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* 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*/
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