xref: /arch/xtensa/variants/s6000/include/variant/tie-asm.h

/*
 * This header file contains assembly-language definitions (assembly
 * macros, etc.) for this specific Xtensa processor's TIE extensions
 * and options.  It is customized to this Xtensa processor configuration.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1999-2008 Tensilica Inc.
 */

#ifndef _XTENSA_CORE_TIE_ASM_H
#define _XTENSA_CORE_TIE_ASM_H

/*  Selection parameter values for save-area save/restore macros:  */
/*  Option vs. TIE:  */
#define XTHAL_SAS_TIE	0x0001	/* custom extension or coprocessor */
#define XTHAL_SAS_OPT	0x0002	/* optional (and not a coprocessor) */
/*  Whether used automatically by compiler:  */
#define XTHAL_SAS_NOCC	0x0004	/* not used by compiler w/o special opts/code */
#define XTHAL_SAS_CC	0x0008	/* used by compiler without special opts/code */
/*  ABI handling across function calls:  */
#define XTHAL_SAS_CALR	0x0010	/* caller-saved */
#define XTHAL_SAS_CALE	0x0020	/* callee-saved */
#define XTHAL_SAS_GLOB	0x0040	/* global across function calls (in thread) */
/*  Misc  */
#define XTHAL_SAS_ALL	0xFFFF	/* include all default NCP contents */



/* Macro to save all non-coprocessor (extra) custom TIE and optional state
 * (not including zero-overhead loop registers).
 * Save area ptr (clobbered):  ptr  (16 byte aligned)
 * Scratch regs  (clobbered):  at1..at4  (only first XCHAL_NCP_NUM_ATMPS needed)
 */
	.macro xchal_ncp_store  ptr at1 at2 at3 at4  continue=0 ofs=-1 select=XTHAL_SAS_ALL
	xchal_sa_start	\continue, \ofs
	.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
	xchal_sa_align	\ptr, 0, 1024-4, 4, 4
	rsr	\at1, BR		// boolean option
	s32i	\at1, \ptr, .Lxchal_ofs_ + 0
	.set	.Lxchal_ofs_, .Lxchal_ofs_ + 4
	.endif
	.endm	// xchal_ncp_store

/* Macro to save all non-coprocessor (extra) custom TIE and optional state
 * (not including zero-overhead loop registers).
 * Save area ptr (clobbered):  ptr  (16 byte aligned)
 * Scratch regs  (clobbered):  at1..at4  (only first XCHAL_NCP_NUM_ATMPS needed)
 */
	.macro xchal_ncp_load  ptr at1 at2 at3 at4  continue=0 ofs=-1 select=XTHAL_SAS_ALL
	xchal_sa_start	\continue, \ofs
	.ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
	xchal_sa_align	\ptr, 0, 1024-4, 4, 4
	l32i	\at1, \ptr, .Lxchal_ofs_ + 0
	wsr	\at1, BR		// boolean option
	.set	.Lxchal_ofs_, .Lxchal_ofs_ + 4
	.endif
	.endm	// xchal_ncp_load



#define XCHAL_NCP_NUM_ATMPS	1



/* Macro to save the state of TIE coprocessor FPU.
 * Save area ptr (clobbered):  ptr  (16 byte aligned)
 * Scratch regs  (clobbered):  at1..at4  (only first XCHAL_CP0_NUM_ATMPS needed)
 */
#define xchal_cp_FPU_store	xchal_cp0_store
/* #define xchal_cp_FPU_store_a2	xchal_cp0_store a2 a3 a4 a5 a6 */
	.macro	xchal_cp0_store  ptr at1 at2 at3 at4  continue=0 ofs=-1 select=XTHAL_SAS_ALL
	xchal_sa_start \continue, \ofs
	.ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
	xchal_sa_align	\ptr, 0, 0, 1, 16
	rur232	\at1		// FCR
	s32i	\at1, \ptr, 0
	rur233	\at1		// FSR
	s32i	\at1, \ptr, 4
	SSI f0, \ptr,  8
	SSI f1, \ptr,  12
	SSI f2, \ptr,  16
	SSI f3, \ptr,  20
	SSI f4, \ptr,  24
	SSI f5, \ptr,  28
	SSI f6, \ptr,  32
	SSI f7, \ptr,  36
	SSI f8, \ptr,  40
	SSI f9, \ptr,  44
	SSI f10, \ptr,  48
	SSI f11, \ptr,  52
	SSI f12, \ptr,  56
	SSI f13, \ptr,  60
	SSI f14, \ptr,  64
	SSI f15, \ptr,  68
	.set	.Lxchal_ofs_, .Lxchal_ofs_ + 72
	.endif
	.endm	// xchal_cp0_store

/* Macro to restore the state of TIE coprocessor FPU.
 * Save area ptr (clobbered):  ptr  (16 byte aligned)
 * Scratch regs  (clobbered):  at1..at4  (only first XCHAL_CP0_NUM_ATMPS needed)
 */
#define xchal_cp_FPU_load	xchal_cp0_load
/* #define xchal_cp_FPU_load_a2	xchal_cp0_load a2 a3 a4 a5 a6 */
	.macro	xchal_cp0_load  ptr at1 at2 at3 at4  continue=0 ofs=-1 select=XTHAL_SAS_ALL
	xchal_sa_start \continue, \ofs
	.ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
	xchal_sa_align	\ptr, 0, 0, 1, 16
	l32i	\at1, \ptr, 0
	wur232	\at1		// FCR
	l32i	\at1, \ptr, 4
	wur233	\at1		// FSR
	LSI f0, \ptr,  8
	LSI f1, \ptr,  12
	LSI f2, \ptr,  16
	LSI f3, \ptr,  20
	LSI f4, \ptr,  24
	LSI f5, \ptr,  28
	LSI f6, \ptr,  32
	LSI f7, \ptr,  36
	LSI f8, \ptr,  40
	LSI f9, \ptr,  44
	LSI f10, \ptr,  48
	LSI f11, \ptr,  52
	LSI f12, \ptr,  56
	LSI f13, \ptr,  60
	LSI f14, \ptr,  64
	LSI f15, \ptr,  68
	.set	.Lxchal_ofs_, .Lxchal_ofs_ + 72
	.endif
	.endm	// xchal_cp0_load

#define XCHAL_CP0_NUM_ATMPS	1

/* Macro to save the state of TIE coprocessor XAD.
 * Save area ptr (clobbered):  ptr  (16 byte aligned)
 * Scratch regs  (clobbered):  at1..at4  (only first XCHAL_CP6_NUM_ATMPS needed)
 */
#define xchal_cp_XAD_store	xchal_cp6_store
/* #define xchal_cp_XAD_store_a2	xchal_cp6_store a2 a3 a4 a5 a6 */
	.macro	xchal_cp6_store  ptr at1 at2 at3 at4  continue=0 ofs=-1 select=XTHAL_SAS_ALL
	xchal_sa_start \continue, \ofs
	.ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
	xchal_sa_align	\ptr, 0, 0, 1, 16
	rur0	\at1		// LDCBHI
	s32i	\at1, \ptr, 0
	rur1	\at1		// LDCBLO
	s32i	\at1, \ptr, 4
	rur2	\at1		// STCBHI
	s32i	\at1, \ptr, 8
	rur3	\at1		// STCBLO
	s32i	\at1, \ptr, 12
	rur8	\at1		// LDBRBASE
	s32i	\at1, \ptr, 16
	rur9	\at1		// LDBROFF
	s32i	\at1, \ptr, 20
	rur10	\at1		// LDBRINC
	s32i	\at1, \ptr, 24
	rur11	\at1		// STBRBASE
	s32i	\at1, \ptr, 28
	rur12	\at1		// STBROFF
	s32i	\at1, \ptr, 32
	rur13	\at1		// STBRINC
	s32i	\at1, \ptr, 36
	rur24	\at1		// SCRATCH0
	s32i	\at1, \ptr, 40
	rur25	\at1		// SCRATCH1
	s32i	\at1, \ptr, 44
	rur26	\at1		// SCRATCH2
	s32i	\at1, \ptr, 48
	rur27	\at1		// SCRATCH3
	s32i	\at1, \ptr, 52
	WRAS128I wra0, \ptr,  64
	WRAS128I wra1, \ptr,  80
	WRAS128I wra2, \ptr,  96
	WRAS128I wra3, \ptr,  112
	WRAS128I wra4, \ptr,  128
	WRAS128I wra5, \ptr,  144
	WRAS128I wra6, \ptr,  160
	WRAS128I wra7, \ptr,  176
	WRAS128I wra8, \ptr,  192
	WRAS128I wra9, \ptr,  208
	WRAS128I wra10, \ptr,  224
	WRAS128I wra11, \ptr,  240
	WRAS128I wra12, \ptr,  256
	WRAS128I wra13, \ptr,  272
	WRAS128I wra14, \ptr,  288
	WRAS128I wra15, \ptr,  304
	WRBS128I wrb0, \ptr,  320
	WRBS128I wrb1, \ptr,  336
	WRBS128I wrb2, \ptr,  352
	WRBS128I wrb3, \ptr,  368
	WRBS128I wrb4, \ptr,  384
	WRBS128I wrb5, \ptr,  400
	WRBS128I wrb6, \ptr,  416
	WRBS128I wrb7, \ptr,  432
	WRBS128I wrb8, \ptr,  448
	WRBS128I wrb9, \ptr,  464
	WRBS128I wrb10, \ptr,  480
	WRBS128I wrb11, \ptr,  496
	WRBS128I wrb12, \ptr,  512
	WRBS128I wrb13, \ptr,  528
	WRBS128I wrb14, \ptr,  544
	WRBS128I wrb15, \ptr,  560
	.set	.Lxchal_ofs_, .Lxchal_ofs_ + 576
	.endif
	.endm	// xchal_cp6_store

/* Macro to restore the state of TIE coprocessor XAD.
 * Save area ptr (clobbered):  ptr  (16 byte aligned)
 * Scratch regs  (clobbered):  at1..at4  (only first XCHAL_CP6_NUM_ATMPS needed)
 */
#define xchal_cp_XAD_load	xchal_cp6_load
/* #define xchal_cp_XAD_load_a2	xchal_cp6_load a2 a3 a4 a5 a6 */
	.macro	xchal_cp6_load  ptr at1 at2 at3 at4  continue=0 ofs=-1 select=XTHAL_SAS_ALL
	xchal_sa_start \continue, \ofs
	.ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
	xchal_sa_align	\ptr, 0, 0, 1, 16
	l32i	\at1, \ptr, 0
	wur0	\at1		// LDCBHI
	l32i	\at1, \ptr, 4
	wur1	\at1		// LDCBLO
	l32i	\at1, \ptr, 8
	wur2	\at1		// STCBHI
	l32i	\at1, \ptr, 12
	wur3	\at1		// STCBLO
	l32i	\at1, \ptr, 16
	wur8	\at1		// LDBRBASE
	l32i	\at1, \ptr, 20
	wur9	\at1		// LDBROFF
	l32i	\at1, \ptr, 24
	wur10	\at1		// LDBRINC
	l32i	\at1, \ptr, 28
	wur11	\at1		// STBRBASE
	l32i	\at1, \ptr, 32
	wur12	\at1		// STBROFF
	l32i	\at1, \ptr, 36
	wur13	\at1		// STBRINC
	l32i	\at1, \ptr, 40
	wur24	\at1		// SCRATCH0
	l32i	\at1, \ptr, 44
	wur25	\at1		// SCRATCH1
	l32i	\at1, \ptr, 48
	wur26	\at1		// SCRATCH2
	l32i	\at1, \ptr, 52
	wur27	\at1		// SCRATCH3
	WRBL128I wrb0, \ptr,  320
	WRBL128I wrb1, \ptr,  336
	WRBL128I wrb2, \ptr,  352
	WRBL128I wrb3, \ptr,  368
	WRBL128I wrb4, \ptr,  384
	WRBL128I wrb5, \ptr,  400
	WRBL128I wrb6, \ptr,  416
	WRBL128I wrb7, \ptr,  432
	WRBL128I wrb8, \ptr,  448
	WRBL128I wrb9, \ptr,  464
	WRBL128I wrb10, \ptr,  480
	WRBL128I wrb11, \ptr,  496
	WRBL128I wrb12, \ptr,  512
	WRBL128I wrb13, \ptr,  528
	WRBL128I wrb14, \ptr,  544
	WRBL128I wrb15, \ptr,  560
	WRAL128I wra0, \ptr,  64
	WRAL128I wra1, \ptr,  80
	WRAL128I wra2, \ptr,  96
	WRAL128I wra3, \ptr,  112
	WRAL128I wra4, \ptr,  128
	WRAL128I wra5, \ptr,  144
	WRAL128I wra6, \ptr,  160
	WRAL128I wra7, \ptr,  176
	WRAL128I wra8, \ptr,  192
	WRAL128I wra9, \ptr,  208
	WRAL128I wra10, \ptr,  224
	WRAL128I wra11, \ptr,  240
	WRAL128I wra12, \ptr,  256
	WRAL128I wra13, \ptr,  272
	WRAL128I wra14, \ptr,  288
	WRAL128I wra15, \ptr,  304
	.set	.Lxchal_ofs_, .Lxchal_ofs_ + 576
	.endif
	.endm	// xchal_cp6_load

#define XCHAL_CP6_NUM_ATMPS	1
#define XCHAL_SA_NUM_ATMPS	1

	/*  Empty macros for unconfigured coprocessors:  */
	.macro xchal_cp1_store	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp1_load	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp2_store	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp2_load	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp3_store	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp3_load	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp4_store	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp4_load	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp5_store	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp5_load	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp7_store	p a b c d continue=0 ofs=-1 select=-1 ; .endm
	.macro xchal_cp7_load	p a b c d continue=0 ofs=-1 select=-1 ; .endm

#endif /*_XTENSA_CORE_TIE_ASM_H*/