freebsd-dev/sys/arm/include/db_machdep.h
Ian Lepore a66dc0c52b Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't
have ACLE support built in.  The ACLE (ARM C Language Extensions) defines
a set of standardized symbols which indicate the architecture version and
features available.  ACLE support is built in to modern compilers (both
clang and gcc), but absent from gcc prior to 4.4.

ARM (the company) provides the acle-compat.h header file to define the
right symbols for older versions of gcc.  Basically, acle-compat.h does
for arm about the same thing cdefs.h does for freebsd: defines
standardized macros that work no matter which compiler you use.  If ARM
hadn't provided this file we would have ended up with a big #ifdef __arm__
section in cdefs.h with our own compatibility shims.

Remove #include <machine/acle-compat.h> from the zillion other places (an
ever-growing list) that it appears.  Since style(9) requires sys/types.h
or sys/param.h early in the include list, and both of those lead to
including cdefs.h, only a couple special cases still need to include
acle-compat.h directly.

Loves it:     imp
2016-05-25 19:44:26 +00:00

105 lines
3.1 KiB
C

/*-
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*
* from: FreeBSD: src/sys/i386/include/db_machdep.h,v 1.16 1999/10/04
* $FreeBSD$
*/
#ifndef _MACHINE_DB_MACHDEP_H_
#define _MACHINE_DB_MACHDEP_H_
#include <machine/frame.h>
#include <machine/trap.h>
#include <machine/armreg.h>
#define T_BREAKPOINT (1)
#define T_WATCHPOINT (2)
typedef vm_offset_t db_addr_t;
typedef int db_expr_t;
#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_regs.sf_pc)
#define BKPT_INST (KERNEL_BREAKPOINT)
#define BKPT_SIZE (INSN_SIZE)
#define BKPT_SET(inst) (BKPT_INST)
#define BKPT_SKIP do { \
kdb_frame->tf_pc += BKPT_SIZE; \
} while (0)
#if __ARM_ARCH >= 6
#define db_clear_single_step kdb_cpu_clear_singlestep
#define db_set_single_step kdb_cpu_set_singlestep
#define db_pc_is_singlestep kdb_cpu_pc_is_singlestep
#else
#define SOFTWARE_SSTEP 1
#endif
#define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT)
#define IS_WATCHPOINT_TRAP(type, code) (type == T_WATCHPOINT)
#define inst_trap_return(ins) (0)
/* ldmxx reg, {..., pc}
01800000 stack mode
000f0000 register
0000ffff register list */
/* mov pc, reg
0000000f register */
#define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \
((ins) & 0x0ff0fff0) == 0x01a0f000 || \
((ins) & 0x0ffffff0) == 0x012fff10) /* bx */
/* bl ...
00ffffff offset>>2 */
#define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000)
/* b ...
00ffffff offset>>2 */
/* ldr pc, [pc, reg, lsl #2]
0000000f register */
#define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \
((ins) & 0x0fdffff0) == 0x079ff100 || \
((ins) & 0x0cd0f000) == 0x0490f000 || \
((ins) & 0x0ffffff0) == 0x012fff30 || /* blx */ \
((ins) & 0x0de0f000) == 0x0080f000)
#define inst_load(ins) (0)
#define inst_store(ins) (0)
#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE))
#define DB_SMALL_VALUE_MAX (0x7fffffff)
#define DB_SMALL_VALUE_MIN (-0x40001)
#define DB_ELFSIZE 32
int db_validate_address(vm_offset_t);
u_int branch_taken (u_int insn, db_addr_t pc);
#ifdef __ARMEB__
#define BYTE_MSF (1)
#endif
#endif /* !_MACHINE_DB_MACHDEP_H_ */