asm_cris_gnu.c File Reference

#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <rz_types.h>
#include <rz_lib.h>
#include <rz_util.h>
#include <rz_asm.h>
#include "disas-asm.h"

Go to the source code of this file.

Functions
static int	cris_buffer_read_memory (bfd_vma memaddr, bfd_byte *myaddr, ut32 length, struct disassemble_info *info)
static int	symbol_at_address (bfd_vma addr, struct disassemble_info *info)
static void	memory_error_func (int status, bfd_vma memaddr, struct disassemble_info *info)
bfd_boolean	cris_parse_disassembler_options (disassemble_info *info, int distype)
int	print_insn_crisv10_v32_with_register_prefix (bfd_vma vma, disassemble_info *info)
int	print_insn_crisv10_v32_without_register_prefix (bfd_vma vma, disassemble_info *info)
int	print_insn_cris_with_register_prefix (bfd_vma vma, disassemble_info *info)
int	print_insn_cris_without_register_prefix (bfd_vma vma, disassemble_info *info)
int	print_insn_crisv32_with_register_prefix (bfd_vma vma, disassemble_info *info)
int	print_insn_crisv32_without_register_prefix (bfd_vma vma, disassemble_info *info)
static int	disassemble (RzAsm *a, RzAsmOp *op, const ut8 *buf, int len)

Variables
static unsigned long	Offset = 0
static RzStrBuf *	buf_global = NULL
static unsigned char	bytes [8]
RzAsmPlugin	rz_asm_plugin_cris_gnu
RZ_API RzLibStruct	rizin_plugin

Function Documentation

cris_buffer_read_memory()

static int cris_buffer_read_memory ( bfd_vma  memaddr, bfd_byte *  myaddr, ut32  length, struct disassemble_info *  info  )

static

Definition at line 28 of file asm_cris_gnu.c.

                                                                                                                  {
    int delta = (memaddr - Offset);
    if (delta < 0) {
        return -1; // disable backward reads
    }
    if ((delta + length) > 8) {
        return -1;
    }
    memcpy(myaddr, bytes + delta, length);
    return 0;
}

References bytes, delta, length, memcpy(), and Offset.

Referenced by disassemble().

cris_parse_disassembler_options()

bfd_boolean cris_parse_disassembler_options	(	disassemble_info *	info,
		int	distype
	)

Referenced by disassemble().

disassemble()

static int disassemble ( RzAsm *  a, RzAsmOp *  op, const ut8 *  buf, int  len  )

static

Definition at line 61 of file asm_cris_gnu.c.

                                                                       {
    struct disassemble_info disasm_obj;
    int mode = 2;
    if (len < 4) {
        return -1;
    }
    buf_global = &op->buf_asm;
    Offset = a->pc;
    memcpy(bytes, buf, RZ_MIN(len, 8)); // TODO handle thumb
 
    /* prepare disassembler */
    memset(&disasm_obj, '\0', sizeof(struct disassemble_info));
    disasm_obj.disassembler_options = (a->bits == 64) ? "64" : "";
    disasm_obj.buffer = bytes;
    disasm_obj.read_memory_func = &cris_buffer_read_memory;
    disasm_obj.symbol_at_address_func = &symbol_at_address;
    disasm_obj.memory_error_func = &memory_error_func;
    disasm_obj.print_address_func = &generic_print_address_func;
    disasm_obj.endian = !a->big_endian;
    disasm_obj.fprintf_func = &generic_fprintf_func;
    disasm_obj.stream = stdout;
 
    if (a->cpu && *a->cpu) {
        // enum cris_disass_family { cris_dis_v0_v10, cris_dis_common_v10_v32, cris_dis_v32 };
        // 0: v0-v10
        // 1: v10-v32
        // 2: v32
        mode = 0;
        if (strstr(a->cpu, "v10")) {
            mode = 1;
        }
        if (strstr(a->cpu, "v32")) {
            mode = 2;
        }
    } else {
        mode = 2;
    }
    (void)cris_parse_disassembler_options(&disasm_obj, mode);
    if (a->syntax == RZ_ASM_SYNTAX_ATT) {
        switch (mode) {
        case 0:
            op->size = print_insn_cris_with_register_prefix((bfd_vma)Offset, &disasm_obj);
            break;
        case 1:
            op->size = print_insn_crisv10_v32_with_register_prefix((bfd_vma)Offset, &disasm_obj);
            break;
        default:
            op->size = print_insn_crisv32_with_register_prefix((bfd_vma)Offset, &disasm_obj);
            break;
        }
    } else {
        switch (mode) {
        case 0:
            op->size = print_insn_cris_without_register_prefix((bfd_vma)Offset, &disasm_obj);
            break;
        case 1:
            op->size = print_insn_crisv10_v32_without_register_prefix((bfd_vma)Offset, &disasm_obj);
            break;
        default:
            op->size = print_insn_crisv32_without_register_prefix((bfd_vma)Offset, &disasm_obj);
            break;
        }
    }
    if (op->size == -1) {
        rz_strbuf_set(&op->buf_asm, "(data)");
    }
    return op->size;
}

References a, buf_global, disassemble_info::buffer, bytes, cris_buffer_read_memory(), cris_parse_disassembler_options(), disassemble_info::disassembler_options, disassemble_info::endian, disassemble_info::fprintf_func, len, memcpy(), memory_error_func(), disassemble_info::memory_error_func, memset(), Offset, disassemble_info::print_address_func, print_insn_cris_with_register_prefix(), print_insn_cris_without_register_prefix(), print_insn_crisv10_v32_with_register_prefix(), print_insn_crisv10_v32_without_register_prefix(), print_insn_crisv32_with_register_prefix(), print_insn_crisv32_without_register_prefix(), disassemble_info::read_memory_func, RZ_ASM_SYNTAX_ATT, RZ_MIN, rz_strbuf_set(), disassemble_info::stream, symbol_at_address(), and disassemble_info::symbol_at_address_func.

memory_error_func()

static void memory_error_func ( int  status, bfd_vma  memaddr, struct disassemble_info *  info  )

static

Definition at line 44 of file asm_cris_gnu.c.

                                                                                          {
    //--
}

Referenced by disassemble().

print_insn_cris_with_register_prefix()

int print_insn_cris_with_register_prefix	(	bfd_vma	vma,
		disassemble_info *	info
	)

Definition at line 1557 of file cris-dis.c.

{
    if (!info->private_data && !cris_parse_disassembler_options (info, cris_dis_v0_v10)) {
        return -1;
    }
    return print_insn_cris_generic (vma, info, TRUE);
}

References cris_dis_v0_v10, cris_parse_disassembler_options(), info(), print_insn_cris_generic(), and TRUE.

Referenced by cris_get_disassembler(), and disassemble().

print_insn_cris_without_register_prefix()

int print_insn_cris_without_register_prefix	(	bfd_vma	vma,
		disassemble_info *	info
	)

Definition at line 1594 of file cris-dis.c.

{
    if (!info->private_data && !cris_parse_disassembler_options (info, cris_dis_v0_v10)) {
        return -1;
    }
    return print_insn_cris_generic (vma, info, FALSE);
}

References cris_dis_v0_v10, cris_parse_disassembler_options(), FALSE, info(), and print_insn_cris_generic().

Referenced by cris_get_disassembler(), and disassemble().

print_insn_crisv10_v32_with_register_prefix()

int print_insn_crisv10_v32_with_register_prefix	(	bfd_vma	vma,
		disassemble_info *	info
	)

Definition at line 1582 of file cris-dis.c.

{
    if (!info->private_data && !cris_parse_disassembler_options (info, cris_dis_common_v10_v32)) {
        return -1;
    }
    return print_insn_cris_generic (vma, info, TRUE);
}

References cris_dis_common_v10_v32, cris_parse_disassembler_options(), info(), print_insn_cris_generic(), and TRUE.

Referenced by cris_get_disassembler(), and disassemble().

print_insn_crisv10_v32_without_register_prefix()

int print_insn_crisv10_v32_without_register_prefix	(	bfd_vma	vma,
		disassemble_info *	info
	)

Definition at line 1619 of file cris-dis.c.

{
    if (!info->private_data && !cris_parse_disassembler_options (info, cris_dis_common_v10_v32)) {
        return -1;
    }
    return print_insn_cris_generic (vma, info, FALSE);
}

References cris_dis_common_v10_v32, cris_parse_disassembler_options(), FALSE, info(), and print_insn_cris_generic().

Referenced by cris_get_disassembler(), and disassemble().

print_insn_crisv32_with_register_prefix()

int print_insn_crisv32_with_register_prefix	(	bfd_vma	vma,
		disassemble_info *	info
	)

Definition at line 1569 of file cris-dis.c.

{
    if (!info->private_data && !cris_parse_disassembler_options (info, cris_dis_v32)) {
        return -1;
    }
    return print_insn_cris_generic (vma, info, TRUE);
}

References cris_dis_v32, cris_parse_disassembler_options(), info(), print_insn_cris_generic(), and TRUE.

Referenced by cris_get_disassembler(), and disassemble().

print_insn_crisv32_without_register_prefix()

int print_insn_crisv32_without_register_prefix	(	bfd_vma	vma,
		disassemble_info *	info
	)

Definition at line 1606 of file cris-dis.c.

{
    if (!info->private_data && !cris_parse_disassembler_options (info, cris_dis_v32)) {
        return -1;
    }
    return print_insn_cris_generic (vma, info, FALSE);
}

References cris_dis_v32, cris_parse_disassembler_options(), FALSE, info(), and print_insn_cris_generic().

Referenced by cris_get_disassembler(), and disassemble().

symbol_at_address()

static int symbol_at_address ( bfd_vma  addr, struct disassemble_info *  info  )

static

Definition at line 40 of file asm_cris_gnu.c.

                                                                          {
    return 0;
}

Referenced by disassemble().

Variable Documentation

buf_global

RzStrBuf* buf_global = NULL

static

Definition at line 25 of file asm_cris_gnu.c.

Referenced by disassemble().

bytes

unsigned char bytes[8]

static

Definition at line 26 of file asm_cris_gnu.c.

Referenced by cris_buffer_read_memory(), and disassemble().

Offset

unsigned long Offset = 0

static

Definition at line 24 of file asm_cris_gnu.c.

Referenced by cris_buffer_read_memory(), and disassemble().

rizin_plugin

RZ_API RzLibStruct rizin_plugin

Initial value:

= {
    .type = RZ_LIB_TYPE_ASM,
    .data = &rz_asm_plugin_cris_gnu,
    .version = RZ_VERSION
}

Definition at line 143 of file asm_cris_gnu.c.

rz_asm_plugin_cris_gnu

RzAsmPlugin rz_asm_plugin_cris_gnu

Initial value:

= {
    .name = "cris",
    .arch = "cris",
    .cpus = "v0,v10,v32",
    .license = "GPL3",
    .author = "pancake",
    .bits = 32,
    .endian = RZ_SYS_ENDIAN_LITTLE,
    .desc = "Axis Communications 32-bit embedded processor",
    .disassemble = &disassemble
}

Definition at line 130 of file asm_cris_gnu.c.