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linux-headers-5.4.0-113
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xtensa
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variants
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dc232b
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tie.h
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/* * This header file describes this specific Xtensa processor's TIE extensions * that extend basic Xtensa core functionality. 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) 1999-2007 Tensilica Inc. */ #ifndef _XTENSA_CORE_TIE_H #define _XTENSA_CORE_TIE_H #define XCHAL_CP_NUM 1 /* number of coprocessors */ #define XCHAL_CP_MAX 8 /* max CP ID + 1 (0 if none) */ #define XCHAL_CP_MASK 0x80 /* bitmask of all CPs by ID */ #define XCHAL_CP_PORT_MASK 0x80 /* bitmask of only port CPs */ /* Basic parameters of each coprocessor: */ #define XCHAL_CP7_NAME "XTIOP" #define XCHAL_CP7_IDENT XTIOP #define XCHAL_CP7_SA_SIZE 0 /* size of state save area */ #define XCHAL_CP7_SA_ALIGN 1 /* min alignment of save area */ #define XCHAL_CP_ID_XTIOP 7 /* coprocessor ID (0..7) */ /* Filler info for unassigned coprocessors, to simplify arrays etc: */ #define XCHAL_CP0_SA_SIZE 0 #define XCHAL_CP0_SA_ALIGN 1 #define XCHAL_CP1_SA_SIZE 0 #define XCHAL_CP1_SA_ALIGN 1 #define XCHAL_CP2_SA_SIZE 0 #define XCHAL_CP2_SA_ALIGN 1 #define XCHAL_CP3_SA_SIZE 0 #define XCHAL_CP3_SA_ALIGN 1 #define XCHAL_CP4_SA_SIZE 0 #define XCHAL_CP4_SA_ALIGN 1 #define XCHAL_CP5_SA_SIZE 0 #define XCHAL_CP5_SA_ALIGN 1 #define XCHAL_CP6_SA_SIZE 0 #define XCHAL_CP6_SA_ALIGN 1 /* Save area for non-coprocessor optional and custom (TIE) state: */ #define XCHAL_NCP_SA_SIZE 32 #define XCHAL_NCP_SA_ALIGN 4 /* Total save area for optional and custom state (NCP + CPn): */ #define XCHAL_TOTAL_SA_SIZE 32 /* with 16-byte align padding */ #define XCHAL_TOTAL_SA_ALIGN 4 /* actual minimum alignment */ /* * Detailed contents of save areas. * NOTE: caller must define the XCHAL_SA_REG macro (not defined here) * before expanding the XCHAL_xxx_SA_LIST() macros. * * XCHAL_SA_REG(s,ccused,abikind,kind,opt,name,galign,align,asize, * dbnum,base,regnum,bitsz,gapsz,reset,x...) * * s = passed from XCHAL_*_LIST(s), eg. to select how to expand * ccused = set if used by compiler without special options or code * abikind = 0 (caller-saved), 1 (callee-saved), or 2 (thread-global) * kind = 0 (special reg), 1 (TIE user reg), or 2 (TIE regfile reg) * opt = 0 (custom TIE extension or coprocessor), or 1 (optional reg) * name = lowercase reg name (no quotes) * galign = group byte alignment (power of 2) (galign >= align) * align = register byte alignment (power of 2) * asize = allocated size in bytes (asize*8 == bitsz + gapsz + padsz) * (not including any pad bytes required to galign this or next reg) * dbnum = unique target number f/debug (see <xtensa-libdb-macros.h>) * base = reg shortname w/o index (or sr=special, ur=TIE user reg) * regnum = reg index in regfile, or special/TIE-user reg number * bitsz = number of significant bits (regfile width, or ur/sr mask bits) * gapsz = intervening bits, if bitsz bits not stored contiguously * (padsz = pad bits at end [TIE regfile] or at msbits [ur,sr] of asize) * reset = register reset value (or 0 if undefined at reset) * x = reserved for future use (0 until then) * * To filter out certain registers, e.g. to expand only the non-global * registers used by the compiler, you can do something like this: * * #define XCHAL_SA_REG(s,ccused,p...) SELCC##ccused(p) * #define SELCC0(p...) * #define SELCC1(abikind,p...) SELAK##abikind(p) * #define SELAK0(p...) REG(p) * #define SELAK1(p...) REG(p) * #define SELAK2(p...) * #define REG(kind,tie,name,galn,aln,asz,csz,dbnum,base,rnum,bsz,rst,x...) \ * ...what you want to expand... */ #define XCHAL_NCP_SA_NUM 8 #define XCHAL_NCP_SA_LIST(s) \ XCHAL_SA_REG(s,1,0,0,1, acclo, 4, 4, 4,0x0210, sr,16 , 32,0,0,0) \ XCHAL_SA_REG(s,1,0,0,1, acchi, 4, 4, 4,0x0211, sr,17 , 8,0,0,0) \ XCHAL_SA_REG(s,0,0,0,1, m0, 4, 4, 4,0x0220, sr,32 , 32,0,0,0) \ XCHAL_SA_REG(s,0,0,0,1, m1, 4, 4, 4,0x0221, sr,33 , 32,0,0,0) \ XCHAL_SA_REG(s,0,0,0,1, m2, 4, 4, 4,0x0222, sr,34 , 32,0,0,0) \ XCHAL_SA_REG(s,0,0,0,1, m3, 4, 4, 4,0x0223, sr,35 , 32,0,0,0) \ XCHAL_SA_REG(s,0,0,0,1, scompare1, 4, 4, 4,0x020C, sr,12 , 32,0,0,0) \ XCHAL_SA_REG(s,1,2,1,1, threadptr, 4, 4, 4,0x03E7, ur,231, 32,0,0,0) #define XCHAL_CP0_SA_NUM 0 #define XCHAL_CP0_SA_LIST(s) /* empty */ #define XCHAL_CP1_SA_NUM 0 #define XCHAL_CP1_SA_LIST(s) /* empty */ #define XCHAL_CP2_SA_NUM 0 #define XCHAL_CP2_SA_LIST(s) /* empty */ #define XCHAL_CP3_SA_NUM 0 #define XCHAL_CP3_SA_LIST(s) /* empty */ #define XCHAL_CP4_SA_NUM 0 #define XCHAL_CP4_SA_LIST(s) /* empty */ #define XCHAL_CP5_SA_NUM 0 #define XCHAL_CP5_SA_LIST(s) /* empty */ #define XCHAL_CP6_SA_NUM 0 #define XCHAL_CP6_SA_LIST(s) /* empty */ #define XCHAL_CP7_SA_NUM 0 #define XCHAL_CP7_SA_LIST(s) /* empty */ /* Byte length of instruction from its first nibble (op0 field), per FLIX. */ #define XCHAL_OP0_FORMAT_LENGTHS 3,3,3,3,3,3,3,3,2,2,2,2,2,2,3,3 #endif /*_XTENSA_CORE_TIE_H*/