[mirror_ubuntu-hirsute-kernel.git] / arch / x86 / include / asm / dwarf2.h

#ifndef _ASM_X86_DWARF2_H
#define _ASM_X86_DWARF2_H

#ifndef __ASSEMBLY__
#warning "asm/dwarf2.h should be only included in pure assembly files"
#endif

/*
 * Macros for dwarf2 CFI unwind table entries.
 * See "as.info" for details on these pseudo ops. Unfortunately
 * they are only supported in very new binutils, so define them
 * away for older version.
 */

#ifdef CONFIG_AS_CFI

#define CFI_STARTPROC		.cfi_startproc
#define CFI_ENDPROC		.cfi_endproc
#define CFI_DEF_CFA		.cfi_def_cfa
#define CFI_DEF_CFA_REGISTER	.cfi_def_cfa_register
#define CFI_DEF_CFA_OFFSET	.cfi_def_cfa_offset
#define CFI_ADJUST_CFA_OFFSET	.cfi_adjust_cfa_offset
#define CFI_OFFSET		.cfi_offset
#define CFI_REL_OFFSET		.cfi_rel_offset
#define CFI_REGISTER		.cfi_register
#define CFI_RESTORE		.cfi_restore
#define CFI_REMEMBER_STATE	.cfi_remember_state
#define CFI_RESTORE_STATE	.cfi_restore_state
#define CFI_UNDEFINED		.cfi_undefined

#ifdef CONFIG_AS_CFI_SIGNAL_FRAME
#define CFI_SIGNAL_FRAME	.cfi_signal_frame
#else
#define CFI_SIGNAL_FRAME
#endif

#if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__)
	/*
	 * Emit CFI data in .debug_frame sections, not .eh_frame sections.
	 * The latter we currently just discard since we don't do DWARF
	 * unwinding at runtime.  So only the offline DWARF information is
	 * useful to anyone.  Note we should not use this directive if this
	 * file is used in the vDSO assembly, or if vmlinux.lds.S gets
	 * changed so it doesn't discard .eh_frame.
	 */
	.cfi_sections .debug_frame
#endif

#else

/*
 * Due to the structure of pre-exisiting code, don't use assembler line
 * comment character # to ignore the arguments. Instead, use a dummy macro.
 */
.macro cfi_ignore a=0, b=0, c=0, d=0
.endm

#define CFI_STARTPROC		cfi_ignore
#define CFI_ENDPROC		cfi_ignore
#define CFI_DEF_CFA		cfi_ignore
#define CFI_DEF_CFA_REGISTER	cfi_ignore
#define CFI_DEF_CFA_OFFSET	cfi_ignore
#define CFI_ADJUST_CFA_OFFSET	cfi_ignore
#define CFI_OFFSET		cfi_ignore
#define CFI_REL_OFFSET		cfi_ignore
#define CFI_REGISTER		cfi_ignore
#define CFI_RESTORE		cfi_ignore
#define CFI_REMEMBER_STATE	cfi_ignore
#define CFI_RESTORE_STATE	cfi_ignore
#define CFI_UNDEFINED		cfi_ignore
#define CFI_SIGNAL_FRAME	cfi_ignore

#endif

/*
 * An attempt to make CFI annotations more or less
 * correct and shorter. It is implied that you know
 * what you're doing if you use them.
 */
#ifdef __ASSEMBLY__
#ifdef CONFIG_X86_64
	.macro pushq_cfi reg
	pushq \reg
	CFI_ADJUST_CFA_OFFSET 8
	.endm

	.macro popq_cfi reg
	popq \reg
	CFI_ADJUST_CFA_OFFSET -8
	.endm

	.macro movq_cfi reg offset=0
	movq %\reg, \offset(%rsp)
	CFI_REL_OFFSET \reg, \offset
	.endm

	.macro movq_cfi_restore offset reg
	movq \offset(%rsp), %\reg
	CFI_RESTORE \reg
	.endm
#else /*!CONFIG_X86_64*/
	.macro pushl_cfi reg
	pushl \reg
	CFI_ADJUST_CFA_OFFSET 4
	.endm

	.macro popl_cfi reg
	popl \reg
	CFI_ADJUST_CFA_OFFSET -4
	.endm

	.macro movl_cfi reg offset=0
	movl %\reg, \offset(%esp)
	CFI_REL_OFFSET \reg, \offset
	.endm

	.macro movl_cfi_restore offset reg
	movl \offset(%esp), %\reg
	CFI_RESTORE \reg
	.endm
#endif /*!CONFIG_X86_64*/
#endif /*__ASSEMBLY__*/

#endif /* _ASM_X86_DWARF2_H */
Commit	Line	Data
1965aae3 PA	1	#ifndef _ASM_X86_DWARF2_H
1965aae3 PA	2	#define _ASM_X86_DWARF2_H
392a0fc9 GC	3
	4	#ifndef __ASSEMBLY__
	5	#warning "asm/dwarf2.h should be only included in pure assembly files"
	6	#endif
	7
	8	/*
8a2503fa CG	9	* Macros for dwarf2 CFI unwind table entries.
	10	* See "as.info" for details on these pseudo ops. Unfortunately
	11	* they are only supported in very new binutils, so define them
	12	* away for older version.
392a0fc9 GC	13	*/
	14
	15	#ifdef CONFIG_AS_CFI
	16
8a2503fa CG	17	#define CFI_STARTPROC .cfi_startproc
	18	#define CFI_ENDPROC .cfi_endproc
	19	#define CFI_DEF_CFA .cfi_def_cfa
	20	#define CFI_DEF_CFA_REGISTER .cfi_def_cfa_register
	21	#define CFI_DEF_CFA_OFFSET .cfi_def_cfa_offset
	22	#define CFI_ADJUST_CFA_OFFSET .cfi_adjust_cfa_offset
	23	#define CFI_OFFSET .cfi_offset
	24	#define CFI_REL_OFFSET .cfi_rel_offset
	25	#define CFI_REGISTER .cfi_register
	26	#define CFI_RESTORE .cfi_restore
	27	#define CFI_REMEMBER_STATE .cfi_remember_state
	28	#define CFI_RESTORE_STATE .cfi_restore_state
	29	#define CFI_UNDEFINED .cfi_undefined
392a0fc9 GC	30
392a0fc9 GC	31	#ifdef CONFIG_AS_CFI_SIGNAL_FRAME
8a2503fa	32	#define CFI_SIGNAL_FRAME .cfi_signal_frame
392a0fc9 GC	33	#else
	34	#define CFI_SIGNAL_FRAME
	35	#endif
	36
9e565292 RM	37	#if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__)
	38	/*
	39	* Emit CFI data in .debug_frame sections, not .eh_frame sections.
	40	* The latter we currently just discard since we don't do DWARF
	41	* unwinding at runtime. So only the offline DWARF information is
	42	* useful to anyone. Note we should not use this directive if this
	43	* file is used in the vDSO assembly, or if vmlinux.lds.S gets
	44	* changed so it doesn't discard .eh_frame.
	45	*/
	46	.cfi_sections .debug_frame
	47	#endif
	48
96a388de	49	#else
392a0fc9	50
8a2503fa CG	51	/*
	52	* Due to the structure of pre-exisiting code, don't use assembler line
	53	* comment character # to ignore the arguments. Instead, use a dummy macro.
	54	*/
3f1c3872	55	.macro cfi_ignore a=0, b=0, c=0, d=0
392a0fc9 GC	56	.endm
392a0fc9 GC	57
8a2503fa CG	58	#define CFI_STARTPROC cfi_ignore
	59	#define CFI_ENDPROC cfi_ignore
	60	#define CFI_DEF_CFA cfi_ignore
3f1c3872 KW	61	#define CFI_DEF_CFA_REGISTER cfi_ignore
	62	#define CFI_DEF_CFA_OFFSET cfi_ignore
	63	#define CFI_ADJUST_CFA_OFFSET cfi_ignore
8a2503fa CG	64	#define CFI_OFFSET cfi_ignore
	65	#define CFI_REL_OFFSET cfi_ignore
	66	#define CFI_REGISTER cfi_ignore
	67	#define CFI_RESTORE cfi_ignore
	68	#define CFI_REMEMBER_STATE cfi_ignore
	69	#define CFI_RESTORE_STATE cfi_ignore
	70	#define CFI_UNDEFINED cfi_ignore
	71	#define CFI_SIGNAL_FRAME cfi_ignore
392a0fc9 GC	72
	73	#endif
	74
8a2503fa CG	75	/*
	76	* An attempt to make CFI annotations more or less
	77	* correct and shorter. It is implied that you know
	78	* what you're doing if you use them.
	79	*/
	80	#ifdef __ASSEMBLY__
	81	#ifdef CONFIG_X86_64
	82	.macro pushq_cfi reg
	83	pushq \reg
	84	CFI_ADJUST_CFA_OFFSET 8
	85	.endm
	86
	87	.macro popq_cfi reg
	88	popq \reg
	89	CFI_ADJUST_CFA_OFFSET -8
	90	.endm
	91
	92	.macro movq_cfi reg offset=0
	93	movq %\reg, \offset(%rsp)
	94	CFI_REL_OFFSET \reg, \offset
	95	.endm
	96
	97	.macro movq_cfi_restore offset reg
	98	movq \offset(%rsp), %\reg
	99	CFI_RESTORE \reg
	100	.endm
	101	#else /!CONFIG_X86_64/
fe9b4e4e PA	102	.macro pushl_cfi reg
	103	pushl \reg
	104	CFI_ADJUST_CFA_OFFSET 4
	105	.endm
8a2503fa	106
fe9b4e4e PA	107	.macro popl_cfi reg
	108	popl \reg
	109	CFI_ADJUST_CFA_OFFSET -4
	110	.endm
8a2503fa	111
fe9b4e4e PA	112	.macro movl_cfi reg offset=0
	113	movl %\reg, \offset(%esp)
	114	CFI_REL_OFFSET \reg, \offset
	115	.endm
	116
	117	.macro movl_cfi_restore offset reg
	118	movl \offset(%esp), %\reg
	119	CFI_RESTORE \reg
	120	.endm
8a2503fa CG	121	#endif /!CONFIG_X86_64/
	122	#endif /__ASSEMBLY__/
	123
1965aae3	124	#endif /* _ASM_X86_DWARF2_H */