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binutils-gdb/gdb/csky-tdep.h
Jiangshuai Li e3940312c1 gdb:csky add pseudo regs for float and vector regs 
In the existing CSKY architecture, there are at most 32 floating
and 16 vector registers. Float registers's count can be configured
as 16 or 32. In the future, the vector registers's count may be
extended to 32.

The bit width of floating-point register is 64bits, and the bit
width of vector register is 128bit.

Special points: in fr0~fr15 and vr0~vr15, each FRx is the lower
64 bits of the corresponding VRx.

Here, we will split each floating-point and vector register to
32bits wide, add the corresponding pseudo registers, and finally
use them for the dwarf registers.

There are 128 pseudo registers in total, s0~s127, including:
1. s0 and s1 correspond to fr0, s4 and s5 correspond to fr1, and so on.
Every two separated pseudo registers correspond to a float register.
2. s0, s1, s2 and s3 correspond to vr0; s4, s5, s6 and s7 correspond to vr1,
and so on. Every four pseudo registers corresponds to a vector register.

Therefore, in s64~s127, there are general registers that are not actually
used. This part is to prepare for the expansion of vector registers to 32

Therefore, in s64~s127, half of the registers are actually unused. This
part is to prepare for the expansion of the vector register to 32.
2022-06-28 11:05:30 +08:00

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/* Target-dependent code for the CSKY architecture, for GDB.
Copyright (C) 2010-2022 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef CSKY_TDEP_H
#define CSKY_TDEP_H
#include "gdbarch.h"
/* How to interpret the contents of the link register. */
enum lr_type_t
{
LR_TYPE_R15,
LR_TYPE_EPC,
LR_TYPE_FPC
};
/* Target-dependent structure in gdbarch. */
struct csky_gdbarch_tdep : gdbarch_tdep
{
/* Save FPU, VDSP ABI. */
unsigned int fpu_abi;
unsigned int fpu_hardfp;
unsigned int vdsp_version;
/* Save fv_pseudo_registers_count. */
unsigned int has_vr0;
unsigned int fv_pseudo_registers_count;
};
/* Instruction sizes. */
enum csky_insn_size_t
{
CSKY_INSN_SIZE16 = 2,
CSKY_INSN_SIZE32 = 4
};
/* CSKY register numbers. */
enum csky_regnum
{
CSKY_R0_REGNUM = 0, /* General registers. */
CSKY_R15_REGNUM = 15,
CSKY_HI_REGNUM = 36,
CSKY_LO_REGNUM = 37,
CSKY_PC_REGNUM = 72,
CSKY_AR0_REGNUM = 73,
CSKY_CR0_REGNUM = 89,
CSKY_VBR_REGNUM = CSKY_CR0_REGNUM + 1,
CSKY_EPSR_REGNUM = CSKY_CR0_REGNUM + 2,
CSKY_FPSR_REGNUM = CSKY_CR0_REGNUM + 3,
CSKY_EPC_REGNUM = CSKY_CR0_REGNUM + 4,
CSKY_FPC_REGNUM = CSKY_CR0_REGNUM + 5,
/* Float register 0. */
CSKY_FR0_REGNUM = 40,
CSKY_FR16_REGNUM = 1172,
CSKY_FCR_REGNUM = 121,
CSKY_MMU_REGNUM = 128,
CSKY_PROFCR_REGNUM = 140,
CSKY_PROFGR_REGNUM = 144,
CSKY_FP_REGNUM = 8,
/* Vector register 0. */
CSKY_VR0_REGNUM = 56,
/* m32r calling convention. */
CSKY_SP_REGNUM = CSKY_R0_REGNUM + 14,
CSKY_RET_REGNUM = CSKY_R0_REGNUM,
/* Argument registers. */
CSKY_ABI_A0_REGNUM = 0,
CSKY_ABI_LAST_ARG_REGNUM = 3,
/* Link register, r15. */
CSKY_LR_REGNUM = CSKY_R15_REGNUM,
/* Processor status register, cr0. */
CSKY_PSR_REGNUM = CSKY_CR0_REGNUM,
CSKY_MAX_REGISTER_SIZE = 16,
CSKY_MAX_REGS = 253
};
/* ICE registers. */
#define CSKY_CRBANK_NUM_REGS 32
/* Tdesc registers essential check. */
#define CSKY_TDESC_REGS_PC_NUMBERED (1 << 0)
#define CSKY_TDESC_REGS_SP_NUMBERED (1 << 1)
#define CSKY_TDESC_REGS_LR_NUMBERED (1 << 2)
#define CSKY_TDESC_REGS_ESSENTIAL_VALUE (7)
/* For fr0~fr15, fr16~fr31, vr0~vr15 check. */
#define CSKY_FULL16_ONEHOT_VALUE 0xffff
/* Number of processor registers w/o ICE registers. */
#define CSKY_NUM_REGS (CSKY_MAX_REGS - CSKY_CRBANK_NUM_REGS)
/* size. */
#define CSKY_16_ST_SIZE(insn) (1 << ((insn & 0x1800) >> 11))
/* rx. */
#define CSKY_16_ST_ADDR_REGNUM(insn) ((insn & 0x700) >> 8)
/* disp. */
#define CSKY_16_ST_OFFSET(insn) ((insn & 0x1f) << ((insn & 0x1800) >> 11))
/* ry. */
#define CSKY_16_ST_VAL_REGNUM(insn) ((insn & 0xe0) >> 5)
/* st16.w rz, (sp, disp). */
#define CSKY_16_IS_STWx0(insn) ((insn & 0xf800) == 0xb800)
#define CSKY_16_STWx0_VAL_REGNUM(insn) CSKY_16_ST_ADDR_REGNUM (insn)
/* disp. */
#define CSKY_16_STWx0_OFFSET(insn) \
((((insn & 0x700) >> 3) + (insn & 0x1f)) << 2)
/* Check ld16 but not ld16 sp. */
#define CSKY_16_IS_LD(insn) \
(((insn & 0xe000) == 0x8000) && (insn & 0x1800) != 0x1800)
/* size. */
#define CSKY_16_LD_SIZE(insn) CSKY_16_ST_SIZE (insn)
/* rx. */
#define CSKY_16_LD_ADDR_REGNUM(insn) CSKY_16_ST_ADDR_REGNUM (insn)
/* disp. */
#define CSKY_16_LD_OFFSET(insn) CSKY_16_ST_OFFSET (insn)
/* ld16.w rz,(sp,disp). */
#define CSKY_16_IS_LDWx0(insn) ((insn & 0xf800) == 0x9800)
/*disp. */
#define CSKY_16_LDWx0_OFFSET(insn) CSKY_16_STWx0_OFFSET (insn)
/* st32.b/h/w/d. */
#define CSKY_32_IS_ST(insn) ((insn & 0xfc00c000) == 0xdc000000)
/* size: b/h/w/d. */
#define CSKY_32_ST_SIZE(insn) (1 << ((insn & 0x3000) >> 12))
/* rx. */
#define CSKY_32_ST_ADDR_REGNUM(insn) ((insn & 0x001f0000) >> 16)
/* disp. */
#define CSKY_32_ST_OFFSET(insn) ((insn & 0xfff) << ((insn & 0x3000) >> 12))
/* ry. */
#define CSKY_32_ST_VAL_REGNUM(insn) ((insn & 0x03e00000) >> 21)
/* stw ry, (sp, disp). */
#define CSKY_32_IS_STWx0(insn) ((insn & 0xfc1ff000) == 0xdc0e2000)
/* stm32 ry-rz, (rx). */
#define CSKY_32_IS_STM(insn) ((insn & 0xfc00ffe0) == 0xd4001c20)
/* rx. */
#define CSKY_32_STM_ADDR_REGNUM(insn) CSKY_32_ST_ADDR_REGNUM (insn)
/* Count of registers. */
#define CSKY_32_STM_SIZE(insn) (insn & 0x1f)
/* ry. */
#define CSKY_32_STM_VAL_REGNUM(insn) ((insn & 0x03e00000) >> 21)
/* stm32 ry-rz, (sp). */
#define CSKY_32_IS_STMx0(insn) ((insn & 0xfc1fffe0) == 0xd40e1c20)
/* str32.b/h/w rz, (rx, ry << offset). */
#define CSKY_32_IS_STR(insn) \
(((insn & 0xfc000000) == 0xd4000000) && !(CSKY_32_IS_STM (insn)))
/* rx. */
#define CSKY_32_STR_X_REGNUM(insn) CSKY_32_ST_ADDR_REGNUM (insn)
/* ry. */
#define CSKY_32_STR_Y_REGNUM(insn) ((insn >> 21) & 0x1f)
/* size: b/h/w. */
#define CSKY_32_STR_SIZE(insn) (1 << ((insn & 0x0c00) >> 10))
/* imm (for rx + ry * imm). */
#define CSKY_32_STR_OFFSET(insn) ((insn & 0x000003e0) >> 5)
/* stex32.w rz, (rx, disp). */
#define CSKY_32_IS_STEX(insn) ((insn & 0xfc00f000) == 0xdc007000)
/* rx. */
#define CSKY_32_STEX_ADDR_REGNUM(insn) ((insn & 0x1f0000) >> 16)
/* disp. */
#define CSKY_32_STEX_OFFSET(insn) ((insn & 0x0fff) << 2)
/* ld.b/h/w. */
#define CSKY_32_IS_LD(insn) ((insn & 0xfc00c000) == 0xd8000000)
/* size. */
#define CSKY_32_LD_SIZE(insn) CSKY_32_ST_SIZE (insn)
/* rx. */
#define CSKY_32_LD_ADDR_REGNUM(insn) CSKY_32_ST_ADDR_REGNUM (insn)
/* disp. */
#define CSKY_32_LD_OFFSET(insn) CSKY_32_ST_OFFSET (insn)
#define CSKY_32_IS_LDM(insn) ((insn & 0xfc00ffe0) == 0xd0001c20)
/* rx. */
#define CSKY_32_LDM_ADDR_REGNUM(insn) CSKY_32_STM_ADDR_REGNUM (insn)
/* Count of registers. */
#define CSKY_32_LDM_SIZE(insn) CSKY_32_STM_SIZE (insn)
/* ldr32.b/h/w rz, (rx, ry << offset). */
#define CSKY_32_IS_LDR(insn) \
(((insn & 0xfc00fe00) == 0xd0000000) && !(CSKY_32_IS_LDM (insn)))
/* rx. */
#define CSKY_32_LDR_X_REGNUM(insn) CSKY_32_STR_X_REGNUM (insn)
/* ry. */
#define CSKY_32_LDR_Y_REGNUM(insn) CSKY_32_STR_Y_REGNUM (insn)
/* size: b/h/w. */
#define CSKY_32_LDR_SIZE(insn) CSKY_32_STR_SIZE (insn)
/* imm (for rx + ry*imm). */
#define CSKY_32_LDR_OFFSET(insn) CSKY_32_STR_OFFSET (insn)
#define CSKY_32_IS_LDEX(insn) ((insn & 0xfc00f000) == 0xd8007000)
/* rx. */
#define CSKY_32_LDEX_ADDR_REGNUM(insn) CSKY_32_STEX_ADDR_REGNUM (insn)
/* disp. */
#define CSKY_32_LDEX_OFFSET(insn) CSKY_32_STEX_OFFSET (insn)
/* subi.sp sp, disp. */
#define CSKY_16_IS_SUBI0(insn) ((insn & 0xfce0) == 0x1420)
/* disp. */
#define CSKY_16_SUBI_IMM(insn) ((((insn & 0x300) >> 3) + (insn & 0x1f)) << 2)
/* subi32 sp,sp,oimm12. */
#define CSKY_32_IS_SUBI0(insn) ((insn & 0xfffff000) == 0xe5ce1000)
/* oimm12. */
#define CSKY_32_SUBI_IMM(insn) ((insn & 0xfff) + 1)
/* push16. */
#define CSKY_16_IS_PUSH(insn) ((insn & 0xffe0) == 0x14c0)
#define CSKY_16_IS_PUSH_R15(insn) ((insn & 0x10) == 0x10)
#define CSKY_16_PUSH_LIST1(insn) (insn & 0xf) /* r4 - r11. */
/* pop16. */
#define CSKY_16_IS_POP(insn) ((insn & 0xffe0) == 0x1480)
#define CSKY_16_IS_POP_R15(insn) CSKY_16_IS_PUSH_R15 (insn)
#define CSKY_16_POP_LIST1(insn) CSKY_16_PUSH_LIST1 (insn) /* r4 - r11. */
/* push32. */
#define CSKY_32_IS_PUSH(insn) ((insn & 0xfffffe00) == 0xebe00000)
#define CSKY_32_IS_PUSH_R29(insn) ((insn & 0x100) == 0x100)
#define CSKY_32_IS_PUSH_R15(insn) ((insn & 0x10) == 0x10)
#define CSKY_32_PUSH_LIST1(insn) (insn & 0xf) /* r4 - r11. */
#define CSKY_32_PUSH_LIST2(insn) ((insn & 0xe0) >> 5) /* r16 - r17. */
/* pop32. */
#define CSKY_32_IS_POP(insn) ((insn & 0xfffffe00) == 0xebc00000)
#define CSKY_32_IS_POP_R29(insn) CSKY_32_IS_PUSH_R29 (insn)
#define CSKY_32_IS_POP_R15(insn) CSKY_32_IS_PUSH_R15 (insn)
#define CSKY_32_POP_LIST1(insn) CSKY_32_PUSH_LIST1 (insn) /* r4 - r11. */
#define CSKY_32_POP_LIST2(insn) CSKY_32_PUSH_LIST2 (insn) /* r16 - r17. */
/* Adjust sp by r4(l0). */
/* lrw r4, literal. */
#define CSKY_16_IS_LRW4(x) (((x) &0xfce0) == 0x1080)
/* movi r4, imm8. */
#define CSKY_16_IS_MOVI4(x) (((x) &0xff00) == 0x3400)
/* addi r4, oimm8. */
#define CSKY_16_IS_ADDI4(x) (((x) &0xff00) == 0x2400)
/* subi r4, oimm8. */
#define CSKY_16_IS_SUBI4(x) (((x) &0xff00) == 0x2c00)
/* nor16 r4, r4. */
#define CSKY_16_IS_NOR4(x) ((x) == 0x6d12)
/* lsli r4, r4, imm5. */
#define CSKY_16_IS_LSLI4(x) (((x) &0xffe0) == 0x4480)
/* bseti r4, imm5. */
#define CSKY_16_IS_BSETI4(x) (((x) &0xffe0) == 0x3ca0)
/* bclri r4, imm5. */
#define CSKY_16_IS_BCLRI4(x) (((x) &0xffe0) == 0x3c80)
/* subu sp, r4. */
#define CSKY_16_IS_SUBU4(x) ((x) == 0x6392)
#define CSKY_16_IS_R4_ADJUSTER(x) \
(CSKY_16_IS_ADDI4 (x) || CSKY_16_IS_SUBI4 (x) || CSKY_16_IS_BSETI4 (x) \
|| CSKY_16_IS_BCLRI4 (x) || CSKY_16_IS_NOR4 (x) || CSKY_16_IS_LSLI4 (x))
/* lrw r4, literal. */
#define CSKY_32_IS_LRW4(x) (((x) &0xffff0000) == 0xea840000)
/* movi r4, imm16. */
#define CSKY_32_IS_MOVI4(x) (((x) &0xffff0000) == 0xea040000)
/* movih r4, imm16. */
#define CSKY_32_IS_MOVIH4(x) (((x) &0xffff0000) == 0xea240000)
/* bmaski r4, oimm5. */
#define CSKY_32_IS_BMASKI4(x) (((x) &0xfc1fffff) == 0xc4005024)
/* addi r4, r4, oimm12. */
#define CSKY_32_IS_ADDI4(x) (((x) &0xfffff000) == 0xe4840000)
/* subi r4, r4, oimm12. */
#define CSKY_32_IS_SUBI4(x) (((x) &0xfffff000) == 0xe4810000)
/* nor32 r4, r4, r4. */
#define CSKY_32_IS_NOR4(x) ((x) == 0xc4842484)
/* rotli r4, r4, imm5. */
#define CSKY_32_IS_ROTLI4(x) (((x) &0xfc1fffff) == 0xc4044904)
/* lsli r4, r4, imm5. */
#define CSKY_32_IS_LISI4(x) (((x) &0xfc1fffff) == 0xc4044824)
/* bseti32 r4, r4, imm5. */
#define CSKY_32_IS_BSETI4(x) (((x) &0xfc1fffff) == 0xc4042844)
/* bclri32 r4, r4, imm5. */
#define CSKY_32_IS_BCLRI4(x) (((x) &0xfc1fffff) == 0xc4042824)
/* ixh r4, r4, r4. */
#define CSKY_32_IS_IXH4(x) ((x) == 0xc4840824)
/* ixw r4, r4, r4. */
#define CSKY_32_IS_IXW4(x) ((x) == 0xc4840844)
/* subu32 sp, sp, r4. */
#define CSKY_32_IS_SUBU4(x) ((x) == 0xc48e008e)
#define CSKY_32_IS_R4_ADJUSTER(x) \
(CSKY_32_IS_ADDI4 (x) || CSKY_32_IS_SUBI4 (x) || CSKY_32_IS_ROTLI4 (x) \
|| CSKY_32_IS_IXH4 (x) || CSKY_32_IS_IXW4 (x) || CSKY_32_IS_NOR4 (x) \
|| CSKY_32_IS_BSETI4 (x) || CSKY_32_IS_BCLRI4 (x) || CSKY_32_IS_LISI4 (x))
#define CSKY_IS_R4_ADJUSTER(x) \
(CSKY_32_IS_R4_ADJUSTER (x) || CSKY_16_IS_R4_ADJUSTER (x))
#define CSKY_IS_SUBU4(x) (CSKY_32_IS_SUBU4 (x) || CSKY_16_IS_SUBU4 (x))
/* mfcr rz, epsr. */
#define CSKY_32_IS_MFCR_EPSR(insn) ((insn & 0xffffffe0) == 0xc0026020)
/* mfcr rz, fpsr. */
#define CSKY_32_IS_MFCR_FPSR(insn) ((insn & 0xffffffe0) == 0xc0036020)
/* mfcr rz, epc. */
#define CSKY_32_IS_MFCR_EPC(insn) ((insn & 0xffffffe0) == 0xc0046020)
/* mfcr rz, fpc. */
#define CSKY_32_IS_MFCR_FPC(insn) ((insn & 0xffffffe0) == 0xc0056020)
#define CSKY_32_IS_RTE(insn) (insn == 0xc0004020)
#define CSKY_32_IS_RFI(insn) (insn == 0xc0004420)
#define CSKY_32_IS_JMP(insn) ((insn & 0xffe0ffff) == 0xe8c00000)
#define CSKY_16_IS_JMP(insn) ((insn & 0xffc3) == 0x7800)
#define CSKY_32_IS_JMPI(insn) ((insn & 0xffff0000) == 0xeac00000)
#define CSKY_32_IS_JMPIX(insn) ((insn & 0xffe0fffc) == 0xe9e00000)
#define CSKY_16_IS_JMPIX(insn) ((insn & 0xf8fc) == 0x38e0)
#define CSKY_16_IS_BR(insn) ((insn & 0xfc00) == 0x0400)
#define CSKY_32_IS_BR(insn) ((insn & 0xffff0000) == 0xe8000000)
#define CSKY_16_IS_MOV_FP_SP(insn) (insn == 0x6e3b) /* mov r8, r14. */
#define CSKY_32_IS_MOV_FP_SP(insn) (insn == 0xc40e4828) /* mov r8, r14. */
#define CSKY_16_IS_MOV_SP_FP(insn) (insn == 0x6fa3) /* mov r14, r8. */
#define CSKY_32_INSN_MASK 0xc000
#define CSKY_BKPT_INSN 0x0
#define CSKY_NUM_GREGS 32
/* 32 general regs + 4. */
#define CSKY_NUM_GREGS_SAVED_GREGS (CSKY_NUM_GREGS + 4)
/* CSKY software bkpt write-mode. */
#define CSKY_WR_BKPT_MODE 4
/* Define insns for parse rt_sigframe. */
/* There are three words(sig, pinfo, puc) before siginfo. */
#define CSKY_SIGINFO_OFFSET 0xc
/* Size of struct siginfo. */
#define CSKY_SIGINFO_SIZE 0x80
/* There are five words(uc_flags, uc_link, and three for uc_stack)
in struct ucontext before sigcontext. */
#define CSKY_UCONTEXT_SIGCONTEXT 0x14
/* There is a word(sc_mask) before sc_usp. */
#define CSKY_SIGCONTEXT_SC_USP 0x4
/* There is a word(sc_usp) before sc_a0. */
#define CSKY_SIGCONTEXT_SC_A0 0x4
#define CSKY_MOVI_R7_173 0x00adea07
#define CSKY_TRAP_0 0x2020c000
#endif
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