emu_seams.h

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#pragma once
 
#include <stdint.h>
#include <unicorn/unicorn.h>
 
#include "emu_elf.h"
#include "ra8_attributes.h"
 
#ifdef __cplusplus
extern "C" {
#endif

bool emulate_mve(uc_engine* uc, uint32_t pc0, const uint8_t code0[4]);

bool emu_mve_nocp_emulate(uc_engine* uc, uint32_t pc);

bool emu_mve_nocp_take(void);

bool emu_mve_nocp_spurious(uint32_t pc);

uint64_t emu_mve_emulated_count(void);

void long_shift_seam_install(uc_engine* uc, const emu_elf_source_t* elf);

bool emulate_long_shift_reg(uc_engine* uc, uint32_t pc, const uint8_t code[4]);

typedef enum : uint32_t {
  k_div0_hw1_mask     = 0xFFF0U,     
  k_div0_hw1_udiv     = 0xFBB0U,     
  k_div0_hw1_sdiv     = 0xFB90U,     
  k_div0_hw2_mask     = 0xF0F0U,     
  k_div0_hw2_fixed    = 0xF0F0U,     
  k_div0_reg_mask     = 0x000FU,     
  k_div0_rd_shift     = 8U,          
  k_div0_reg_sp       = 13U,         
  k_div0_reg_pc       = 15U,         
  k_div0_insn_len     = 4U,          
  k_div0_cfsr_divzero = 1U << 25U,   
  k_div0_int32_min    = 0x80000000U, 
  k_div0_udf_b0       = 0xF0U,       
  k_div0_udf_b1       = 0xF7U,       
  k_div0_udf_b3       = 0xA0U,       
} div0_field_t;

void div0_seam_install(const emu_elf_source_t* elf);

void div0_patch_sites(uc_engine* uc);

bool emulate_div0_patched(uc_engine* uc, uint32_t pc, const uint8_t code[4]);

bool emu_div0_fault_pending(void);

void emu_div0_clear_fault(void);

uint32_t emu_div0_fault_pc(void);

void emu_div0_count_trap(void);

void emu_div0_disarm(void);

bool on_invalid_insn(uc_engine* uc, void* user);

void emu_insn_seams_install(uc_engine* uc);

uint64_t emu_lob_emulated_count(void);

void div0_synth_usagefault(uc_engine* uc, uint32_t vtor_base);

void emu_fast_sd_enable(void);

void fast_sd_seam_install(uc_engine* uc, const emu_elf_source_t* elf);
 
#ifdef __cplusplus
}
#endif