MIPS: add asm-offsets.h generation
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Antony Pavlov
Sascha Hauer
parent
fbf502a9c2
commit
ddac4f3ea2
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@ -143,3 +143,46 @@ dtbs: scripts
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KBUILD_DTBS := dtbs
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KBUILD_IMAGE ?= $(KBUILD_BINARY)
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#####
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# Generate asm-offsets.h
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#
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offsets-file := include/generated/asm-offsets.h
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always += $(offsets-file)
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targets += $(offsets-file)
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targets += arch/$(SRCARCH)/lib/asm-offsets.s
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# Default sed regexp - multiline due to syntax constraints
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define sed-y
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"/^->/{s:->#\(.*\):/* \1 */:; \
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s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
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s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
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s:->::; p;}"
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endef
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quiet_cmd_offsets = GEN $@
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define cmd_offsets
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(set -e; \
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echo "#ifndef __ASM_OFFSETS_H__"; \
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echo "#define __ASM_OFFSETS_H__"; \
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echo "/*"; \
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echo " * DO NOT MODIFY."; \
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echo " *"; \
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echo " * This file was generated by Kbuild"; \
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echo " *"; \
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echo " */"; \
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echo ""; \
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sed -ne $(sed-y) $<; \
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echo ""; \
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echo "#endif" ) > $@
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endef
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# We use internal kbuild rules to avoid the "is up to date" message from make
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arch/$(SRCARCH)/lib/asm-offsets.s: arch/$(SRCARCH)/lib/asm-offsets.c FORCE
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$(Q)mkdir -p $(dir $@)
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$(call if_changed_dep,cc_s_c)
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$(obj)/$(offsets-file): arch/$(SRCARCH)/lib/asm-offsets.s Makefile
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$(call cmd,offsets)
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@ -0,0 +1 @@
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#include <generated/asm-offsets.h>
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@ -0,0 +1,35 @@
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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*/
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#ifndef _ASM_PTRACE_H
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#define _ASM_PTRACE_H
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/*
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* This struct defines the way the registers are stored on the stack during an
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* exception. As usual the registers k0/k1 aren't being saved.
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*/
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struct pt_regs {
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#ifdef CONFIG_32BIT
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/* Pad bytes for argument save space on the stack. */
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unsigned long pad0[6];
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#endif
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/* Saved main processor registers. */
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unsigned long regs[32];
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/* Saved special registers. */
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unsigned long cp0_status;
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unsigned long hi;
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unsigned long lo;
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unsigned long cp0_badvaddr;
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unsigned long cp0_cause;
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unsigned long cp0_epc;
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} __attribute__ ((aligned (8)));
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#endif /* _ASM_PTRACE_H */
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@ -0,0 +1,61 @@
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/*
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* offset.c: Calculate pt_regs and task_struct offsets.
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*
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* Copyright (C) 1996 David S. Miller
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* Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Ralf Baechle
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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*
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* Kevin Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
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* Copyright (C) 2000 MIPS Technologies, Inc.
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*/
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#include <linux/kbuild.h>
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#include <linux/stddef.h>
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#include <asm/ptrace.h>
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void output_ptreg_defines(void);
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void output_ptreg_defines(void)
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{
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COMMENT("MIPS pt_regs offsets.");
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OFFSET(PT_R0, pt_regs, regs[0]);
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OFFSET(PT_R1, pt_regs, regs[1]);
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OFFSET(PT_R2, pt_regs, regs[2]);
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OFFSET(PT_R3, pt_regs, regs[3]);
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OFFSET(PT_R4, pt_regs, regs[4]);
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OFFSET(PT_R5, pt_regs, regs[5]);
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OFFSET(PT_R6, pt_regs, regs[6]);
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OFFSET(PT_R7, pt_regs, regs[7]);
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OFFSET(PT_R8, pt_regs, regs[8]);
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OFFSET(PT_R9, pt_regs, regs[9]);
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OFFSET(PT_R10, pt_regs, regs[10]);
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OFFSET(PT_R11, pt_regs, regs[11]);
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OFFSET(PT_R12, pt_regs, regs[12]);
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OFFSET(PT_R13, pt_regs, regs[13]);
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OFFSET(PT_R14, pt_regs, regs[14]);
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OFFSET(PT_R15, pt_regs, regs[15]);
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OFFSET(PT_R16, pt_regs, regs[16]);
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OFFSET(PT_R17, pt_regs, regs[17]);
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OFFSET(PT_R18, pt_regs, regs[18]);
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OFFSET(PT_R19, pt_regs, regs[19]);
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OFFSET(PT_R20, pt_regs, regs[20]);
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OFFSET(PT_R21, pt_regs, regs[21]);
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OFFSET(PT_R22, pt_regs, regs[22]);
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OFFSET(PT_R23, pt_regs, regs[23]);
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OFFSET(PT_R24, pt_regs, regs[24]);
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OFFSET(PT_R25, pt_regs, regs[25]);
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OFFSET(PT_R26, pt_regs, regs[26]);
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OFFSET(PT_R27, pt_regs, regs[27]);
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OFFSET(PT_R28, pt_regs, regs[28]);
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OFFSET(PT_R29, pt_regs, regs[29]);
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OFFSET(PT_R30, pt_regs, regs[30]);
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OFFSET(PT_R31, pt_regs, regs[31]);
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OFFSET(PT_LO, pt_regs, lo);
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OFFSET(PT_HI, pt_regs, hi);
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OFFSET(PT_EPC, pt_regs, cp0_epc);
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OFFSET(PT_BVADDR, pt_regs, cp0_badvaddr);
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OFFSET(PT_STATUS, pt_regs, cp0_status);
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OFFSET(PT_CAUSE, pt_regs, cp0_cause);
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DEFINE(PT_SIZE, sizeof(struct pt_regs));
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BLANK();
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}
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@ -0,0 +1,15 @@
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#ifndef __LINUX_KBUILD_H
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#define __LINUX_KBUILD_H
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#define DEFINE(sym, val) \
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asm volatile("\n->" #sym " %0 " #val : : "i" (val))
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#define BLANK() asm volatile("\n->" : : )
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#define OFFSET(sym, str, mem) \
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DEFINE(sym, offsetof(struct str, mem))
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#define COMMENT(x) \
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asm volatile("\n->#" x)
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#endif
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