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ARM: Add asm_offsets.cpp

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This will generate asm_offsets.h which makes our assembly code
easier to maintain by preventing hardcoded offsets for fields within structures.

(copied from X86 and removed the X86 specifics)
This commit is contained in:
Ithamar R. Adema 2012-11-06 11:06:04 +01:00
parent ff163585ec
commit 0cf5ecba12
1 changed files with 62 additions and 0 deletions
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62
src/system/kernel/arch/arm/asm_offsets.cpp Normal file
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/*
* Copyright 2007-2011, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
// This file is used to get C structure offsets into assembly code.
// The build system assembles the file and processes the output to create
// a header file with macro definitions, that can be included from assembly
// code.
#include <computed_asm_macros.h>
#include <arch_cpu.h>
#include <cpu.h>
#include <ksignal.h>
#include <ksyscalls.h>
#include <thread_types.h>
#define DEFINE_MACRO(macro, value) DEFINE_COMPUTED_ASM_MACRO(macro, value)
#define DEFINE_OFFSET_MACRO(prefix, structure, member) \
DEFINE_MACRO(prefix##_##member, offsetof(struct structure, member));
#define DEFINE_SIZEOF_MACRO(prefix, structure) \
DEFINE_MACRO(prefix##_sizeof, sizeof(struct structure));
void
dummy()
{
// struct cpu_ent
DEFINE_OFFSET_MACRO(CPU_ENT, cpu_ent, fault_handler);
DEFINE_OFFSET_MACRO(CPU_ENT, cpu_ent, fault_handler_stack_pointer);
// struct Thread
DEFINE_OFFSET_MACRO(THREAD, Thread, time_lock);
DEFINE_OFFSET_MACRO(THREAD, Thread, kernel_time);
DEFINE_OFFSET_MACRO(THREAD, Thread, user_time);
DEFINE_OFFSET_MACRO(THREAD, Thread, last_time);
DEFINE_OFFSET_MACRO(THREAD, Thread, in_kernel);
DEFINE_OFFSET_MACRO(THREAD, Thread, flags);
DEFINE_OFFSET_MACRO(THREAD, Thread, kernel_stack_top);
DEFINE_OFFSET_MACRO(THREAD, Thread, fault_handler);
// struct iframe
DEFINE_SIZEOF_MACRO(IFRAME, iframe);
// struct signal_frame_data
DEFINE_SIZEOF_MACRO(SIGNAL_FRAME_DATA, signal_frame_data);
DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, info);
DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, context);
DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, user_data);
DEFINE_OFFSET_MACRO(SIGNAL_FRAME_DATA, signal_frame_data, handler);
// struct ucontext_t
DEFINE_OFFSET_MACRO(UCONTEXT_T, __ucontext_t, uc_mcontext);
// struct siginfo_t
DEFINE_OFFSET_MACRO(SIGINFO_T, __siginfo_t, si_signo);
}