Re: [PATCH] arm reversible : <phase_2_complete>

[oza Pawandeep <oza dot pawandeep at gmail dot com>]

Hi Petr and Yao,

It has been a while since I have heard from you.
Can I assume that there are no more review comments ?

Regards,
Oza.

On Wed, Nov 9, 2011 at 11:37 AM, oza Pawandeep <oza.pawandeep@gmail.com> wrote:
> Hi,
>
> please find the latest patch below.
>
> PATCH STARTS
> --------------------------------
>
>
> diff -urN arm_orig/arm-linux-tdep.c arm_new/arm-linux-tdep.c
> --- arm_orig/arm-linux-tdep.c ? 2011-07-28 09:40:19.000000000 +0530
> +++ arm_new/arm-linux-tdep.c ? ?2011-07-28 09:41:06.000000000 +0530
> @@ -1025,6 +1025,9 @@
> ? set_gdbarch_fetch_tls_load_module_address (gdbarch,
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?svr4_fetch_objfile_link_map);
>
> + ?/* Enable process record. ?*/
> + ?set_gdbarch_process_record (gdbarch, arm_process_record);
> +
> ? tramp_frame_prepend_unwinder (gdbarch,
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?&arm_linux_sigreturn_tramp_frame);
> ? tramp_frame_prepend_unwinder (gdbarch,
> @@ -1054,6 +1057,8 @@
>
>
> ? tdep->syscall_next_pc = arm_linux_syscall_next_pc;
> +
> + ?tdep->arm_swi_record = NULL;
> ?}
>
> ?/* Provide a prototype to silence -Wmissing-prototypes. ?*/
> diff -urN arm_orig/arm-tdep.c arm_new/arm-tdep.c
> --- arm_orig/arm-tdep.c 2011-07-28 09:40:19.000000000 +0530
> +++ arm_new/arm-tdep.c ?2011-11-09 11:31:46.000000000 +0530
> @@ -55,6 +55,8 @@
> ?#include "gdb_assert.h"
> ?#include "vec.h"
>
> +#include "record.h"
> +
> ?#include "features/arm-with-m.c"
>
> ?static int arm_debug;
> @@ -8821,3 +8823,2039 @@
> ? ? ? ? ? ? ? ? ? ? ? ? ? NULL, /* FIXME: i18n: "ARM debugging is %s. ?*/
> ? ? ? ? ? ? ? ? ? ? ? ? ? &setdebuglist, &showdebuglist);
> ?}
> +
> +
> +
> +/* ARM-reversible process record data structures. ?*/
> +
> +#define ARM_INSN_SIZE_BYTES 4
> +#define THUMB_INSN_SIZE_BYTES 2
> +#define THUMB2_INSN_SIZE_BYTES 4
> +
> +
> +#define INSN_S_L_BIT_NUM 20
> +
> +#define REG_ALLOC(REGS, LENGTH, RECORD_BUF) \
> +do ?\
> + ?{ \
> + ? ?unsigned int reg_len = LENGTH; \
> + ? ?if (reg_len) \
> + ? ? ?{ \
> + ? ? ? ?REGS = XNEWVEC (uint32_t, reg_len); \
> + ? ? ? ?memcpy(&REGS[0],&RECORD_BUF[0],sizeof(uint32_t)*LENGTH); \
> + ? ? ?} \
> + ?} \
> +while (0)
> +
> +#define MEM_ALLOC(MEMS, LENGTH, RECORD_BUF) \
> +do ?\
> + ?{ \
> + ? ?unsigned int mem_len = LENGTH; \
> + ? ?if (mem_len) \
> + ? ? ?{ \
> + ? ? ? ?MEMS = ?XNEWVEC (struct arm_mem_r, mem_len); ?\
> + ? ? ? ?memcpy(&MEMS->len,&RECORD_BUF[0],sizeof(struct arm_mem_r) * LENGTH); \
> + ? ? ?} \
> + ?} \
> +while (0)
> +
> +#define INSN_RECORDED(ARM_RECORD) \
> + ?((0 != ARM_RECORD->reg_rec_count) || (0 != ARM_RECORD->mem_rec_count))
> +
> +/* ARM memory record structure. ?*/
> +struct arm_mem_r
> +{
> + ?uint32_t len; ? ? /* Record length. ?*/
> + ?CORE_ADDR addr; ? /* Memory address. ?*/
> +};
> +
> +/* ARM instruction record contains opcode of current insn
> + ? and execution state (before entry to decode_insn() ),
> + ? contains list of to-be-modified registers and
> + ? memory blocks (on return from decode_insn() ). ?*/
> +
> +typedef struct insn_decode_record_t
> +{
> + ?struct gdbarch *gdbarch;
> + ?struct regcache *regcache;
> + ?CORE_ADDR this_addr; ? ? ? ? ?/* Address of the insn being decoded. ?*/
> + ?uint32_t arm_insn; ? ? ? ? ? ?/* Should accommodate thumb. ?*/
> + ?uint32_t cond; ? ? ? ? ? ? ? ?/* Condition code. ?*/
> + ?uint32_t opcode; ? ? ? ? ? ? ?/* Insn opcode. ?*/
> + ?uint32_t decode; ? ? ? ? ? ? ?/* Insn decode bits. ?*/
> + ?uint32_t mem_rec_count; ? ? ? /* No of mem records. ?*/
> + ?uint32_t reg_rec_count; ? ? ? /* No of reg records. ?*/
> + ?uint32_t *arm_regs; ? ? ? ? ? /* Registers to be saved for this record. ?*/
> + ?struct arm_mem_r *arm_mems; ? /* Memory to be saved for this record. ?*/
> +} insn_decode_record;
> +
> +
> +/* Checks ARM SBZ and SBO mandatory fields. ?*/
> +
> +static int
> +sbo_sbz (uint32_t insn, uint32_t bit_num, uint32_t len, uint32_t sbo)
> +{
> + ?uint32_t ones = bits (insn, bit_num - 1, (bit_num -1) + (len - 1));
> +
> + ?if (!len)
> + ? ?return 1;
> +
> + ?if (!sbo)
> + ? ?ones = ~ones;
> +
> + ?while (ones)
> + ? ?{
> + ? ? ?if (!(ones & sbo))
> + ? ? ? ?{
> + ? ? ? ? ?return 0;
> + ? ? ? ?}
> + ? ? ?ones = ones >> 1;
> + ? ?}
> + ?return 1;
> +}
> +
> +typedef enum
> +{
> + ?ARM_RECORD_STRH=1,
> + ?ARM_RECORD_STRD
> +}arm_record_strx_t;
> +
> +typedef enum
> +{
> + ?ARM_RECORD=1,
> + ?THUMB_RECORD,
> + ?THUMB2_RECORD
> +}record_type_t;
> +
> +
> +static int
> +arm_record_strx (insn_decode_record *arm_insn_r, uint32_t *record_buf,
> + ? ?uint32_t *record_buf_mem, arm_record_strx_t str_type)
> +{
> +
> + ? struct regcache *reg_cache = arm_insn_r->regcache;
> + ? ULONGEST u_regval[2]= {0};
> +
> + ? uint32_t reg_src1 = 0, reg_src2 = 0;
> + ? uint32_t immed_high = 0, immed_low = 0,offset_8 = 0, tgt_mem_addr = 0;
> + ? uint32_t opcode1 = 0;
> +
> + ? arm_insn_r->opcode = bits (arm_insn_r->arm_insn, 21, 24);
> + ? arm_insn_r->decode = bits (arm_insn_r->arm_insn, 4, 7);
> + ? opcode1 = bits (arm_insn_r->arm_insn, 20, 24);
> +
> +
> + ? if ((14 == arm_insn_r->opcode) || (10 == arm_insn_r->opcode))
> + ? ?{
> + ? ? ?/* 1) Handle misc store, immediate offset. ?*/
> + ? ? ?immed_low = bits (arm_insn_r->arm_insn, 0, 3);
> + ? ? ?immed_high = bits (arm_insn_r->arm_insn, 8, 11);
> + ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1,
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?&u_regval[0]);
> + ? ? ?if (ARM_PC_REGNUM == reg_src1)
> + ? ? ? ?{
> + ? ? ? ? ?/* If R15 was used as Rn, hence current PC+8. ?*/
> + ? ? ? ? ?u_regval[0] = u_regval[0] + 8;
> + ? ? ? ?}
> + ? ? ?offset_8 = (immed_high << 4) | immed_low;
> + ? ? ?/* Calculate target store address. ?*/
> + ? ? ?if (14 == arm_insn_r->opcode)
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval[0] + offset_8;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval[0] - offset_8;
> + ? ? ? ?}
> + ? ? ?if (ARM_RECORD_STRH == str_type)
> + ? ? ? ?{
> + ? ? ? ? ?*(record_buf_mem) = 2;
> + ? ? ? ? ?*(record_buf_mem + 1) = tgt_mem_addr;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else if (ARM_RECORD_STRD == str_type)
> + ? ? ? ?{
> + ? ? ? ? ?*(record_buf_mem) = 4;
> + ? ? ? ? ?*(record_buf_mem + 1) = tgt_mem_addr;
> + ? ? ? ? ?*(record_buf_mem + 2) = 4;
> + ? ? ? ? ?*(record_buf_mem + 3) = tgt_mem_addr + 4;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 2;
> + ? ? ? ?}
> + ? ?}
> + ?else if ((12 == arm_insn_r->opcode) || (8 == arm_insn_r->opcode))
> + ? ?{
> + ? ? ?/* 2) Store, register offset. ?*/
> + ? ? ?/* Get Rm. ?*/
> + ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 0, 3);
> + ? ? ?/* Get Rn. ?*/
> + ? ? ?reg_src2 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[0]);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src2
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[1]);
> + ? ? ?if (15 == reg_src2)
> + ? ? ? ?{
> + ? ? ? ? ?/* If R15 was used as Rn, hence current PC+8. ?*/
> + ? ? ? ? ?u_regval[0] = u_regval[0] + 8;
> + ? ? ? ?}
> + ? ? ?/* Calculate target store address, Rn +/- Rm, register offset. ?*/
> + ? ? ?if (12 == arm_insn_r->opcode)
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval[0] + u_regval[1];
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval[1] - u_regval[0];
> + ? ? ? ?}
> + ? ? ?if (ARM_RECORD_STRH == str_type)
> + ? ? ? ?{
> + ? ? ? ? ?*(record_buf_mem) = 2;
> + ? ? ? ? ?*(record_buf_mem + 1) = tgt_mem_addr;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else if (ARM_RECORD_STRD == str_type)
> + ? ? ? ?{
> + ? ? ? ? ?*(record_buf_mem) = 4;
> + ? ? ? ? ?*(record_buf_mem + 1) = tgt_mem_addr;
> + ? ? ? ? ?*(record_buf_mem + 2) = 4;
> + ? ? ? ? ?*(record_buf_mem + 3) = tgt_mem_addr + 4;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 2;
> + ? ? ? ?}
> + ? ?}
> + ?else if ((11 == arm_insn_r->opcode) || (15 == arm_insn_r->opcode)
> + ? ?|| (2 == arm_insn_r->opcode) || (6 == arm_insn_r->opcode))
> + ? ?{
> + ? ? ?/* 3) Store, immediate pre-indexed. ?*/
> + ? ? ?/* 5) Store, immediate post-indexed. ?*/
> + ? ? ?immed_low = bits (arm_insn_r->arm_insn, 0, 3);
> + ? ? ?immed_high = bits (arm_insn_r->arm_insn, 8, 11);
> + ? ? ?offset_8 = (immed_high << 4) | immed_low;
> + ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? , &u_regval[0]);
> + ? ? ?/* Calculate target store address, Rn +/- Rm, register offset. ?*/
> + ? ? ?if ((15 == arm_insn_r->opcode) || (6 == arm_insn_r->opcode))
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval[0] + offset_8;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval[0] - offset_8;
> + ? ? ? ?}
> + ? ? ?if (ARM_RECORD_STRH == str_type)
> + ? ? ? ?{
> + ? ? ? ? ?*(record_buf_mem) = 2;
> + ? ? ? ? ?*(record_buf_mem + 1) = tgt_mem_addr;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else if (ARM_RECORD_STRD == str_type)
> + ? ? ? ?{
> + ? ? ? ? ?*(record_buf_mem) = 4;
> + ? ? ? ? ?*(record_buf_mem + 1) = tgt_mem_addr;
> + ? ? ? ? ?*(record_buf_mem + 2) = 4;
> + ? ? ? ? ?*(record_buf_mem + 3) = tgt_mem_addr + 4;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 2;
> + ? ? ? ?}
> + ? ? ?/* Record Rn also as it changes. ?*/
> + ? ? ?*(record_buf) = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if ((9 == arm_insn_r->opcode) || (13 == arm_insn_r->opcode)
> + ?|| (0 == arm_insn_r->opcode) || (4 == arm_insn_r->opcode))
> + ? ?{
> + ? ? ?/* 4) Store, register pre-indexed. ?*/
> + ? ? ?/* 6) Store, register post -indexed. ?*/
> + ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 0, 3);
> + ? ? ?reg_src2 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[0]);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src2
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[1]);
> + ? ? ?/* Calculate target store address, Rn +/- Rm, register offset. ?*/
> + ? ? ?if ((13 == arm_insn_r->opcode) || (4 == arm_insn_r->opcode))
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval[0] + u_regval[1];
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval[1] - u_regval[0];
> + ? ? ? ?}
> + ? ? ?if (ARM_RECORD_STRH == str_type)
> + ? ? ? ?{
> + ? ? ? ? ?*(record_buf_mem) = 2;
> + ? ? ? ? ?*(record_buf_mem + 1) = tgt_mem_addr;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else if (ARM_RECORD_STRD == str_type)
> + ? ? ? ?{
> + ? ? ? ? ?*(record_buf_mem) = 4;
> + ? ? ? ? ?*(record_buf_mem + 1) = tgt_mem_addr;
> + ? ? ? ? ?*(record_buf_mem + 2) = 4;
> + ? ? ? ? ?*(record_buf_mem + 3) = tgt_mem_addr + 4;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 2;
> + ? ? ? ?}
> + ? ? ?/* Record Rn also as it changes. ?*/
> + ? ? ?*(record_buf) = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?return 0;
> +}
> +
> +/* Handling ARM extension space insns. ?*/
> +
> +static int
> +arm_record_extension_space (insn_decode_record *arm_insn_r)
> +{
> + ?uint32_t ret = 0;
> + ?uint32_t opcode1 = 0, opcode2 = 0, insn_op1=0;
> + ?uint32_t record_buf[8], record_buf_mem[8];
> + ?uint32_t reg_src1 = 0;
> + ?uint32_t immed_high = 0, immed_low = 0,offset_8 = 0, tgt_mem_addr = 0;
> + ?struct regcache *reg_cache = arm_insn_r->regcache;
> + ?ULONGEST u_regval = 0;
> +
> + ?/* handle unconditional insn extension space */
> +
> + ?opcode1 = bits (arm_insn_r->arm_insn, 20, 27);
> + ?opcode2 = bits (arm_insn_r->arm_insn, 4, 7);
> + ?if (arm_insn_r->cond)
> + ? ?{
> + ? ? ?/* PLD has no affect on architectural state, it just affects
> the caches. ?*/
> + ? ? ?if (5 == ((opcode1 & 0xE0) >> 5))
> + ? ? ? ?{
> + ? ? ? ? ?/* BLX(1) */
> + ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ?record_buf[1] = ARM_LR_REGNUM;
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ?}
> + ? ? ?/* STC2, LDC2, MCR2, MRC2, CDP2: <TBD>, co-processor insn. ?*/
> + ? ?}
> +
> +
> + ?opcode1 = bits (arm_insn_r->arm_insn, 25, 27);
> + ?if (3 == opcode1 && bit (arm_insn_r->arm_insn, 4))
> + ? ?{
> + ? ? ?ret = -1;
> + ? ? ?/* Undefined instruction on ARM V5; need to handle if later versions
> + ? ? ? ? define it. ?*/
> + ? ?}
> +
> + ?opcode1 = bits (arm_insn_r->arm_insn, 24, 27);
> + ?opcode2 = bits (arm_insn_r->arm_insn, 4, 7);
> + ?insn_op1 = bits (arm_insn_r->arm_insn, 20, 23);
> +
> + ?/* Handle arithmetic insn extension space. ?*/
> + ?if (!opcode1 && (9 == opcode2) && (1 != arm_insn_r->cond)
> + ? ? ?&& !(INSN_RECORDED(arm_insn_r)))
> + ? ?{
> + ? ? ?/* Handle MLA(S) and MUL(S). ?*/
> + ? ? ? ? if ((0 <= insn_op1) && (3 >= insn_op1))
> + ? ? ?{
> + ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ?record_buf[1] = ARM_PS_REGNUM;
> + ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ?}
> + ? ? ?else if ((4 <= insn_op1) && (15 >= insn_op1))
> + ? ? ?{
> + ? ? ? ?/* Handle SMLAL(S), SMULL(S), UMLAL(S), UMULL(S). ?*/
> + ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ? ?record_buf[1] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ?record_buf[2] = ARM_PS_REGNUM;
> + ? ? ? ?arm_insn_r->reg_rec_count = 3;
> + ? ? ?}
> + ? ?}
> +
> + ?opcode1 = bits (arm_insn_r->arm_insn, 26, 27);
> + ?opcode2 = bits (arm_insn_r->arm_insn, 23, 24);
> + ?insn_op1 = bits (arm_insn_r->arm_insn, 21, 22);
> +
> + ?/* Handle control insn extension space. ?*/
> +
> + ?if (!opcode1 && (2 == opcode2) && !bit (arm_insn_r->arm_insn, 20)
> + ? ? ?&& (1 != arm_insn_r->cond) && !(INSN_RECORDED(arm_insn_r)))
> + ? ?{
> + ? ? ?if (!bit (arm_insn_r->arm_insn,25))
> + ? ? ? ?{
> + ? ? ? ? ?if (!bits (arm_insn_r->arm_insn, 4, 7))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?if ((0 == insn_op1) || (2 == insn_op1))
> + ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ?/* MRS. ?*/
> + ? ? ? ? ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ?else if (1 == insn_op1)
> + ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ?/* CSPR is going to be changed. ?*/
> + ? ? ? ? ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ?else if (3 == insn_op1)
> + ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ?/* SPSR is going to be changed. ?*/
> + ? ? ? ? ? ? ? ? ?/* FIX ME: How to read SPSR value? ?*/
> + ? ? ? ? ? ? ? ? ?printf_unfiltered (_("Process record does not support "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? "instruction ?0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? arm_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ? ? ? ? paddress (arm_insn_r->gdbarch,
> arm_insn_r->this_addr));
> + ? ? ? ? ? ? ? ? ?return -1;
> + ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else if (1 == bits (arm_insn_r->arm_insn, 4, 7))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?if (1 == insn_op1)
> + ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ?/* BX. ?*/
> + ? ? ? ? ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ?else if (3 == insn_op1)
> + ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ?/* CLZ. ?*/
> + ? ? ? ? ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else if (3 == bits (arm_insn_r->arm_insn, 4, 7))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?/* BLX. ?*/
> + ? ? ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ? ? ?record_buf[1] = ARM_LR_REGNUM;
> + ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else if (5 == bits (arm_insn_r->arm_insn, 4, 7))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?/* QADD, QSUB, QDADD, QDSUB */
> + ? ? ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ? ? ?record_buf[1] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else if (7 == bits (arm_insn_r->arm_insn, 4, 7))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?/* BKPT. ?*/
> + ? ? ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ? ? ?record_buf[1] = ARM_LR_REGNUM;
> + ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> +
> + ? ? ? ? ? ? ?/* Save SPSR also;how? ?*/
> + ? ? ? ? ? ? ?printf_unfiltered (_("Process record does not support "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? "instruction 0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? arm_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ? paddress (arm_insn_r->gdbarch, arm_insn_r->this_addr));
> + ? ? ? ? ? ? ?return -1;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else if((8 == bits (arm_insn_r->arm_insn, 4, 7)) ||
> + ? ? ? ? ? ? ? ? ?(10 == bits (arm_insn_r->arm_insn, 4, 7)) ||
> + ? ? ? ? ? ? ? ? ?(12 == bits (arm_insn_r->arm_insn, 4, 7)) ||
> + ? ? ? ? ? ? ? ? ?(14 == bits (arm_insn_r->arm_insn, 4, 7))
> + ? ? ? ? ? ? ? ? )
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?if ((0 == insn_op1) || (1 == insn_op1))
> + ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ?/* SMLA<x><y>, SMLAW<y>, SMULW<y>. ?*/
> + ? ? ? ? ? ? ? ? ?/* we dont do optimization for SMULW<y> where we
> need only Rd */
> + ? ? ? ? ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ? ? ? ? ?record_buf[1] = ARM_PS_REGNUM;
> + ? ? ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ?else if (2 == insn_op1)
> + ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ?/* SMLAL<x><y>. ?*/
> + ? ? ? ? ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ? ? ? ? ?record_buf[1] = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ?else if (3 == insn_op1)
> + ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ?/* SMUL<x><y>. ?*/
> + ? ? ? ? ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ?}
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?/* MSR : immediate form. ?*/
> + ? ? ? ? ?if (1 == insn_op1)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?/* CSPR is going to be changed. ?*/
> + ? ? ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else if (3 == insn_op1)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?/* SPSR is going to be changed. ?*/
> + ? ? ? ? ? ? ?/* FIX ME: How to read SPSR value? ?*/
> + ? ? ? ? ? ? ?printf_unfiltered (_("Process record does not support "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? "instruction 0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? arm_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ?paddress (arm_insn_r->gdbarch, arm_insn_r->this_addr));
> + ? ? ? ? ? ? ?return -1;
> + ? ? ? ? ? ?}
> + ? ? ? ?}
> + ? ?}
> +
> + ?opcode1 = bits (arm_insn_r->arm_insn, 25, 27);
> + ?opcode2 = bits (arm_insn_r->arm_insn, 20, 24);
> + ?insn_op1 = bits (arm_insn_r->arm_insn, 5, 6);
> +
> + ?/* Handle load/store insn extension space. ?*/
> +
> + ?if (!opcode1 && bit (arm_insn_r->arm_insn, 7) &&
> + ? ? bit (arm_insn_r->arm_insn, 4) && (1 != arm_insn_r->cond)
> + ? ? && !(INSN_RECORDED(arm_insn_r)))
> + ? ?{
> + ? ? ?/* SWP/SWPB. ?*/
> + ? ? ?if (0 == insn_op1)
> + ? ? ? ?{
> + ? ? ? ? ?/* These insn, changes register and memory as well. ?*/
> + ? ? ? ? ?/* SWP or SWPB insn. ?*/
> + ? ? ? ? ?/* Get memory address given by Rn. ?*/
> + ? ? ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval);
> + ? ? ? ? ?/* SWP insn ?, swaps word. ?*/
> + ? ? ? ? ?if (8 == arm_insn_r->opcode)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?record_buf_mem[0] = 4;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else
> + ? ? ? ? ? {
> + ? ? ? ? ? ? ?/* SWPB insn, swaps only byte. ?*/
> + ? ? ? ? ? ? ?record_buf_mem[0] = 1;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?record_buf_mem[1] = u_regval;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 1;
> + ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else if ((1 == insn_op1) && (!bit(arm_insn_r->arm_insn, 20)))
> + ? ? ? ?{
> + ? ? ? ? ?/* STRH. ?*/
> + ? ? ? ? ?arm_record_strx(arm_insn_r, &record_buf[0], &record_buf_mem[0],
> + ? ? ? ? ? ? ? ? ? ? ? ? ?ARM_RECORD_STRH);
> + ? ? ? ?}
> + ? ? ?else if ((2 == insn_op1) && !bit(arm_insn_r->arm_insn, 20))
> + ? ? ? ?{
> + ? ? ? ? ?/* LDRD. ?*/
> + ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ?record_buf[1] = record_buf[0] + 1;
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ?}
> + ? ? ?else if ((3 == insn_op1) && !bit(arm_insn_r->arm_insn, 20))
> + ? ? ? ?{
> + ? ? ? ? ?/* STRD. ?*/
> + ? ? ? ? ?arm_record_strx(arm_insn_r, &record_buf[0], &record_buf_mem[0],
> + ? ? ? ? ? ? ? ? ? ? ? ? ARM_RECORD_STRD);
> + ? ? ? ?}
> + ? ? ?else if (bit(arm_insn_r->arm_insn, 20) && (insn_op1 <= 3))
> + ? ? ? ?{
> + ? ? ? ? ?/* LDRH, LDRSB, LDRSH. ?*/
> + ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> +
> + ? ?}
> +
> + ?opcode1 = bits (arm_insn_r->arm_insn, 23, 27);
> + ?if ((24 == opcode1) && bit (arm_insn_r->arm_insn, 21)
> + ? ? ? && !(INSN_RECORDED(arm_insn_r)))
> + ? ?{
> + ? ? ?ret = -1;
> + ? ? ?/* Handle coprocessor insn extension space. ?*/
> + ? ?}
> +
> + ?/* To be done for ARMv5 and later; as of now we return -1. ?*/
> + ?if (-1 == ret)
> + ? ?printf_unfiltered (_("Process record does not support instruction 0x%0x "
> + ? ? ? ? ? ? ? ? ? ? ? "at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? arm_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ? ? ? paddress (arm_insn_r->gdbarch, arm_insn_r->this_addr));
> +
> +
> + ?REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (arm_insn_r->arm_mems, arm_insn_r->mem_rec_count, record_buf_mem);
> +
> + ?return ret;
> +}
> +
> +/* Handling opcode 000 insns. ?*/
> +
> +static int
> +arm_record_data_proc_misc_ld_str (insn_decode_record *arm_insn_r)
> +{
> + ?struct regcache *reg_cache = arm_insn_r->regcache;
> + ?uint32_t record_buf[8], record_buf_mem[8];
> + ?ULONGEST u_regval[2] = {0};
> +
> + ?uint32_t reg_src1 = 0, reg_src2 = 0, reg_dest = 0;
> + ?uint32_t immed_high = 0, immed_low = 0,offset_8 = 0, tgt_mem_addr = 0;
> + ?uint32_t opcode1 = 0;
> +
> + ?arm_insn_r->opcode = bits (arm_insn_r->arm_insn, 21, 24);
> + ?arm_insn_r->decode = bits (arm_insn_r->arm_insn, 4, 7);
> + ?opcode1 = bits (arm_insn_r->arm_insn, 20, 24);
> +
> + ?/* Data processing insn /multiply insn. ?*/
> + ?if ((9 == arm_insn_r->decode)
> + ? ? && (((4 <= arm_insn_r->opcode) && (7 >= arm_insn_r->opcode))
> + ? ? || ?((0 == arm_insn_r->opcode) || (1 == arm_insn_r->opcode))))
> + ? ?{
> + ? ? ?/* Handle multiply instructions. ?*/
> + ? ? ?/* MLA, MUL, SMLAL, SMULL, UMLAL, UMULL. ?*/
> + ? ? ? ?if ((0 == arm_insn_r->opcode) || (1 == arm_insn_r->opcode))
> + ? ? ? ? ?{
> + ? ? ? ? ? ?/* Handle MLA and MUL. ?*/
> + ? ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ? ? ? ?record_buf[1] = ARM_PS_REGNUM;
> + ? ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ? ?}
> + ? ? ? ?else if ((4 <= arm_insn_r->opcode) && (7 >= arm_insn_r->opcode))
> + ? ? ? ? {
> + ? ? ? ? ?/* Handle SMLAL, SMULL, UMLAL, UMULL. ?*/
> + ? ? ? ? ? record_buf[0] = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ? ? ? record_buf[1] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ? record_buf[2] = ARM_PS_REGNUM;
> + ? ? ? ? ? arm_insn_r->reg_rec_count = 3;
> + ? ? ? ? }
> + ? ? ?}
> + ?else if (bit (arm_insn_r->arm_insn, INSN_S_L_BIT_NUM)
> + ? ? ? ?&& ((11 == arm_insn_r->decode) || (13 == arm_insn_r->decode)))
> + ? ? ?{
> + ? ? ? ?/* Handle misc load insns, as 20th bit ?(L = 1). ?*/
> + ? ? ? ?/* LDR insn has a capability to do branching, if
> + ? ? ? ? ? MOV LR, PC is precceded by LDR insn having Rn as R15
> + ? ? ? ? ? in that case, it emulates branch and link insn, and hence we
> + ? ? ? ? ? need to save CSPR and PC as well. I am not sure this is right
> + ? ? ? ? ? place as opcode = 010 LDR insn make this happen, if R15 was
> + ? ? ? ? ? used. ?*/
> + ? ? ? ?reg_dest = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ?if (15 != reg_dest)
> + ? ? ? ? ?{
> + ? ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ?}
> + ? ? ? ?else
> + ? ? ? ? ?{
> + ? ? ? ? ? ?record_buf[0] = reg_dest;
> + ? ? ? ? ? ?record_buf[1] = ARM_PS_REGNUM;
> + ? ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ? ?}
> + ? ? ?}
> + ?else if (((9 == arm_insn_r->opcode) || (11 == arm_insn_r->opcode))
> + ? ? ?&& sbo_sbz (arm_insn_r->arm_insn, 5, 12, 0)
> + ? ? ?&& sbo_sbz (arm_insn_r->arm_insn, 13, 4, 1)
> + ? ? ?&& 2 == bits (arm_insn_r->arm_insn, 20, 21))
> + ? ?{
> + ? ? ?/* Handle MSR insn. ?*/
> + ? ? ?if (9 == arm_insn_r->opcode)
> + ? ? ? ?{
> + ? ? ? ? ?/* CSPR is going to be changed. ?*/
> + ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?/* SPSR is going to be changed. ?*/
> + ? ? ? ? ?/* How to read SPSR value? ?*/
> + ? ? ? ? ?printf_unfiltered (_("Process record does not support instruction "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? "0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? arm_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ? ? ? ? paddress (arm_insn_r->gdbarch,
> arm_insn_r->this_addr));
> + ? ? ? ? ?return -1;
> + ? ? ? ?}
> + ? ?}
> + ?else if ((9 == arm_insn_r->decode)
> + ? ? ? ? ? && ((8 == arm_insn_r->opcode) || (10 == arm_insn_r->opcode))
> + ? ? ? ? ? && !bit (arm_insn_r->arm_insn, ?INSN_S_L_BIT_NUM))
> + ? ?{
> + ? ? ?/* Handling SWP, SWPB. ?*/
> + ? ? ?/* These insn, changes register and memory as well. ?*/
> + ? ? ?/* SWP or SWPB insn. ?*/
> +
> + ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[0]);
> + ? ? ?/* SWP insn ?, swaps word. ?*/
> + ? ? ?if (8 == arm_insn_r->opcode)
> + ? ? ? ?{
> + ? ? ? ? ?record_buf_mem[0] = 4;
> + ? ? ? ?}
> + ? ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?/* SWPB insn, swaps only byte. ?*/
> + ? ? ? ? ?record_buf_mem[0] = 1;
> + ? ? ? ?}
> + ? ? ?record_buf_mem[1] = u_regval[0];
> + ? ? ?arm_insn_r->mem_rec_count = 1;
> + ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if ((3 == arm_insn_r->decode) && (0x12 == opcode1)
> + ? ? ? ? ? && sbo_sbz (arm_insn_r->arm_insn, 9, 12, 1))
> + ? ?{
> + ? ? ?/* Handle BLX, branch and link/exchange. ?*/
> + ? ? ?if (9 == arm_insn_r->opcode)
> + ? ? ?{
> + ? ? ? ?/* Branch is chosen by setting T bit of CSPR, bitp[0] of Rm,
> + ? ? ? ? ? ? ?and R14 stores the return address. ?*/
> + ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ?record_buf[1] = ARM_LR_REGNUM;
> + ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ?}
> + ? ?}
> + ?else if ((7 == arm_insn_r->decode) && (0x12 == opcode1))
> + ? ?{
> + ? ? ? ? /* Handle enhanced software breakpoint insn, BKPT. ?*/
> + ? ? ? ? /* CPSR is changed to be executed in ARM state, ?disabling normal
> + ? ? ? ? ? ?interrupts, entering abort mode. ?*/
> + ? ? ? ? /* According to high vector configuration PC is set. ?*/
> + ? ? ? ? /* What if user hit breakpoint and type reverse, in
> + ? ? ? ? ? ?that case, we need to go back with previous CPSR and
> + ? ? ? ? ? ?Program Counter. ?*/
> + ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ?record_buf[1] = ARM_LR_REGNUM;
> + ? ? ?arm_insn_r->reg_rec_count = 2;
> +
> + ? ? ?/* Save SPSR also; how? ?*/
> + ? ? ?printf_unfiltered (_("Process record does not support instruction "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? "0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? ? ? arm_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ? ? ? ?paddress (arm_insn_r->gdbarch, arm_insn_r->this_addr));
> + ? ? ?return -1;
> + ? ?}
> + ?else if ((11 == arm_insn_r->decode)
> + ? ? ? ? ?&& !bit (arm_insn_r->arm_insn, INSN_S_L_BIT_NUM))
> + ?{
> + ? ?/* Handle enhanced store insns and DSP insns (e.g. LDRD). ?*/
> +
> + ? ?/* Handle str(x) insn */
> + ? ?arm_record_strx(arm_insn_r, &record_buf[0], &record_buf_mem[0],
> + ? ? ? ? ? ? ? ? ? ?ARM_RECORD_STRH);
> + ?}
> + ?else if ((1 == arm_insn_r->decode) && (0x12 == opcode1)
> + ? ? ? ? ? && sbo_sbz (arm_insn_r->arm_insn, 9, 12, 1))
> + ? ?{
> + ? ? ?/* Handle BX, branch and link/exchange. ?*/
> + ? ? ?/* Branch is chosen by setting T bit of CSPR, bitp[0] of Rm. ?*/
> + ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if ((1 == arm_insn_r->decode) && (0x16 == opcode1)
> + ? ? ? ? ? && sbo_sbz (arm_insn_r->arm_insn, 9, 4, 1)
> + ? ? ? ? ? && sbo_sbz (arm_insn_r->arm_insn, 17, 4, 1))
> + ? ?{
> + ? ? ?/* Count leading zeros: CLZ. ?*/
> + ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if (!bit (arm_insn_r->arm_insn, INSN_S_L_BIT_NUM)
> + ? ? ? ? ?&& ((8 == arm_insn_r->opcode) || (10 == arm_insn_r->opcode))
> + ? ? ? ? ?&& sbo_sbz (arm_insn_r->arm_insn, 17, 4, 1)
> + ? ? ? ? ?&& sbo_sbz (arm_insn_r->arm_insn, 1, 12, 0)
> + ? ? ? ? ?)
> + ? ?{
> + ? ? ?/* Handle MRS insn. ?*/
> + ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if (arm_insn_r->opcode <= 15)
> + ? ?{
> + ? ? ?/* Normal data processing insns. ?*/
> + ? ? ?/* Out of 11 shifter operands mode, all the insn modifies destination
> + ? ? ? ?register, which is specified by 13-16 decode. ?*/
> + ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ?record_buf[1] = ARM_PS_REGNUM;
> + ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ?}
> + ?else
> + ? ?{
> + ? ? ?return -1;
> + ? ?}
> +
> + ?REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (arm_insn_r->arm_mems, arm_insn_r->mem_rec_count, record_buf_mem);
> + ?return 0;
> +}
> +
> +/* Handling opcode 001 insns. ?*/
> +
> +static int
> +arm_record_data_proc_imm (insn_decode_record *arm_insn_r)
> +{
> + ?uint32_t record_buf[8], record_buf_mem[8];
> +
> + ?arm_insn_r->opcode = bits (arm_insn_r->arm_insn, 21, 24);
> + ?arm_insn_r->decode = bits (arm_insn_r->arm_insn, 4, 7);
> +
> + ?if (((9 == arm_insn_r->opcode) || (11 == arm_insn_r->opcode))
> + ? ? ? && (2 == bits (arm_insn_r->arm_insn, 20, 21))
> + ? ? ? && sbo_sbz (arm_insn_r->arm_insn, 13, 4, 1)
> + ? ? ? )
> + ? ?{
> + ? ? ?/* Handle MSR insn. ?*/
> + ? ? ?if (9 == arm_insn_r->opcode)
> + ? ? ? ?{
> + ? ? ? ? ?/* CSPR is going to be changed. ?*/
> + ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?/* SPSR is going to be changed. ?*/
> + ? ? ? ?}
> + ? ?}
> + ?else if (arm_insn_r->opcode <= 15)
> + ? ?{
> + ? ? ?/* Normal data processing insns. ?*/
> + ? ? ?/* Out of 11 shifter operands mode, all the insn modifies destination
> + ? ? ? ?register, which is specified by 13-16 decode. ?*/
> + ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ?record_buf[1] = ARM_PS_REGNUM;
> + ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ?}
> + ?else
> + ? ?{
> + ? ? ?return -1;
> + ? ?}
> +
> + ?REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (arm_insn_r->arm_mems, arm_insn_r->mem_rec_count, record_buf_mem);
> + ?return 0;
> +}
> +
> +/* Handling opcode 010 insns. ?*/
> +
> +static int
> +arm_record_ld_st_imm_offset (insn_decode_record *arm_insn_r)
> +{
> + ?struct regcache *reg_cache = arm_insn_r->regcache;
> +
> + ?uint32_t reg_src1 = 0 , reg_dest = 0;
> + ?uint32_t offset_12 = 0, tgt_mem_addr = 0;
> + ?uint32_t record_buf[8], record_buf_mem[8];
> +
> + ?ULONGEST u_regval = 0;
> +
> + ?arm_insn_r->opcode = bits (arm_insn_r->arm_insn, 21, 24);
> + ?arm_insn_r->decode = bits (arm_insn_r->arm_insn, 4, 7);
> +
> + ?if (bit (arm_insn_r->arm_insn, INSN_S_L_BIT_NUM))
> + ? ?{
> + ? ? ?reg_dest = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ?/* LDR insn has a capability to do branching, if
> + ? ? ? ? MOV LR, PC is precedded by LDR insn having Rn as R15
> + ? ? ? ? in that case, it emulates branch and link insn, and hence we
> + ? ? ? ? need to save CSPR and PC as well. ?*/
> + ? ? ?if (ARM_PC_REGNUM != reg_dest)
> + ? ? ? ?{
> + ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?record_buf[0] = reg_dest;
> + ? ? ? ? ?record_buf[1] = ARM_PS_REGNUM;
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ?}
> + ? ?}
> + ?else
> + ? ?{
> + ? ? ?/* Store, immediate offset, immediate pre-indexed,
> + ? ? ? ? immediate post-indexed. ?*/
> + ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?offset_12 = bits (arm_insn_r->arm_insn, 0, 11);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval);
> + ? ? ?/* U == 1 */
> + ? ? ?if (bit (arm_insn_r->arm_insn, 23))
> + ? ? ? ?{
> + ? ? ? ? ?tgt_mem_addr = u_regval + offset_12;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? tgt_mem_addr = u_regval - offset_12;
> + ? ? ? ?}
> +
> + ? ? ?switch (arm_insn_r->opcode)
> + ? ? ? ?{
> + ? ? ? ? ?/* STR. ?*/
> + ? ? ? ? ?case 8:
> + ? ? ? ? ?case 12:
> + ? ? ? ? ?/* STR. ?*/
> + ? ? ? ? ?case 9:
> + ? ? ? ? ?case 13:
> + ? ? ? ? ?/* STRT. ?*/
> + ? ? ? ? ?case 1:
> + ? ? ? ? ?case 5:
> + ? ? ? ? ?/* STR. ?*/
> + ? ? ? ? ?case 4:
> + ? ? ? ? ?case 0:
> + ? ? ? ? ? ?record_buf_mem[0] = 4;
> + ? ? ? ? ?break;
> + ? ? ? ? ?/* STRB. ?*/
> + ? ? ? ? ?case 10:
> + ? ? ? ? ?case 14:
> + ? ? ? ? ?/* STRB. ?*/
> + ? ? ? ? ?case 11:
> + ? ? ? ? ?case 15:
> + ? ? ? ? ?/* STRBT. ?*/
> + ? ? ? ? ?case 3:
> + ? ? ? ? ?case 7:
> + ? ? ? ? ?/* STRB. ?*/
> + ? ? ? ? ?case 2:
> + ? ? ? ? ?case 6:
> + ? ? ? ? ? ?record_buf_mem[0] = 1;
> + ? ? ? ? ?break;
> +
> + ? ? ? ? ?default:
> + ? ? ? ? ? ?gdb_assert_not_reached ("no decoding pattern found");
> + ? ? ? ? ?break;
> + ? ? ? ?}
> + ? ? ?record_buf_mem[1] = tgt_mem_addr;
> + ? ? ?arm_insn_r->mem_rec_count = 1;
> +
> + ? ? ?if ((9 == arm_insn_r->opcode) || (11 == arm_insn_r->opcode)
> + ? ? ?|| (13 == arm_insn_r->opcode) || (15 == arm_insn_r->opcode)
> + ? ? ?|| (0 == arm_insn_r->opcode) || (2 == arm_insn_r->opcode)
> + ? ? ?|| (4 == arm_insn_r->opcode) || (6 == arm_insn_r->opcode)
> + ? ? ?|| (1 == arm_insn_r->opcode) || (3 == arm_insn_r->opcode)
> + ? ? ?|| (5 == arm_insn_r->opcode) || (7 == arm_insn_r->opcode))
> + ? ? ? ?{
> + ? ? ? ? ?/* We are handling pre-indexed mode; post-indexed mode;
> + ? ? ? ? ? ? where Rn is going to be changed. ?*/
> + ? ? ? ? ?record_buf[0] = reg_src1;
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> + ? ?}
> +
> + ?REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (arm_insn_r->arm_mems, arm_insn_r->mem_rec_count, record_buf_mem);
> + ?return 0;
> +}
> +
> +/* Handling opcode 011 insns. ?*/
> +
> +static int
> +arm_record_ld_st_reg_offset (insn_decode_record *arm_insn_r)
> +{
> + ?struct regcache *reg_cache = arm_insn_r->regcache;
> +
> + ?uint32_t shift_imm = 0;
> + ?uint32_t reg_src1 = 0, reg_src2 = 0, reg_dest = 0;
> + ?uint32_t offset_12 = 0, tgt_mem_addr = 0;
> + ?uint32_t record_buf[8], record_buf_mem[8];
> +
> + ?LONGEST s_word;
> + ?ULONGEST u_regval[2];
> +
> + ?arm_insn_r->opcode = bits (arm_insn_r->arm_insn, 21, 24);
> + ?arm_insn_r->decode = bits (arm_insn_r->arm_insn, 4, 7);
> +
> + ?/* Handle enhanced store insns and LDRD DSP insn,
> + ?let us begin according to addressing modes for store insns
> + ?STRH insn. ?*/
> +
> + ?/* LDR or STR? ?*/
> + ?if (bit (arm_insn_r->arm_insn, INSN_S_L_BIT_NUM))
> + ? ?{
> + ? ? ?reg_dest = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ?/* LDR insn has a capability to do branching, if
> + ? ? ? ?MOV LR, PC is precedded by LDR insn having Rn as R15
> + ? ? ? ?in that case, it emulates branch and link insn, and hence we
> + ? ? ? ?need to save CSPR and PC as well. ?*/
> + ? ? ?if (15 != reg_dest)
> + ? ? ? ?{
> + ? ? ? ? ?record_buf[0] = bits (arm_insn_r->arm_insn, 12, 15);
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?record_buf[0] = reg_dest;
> + ? ? ? ? ?record_buf[1] = ARM_PS_REGNUM;
> + ? ? ? ? ?arm_insn_r->reg_rec_count = 2;
> + ? ? ? ?}
> + ? ?}
> + ?else
> + ? ?{
> + ? ? ?if (! bits (arm_insn_r->arm_insn, 4, 11))
> + ? ? ? ?{
> + ? ? ? ? /* Store insn, register offset and register pre-indexed,
> + ? ? ? ? ? ?register post-indexed. ?*/
> + ? ? ? ? ?/* Get Rm. ?*/
> + ? ? ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 0, 3);
> + ? ? ? ? ?/* Get Rn. ?*/
> + ? ? ? ? ?reg_src2 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[0]);
> + ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src2
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[1]);
> + ? ? ? ? ?if (15 == reg_src2)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? /* If R15 was used as Rn, hence current PC+8. ?*/
> + ? ? ? ? ? ? /* Pre-indexed mode doesnt reach here ; illegal insn. ?*/
> + ? ? ? ? ? ? ?u_regval[0] = u_regval[0] + 8;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?/* Calculate target store address, Rn +/- Rm, register offset. ?*/
> + ? ? ? ? ?/* U == 1. ?*/
> + ? ? ? ? ?if (bit (arm_insn_r->arm_insn, 23))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?tgt_mem_addr = u_regval[0] +
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? u_regval[1];
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?tgt_mem_addr = u_regval[1] -
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? u_regval[0];
> + ? ? ? ? ? ?}
> +
> + ? ? ? ? ?switch (arm_insn_r->opcode)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? /* STR. ?*/
> + ? ? ? ? ? ? ?case 8:
> + ? ? ? ? ? ? ?case 12:
> + ? ? ? ? ? ? /* STR. ?*/
> + ? ? ? ? ? ? ?case 9:
> + ? ? ? ? ? ? ?case 13:
> + ? ? ? ? ? ? /* STRT. ?*/
> + ? ? ? ? ? ? ?case 1:
> + ? ? ? ? ? ? ?case 5:
> + ? ? ? ? ? ? /* STR. ?*/
> + ? ? ? ? ? ? case 0:
> + ? ? ? ? ? ? case 4:
> + ? ? ? ? ? ? ? ?record_buf_mem[0] = 4;
> + ? ? ? ? ? ? ?break;
> + ? ? ? ? ? ? ?/* STRB. ?*/
> + ? ? ? ? ? ? ?case 10:
> + ? ? ? ? ? ? ?case 14:
> + ? ? ? ? ? ? /* STRB. ?*/
> + ? ? ? ? ? ? ?case 11:
> + ? ? ? ? ? ? ?case 15:
> + ? ? ? ? ? ? /* STRBT. ?*/
> + ? ? ? ? ? ? ?case 3:
> + ? ? ? ? ? ? ?case 7:
> + ? ? ? ? ? ? /* STRB. ?*/
> + ? ? ? ? ? ? case 2:
> + ? ? ? ? ? ? case 6:
> + ? ? ? ? ? ? ? ?record_buf_mem[0] = 1;
> + ? ? ? ? ? ? ?break;
> + ? ? ? ? ? ? ?default:
> + ? ? ? ? ? ? ? ?gdb_assert_not_reached ("no decoding pattern found");
> + ? ? ? ? ? ? ?break;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?record_buf_mem[1] = tgt_mem_addr;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 1;
> +
> + ? ? ? ? ?if ((9 == arm_insn_r->opcode) || (11 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (13 == arm_insn_r->opcode) || (15 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (0 == arm_insn_r->opcode) || (2 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (4 == arm_insn_r->opcode) || (6 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (1 == arm_insn_r->opcode) || (3 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (5 == arm_insn_r->opcode) || (7 == arm_insn_r->opcode))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? /* Rn is going to be changed in pre-indexed mode and
> + ? ? ? ? ? ? ? ?post-indexed mode as well. ?*/
> + ? ? ? ? ? ? ?record_buf[0] = reg_src2;
> + ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ? ?}
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?/* Store insn, scaled register offset; scaled pre-indexed. ?*/
> + ? ? ? ? ?offset_12 = bits (arm_insn_r->arm_insn, 5, 6);
> + ? ? ? ? ?/* Get Rm. ?*/
> + ? ? ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 0, 3);
> + ? ? ? ? ?/* Get Rn. ?*/
> + ? ? ? ? ?reg_src2 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ? ? ?/* Get shift_imm. ?*/
> + ? ? ? ? ?shift_imm = bits (arm_insn_r->arm_insn, 7, 11);
> + ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[0]);
> + ? ? ? ? ?regcache_raw_read_signed (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &s_word);
> + ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src2
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[1]);
> + ? ? ? ? ?/* Offset_12 used as shift. ?*/
> + ? ? ? ? ?switch (offset_12)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?case 0:
> + ? ? ? ? ? ? ? ?/* Offset_12 used as index. ?*/
> + ? ? ? ? ? ? ? ?offset_12 = u_regval[0] << shift_imm;
> + ? ? ? ? ? ? ?break;
> +
> + ? ? ? ? ? ? ?case 1:
> + ? ? ? ? ? ? ? ?offset_12 = (!shift_imm)?0:u_regval[0] >> shift_imm;
> + ? ? ? ? ? ? ?break;
> +
> + ? ? ? ? ? ? ?case 2:
> + ? ? ? ? ? ? ? ?if (!shift_imm)
> + ? ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ? ?if (bit (u_regval[0], 31))
> + ? ? ? ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ? ? ? ?offset_12 = 0xFFFFFFFF;
> + ? ? ? ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ? ? ? ?else
> + ? ? ? ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ? ? ? ?offset_12 = 0;
> + ? ? ? ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ? ?else
> + ? ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ? ?/* This is arithmetic shift. ?*/
> + ? ? ? ? ? ? ? ? ? ?offset_12 = s_word >> shift_imm;
> + ? ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ? ?break;
> +
> + ? ? ? ? ? ? ?case 3:
> + ? ? ? ? ? ? ? ?if (!shift_imm)
> + ? ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, ARM_PS_REGNUM
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[1]);
> + ? ? ? ? ? ? ? ? ? ?/* Get C flag value and shift it by 31. ?*/
> + ? ? ? ? ? ? ? ? ? ?offset_12 = (((bit (u_regval[1], 29)) << 31) \
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?| (u_regval[0]) >> 1);
> + ? ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ? ?else
> + ? ? ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ? ? ?offset_12 = (u_regval[0] >> shift_imm) \
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?| (u_regval[0] <<
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?(sizeof(uint32_t) - shift_imm));
> + ? ? ? ? ? ? ? ? ?}
> + ? ? ? ? ? ? ?break;
> +
> + ? ? ? ? ? ? ?default:
> + ? ? ? ? ? ? ? ?gdb_assert_not_reached ("no decoding pattern found");
> + ? ? ? ? ? ? ?break;
> + ? ? ? ? ? ?}
> +
> + ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src2
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[1]);
> + ? ? ? ? ?/* bit U set. ?*/
> + ? ? ? ? ?if (bit (arm_insn_r->arm_insn, 23))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?tgt_mem_addr = u_regval[1] + offset_12;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?else
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?tgt_mem_addr = u_regval[1] - offset_12;
> + ? ? ? ? ? ?}
> +
> + ? ? ? ? ?switch (arm_insn_r->opcode)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?/* STR. ?*/
> + ? ? ? ? ? ? ?case 8:
> + ? ? ? ? ? ? ?case 12:
> + ? ? ? ? ? ? /* STR. ?*/
> + ? ? ? ? ? ? ?case 9:
> + ? ? ? ? ? ? ?case 13:
> + ? ? ? ? ? ? /* STRT. ?*/
> + ? ? ? ? ? ? ?case 1:
> + ? ? ? ? ? ? ?case 5:
> + ? ? ? ? ? ? /* STR. ?*/
> + ? ? ? ? ? ? case 0:
> + ? ? ? ? ? ? case 4:
> + ? ? ? ? ? ? ? ?record_buf_mem[0] = 4;
> + ? ? ? ? ? ? ?break;
> + ? ? ? ? ? ? /* STRB. ?*/
> + ? ? ? ? ? ? ?case 10:
> + ? ? ? ? ? ? ?case 14:
> + ? ? ? ? ? ? /* STRB. ?*/
> + ? ? ? ? ? ? ?case 11:
> + ? ? ? ? ? ? ?case 15:
> + ? ? ? ? ? ? /* STRBT. ?*/
> + ? ? ? ? ? ? ?case 3:
> + ? ? ? ? ? ? ?case 7:
> + ? ? ? ? ? ? /* STRB. ?*/
> + ? ? ? ? ? ? case 2:
> + ? ? ? ? ? ? case 6:
> + ? ? ? ? ? ? ? ?record_buf_mem[0] = 1;
> + ? ? ? ? ? ? ?break;
> + ? ? ? ? ? ? ?default:
> + ? ? ? ? ? ? ? ?gdb_assert_not_reached ("no decoding pattern found");
> + ? ? ? ? ? ? ?break;
> + ? ? ? ? ? ?}
> + ? ? ? ? ?record_buf_mem[1] = tgt_mem_addr;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = 1;
> +
> + ? ? ? ? ?if ((9 == arm_insn_r->opcode) || (11 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (13 == arm_insn_r->opcode) || (15 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (0 == arm_insn_r->opcode) || (2 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (4 == arm_insn_r->opcode) || (6 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (1 == arm_insn_r->opcode) || (3 == arm_insn_r->opcode)
> + ? ? ? ? ?|| (5 == arm_insn_r->opcode) || (7 == arm_insn_r->opcode))
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? /* Rn is going to be changed in register scaled pre-indexed
> + ? ? ? ? ? ? ? ?mode, and scaled post indexed mode. ?*/
> + ? ? ? ? ? ? ?record_buf[0] = reg_src2;
> + ? ? ? ? ? ? ?arm_insn_r->reg_rec_count = 1;
> + ? ? ? ? ? ?}
> + ? ? ? ?}
> + ? ?}
> +
> + ?REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (arm_insn_r->arm_mems, arm_insn_r->mem_rec_count, record_buf_mem);
> + ?return 0;
> +}
> +
> +/* Handling opcode 100 insns. ?*/
> +
> +static int
> +arm_record_ld_st_multiple (insn_decode_record *arm_insn_r)
> +{
> + ?struct regcache *reg_cache = arm_insn_r->regcache;
> +
> + ?uint32_t register_list[16] = {0}, register_count = 0, register_bits = 0;
> + ?uint32_t reg_src1 = 0, addr_mode = 0, no_of_regs = 0;
> + ?uint32_t start_address = 0, index = 0;
> + ?uint32_t record_buf[24], record_buf_mem[48];
> +
> + ?ULONGEST u_regval[2] = {0};
> +
> + ?/* This mode is exclusively for load and store multiple. ?*/
> + ?/* Handle incremenrt after/before and decrment after.before mode;
> + ? ? Rn is changing depending on W bit, but as of now we store Rn too
> + ? ? without optimization. ?*/
> +
> + ?if (bit (arm_insn_r->arm_insn, INSN_S_L_BIT_NUM))
> + ? ?{
> + ? ? ?/* LDM ?(1,2,3) where LDM ?(3) changes CPSR too. ?*/
> +
> + ? ? ?if (bit (arm_insn_r->arm_insn,20) && !bit (arm_insn_r->arm_insn,22))
> + ? ? ? ?{
> + ? ? ? ? ?register_bits = bits (arm_insn_r->arm_insn, 0, 15);
> + ? ? ? ? ?no_of_regs = 15;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?register_bits = bits (arm_insn_r->arm_insn, 0, 14);
> + ? ? ? ? ?no_of_regs = 14;
> + ? ? ? ?}
> + ? ? ?/* Get Rn. ?*/
> + ? ? ?reg_src1 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ? ?while (register_bits)
> + ? ? ? {
> + ? ? ? ? if (register_bits & 0x00000001)
> + ? ? ? ? ? register_list[register_count++] = 1;
> + ? ? ? ? register_bits = register_bits >> 1;
> + ? ? ? }
> +
> + ? ? ? ?/* Extra space for Base Register and CPSR; wihtout optimization. ?*/
> + ? ? ? ?record_buf[register_count] = reg_src1;
> + ? ? ? ?record_buf[register_count + 1] = ARM_PS_REGNUM;
> + ? ? ? ?arm_insn_r->reg_rec_count = register_count + 2;
> +
> + ? ? ? ?for (register_count = 0; register_count < no_of_regs; register_count++)
> + ? ? ? ? ?{
> + ? ? ? ? ? ?if ?(register_list[register_count])
> + ? ? ? ? ? ? ?{
> + ? ? ? ? ? ? ? ?/* Register_count gives total no of registers
> + ? ? ? ? ? ? ? ?And dually working as reg number. ?*/
> + ? ? ? ? ? ? ? ?record_buf[index] = register_count;
> + ? ? ? ? ? ? ? ?index++;
> + ? ? ? ? ? ? ?}
> + ? ? ? ? ?}
> +
> + ? ?}
> + ?else
> + ? ?{
> + ? ?/* It handles both STM(1) and STM(2). ?*/
> + ? ?addr_mode = bits (arm_insn_r->arm_insn, 23, 24);
> +
> + ? ?register_bits = bits (arm_insn_r->arm_insn, 0, 15);
> + ? ?/* Get Rn. ?*/
> + ? ?reg_src1 = bits (arm_insn_r->arm_insn, 16, 19);
> + ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[0]);
> + ? ?while (register_bits)
> + ? ? ?{
> + ? ? ? ?if (register_bits & 0x00000001)
> + ? ? ? ? ? register_count++;
> + ? ? ? ?register_bits = register_bits >> 1;
> + ? ? ?}
> +
> + ? ?switch (addr_mode)
> + ? ? ?{
> + ? ? ? ?/* Decrement after. ?*/
> + ? ? ? ?case 0:
> + ? ? ? ? ?start_address = (u_regval[0]) - (register_count * 4) + 4;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = register_count;
> + ? ? ? ? ?while (register_count)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?record_buf_mem[(register_count * 2) - 1] = start_address;
> + ? ? ? ? ? ? ?record_buf_mem[(register_count * 2) - 2] = 4;
> + ? ? ? ? ? ? ?start_address = start_address + 4;
> + ? ? ? ? ? ? ?register_count--;
> + ? ? ? ? ? ?}
> + ? ? ? ?break;
> +
> + ? ? ? ?/* Increment after. ?*/
> + ? ? ? ?case 1:
> + ? ? ? ? ?start_address = u_regval[0];
> + ? ? ? ? ?arm_insn_r->mem_rec_count = register_count;
> + ? ? ? ? ?while (register_count)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?record_buf_mem[(register_count * 2) - 1] = start_address;
> + ? ? ? ? ? ? ?record_buf_mem[(register_count * 2) - 2] = 4;
> + ? ? ? ? ? ? ?start_address = start_address + 4;
> + ? ? ? ? ? ? ?register_count--;
> + ? ? ? ? ? ?}
> + ? ? ? ?break;
> +
> + ? ? ? ?/* Decrement before. ?*/
> + ? ? ? ?case 2:
> +
> + ? ? ? ? ?start_address = (u_regval[0]) - (register_count * 4);
> + ? ? ? ? ?arm_insn_r->mem_rec_count = register_count;
> + ? ? ? ? ?while (register_count)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?record_buf_mem[(register_count * 2) - 1] = start_address;
> + ? ? ? ? ? ? ?record_buf_mem[(register_count * 2) - 2] = 4;
> + ? ? ? ? ? ? ?start_address = start_address + 4;
> + ? ? ? ? ? ? ?register_count--;
> + ? ? ? ? ? ?}
> + ? ? ? ?break;
> +
> + ? ? ? ?/* Increment before. ?*/
> + ? ? ? ?case 3:
> + ? ? ? ? ?start_address = u_regval[0] + 4;
> + ? ? ? ? ?arm_insn_r->mem_rec_count = register_count;
> + ? ? ? ? ?while (register_count)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?record_buf_mem[(register_count * 2) - 1] = start_address;
> + ? ? ? ? ? ? ?record_buf_mem[(register_count * 2) - 2] = 4;
> + ? ? ? ? ? ? ?start_address = start_address + 4;
> + ? ? ? ? ? ? ?register_count--;
> + ? ? ? ? ? ?}
> + ? ? ? ?break;
> +
> + ? ? ? ?default:
> + ? ? ? ? ?gdb_assert_not_reached ("no decoding pattern found");
> + ? ? ? ?break;
> + ? ? ?}
> +
> + ? ?/* Base register also changes; based on condition and W bit. ?*/
> + ? ?/* We save it anyway without optimization. ?*/
> + ? ?record_buf[0] = reg_src1;
> + ? ?arm_insn_r->reg_rec_count = 1;
> + ? ?}
> +
> + ?REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (arm_insn_r->arm_mems, arm_insn_r->mem_rec_count, record_buf_mem);
> + ?return 0;
> +}
> +
> +/* Handling opcode 101 insns. ?*/
> +
> +static int
> +arm_record_b_bl (insn_decode_record *arm_insn_r)
> +{
> +
> + ?uint32_t record_buf[8];
> +
> + ?/* Handle B, BL, BLX(1) insns. ?*/
> + ?/* B simply branches so we do nothing here. ?*/
> + ?/* Note: BLX(1) doesnt fall here but instead it falls into
> extension space. ?*/
> + ?if (bit (arm_insn_r->arm_insn, 24))
> + ?{
> + ? ?record_buf[0] = ARM_LR_REGNUM;
> + ? ?arm_insn_r->reg_rec_count = 1;
> + ?}
> +
> + ?REG_ALLOC (arm_insn_r->arm_regs, arm_insn_r->reg_rec_count, record_buf);
> +
> + ?return 0;
> +}
> +
> +/* Handling opcode 110 insns. ?*/
> +
> +static int
> +arm_record_coproc (insn_decode_record *arm_insn_r)
> +{
> + ?printf_unfiltered (_("Process record does not support instruction "
> + ? ? ? ? ? ? ? ? ? ? "0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? arm_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ? ? paddress (arm_insn_r->gdbarch, arm_insn_r->this_addr));
> +
> + ? return -1;
> +}
> +
> +/* Handling opcode 111 insns. ?*/
> +
> +static int
> +arm_record_coproc_data_proc (insn_decode_record *arm_insn_r)
> +{
> + ? struct gdbarch_tdep *tdep = gdbarch_tdep (arm_insn_r->gdbarch);
> + ? struct regcache *reg_cache = arm_insn_r->regcache;
> + ? uint32_t ret = 0;
> +
> + ? /* Handle SWI insn; system call would be handled over here. ?*/
> +
> + ? arm_insn_r->opcode = bits (arm_insn_r->arm_insn, 24, 27);
> + ? if (15 == arm_insn_r->opcode)
> + ? {
> + ? ? ? ?/* Handle arm syscall insn. ?*/
> + ? ? ? ?if (tdep->arm_swi_record != NULL)
> + ? ? ? ? ?{
> + ? ? ? ? ? ?ret = tdep->arm_swi_record(reg_cache);
> + ? ? ? ? ?}
> + ? ? ? ?else
> + ? ? ? ? ?{
> + ? ? ? ? ? ?printf_unfiltered (_("no syscall record support\n"));
> + ? ? ? ? ? ?ret = -1;
> + ? ? ? ? ?}
> + ? }
> +
> + ? printf_unfiltered (_("Process record does not support instruction "
> + ? ? ? ? ? ? ? ? ? ? ? ? "0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? ? arm_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ? ? ? ? paddress (arm_insn_r->gdbarch,
> arm_insn_r->this_addr));
> + ? return ret;
> +}
> +
> +/* Handling opcode 000 insns. ?*/
> +
> +static int
> +thumb_record_shift_add_sub (insn_decode_record *thumb_insn_r)
> +{
> + ?uint32_t record_buf[8];
> + ?uint32_t reg_src1 = 0;
> +
> + ?reg_src1 = bits (thumb_insn_r->arm_insn, 0, 2);
> +
> + ?record_buf[0] = ARM_PS_REGNUM;
> + ?record_buf[1] = reg_src1;
> + ?thumb_insn_r->reg_rec_count = 2;
> +
> + ?REG_ALLOC (thumb_insn_r->arm_regs, thumb_insn_r->reg_rec_count, record_buf);
> +
> + ?return 0;
> +}
> +
> +
> +/* Handling opcode 001 insns. ?*/
> +
> +static int
> +thumb_record_add_sub_cmp_mov (insn_decode_record *thumb_insn_r)
> +{
> + ?uint32_t record_buf[8];
> + ?uint32_t reg_src1 = 0;
> +
> + ?reg_src1 = bits (thumb_insn_r->arm_insn, 8, 10);
> +
> + ?record_buf[0] = ARM_PS_REGNUM;
> + ?record_buf[1] = reg_src1;
> + ?thumb_insn_r->reg_rec_count = 2;
> +
> + ?REG_ALLOC (thumb_insn_r->arm_regs, thumb_insn_r->reg_rec_count, record_buf);
> +
> + ?return 0;
> +}
> +
> +/* Handling opcode 010 insns. ?*/
> +
> +static int
> +thumb_record_ld_st_reg_offset (insn_decode_record *thumb_insn_r)
> +{
> + ?struct regcache *reg_cache = ?thumb_insn_r->regcache;
> + ?uint32_t record_buf[8], record_buf_mem[8];
> +
> + ?uint32_t reg_src1 = 0, reg_src2 = 0;
> + ?uint32_t opcode1 = 0, opcode2 = 0, opcode3 = 0;
> +
> + ?ULONGEST u_regval[2] = {0};
> +
> + ?opcode1 = bits (thumb_insn_r->arm_insn, 10, 12);
> +
> + ?if (bit (thumb_insn_r->arm_insn, 12))
> + ? ?{
> + ? ? ?/* Handle load/store register offset. ?*/
> + ? ? ?opcode2 = bits (thumb_insn_r->arm_insn, 9, 10);
> + ? ? ?if ((opcode2 >= 12) && (opcode2 <= 15))
> + ? ? ? ?{
> + ? ? ? ? ?/* LDR(2), LDRB(2) , LDRH(2), LDRSB, LDRSH. ?*/
> + ? ? ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn,0, 2);
> + ? ? ? ? ?record_buf[0] = reg_src1;
> + ? ? ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else if ((opcode2 >= 8) && (opcode2 <= 10))
> + ? ? ? ?{
> + ? ? ? ? ?/* STR(2), STRB(2), STRH(2) . ?*/
> + ? ? ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 3, 5);
> + ? ? ? ? ?reg_src2 = bits (thumb_insn_r->arm_insn, 6, 8);
> + ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[0]);
> + ? ? ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src2
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval[1]);
> + ? ? ? ? ?if (8 == opcode2)
> + ? ? ? ? ? ?record_buf_mem[0] = 4; ? ?/* STR (2). ?*/
> + ? ? ? ? ?else if (10 == opcode2)
> + ? ? ? ? ? ?record_buf_mem[0] = 1; ? ?/* ?STRB (2). ?*/
> + ? ? ? ? ?else if (9 == opcode2)
> + ? ? ? ? ? ?record_buf_mem[0] = 2; ? ?/* STRH (2). ?*/
> + ? ? ? ? ?record_buf_mem[1] = u_regval[0] + u_regval[1];
> + ? ? ? ? ?thumb_insn_r->mem_rec_count = 1;
> + ? ? ? ?}
> + ? ?}
> + ?else if (bit (thumb_insn_r->arm_insn, 11))
> + ? ?{
> + ? ? ?/* Handle load from literal pool. ?*/
> + ? ? ?/* LDR(3). ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 8, 10);
> + ? ? ?record_buf[0] = reg_src1;
> + ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if (opcode1)
> + ? ?{
> + ? ? ?opcode2 = bits (thumb_insn_r->arm_insn, 8, 9);
> + ? ? ?opcode3 = bits (thumb_insn_r->arm_insn, 0, 2);
> + ? ? ?if ((3 == opcode2) && (!opcode3))
> + ? ? ? ?{
> + ? ? ? ? ?/* Branch with exchange. ?*/
> + ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?/* Format 8; special data processing insns. ?*/
> + ? ? ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 0, 2);
> + ? ? ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ? ? ?record_buf[1] = reg_src1;
> + ? ? ? ? ?thumb_insn_r->reg_rec_count = 2;
> + ? ? ? ?}
> + ? ?}
> + ?else
> + ? ?{
> + ? ? ?/* Format 5; data processing insns. ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 0, 2);
> + ? ? ?if (bit (thumb_insn_r->arm_insn, 7))
> + ? ? ? ?{
> + ? ? ? ? ?reg_src1 = reg_src1 + 8;
> + ? ? ? ?}
> + ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ?record_buf[1] = reg_src1;
> + ? ? ?thumb_insn_r->reg_rec_count = 2;
> + ? ?}
> +
> + ?REG_ALLOC (thumb_insn_r->arm_regs, thumb_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (thumb_insn_r->arm_mems, thumb_insn_r->mem_rec_count,
> + ? ? ? ? ? ? record_buf_mem);
> +
> + ?return 0;
> +}
> +
> +/* Handling opcode 001 insns. ?*/
> +
> +static int
> +thumb_record_ld_st_imm_offset (insn_decode_record *thumb_insn_r)
> +{
> + ?struct regcache *reg_cache = thumb_insn_r->regcache;
> + ?uint32_t record_buf[8], record_buf_mem[8];
> +
> + ?uint32_t reg_src1 = 0;
> + ?uint32_t opcode = 0, immed_5 = 0;
> +
> + ?ULONGEST u_regval = 0;
> +
> + ?opcode = bits (thumb_insn_r->arm_insn, 11, 12);
> +
> + ?if (opcode)
> + ? ?{
> + ? ? ?/* LDR(1). ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 0, 2);
> + ? ? ?record_buf[0] = reg_src1;
> + ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else
> + ? ?{
> + ? ? ?/* STR(1). ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 3, 5);
> + ? ? ?immed_5 = bits (thumb_insn_r->arm_insn, 6, 10);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval);
> + ? ? ?record_buf_mem[0] = 4;
> + ? ? ?record_buf_mem[1] = u_regval + (immed_5 * 4);
> + ? ? ?thumb_insn_r->mem_rec_count = 1;
> + ? ?}
> +
> + ?REG_ALLOC (thumb_insn_r->arm_regs, thumb_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (thumb_insn_r->arm_mems, thumb_insn_r->mem_rec_count,
> + ? ? ? ? ? ? record_buf_mem);
> +
> + ?return 0;
> +}
> +
> +/* Handling opcode 100 insns. ?*/
> +
> +static int
> +thumb_record_ld_st_stack (insn_decode_record *thumb_insn_r)
> +{
> + ?struct regcache *reg_cache = thumb_insn_r->regcache;
> + ?uint32_t record_buf[8], record_buf_mem[8];
> +
> + ?uint32_t reg_src1 = 0;
> + ?uint32_t opcode = 0, immed_8 = 0, immed_5 = 0;
> +
> + ?ULONGEST u_regval = 0;
> +
> + ?opcode = bits (thumb_insn_r->arm_insn, 11, 12);
> +
> + ?if (3 == opcode)
> + ? ?{
> + ? ? ?/* LDR(4). ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 8, 10);
> + ? ? ?record_buf[0] = reg_src1;
> + ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if (1 == opcode)
> + ? ?{
> + ? ? ?/* LDRH(1). ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 0, 2);
> + ? ? ?record_buf[0] = reg_src1;
> + ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if (2 == opcode)
> + ? ?{
> + ? ? ?/* STR(3). ?*/
> + ? ? ?immed_8 = bits (thumb_insn_r->arm_insn, 0, 7);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, ARM_SP_REGNUM
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval);
> + ? ? ?record_buf_mem[0] = 4;
> + ? ? ?record_buf_mem[1] = u_regval + (immed_8 * 4);
> + ? ? ?thumb_insn_r->mem_rec_count = 1;
> + ? ?}
> + ?else if (0 == opcode)
> + ? ?{
> + ? ? ?/* STRH(1). ?*/
> + ? ? ?immed_5 = bits (thumb_insn_r->arm_insn, 6, 10);
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 3, 5);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval);
> + ? ? ?record_buf_mem[0] = 2;
> + ? ? ?record_buf_mem[1] = u_regval + (immed_5 * 2);
> + ? ? ?thumb_insn_r->mem_rec_count = 1;
> + ? ?}
> +
> + ?REG_ALLOC (thumb_insn_r->arm_regs, thumb_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (thumb_insn_r->arm_mems, thumb_insn_r->mem_rec_count,
> + ? ? ? ? ? ? record_buf_mem);
> +
> + ?return 0;
> +}
> +
> +/* Handling opcode 101 insns. ?*/
> +
> +static int
> +thumb_record_misc (insn_decode_record *thumb_insn_r)
> +{
> + ?struct regcache *reg_cache = thumb_insn_r->regcache;
> +
> + ?uint32_t opcode = 0, opcode1 = 0, opcode2 = 0;
> + ?uint32_t register_bits = 0, register_count = 0;
> + ?uint32_t register_list[8] = {0}, index = 0, start_address = 0;
> + ?uint32_t record_buf[24], record_buf_mem[48];
> + ?uint32_t reg_src1;
> +
> + ?ULONGEST u_regval = 0;
> +
> + ?opcode = bits (thumb_insn_r->arm_insn, 11, 12);
> + ?opcode1 = bits (thumb_insn_r->arm_insn, 8, 12);
> + ?opcode2 = bits (thumb_insn_r->arm_insn, 9, 12);
> +
> + ?if (14 == opcode2)
> + ? ?{
> + ? ? ?/* POP. ?*/
> + ? ? ?register_bits = bits (thumb_insn_r->arm_insn, 0, 7);
> + ? ? ?while (register_bits)
> + ? ? ? ?{
> + ? ? ? ? ?if (register_bits & 0x00000001)
> + ? ? ? ? ? ?register_list[register_count++] = 1;
> + ? ? ? ? ?register_bits = register_bits >> 1;
> + ? ? ? ?}
> + ? ? ?record_buf[register_count] = ARM_PS_REGNUM;
> + ? ? ?record_buf[register_count + 1] = ARM_SP_REGNUM;
> + ? ? ?thumb_insn_r->reg_rec_count = register_count + 2;
> + ? ? ?for (register_count = 0; register_count < 8; register_count++)
> + ? ? ? ?{
> + ? ? ? ? ?if ?(register_list[register_count])
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?record_buf[index] = register_count;
> + ? ? ? ? ? ? ?index++;
> + ? ? ? ? ? ?}
> + ? ? ? ?}
> + ? ?}
> + ?else if (10 == opcode2)
> + ? ?{
> + ? ? ?/* PUSH. ?*/
> + ? ? ?register_bits = bits (thumb_insn_r->arm_insn, 0, 7);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, ARM_PC_REGNUM
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval);
> + ? ? ?while (register_bits)
> + ? ? ? ?{
> + ? ? ? ? ?if (register_bits & 0x00000001)
> + ? ? ? ? ? ? register_count++;
> + ? ? ? ? ?register_bits = register_bits >> 1;
> + ? ? ? ?}
> + ? ? ?start_address = u_regval - ?\
> + ? ? ? ? ? ? ? ? ? (4 * (bit (thumb_insn_r->arm_insn, 8) + register_count));
> + ? ? ?thumb_insn_r->mem_rec_count = register_count;
> + ? ? ?while (register_count)
> + ? ? ? ?{
> + ? ? ? ? ?record_buf_mem[(register_count * 2) - 1] = start_address;
> + ? ? ? ? ?record_buf_mem[(register_count * 2) - 2] = 4;
> + ? ? ? ? ?start_address = start_address + 4;
> + ? ? ? ? ?register_count--;
> + ? ? ? ?}
> + ? ? ?record_buf[0] = ARM_SP_REGNUM;
> + ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if (0x1E == opcode1)
> + ? ?{
> + ? ? ?/* BKPT insn. ?*/
> + ? ? ?/* Handle enhanced software breakpoint insn, BKPT. ?*/
> + ? ? ?/* CPSR is changed to be executed in ARM state, ?disabling normal
> + ? ? ? ?interrupts, entering abort mode. ?*/
> + ? ? ?/* According to high vector configuration PC is set. ?*/
> + ? ? ?/* FIX ME ? ?what if user hit breakpoint and type reverse, in
> + ? ? ? ?that case, we need to go back with previous CPSR and
> + ? ? ? ?Program Counter. ?*/
> + ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ?record_buf[1] = ARM_LR_REGNUM;
> + ? ? ?thumb_insn_r->reg_rec_count = 2;
> + ? ? ?/* Save SPSR also;how?. ?*/
> + ? ? ?printf_unfiltered (_("Process record does not support instruction "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? "0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? ? ?thumb_insn_r->arm_insn,
> + ? ? ? ? ? ? ? ? ? ? paddress (thumb_insn_r->gdbarch,
> thumb_insn_r->this_addr));
> + ? ? ?return -1;
> + ? ?}
> + ?else if ((0 == opcode) || (1 == opcode))
> + ? ?{
> + ? ? ?/* ADD(5), ADD(6). ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 8, 10);
> + ? ? ?record_buf[0] = reg_src1;
> + ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if (2 == opcode)
> + ? ?{
> + ? ? ?/* ADD(7), SUB(4). ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 8, 10);
> + ? ? ?record_buf[0] = ARM_SP_REGNUM;
> + ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ?}
> +
> + ?REG_ALLOC (thumb_insn_r->arm_regs, thumb_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (thumb_insn_r->arm_mems, thumb_insn_r->mem_rec_count,
> + ? ? ? ? ? ? record_buf_mem);
> +
> + ?return 0;
> +}
> +
> +/* Handling opcode 110 insns. ?*/
> +
> +static int
> +thumb_record_ldm_stm_swi (insn_decode_record *thumb_insn_r)
> +{
> + ?struct gdbarch_tdep *tdep = gdbarch_tdep (thumb_insn_r->gdbarch);
> + ?struct regcache *reg_cache = thumb_insn_r->regcache;
> +
> + ?uint32_t ret = 0;
> + ?uint32_t reg_src1 = 0;
> + ?uint32_t opcode1 = 0, opcode2 = 0, register_bits = 0, register_count = 0;
> + ?uint32_t register_list[8] = {0}, index = 0, start_address = 0;
> + ?uint32_t record_buf[24], record_buf_mem[48];
> +
> + ?ULONGEST u_regval = 0;
> +
> + ?opcode1 = bits (thumb_insn_r->arm_insn, 8, 12);
> + ?opcode2 = bits (thumb_insn_r->arm_insn, 11, 12);
> +
> + ?if (1 == opcode2)
> + ? ?{
> +
> + ? ? ?/* LDMIA. ?*/
> + ? ? ?register_bits = bits (thumb_insn_r->arm_insn, 0, 7);
> + ? ? ?/* Get Rn. ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 8, 10);
> + ? ? ?while (register_bits)
> + ? ? ? ?{
> + ? ? ? ? ?if (register_bits & 0x00000001)
> + ? ? ? ? ? ?register_list[register_count++] = 1;
> + ? ? ? ? ?register_bits = register_bits >> 1;
> + ? ? ? ?}
> + ? ? ?record_buf[register_count] = reg_src1;
> + ? ? ?thumb_insn_r->reg_rec_count = register_count + 1;
> + ? ? ?for (register_count = 0; register_count < 8; register_count++)
> + ? ? ? ?{
> + ? ? ? ? ?if (register_list[register_count])
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?record_buf[index] = register_count;
> + ? ? ? ? ? ? ?index++;
> + ? ? ? ? ? ?}
> + ? ? ? ?}
> + ? ?}
> + ?else if (0 == opcode2)
> + ? ?{
> + ? ? ?/* It handles both STMIA. ?*/
> + ? ? ?register_bits = bits (thumb_insn_r->arm_insn, 0, 7);
> + ? ? ?/* Get Rn. ?*/
> + ? ? ?reg_src1 = bits (thumb_insn_r->arm_insn, 8, 10);
> + ? ? ?regcache_raw_read_unsigned (reg_cache, reg_src1, &u_regval);
> + ? ? ?while (register_bits)
> + ? ? ? ?{
> + ? ? ? ? ?if (register_bits & 0x00000001)
> + ? ? ? ? ? ? register_count++;
> + ? ? ? ? ?register_bits = register_bits >> 1;
> + ? ? ? ?}
> + ? ? ?start_address = u_regval;
> + ? ? ?thumb_insn_r->mem_rec_count = register_count;
> + ? ? ?while (register_count)
> + ? ? ? ?{
> + ? ? ? ? ?record_buf_mem[(register_count * 2) - 1] = start_address;
> + ? ? ? ? ?record_buf_mem[(register_count * 2) - 2] = 4;
> + ? ? ? ? ?start_address = start_address + 4;
> + ? ? ? ? ?register_count--;
> + ? ? ? ?}
> + ? ?}
> + ?else if (0x1F == opcode1)
> + ? ? {
> + ? ? ? ?/* Handle arm syscall insn. ?*/
> + ? ? ? ?if (tdep->arm_swi_record != NULL)
> + ? ? ? ? ?{
> + ? ? ? ? ? ?ret = tdep->arm_swi_record(reg_cache);
> + ? ? ? ? ?}
> + ? ? ? ?else
> + ? ? ? ? ?{
> + ? ? ? ? ? ?printf_unfiltered (_("no syscall record support\n"));
> + ? ? ? ? ? ?return -1;
> + ? ? ? ? ?}
> + ? ? }
> +
> + ?/* B (1), conditional branch is automatically taken care in process_record,
> + ? ? as PC is saved there. ?*/
> +
> + ?REG_ALLOC (thumb_insn_r->arm_regs, thumb_insn_r->reg_rec_count, record_buf);
> + ?MEM_ALLOC (thumb_insn_r->arm_mems, thumb_insn_r->mem_rec_count,
> + ? ? ? ? ? ? record_buf_mem);
> +
> + ?return ret;
> +}
> +
> +/* Handling opcode 111 insns. ?*/
> +
> +static int
> +thumb_record_branch (insn_decode_record *thumb_insn_r)
> +{
> + ?uint32_t record_buf[8];
> + ?uint32_t bits_h = 0;
> +
> + ?bits_h = bits (thumb_insn_r->arm_insn, 11, 12);
> +
> + ?if (2 == bits_h || 3 == bits_h)
> + ? ?{
> + ? ? ?/* BL */
> + ? ? ?record_buf[0] = ARM_LR_REGNUM;
> + ? ? ?thumb_insn_r->reg_rec_count = 1;
> + ? ?}
> + ?else if (1 == bits_h)
> + ? ?{
> + ? ? ?/* BLX(1). */
> + ? ? ?record_buf[0] = ARM_PS_REGNUM;
> + ? ? ?record_buf[1] = ARM_LR_REGNUM;
> + ? ? ?thumb_insn_r->reg_rec_count = 2;
> + ? ?}
> +
> + ? /* B(2) is automatically taken care in process_record, as PC is saved
> + ? ? there. ?*/
> +
> + ?REG_ALLOC (thumb_insn_r->arm_regs, thumb_insn_r->reg_rec_count, record_buf);
> +
> + ?return 0;
> +}
> +
> +
> +/* Decode arm/thumb insn depending on condition cods and opcodes; and
> dispatch it. ?*/
> +
> +static int
> +decode_insn (insn_decode_record *arm_record, record_type_t record_type,
> + ? ? ? ? ? ? ? ?uint32_t insn_size)
> +{
> +
> + ?/* (Starting from numerical 0); bits 25, 26, 27 decodes type of arm
> instruction. ?*/
> + ?static int (*const arm_handle_insn[8])
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?(insn_decode_record*) =
> + ?{
> + ? ? ?arm_record_data_proc_misc_ld_str, ? ?/* 000. ?*/
> + ? ? ?arm_record_data_proc_imm, ? ? ? ? ? ?/* 001. ?*/
> + ? ? ?arm_record_ld_st_imm_offset, ? ? ? ? /* 010. ?*/
> + ? ? ?arm_record_ld_st_reg_offset, ? ? ? ? /* 011. ?*/
> + ? ? ?arm_record_ld_st_multiple, ? ? ? ? ? /* 100. ?*/
> + ? ? ?arm_record_b_bl, ? ? ? ? ? ? ? ? ? ? ? ? ? ?/* 101. ?*/
> + ? ? ?arm_record_coproc, ? ? ? ? ? ? ? ? ? /* 110. ?*/
> + ? ? ?arm_record_coproc_data_proc ? ? ? ? ?/* 111. ?*/
> + ?};
> +
> + ?/* (Starting from numerical 0); bits 13,14,15 decodes type of thumb
> instruction. ?*/
> + ?static int (*const thumb_handle_insn[8])
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?(insn_decode_record*) =
> + ?{ \
> + ? ? ?thumb_record_shift_add_sub, ? ? ? ? /* 000. ?*/
> + ? ? ?thumb_record_add_sub_cmp_mov, ? ? ? /* 001. ?*/
> + ? ? ?thumb_record_ld_st_reg_offset, ? ? ?/* 010. ?*/
> + ? ? ?thumb_record_ld_st_imm_offset, ? ? ?/* 011. ?*/
> + ? ? ?thumb_record_ld_st_stack, ? ? ? ? ? /* 100. ?*/
> + ? ? ?thumb_record_misc, ? ? ? ? ? ? ? ? ?/* 101. ?*/
> + ? ? ?thumb_record_ldm_stm_swi, ? ? ? ? ? /* 110. ?*/
> + ? ? ?thumb_record_branch ? ? ? ? ? ? ? ? /* 111. ?*/
> + ?};
> +
> + ?struct
> + ? ?{
> + ? ? ?gdb_byte buf[insn_size];
> + ? ?} u_buf;
> +
> + ?uint32_t ret=0, insn_id = 0;
> +
> + ?memset (&u_buf, 0, sizeof(u_buf));
> + ?if (target_read_memory (arm_record->this_addr, &u_buf.buf[0], insn_size))
> + ? ?{
> + ? ? ?if (record_debug)
> + ? ? ? ?{
> + ? ? ? ? ?printf_unfiltered (_("Process record: error reading memory at "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? "addr %s len = %d.\n"),
> + ? ? ? ? ?paddress (arm_record->gdbarch, arm_record->this_addr), insn_size);
> + ? ? ? ? ?return -1;
> + ? ? ? ?}
> + ? ?}
> + ?else if (ARM_RECORD == record_type)
> + ? ?{
> + ? ? ?arm_record->arm_insn = (uint32_t) extract_unsigned_integer (&u_buf.buf[0]
> + ? ? ? ? ? ? , ARM_INSN_SIZE_BYTES , gdbarch_byte_order (arm_record->gdbarch));
> + ? ? ?arm_record->cond = bits (arm_record->arm_insn, 28, 31);
> + ? ? ?insn_id = bits (arm_record->arm_insn, 25, 27);
> + ? ? ?arm_record_extension_space (arm_record);
> + ? ? ?/* if this insn has fallen into extension space then we need
> not decode it anymore. ?*/
> + ? ? ?if (!INSN_RECORDED(arm_record))
> + ? ? ? ?{
> + ? ? ? ? ?arm_handle_insn[insn_id] (arm_record);
> + ? ? ? ?}
> + ? ?}
> + ?else if (THUMB_RECORD == record_type)
> + ? ?{
> + ? ? ?/* As thumb does not have condition codes, we set negative. ?*/
> + ? ? ?arm_record->cond = -1;
> + ? ? ?arm_record->arm_insn = (uint32_t) extract_unsigned_integer (&u_buf.buf[0]
> + ? ? ? ? ? , THUMB_INSN_SIZE_BYTES , gdbarch_byte_order
> (arm_record->gdbarch));
> + ? ? ?insn_id = bits (arm_record->arm_insn, 13, 15);
> + ? ? ?ret = thumb_handle_insn[insn_id] (arm_record);
> + ? ?}
> + ?else if (THUMB2_RECORD == record_type)
> + ? ?{
> + ? ? ?printf_unfiltered (_("Process record doesnt support thumb32 instruction "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? "0x%0x at address %s.\n"),
> + ? ? ? ? ? ? ? ? ? ? ? ? ?arm_record->arm_insn,
> + ? ? ? ? ? ? ? ? ? ? paddress (arm_record->gdbarch,
> arm_record->this_addr));
> + ? ? ?ret = -1;
> + ? ?}
> + ?else
> + ? ?{
> + ? ? ?/* Throw assertion. ?*/
> + ? ? ?gdb_assert (0);
> + ? ?}
> +
> + ?return ret;
> +}
> +
> +/* Parse the current instruction and record the values of the registers and
> + ? memory that will be changed in current instruction to "record_arch_list".
> + ? Return -1 if something is wrong. ?*/
> +
> +int
> +arm_process_record (struct gdbarch *gdbarch, struct regcache *regcache,
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? CORE_ADDR insn_addr)
> +{
> +
> + ?enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
> + ?uint32_t no_of_rec = 0;
> + ?uint32_t ret = 0;
> + ?ULONGEST t_bit = 0, insn_id = 0;
> +
> + ?ULONGEST u_regval = 0;
> +
> + ?insn_decode_record arm_record;
> +
> + ?memset (&arm_record, 0, sizeof (insn_decode_record));
> + ?arm_record.regcache = regcache;
> + ?arm_record.this_addr = insn_addr;
> + ?arm_record.gdbarch = gdbarch;
> +
> +
> + ?if (record_debug > 1)
> + ? ?{
> + ? ? ?fprintf_unfiltered (gdb_stdlog, "Process record: arm_process_record "
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?"addr = %s\n",
> + ? ? ?paddress (gdbarch, arm_record.this_addr));
> + ? ?}
> +
> + ?/* Check the insn, whether it is thumb or arm one. ?*/
> +
> + ?t_bit = arm_psr_thumb_bit (arm_record.gdbarch);
> + ?regcache_raw_read_unsigned (arm_record.regcache, ARM_PS_REGNUM
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?, &u_regval);
> +
> + ?if (!(u_regval & t_bit))
> + ? ?{
> + ? ? ?/* We are decoding arm insn. ?*/
> + ? ? ?ret = decode_insn (&arm_record, ARM_RECORD, ARM_INSN_SIZE_BYTES);
> + ? ?}
> + ?else
> + ? ?{
> + ? ? ?insn_id = bits (arm_record.arm_insn, 11, 15);
> + ? ? ?/* is it thumb2 insn? ?*/
> + ? ? ?if ((0x1D == insn_id) || (0x1E == insn_id) || (0x1F == insn_id))
> + ? ? ? ?{
> + ? ? ? ? ?ret = decode_insn (&arm_record, THUMB2_RECORD,
> THUMB_INSN_SIZE_BYTES);
> + ? ? ? ?}
> + ? ? ?else
> + ? ? ? ?{
> + ? ? ? ? ?/* We are decoding thumb insn. ?*/
> + ? ? ? ? ?ret = decode_insn (&arm_record, THUMB_RECORD,
> THUMB2_INSN_SIZE_BYTES);
> + ? ? ? ?}
> + ? ?}
> +
> + ?if (0 == ret)
> + ? ?{
> + ? ? ?/* Record registers. ?*/
> + ? ? ?record_arch_list_add_reg (arm_record.regcache, ARM_PC_REGNUM);
> + ? ? ?if (arm_record.arm_regs)
> + ? ? ? ?{
> + ? ? ? ? ?for (no_of_rec = 0; no_of_rec < arm_record.reg_rec_count;
> no_of_rec++)
> + ? ? ? ? ? ?{
> + ? ? ? ? ? ? ?if (record_arch_list_add_reg (arm_record.regcache \
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? , (arm_record.arm_regs[no_of_rec])))
> + ? ? ? ? ? ? ?ret = -1;
> + ? ? ? ? ? ?}
> + ? ? ? ?}
> + ? ? ?/* Record memories. ?*/
> + ? ? ?if (arm_record.arm_mems)
> + ? ? ? ?{
> + ? ? ? ? ?for (no_of_rec = 0; no_of_rec < arm_record.mem_rec_count;
> no_of_rec++)
> + ? ? ? ? ? {
> + ? ? ? ? ? ? ?if (record_arch_list_add_mem \
> + ? ? ? ? ? ? ? ?((CORE_ADDR)arm_record.arm_mems[no_of_rec].addr,
> + ? ? ? ? ? ? ? ?arm_record.arm_mems[no_of_rec].len))
> + ? ? ? ? ? ? ? ?ret = -1;
> + ? ? ? ? ? }
> + ? ? ? ?}
> +
> + ? ? ?if (record_arch_list_add_end ())
> + ? ? ? ?ret = -1;
> + ? ?}
> +
> + ?if (arm_record.arm_regs)
> + ? ?xfree (arm_record.arm_regs);
> + ?if (arm_record.arm_mems)
> + ? ?xfree (arm_record.arm_mems);
> +
> + ?return ret;
> +}
> diff -urN arm_orig/arm-tdep.h arm_new/arm-tdep.h
> --- arm_orig/arm-tdep.h 2011-07-28 09:40:19.000000000 +0530
> +++ arm_new/arm-tdep.h ?2011-07-28 09:41:06.000000000 +0530
> @@ -201,6 +201,9 @@
> ? /* Return the expected next PC if FRAME is stopped at a syscall
> ? ? ?instruction. ?*/
> ? CORE_ADDR (*syscall_next_pc) (struct frame_info *frame);
> +
> + ? /* Parse swi insn args, sycall record. ?*/
> + ?int (*arm_swi_record) (struct regcache *regcache);
> ?};
>
> ?/* Structures used for displaced stepping. ?*/
> @@ -331,6 +334,8 @@
> ? ?instruction? ?*/
> ?extern int arm_pc_is_thumb (struct gdbarch *, CORE_ADDR);
>
> +extern int arm_process_record (struct gdbarch *gdbarch,
> + ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? struct regcache *regcache, CORE_ADDR addr);
> ?/* Functions exported from armbsd-tdep.h. ?*/
>
> ?/* Return the appropriate register set for the core section identified
>