Differential D4907 Diff 12229 sys/x86/include/stack.h

Changeset View

Standalone View

sys/x86/include/stack.h

Context not available.
	*	*
	* $FreeBSD$	* $FreeBSD$
	*/	*/

	#ifndef _X86_STACK_H	#ifndef _X86_STACK_H
	#define _X86_STACK_H	#define _X86_STACK_H

Context not available.
	uint32_t f_retaddr;	uint32_t f_retaddr;
	uint32_t f_arg0;	uint32_t f_arg0;
	};	};
		typedef const struct amd64_frame *stack_frame_ptr;
		struct __call_instruction { unsigned char c; };
		typedef const struct __call_instruction *instruction_ptr;

		/**
		* @return instruction pointer of the caller of the given stack
		*/
		instruction_ptr stack_frame_caller_ip(stack_frame_ptr frame);

		/**
		* current_stack_frame() is a macro instead of an inline function so
		* cannot possibly have its own stack frame.
		*/
		#define _current_stack_frame(fp) \
		({ stack_frame_ptr fp; __asm("movq %%rbp,%0;" : "=r" (fp)); fp; })
		#define current_stack_frame() _current_stack_frame(__UNIQ)
		/**
		* This macro evaluates to the caller of the current function. It is a macro so
		* that it cannot possibly have its own stack frame.
		*/
		#define get_caller_ip() stack_frame_caller_ip(current_stack_frame())
		cemUnsubmitted Not Done Inline Actions Why not use the GCC function `__builtin_return_address()` instead? That should be somewhat portable to non-x86? https://gcc.gnu.org/onlinedocs/gcc/Return-Address.html Clang/LLVM support the macros as well (for X86 since LLVM2.5): https://github.com/llvm-mirror/clang/blob/master/test/Sema/builtin-stackaddress.c cem: Why not use the GCC function `__builtin_return_address()` instead? That should be somewhat…
		darius-dons.net.auAuthorUnsubmitted Not Done Inline Actions Wow, that looks like exactly what I want :) I'll update the patch. darius-dons.net.au: Wow, that looks like exactly what I want :) I'll update the patch.
	#endif /* __amd64__ */	#endif /* __amd64__ */

	#ifdef _KERNEL	#ifdef _KERNEL
Context not available.