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+/* Copyright (C) 1997, 1998, 2002, 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ralf Baechle <ralf@gnu.org>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _SYS_ASM_H
+#define _SYS_ASM_H
+
+#include <sgidefs.h>
+
+#ifndef CAT
+# ifdef __STDC__
+# define __CAT(str1,str2) str1##str2
+# else
+# define __CAT(str1,str2) str1/**/str2
+# endif
+# define CAT(str1,str2) __CAT(str1,str2)
+#endif
+
+/*
+ * Macros to handle different pointer/register sizes for 32/64-bit code
+ *
+ * 64 bit address space isn't used yet, so we may use the R3000 32 bit
+ * defines for now.
+ */
+#if (_MIPS_SIM == _MIPS_SIM_ABI32) || (_MIPS_SIM == _MIPS_SIM_NABI32)
+# define PTR .word
+# define PTRSIZE 4
+# define PTRLOG 2
+#elif (_MIPS_SIM == _MIPS_SIM_ABI64)
+# define PTR .dword
+# define PTRSIZE 8
+# define PTRLOG 3
+#endif
+
+/*
+ * PIC specific declarations
+ */
+#if (_MIPS_SIM == _MIPS_SIM_ABI32)
+# ifdef __PIC__
+# define CPRESTORE(register) \
+ .cprestore register
+# define CPLOAD(register) \
+ .cpload register
+# else
+# define CPRESTORE(register)
+# define CPLOAD(register)
+# endif
+
+# define CPADD(register) \
+ .cpadd register
+
+/*
+ * Set gp when at 1st instruction
+ */
+# define SETUP_GP \
+ .set noreorder; \
+ .cpload $25; \
+ .set reorder
+/* Set gp when not at 1st instruction */
+# define SETUP_GPX(r) \
+ .set noreorder; \
+ move r, $31; /* Save old ra. */ \
+ bal 10f; /* Find addr of cpload. */ \
+ nop; \
+10: \
+ .cpload $31; \
+ move $31, r; \
+ .set reorder
+# define SETUP_GPX_L(r, l) \
+ .set noreorder; \
+ move r, $31; /* Save old ra. */ \
+ bal l; /* Find addr of cpload. */ \
+ nop; \
+l: \
+ .cpload $31; \
+ move $31, r; \
+ .set reorder
+# define SAVE_GP(x) \
+ .cprestore x /* Save gp trigger t9/jalr conversion. */
+# define SETUP_GP64(a, b)
+# define SETUP_GPX64(a, b)
+# define SETUP_GPX64_L(cp_reg, ra_save, l)
+# define RESTORE_GP64
+# define USE_ALT_CP(a)
+#else /* (_MIPS_SIM == _MIPS_SIM_ABI64) || (_MIPS_SIM == _MIPS_SIM_NABI32) */
+/*
+ * For callee-saved gp calling convention:
+ */
+# define SETUP_GP
+# define SETUP_GPX(r)
+# define SETUP_GPX_L(r, l)
+# define SAVE_GP(x)
+
+# define SETUP_GP64(gpoffset, proc) \
+ .cpsetup $25, gpoffset, proc
+# define SETUP_GPX64(cp_reg, ra_save) \
+ move ra_save, $31; /* Save old ra. */ \
+ .set noreorder; \
+ bal 10f; /* Find addr of .cpsetup. */ \
+ nop; \
+10: \
+ .set reorder; \
+ .cpsetup $31, cp_reg, 10b; \
+ move $31, ra_save
+# define SETUP_GPX64_L(cp_reg, ra_save, l) \
+ move ra_save, $31; /* Save old ra. */ \
+ .set noreorder; \
+ bal l; /* Find addr of .cpsetup. */ \
+ nop; \
+l: \
+ .set reorder; \
+ .cpsetup $31, cp_reg, l; \
+ move $31, ra_save
+# define RESTORE_GP64 \
+ .cpreturn
+/* Use alternate register for context pointer. */
+# define USE_ALT_CP(reg) \
+ .cplocal reg
+#endif /* _MIPS_SIM != _MIPS_SIM_ABI32 */
+
+/*
+ * Stack Frame Definitions
+ */
+#if (_MIPS_SIM == _MIPS_SIM_ABI32)
+# define NARGSAVE 4 /* Space for 4 argument registers must be allocated. */
+#endif
+#if (_MIPS_SIM == _MIPS_SIM_ABI64 || _MIPS_SIM == _MIPS_SIM_NABI32)
+# define NARGSAVE 0 /* No caller responsibilities. */
+#endif
+
+
+/*
+ * LEAF - declare leaf routine
+ */
+#define LEAF(symbol) \
+ .globl symbol; \
+ .align 2; \
+ .type symbol,@function; \
+ .ent symbol,0; \
+symbol: .frame sp,0,ra
+
+/*
+ * NESTED - declare nested routine entry point
+ */
+#define NESTED(symbol, framesize, rpc) \
+ .globl symbol; \
+ .align 2; \
+ .type symbol,@function; \
+ .ent symbol,0; \
+symbol: .frame sp, framesize, rpc
+
+/*
+ * END - mark end of function
+ */
+#ifndef END
+# define END(function) \
+ .end function; \
+ .size function,.-function
+#endif
+
+/*
+ * EXPORT - export definition of symbol
+ */
+#define EXPORT(symbol) \
+ .globl symbol; \
+symbol:
+
+/*
+ * ABS - export absolute symbol
+ */
+#define ABS(symbol,value) \
+ .globl symbol; \
+symbol = value
+
+#define PANIC(msg) \
+ .set push; \
+ .set reorder; \
+ la a0,8f; \
+ jal panic; \
+9: b 9b; \
+ .set pop; \
+ TEXT(msg)
+
+/*
+ * Print formated string
+ */
+#define PRINT(string) \
+ .set push; \
+ .set reorder; \
+ la a0,8f; \
+ jal printk; \
+ .set pop; \
+ TEXT(string)
+
+#define TEXT(msg) \
+ .data; \
+8: .asciiz msg; \
+ .previous;
+
+/*
+ * Build text tables
+ */
+#define TTABLE(string) \
+ .text; \
+ .word 1f; \
+ .previous; \
+ .data; \
+1: .asciz string; \
+ .previous
+
+/*
+ * MIPS IV pref instruction.
+ * Use with .set noreorder only!
+ *
+ * MIPS IV implementations are free to treat this as a nop. The R5000
+ * is one of them. So we should have an option not to use this instruction.
+ */
+#if (_MIPS_ISA == _MIPS_ISA_MIPS4) || (_MIPS_ISA == _MIPS_ISA_MIPS5) || \
+ (_MIPS_ISA == _MIPS_ISA_MIPS32) || (_MIPS_ISA == _MIPS_ISA_MIPS64)
+# define PREF(hint,addr) \
+ pref hint,addr
+# define PREFX(hint,addr) \
+ prefx hint,addr
+#else
+# define PREF
+# define PREFX
+#endif
+
+/*
+ * MIPS ISA IV/V movn/movz instructions and equivalents for older CPUs.
+ */
+#if _MIPS_ISA == _MIPS_ISA_MIPS1
+# define MOVN(rd,rs,rt) \
+ .set push; \
+ .set reorder; \
+ beqz rt,9f; \
+ move rd,rs; \
+ .set pop; \
+9:
+# define MOVZ(rd,rs,rt) \
+ .set push; \
+ .set reorder; \
+ bnez rt,9f; \
+ move rd,rt; \
+ .set pop; \
+9:
+#endif /* _MIPS_ISA == _MIPS_ISA_MIPS1 */
+#if (_MIPS_ISA == _MIPS_ISA_MIPS2) || (_MIPS_ISA == _MIPS_ISA_MIPS3)
+# define MOVN(rd,rs,rt) \
+ .set push; \
+ .set noreorder; \
+ bnezl rt,9f; \
+ move rd,rs; \
+ .set pop; \
+9:
+# define MOVZ(rd,rs,rt) \
+ .set push; \
+ .set noreorder; \
+ beqzl rt,9f; \
+ movz rd,rs; \
+ .set pop; \
+9:
+#endif /* (_MIPS_ISA == _MIPS_ISA_MIPS2) || (_MIPS_ISA == _MIPS_ISA_MIPS3) */
+#if (_MIPS_ISA == _MIPS_ISA_MIPS4) || (_MIPS_ISA == _MIPS_ISA_MIPS5) || \
+ (_MIPS_ISA == _MIPS_ISA_MIPS32) || (_MIPS_ISA == _MIPS_ISA_MIPS64)
+# define MOVN(rd,rs,rt) \
+ movn rd,rs,rt
+# define MOVZ(rd,rs,rt) \
+ movz rd,rs,rt
+#endif /* (_MIPS_ISA == _MIPS_ISA_MIPS4) || (_MIPS_ISA == _MIPS_ISA_MIPS5) */
+
+/*
+ * Stack alignment
+ */
+#if (_MIPS_SIM == _MIPS_SIM_ABI64) || (_MIPS_SIM == _MIPS_SIM_NABI32)
+# define ALSZ 15
+# define ALMASK ~15
+#else
+# define ALSZ 7
+# define ALMASK ~7
+#endif
+
+/*
+ * Size of a register
+ */
+#if (_MIPS_SIM == _MIPS_SIM_ABI64) || (_MIPS_SIM == _MIPS_SIM_NABI32)
+# define SZREG 8
+#else
+# define SZREG 4
+#endif
+
+/*
+ * Use the following macros in assemblercode to load/store registers,
+ * pointers etc.
+ */
+#if (SZREG == 4)
+# define REG_S sw
+# define REG_L lw
+#else
+# define REG_S sd
+# define REG_L ld
+#endif
+
+/*
+ * How to add/sub/load/store/shift C int variables.
+ */
+#if (_MIPS_SZINT == 32)
+# define INT_ADD add
+# define INT_ADDI addi
+# define INT_ADDU addu
+# define INT_ADDIU addiu
+# define INT_SUB add
+# define INT_SUBI subi
+# define INT_SUBU subu
+# define INT_SUBIU subu
+# define INT_L lw
+# define INT_S sw
+#endif
+
+#if (_MIPS_SZINT == 64)
+# define INT_ADD dadd
+# define INT_ADDI daddi
+# define INT_ADDU daddu
+# define INT_ADDIU daddiu
+# define INT_SUB dadd
+# define INT_SUBI dsubi
+# define INT_SUBU dsubu
+# define INT_SUBIU dsubu
+# define INT_L ld
+# define INT_S sd
+#endif
+
+/*
+ * How to add/sub/load/store/shift C long variables.
+ */
+#if (_MIPS_SZLONG == 32)
+# define LONG_ADD add
+# define LONG_ADDI addi
+# define LONG_ADDU addu
+# define LONG_ADDIU addiu
+# define LONG_SUB add
+# define LONG_SUBI subi
+# define LONG_SUBU subu
+# define LONG_SUBIU subu
+# define LONG_L lw
+# define LONG_S sw
+# define LONG_SLL sll
+# define LONG_SLLV sllv
+# define LONG_SRL srl
+# define LONG_SRLV srlv
+# define LONG_SRA sra
+# define LONG_SRAV srav
+#endif
+
+#if (_MIPS_SZLONG == 64)
+# define LONG_ADD dadd
+# define LONG_ADDI daddi
+# define LONG_ADDU daddu
+# define LONG_ADDIU daddiu
+# define LONG_SUB dadd
+# define LONG_SUBI dsubi
+# define LONG_SUBU dsubu
+# define LONG_SUBIU dsubu
+# define LONG_L ld
+# define LONG_S sd
+# define LONG_SLL dsll
+# define LONG_SLLV dsllv
+# define LONG_SRL dsrl
+# define LONG_SRLV dsrlv
+# define LONG_SRA dsra
+# define LONG_SRAV dsrav
+#endif
+
+/*
+ * How to add/sub/load/store/shift pointers.
+ */
+#if (_MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 32)
+# define PTR_ADD add
+# define PTR_ADDI addi
+# define PTR_ADDU addu
+# define PTR_ADDIU addiu
+# define PTR_SUB add
+# define PTR_SUBI subi
+# define PTR_SUBU subu
+# define PTR_SUBIU subu
+# define PTR_L lw
+# define PTR_LA la
+# define PTR_S sw
+# define PTR_SLL sll
+# define PTR_SLLV sllv
+# define PTR_SRL srl
+# define PTR_SRLV srlv
+# define PTR_SRA sra
+# define PTR_SRAV srav
+
+# define PTR_SCALESHIFT 2
+#endif
+
+#if _MIPS_SIM == _MIPS_SIM_NABI32
+# define PTR_ADD add
+# define PTR_ADDI addi
+# define PTR_ADDU add /* no u */
+# define PTR_ADDIU addi /* no u */
+# define PTR_SUB add
+# define PTR_SUBI subi
+# define PTR_SUBU sub /* no u */
+# define PTR_SUBIU sub /* no u */
+# define PTR_L lw
+# define PTR_LA la
+# define PTR_S sw
+# define PTR_SLL sll
+# define PTR_SLLV sllv
+# define PTR_SRL srl
+# define PTR_SRLV srlv
+# define PTR_SRA sra
+# define PTR_SRAV srav
+
+# define PTR_SCALESHIFT 2
+#endif
+
+#if (_MIPS_SIM == _MIPS_SIM_ABI32 && _MIPS_SZPTR == 64 /* o64??? */) \
+ || _MIPS_SIM == _MIPS_SIM_ABI64
+# define PTR_ADD dadd
+# define PTR_ADDI daddi
+# define PTR_ADDU daddu
+# define PTR_ADDIU daddiu
+# define PTR_SUB dadd
+# define PTR_SUBI dsubi
+# define PTR_SUBU dsubu
+# define PTR_SUBIU dsubu
+# define PTR_L ld
+# define PTR_LA dla
+# define PTR_S sd
+# define PTR_SLL dsll
+# define PTR_SLLV dsllv
+# define PTR_SRL dsrl
+# define PTR_SRLV dsrlv
+# define PTR_SRA dsra
+# define PTR_SRAV dsrav
+
+# define PTR_SCALESHIFT 3
+#endif
+
+/*
+ * Some cp0 registers were extended to 64bit for MIPS III.
+ */
+#if (_MIPS_ISA == _MIPS_ISA_MIPS1) || (_MIPS_ISA == _MIPS_ISA_MIPS2) || \
+ (_MIPS_ISA == _MIPS_ISA_MIPS32)
+# define MFC0 mfc0
+# define MTC0 mtc0
+#endif
+#if (_MIPS_ISA == _MIPS_ISA_MIPS3) || (_MIPS_ISA == _MIPS_ISA_MIPS4) || \
+ (_MIPS_ISA == _MIPS_ISA_MIPS5) || (_MIPS_ISA == _MIPS_ISA_MIPS64)
+# define MFC0 dmfc0
+# define MTC0 dmtc0
+#endif
+
+#endif /* sys/asm.h */