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248 lines
8.1 KiB
248 lines
8.1 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* Copyright (C) 1998-2004 Hewlett-Packard Co |
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* David Mosberger-Tang <[email protected]> |
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* Stephane Eranian <[email protected]> |
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* Copyright (C) 2003 Intel Co |
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* Suresh Siddha <[email protected]> |
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* Fenghua Yu <[email protected]> |
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* Arun Sharma <[email protected]> |
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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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