diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86/sys/debugreg.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86/sys/debugreg.h | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/sysdeps/unix/sysv/linux/x86/sys/debugreg.h b/sysdeps/unix/sysv/linux/x86/sys/debugreg.h deleted file mode 100644 index eaa79a882b..0000000000 --- a/sysdeps/unix/sysv/linux/x86/sys/debugreg.h +++ /dev/null @@ -1,88 +0,0 @@ -/* Copyright (C) 2001-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#ifndef _SYS_DEBUGREG_H -#define _SYS_DEBUGREG_H 1 - -/* Indicate the register numbers for a number of the specific - debug registers. Registers 0-3 contain the addresses we wish to trap on */ -#define DR_FIRSTADDR 0 /* u_debugreg[DR_FIRSTADDR] */ -#define DR_LASTADDR 3 /* u_debugreg[DR_LASTADDR] */ - -#define DR_STATUS 6 /* u_debugreg[DR_STATUS] */ -#define DR_CONTROL 7 /* u_debugreg[DR_CONTROL] */ - -/* Define a few things for the status register. We can use this to determine - which debugging register was responsible for the trap. The other bits - are either reserved or not of interest to us. */ - -#define DR_TRAP0 (0x1) /* db0 */ -#define DR_TRAP1 (0x2) /* db1 */ -#define DR_TRAP2 (0x4) /* db2 */ -#define DR_TRAP3 (0x8) /* db3 */ - -#define DR_STEP (0x4000) /* single-step */ -#define DR_SWITCH (0x8000) /* task switch */ - -/* Now define a bunch of things for manipulating the control register. - The top two bytes of the control register consist of 4 fields of 4 - bits - each field corresponds to one of the four debug registers, - and indicates what types of access we trap on, and how large the data - field is that we are looking at */ - -#define DR_CONTROL_SHIFT 16 /* Skip this many bits in ctl register */ -#define DR_CONTROL_SIZE 4 /* 4 control bits per register */ - -#define DR_RW_EXECUTE (0x0) /* Settings for the access types to trap on */ -#define DR_RW_WRITE (0x1) -#define DR_RW_READ (0x3) - -#define DR_LEN_1 (0x0) /* Settings for data length to trap on */ -#define DR_LEN_2 (0x4) -#define DR_LEN_4 (0xC) -#ifdef __x86_64__ -# define DR_LEN_8 (0x8) -#endif - -/* The low byte to the control register determine which registers are - enabled. There are 4 fields of two bits. One bit is "local", meaning - that the processor will reset the bit after a task switch and the other - is global meaning that we have to explicitly reset the bit. With linux, - you can use either one, since we explicitly zero the register when we enter - kernel mode. */ - -#define DR_LOCAL_ENABLE_SHIFT 0 /* Extra shift to the local enable bit */ -#define DR_GLOBAL_ENABLE_SHIFT 1 /* Extra shift to the global enable bit */ -#define DR_ENABLE_SIZE 2 /* 2 enable bits per register */ - -#define DR_LOCAL_ENABLE_MASK (0x55) /* Set local bits for all 4 regs */ -#define DR_GLOBAL_ENABLE_MASK (0xAA) /* Set global bits for all 4 regs */ - -/* The second byte to the control register has a few special - things. */ - - - -#ifdef __x86_64__ -# define DR_CONTROL_RESERVED (0xFFFFFFFF0000FC00ULL) /* Reserved */ -#else -# define DR_CONTROL_RESERVED (0x00FC00U) /* Reserved */ -#endif -#define DR_LOCAL_SLOWDOWN (0x100) /* Local slow the pipeline */ -#define DR_GLOBAL_SLOWDOWN (0x200) /* Global slow the pipeline */ - -#endif /* sys/debugreg.h */ |