernel/fsys.S */
DEFINE(IA64_GTOD_LOCK_OFFSET,
offsetof (struct fsyscall_gtod_data_t, lock));
DEFINE(IA64_GTOD_WALL_TIME_OFFSET,
offsetof (struct fsyscall_gtod_data_t, wall_time));
DEFINE(IA64_GTOD_MONO_TIME_OFFSET,
offsetof (struct fsyscall_gtod_data_t, monotonic_time));
DEFINE(IA64_CLKSRC_MASK_OFFSET,
offsetof (struct fsyscall_gtod_data_t, clk_mask));
DEFINE(IA64_CLKSRC_MULT_OFFSET,
offsetof (struct fsyscall_gtod_data_t, clk_mult));
DEFINE(IA64_CLKSRC_SHIFT_OFFSET,
offsetof (struct fsyscall_gtod_data_t, clk_shift));
DEFINE(IA64_CLKSRC_MMIO_OFFSET,
offsetof (struct fsyscall_gtod_data_t, clk_fsys_mmio));
DEFINE(IA64_CLKSRC_CYCLE_LAST_OFFSET,
offsetof (struct fsyscall_gtod_data_t, clk_cycle_last));
DEFINE(IA64_ITC_JITTER_OFFSET,
offsetof (struct itc_jitter_data_t, itc_jitter));
DEFINE(IA64_ITC_LASTCYCLE_OFFSET,
offsetof (struct itc_jitter_data_t, itc_lastcycle));
}
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