248 lines
8 KiB
C
248 lines
8 KiB
C
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/*
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* Copyright (C) 1998-2004 Hewlett-Packard Co
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* David Mosberger-Tang <davidm@hpl.hp.com>
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* Stephane Eranian <eranian@hpl.hp.com>
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* Copyright (C) 2003 Intel Co
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* Suresh Siddha <suresh.b.siddha@intel.com>
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* Fenghua Yu <fenghua.yu@intel.com>
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* Arun Sharma <arun.sharma@intel.com>
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*
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* 12/07/98 S. Eranian added pt_regs & switch_stack
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* 12/21/98 D. Mosberger updated to match latest code
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* 6/17/99 D. Mosberger added second unat member to "struct switch_stack"
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*
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*/
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#ifndef _UAPI_ASM_IA64_PTRACE_H
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#define _UAPI_ASM_IA64_PTRACE_H
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/*
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* When a user process is blocked, its state looks as follows:
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*
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* +----------------------+ ------- IA64_STK_OFFSET
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* | | ^
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* | struct pt_regs | |
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* | | |
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* +----------------------+ |
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* | | |
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* | memory stack | |
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* | (growing downwards) | |
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* //.....................// |
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* |
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* //.....................// |
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* | | |
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* +----------------------+ |
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* | struct switch_stack | |
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* | | |
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* +----------------------+ |
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* | | |
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* //.....................// |
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* |
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* //.....................// |
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* | | |
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* | register stack | |
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* | (growing upwards) | |
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* | | |
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* +----------------------+ | --- IA64_RBS_OFFSET
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* | struct thread_info | | ^
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* +----------------------+ | |
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* | | | |
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* | struct task_struct | | |
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* current -> | | | |
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* +----------------------+ -------
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*
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* Note that ar.ec is not saved explicitly in pt_reg or switch_stack.
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* This is because ar.ec is saved as part of ar.pfs.
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*/
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#include <asm/fpu.h>
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#ifndef __ASSEMBLY__
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/*
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* This struct defines the way the registers are saved on system
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* calls.
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*
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* We don't save all floating point register because the kernel
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* is compiled to use only a very small subset, so the other are
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* untouched.
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*
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* THIS STRUCTURE MUST BE A MULTIPLE 16-BYTE IN SIZE
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* (because the memory stack pointer MUST ALWAYS be aligned this way)
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*
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*/
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struct pt_regs {
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/* The following registers are saved by SAVE_MIN: */
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unsigned long b6; /* scratch */
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unsigned long b7; /* scratch */
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unsigned long ar_csd; /* used by cmp8xchg16 (scratch) */
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unsigned long ar_ssd; /* reserved for future use (scratch) */
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unsigned long r8; /* scratch (return value register 0) */
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unsigned long r9; /* scratch (return value register 1) */
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unsigned long r10; /* scratch (return value register 2) */
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unsigned long r11; /* scratch (return value register 3) */
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unsigned long cr_ipsr; /* interrupted task's psr */
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unsigned long cr_iip; /* interrupted task's instruction pointer */
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/*
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* interrupted task's function state; if bit 63 is cleared, it
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* contains syscall's ar.pfs.pfm:
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*/
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unsigned long cr_ifs;
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unsigned long ar_unat; /* interrupted task's NaT register (preserved) */
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unsigned long ar_pfs; /* prev function state */
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unsigned long ar_rsc; /* RSE configuration */
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/* The following two are valid only if cr_ipsr.cpl > 0 || ti->flags & _TIF_MCA_INIT */
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unsigned long ar_rnat; /* RSE NaT */
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unsigned long ar_bspstore; /* RSE bspstore */
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unsigned long pr; /* 64 predicate registers (1 bit each) */
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unsigned long b0; /* return pointer (bp) */
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unsigned long loadrs; /* size of dirty partition << 16 */
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unsigned long r1; /* the gp pointer */
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unsigned long r12; /* interrupted task's memory stack pointer */
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unsigned long r13; /* thread pointer */
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unsigned long ar_fpsr; /* floating point status (preserved) */
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unsigned long r15; /* scratch */
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/* The remaining registers are NOT saved for system calls. */
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unsigned long r14; /* scratch */
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unsigned long r2; /* scratch */
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unsigned long r3; /* scratch */
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/* The following registers are saved by SAVE_REST: */
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unsigned long r16; /* scratch */
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unsigned long r17; /* scratch */
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unsigned long r18; /* scratch */
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unsigned long r19; /* scratch */
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unsigned long r20; /* scratch */
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unsigned long r21; /* scratch */
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unsigned long r22; /* scratch */
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unsigned long r23; /* scratch */
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unsigned long r24; /* scratch */
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unsigned long r25; /* scratch */
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unsigned long r26; /* scratch */
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unsigned long r27; /* scratch */
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unsigned long r28; /* scratch */
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unsigned long r29; /* scratch */
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unsigned long r30; /* scratch */
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unsigned long r31; /* scratch */
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unsigned long ar_ccv; /* compare/exchange value (scratch) */
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/*
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* Floating point registers that the kernel considers scratch:
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*/
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struct ia64_fpreg f6; /* scratch */
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struct ia64_fpreg f7; /* scratch */
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struct ia64_fpreg f8; /* scratch */
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struct ia64_fpreg f9; /* scratch */
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struct ia64_fpreg f10; /* scratch */
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struct ia64_fpreg f11; /* scratch */
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};
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/*
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* This structure contains the addition registers that need to
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* preserved across a context switch. This generally consists of
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* "preserved" registers.
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*/
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struct switch_stack {
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unsigned long caller_unat; /* user NaT collection register (preserved) */
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unsigned long ar_fpsr; /* floating-point status register */
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struct ia64_fpreg f2; /* preserved */
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struct ia64_fpreg f3; /* preserved */
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struct ia64_fpreg f4; /* preserved */
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struct ia64_fpreg f5; /* preserved */
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struct ia64_fpreg f12; /* scratch, but untouched by kernel */
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struct ia64_fpreg f13; /* scratch, but untouched by kernel */
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struct ia64_fpreg f14; /* scratch, but untouched by kernel */
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struct ia64_fpreg f15; /* scratch, but untouched by kernel */
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struct ia64_fpreg f16; /* preserved */
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struct ia64_fpreg f17; /* preserved */
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struct ia64_fpreg f18; /* preserved */
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struct ia64_fpreg f19; /* preserved */
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struct ia64_fpreg f20; /* preserved */
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struct ia64_fpreg f21; /* preserved */
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struct ia64_fpreg f22; /* preserved */
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struct ia64_fpreg f23; /* preserved */
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struct ia64_fpreg f24; /* preserved */
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struct ia64_fpreg f25; /* preserved */
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struct ia64_fpreg f26; /* preserved */
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struct ia64_fpreg f27; /* preserved */
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struct ia64_fpreg f28; /* preserved */
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struct ia64_fpreg f29; /* preserved */
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struct ia64_fpreg f30; /* preserved */
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struct ia64_fpreg f31; /* preserved */
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unsigned long r4; /* preserved */
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unsigned long r5; /* preserved */
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unsigned long r6; /* preserved */
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unsigned long r7; /* preserved */
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unsigned long b0; /* so we can force a direct return in copy_thread */
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unsigned long b1;
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unsigned long b2;
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unsigned long b3;
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unsigned long b4;
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unsigned long b5;
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unsigned long ar_pfs; /* previous function state */
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unsigned long ar_lc; /* loop counter (preserved) */
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unsigned long ar_unat; /* NaT bits for r4-r7 */
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unsigned long ar_rnat; /* RSE NaT collection register */
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unsigned long ar_bspstore; /* RSE dirty base (preserved) */
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unsigned long pr; /* 64 predicate registers (1 bit each) */
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};
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/* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */
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struct pt_all_user_regs {
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unsigned long nat;
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unsigned long cr_iip;
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unsigned long cfm;
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unsigned long cr_ipsr;
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unsigned long pr;
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unsigned long gr[32];
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unsigned long br[8];
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unsigned long ar[128];
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struct ia64_fpreg fr[128];
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};
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#endif /* !__ASSEMBLY__ */
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/* indices to application-registers array in pt_all_user_regs */
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#define PT_AUR_RSC 16
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#define PT_AUR_BSP 17
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#define PT_AUR_BSPSTORE 18
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#define PT_AUR_RNAT 19
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#define PT_AUR_CCV 32
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#define PT_AUR_UNAT 36
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#define PT_AUR_FPSR 40
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#define PT_AUR_PFS 64
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#define PT_AUR_LC 65
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#define PT_AUR_EC 66
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/*
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* The numbers chosen here are somewhat arbitrary but absolutely MUST
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* not overlap with any of the number assigned in <linux/ptrace.h>.
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*/
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#define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */
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#define PTRACE_OLD_GETSIGINFO 13 /* (replaced by PTRACE_GETSIGINFO in <linux/ptrace.h>) */
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#define PTRACE_OLD_SETSIGINFO 14 /* (replaced by PTRACE_SETSIGINFO in <linux/ptrace.h>) */
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#define PTRACE_GETREGS 18 /* get all registers (pt_all_user_regs) in one shot */
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#define PTRACE_SETREGS 19 /* set all registers (pt_all_user_regs) in one shot */
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#define PTRACE_OLDSETOPTIONS 21
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#endif /* _UAPI_ASM_IA64_PTRACE_H */
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