cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

ptrace.h (8298B)


      1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
      2/*
      3 * Copyright (C) 1998-2004 Hewlett-Packard Co
      4 *	David Mosberger-Tang <davidm@hpl.hp.com>
      5 *	Stephane Eranian <eranian@hpl.hp.com>
      6 * Copyright (C) 2003 Intel Co
      7 *	Suresh Siddha <suresh.b.siddha@intel.com>
      8 *	Fenghua Yu <fenghua.yu@intel.com>
      9 *	Arun Sharma <arun.sharma@intel.com>
     10 *
     11 * 12/07/98	S. Eranian	added pt_regs & switch_stack
     12 * 12/21/98	D. Mosberger	updated to match latest code
     13 *  6/17/99	D. Mosberger	added second unat member to "struct switch_stack"
     14 *
     15 */
     16#ifndef _UAPI_ASM_IA64_PTRACE_H
     17#define _UAPI_ASM_IA64_PTRACE_H
     18
     19/*
     20 * When a user process is blocked, its state looks as follows:
     21 *
     22 *            +----------------------+	-------	IA64_STK_OFFSET
     23 *     	      |			     |	 ^
     24 *            | struct pt_regs       |	 |
     25 *	      |			     |	 |
     26 *            +----------------------+	 |
     27 *	      |			     |	 |
     28 *     	      |	   memory stack	     |	 |
     29 *	      |	(growing downwards)  |	 |
     30 *	      //.....................//	 |
     31 *					 |
     32 *	      //.....................//	 |
     33 *	      |			     |	 |
     34 *            +----------------------+	 |
     35 *            | struct switch_stack  |	 |
     36 *	      |			     |	 |
     37 *	      +----------------------+	 |
     38 *	      |			     |	 |
     39 *	      //.....................//	 |
     40 *					 |
     41 *	      //.....................//	 |
     42 *	      |			     |	 |
     43 *	      |	 register stack	     |	 |
     44 *	      |	(growing upwards)    |	 |
     45 *            |			     |	 |
     46 *	      +----------------------+	 |  ---	IA64_RBS_OFFSET
     47 *            |  struct thread_info  |	 |  ^
     48 *	      +----------------------+	 |  |
     49 *	      |			     |	 |  |
     50 *            |  struct task_struct  |	 |  |
     51 * current -> |			     |   |  |
     52 *	      +----------------------+ -------
     53 *
     54 * Note that ar.ec is not saved explicitly in pt_reg or switch_stack.
     55 * This is because ar.ec is saved as part of ar.pfs.
     56 */
     57
     58
     59#include <asm/fpu.h>
     60
     61
     62#ifndef __ASSEMBLY__
     63
     64/*
     65 * This struct defines the way the registers are saved on system
     66 * calls.
     67 *
     68 * We don't save all floating point register because the kernel
     69 * is compiled to use only a very small subset, so the other are
     70 * untouched.
     71 *
     72 * THIS STRUCTURE MUST BE A MULTIPLE 16-BYTE IN SIZE
     73 * (because the memory stack pointer MUST ALWAYS be aligned this way)
     74 *
     75 */
     76struct pt_regs {
     77	/* The following registers are saved by SAVE_MIN: */
     78	unsigned long b6;		/* scratch */
     79	unsigned long b7;		/* scratch */
     80
     81	unsigned long ar_csd;           /* used by cmp8xchg16 (scratch) */
     82	unsigned long ar_ssd;           /* reserved for future use (scratch) */
     83
     84	unsigned long r8;		/* scratch (return value register 0) */
     85	unsigned long r9;		/* scratch (return value register 1) */
     86	unsigned long r10;		/* scratch (return value register 2) */
     87	unsigned long r11;		/* scratch (return value register 3) */
     88
     89	unsigned long cr_ipsr;		/* interrupted task's psr */
     90	unsigned long cr_iip;		/* interrupted task's instruction pointer */
     91	/*
     92	 * interrupted task's function state; if bit 63 is cleared, it
     93	 * contains syscall's ar.pfs.pfm:
     94	 */
     95	unsigned long cr_ifs;
     96
     97	unsigned long ar_unat;		/* interrupted task's NaT register (preserved) */
     98	unsigned long ar_pfs;		/* prev function state  */
     99	unsigned long ar_rsc;		/* RSE configuration */
    100	/* The following two are valid only if cr_ipsr.cpl > 0 || ti->flags & _TIF_MCA_INIT */
    101	unsigned long ar_rnat;		/* RSE NaT */
    102	unsigned long ar_bspstore;	/* RSE bspstore */
    103
    104	unsigned long pr;		/* 64 predicate registers (1 bit each) */
    105	unsigned long b0;		/* return pointer (bp) */
    106	unsigned long loadrs;		/* size of dirty partition << 16 */
    107
    108	unsigned long r1;		/* the gp pointer */
    109	unsigned long r12;		/* interrupted task's memory stack pointer */
    110	unsigned long r13;		/* thread pointer */
    111
    112	unsigned long ar_fpsr;		/* floating point status (preserved) */
    113	unsigned long r15;		/* scratch */
    114
    115	/* The remaining registers are NOT saved for system calls.  */
    116
    117	unsigned long r14;		/* scratch */
    118	unsigned long r2;		/* scratch */
    119	unsigned long r3;		/* scratch */
    120
    121	/* The following registers are saved by SAVE_REST: */
    122	unsigned long r16;		/* scratch */
    123	unsigned long r17;		/* scratch */
    124	unsigned long r18;		/* scratch */
    125	unsigned long r19;		/* scratch */
    126	unsigned long r20;		/* scratch */
    127	unsigned long r21;		/* scratch */
    128	unsigned long r22;		/* scratch */
    129	unsigned long r23;		/* scratch */
    130	unsigned long r24;		/* scratch */
    131	unsigned long r25;		/* scratch */
    132	unsigned long r26;		/* scratch */
    133	unsigned long r27;		/* scratch */
    134	unsigned long r28;		/* scratch */
    135	unsigned long r29;		/* scratch */
    136	unsigned long r30;		/* scratch */
    137	unsigned long r31;		/* scratch */
    138
    139	unsigned long ar_ccv;		/* compare/exchange value (scratch) */
    140
    141	/*
    142	 * Floating point registers that the kernel considers scratch:
    143	 */
    144	struct ia64_fpreg f6;		/* scratch */
    145	struct ia64_fpreg f7;		/* scratch */
    146	struct ia64_fpreg f8;		/* scratch */
    147	struct ia64_fpreg f9;		/* scratch */
    148	struct ia64_fpreg f10;		/* scratch */
    149	struct ia64_fpreg f11;		/* scratch */
    150};
    151
    152/*
    153 * This structure contains the addition registers that need to
    154 * preserved across a context switch.  This generally consists of
    155 * "preserved" registers.
    156 */
    157struct switch_stack {
    158	unsigned long caller_unat;	/* user NaT collection register (preserved) */
    159	unsigned long ar_fpsr;		/* floating-point status register */
    160
    161	struct ia64_fpreg f2;		/* preserved */
    162	struct ia64_fpreg f3;		/* preserved */
    163	struct ia64_fpreg f4;		/* preserved */
    164	struct ia64_fpreg f5;		/* preserved */
    165
    166	struct ia64_fpreg f12;		/* scratch, but untouched by kernel */
    167	struct ia64_fpreg f13;		/* scratch, but untouched by kernel */
    168	struct ia64_fpreg f14;		/* scratch, but untouched by kernel */
    169	struct ia64_fpreg f15;		/* scratch, but untouched by kernel */
    170	struct ia64_fpreg f16;		/* preserved */
    171	struct ia64_fpreg f17;		/* preserved */
    172	struct ia64_fpreg f18;		/* preserved */
    173	struct ia64_fpreg f19;		/* preserved */
    174	struct ia64_fpreg f20;		/* preserved */
    175	struct ia64_fpreg f21;		/* preserved */
    176	struct ia64_fpreg f22;		/* preserved */
    177	struct ia64_fpreg f23;		/* preserved */
    178	struct ia64_fpreg f24;		/* preserved */
    179	struct ia64_fpreg f25;		/* preserved */
    180	struct ia64_fpreg f26;		/* preserved */
    181	struct ia64_fpreg f27;		/* preserved */
    182	struct ia64_fpreg f28;		/* preserved */
    183	struct ia64_fpreg f29;		/* preserved */
    184	struct ia64_fpreg f30;		/* preserved */
    185	struct ia64_fpreg f31;		/* preserved */
    186
    187	unsigned long r4;		/* preserved */
    188	unsigned long r5;		/* preserved */
    189	unsigned long r6;		/* preserved */
    190	unsigned long r7;		/* preserved */
    191
    192	unsigned long b0;		/* so we can force a direct return in copy_thread */
    193	unsigned long b1;
    194	unsigned long b2;
    195	unsigned long b3;
    196	unsigned long b4;
    197	unsigned long b5;
    198
    199	unsigned long ar_pfs;		/* previous function state */
    200	unsigned long ar_lc;		/* loop counter (preserved) */
    201	unsigned long ar_unat;		/* NaT bits for r4-r7 */
    202	unsigned long ar_rnat;		/* RSE NaT collection register */
    203	unsigned long ar_bspstore;	/* RSE dirty base (preserved) */
    204	unsigned long pr;		/* 64 predicate registers (1 bit each) */
    205};
    206
    207
    208/* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */
    209struct pt_all_user_regs {
    210	unsigned long nat;
    211	unsigned long cr_iip;
    212	unsigned long cfm;
    213	unsigned long cr_ipsr;
    214	unsigned long pr;
    215
    216	unsigned long gr[32];
    217	unsigned long br[8];
    218	unsigned long ar[128];
    219	struct ia64_fpreg fr[128];
    220};
    221
    222#endif /* !__ASSEMBLY__ */
    223
    224/* indices to application-registers array in pt_all_user_regs */
    225#define PT_AUR_RSC	16
    226#define PT_AUR_BSP	17
    227#define PT_AUR_BSPSTORE	18
    228#define PT_AUR_RNAT	19
    229#define PT_AUR_CCV	32
    230#define PT_AUR_UNAT	36
    231#define PT_AUR_FPSR	40
    232#define PT_AUR_PFS	64
    233#define PT_AUR_LC	65
    234#define PT_AUR_EC	66
    235
    236/*
    237 * The numbers chosen here are somewhat arbitrary but absolutely MUST
    238 * not overlap with any of the number assigned in <linux/ptrace.h>.
    239 */
    240#define PTRACE_SINGLEBLOCK	12	/* resume execution until next branch */
    241#define PTRACE_OLD_GETSIGINFO	13	/* (replaced by PTRACE_GETSIGINFO in <linux/ptrace.h>)  */
    242#define PTRACE_OLD_SETSIGINFO	14	/* (replaced by PTRACE_SETSIGINFO in <linux/ptrace.h>)  */
    243#define PTRACE_GETREGS		18	/* get all registers (pt_all_user_regs) in one shot */
    244#define PTRACE_SETREGS		19	/* set all registers (pt_all_user_regs) in one shot */
    245
    246#define PTRACE_OLDSETOPTIONS	21
    247
    248#endif /* _UAPI_ASM_IA64_PTRACE_H */