From ada631cc5ff09e20a245fdca1afd4064be5eaa3d Mon Sep 17 00:00:00 2001 From: Bas Vermeulen Date: Sun, 26 Nov 2017 22:31:55 +0100 Subject: [PATCH] target aarch64: rework memory read/write to use 8/16/32 bit operations The existing code only used Memory Access mode to read memory, which uses 32 bit operations only. Rework the code to check the alignment/size of the read/write operation, and use the Memory Access mode to read aligned 32 bit memory. When using unaligned access, or 8 or 16 bit reads, use LDR{BHW} and STR{BHW} instead. The exception handling is still the same as it was before (meaning it breaks when things go wrong), but I can now read an 8 bit register correctly. Change-Id: I739a5ee825c0226ed4a89c32895cc2a047b8dc15 Signed-off-by: Bas Vermeulen Reviewed-on: http://openocd.zylin.com/4301 Tested-by: jenkins Reviewed-by: Matthias Welwarsky Reviewed-by: Paul Fertser --- src/target/aarch64.c | 443 +++++++++++++++++++++---------------- src/target/armv8_opcodes.c | 12 + src/target/armv8_opcodes.h | 14 ++ 3 files changed, 283 insertions(+), 186 deletions(-) diff --git a/src/target/aarch64.c b/src/target/aarch64.c index 5e5d3fc7..8354d3ac 100644 --- a/src/target/aarch64.c +++ b/src/target/aarch64.c @@ -54,7 +54,7 @@ static int aarch64_unset_breakpoint(struct target *target, static int aarch64_mmu(struct target *target, int *enabled); static int aarch64_virt2phys(struct target *target, target_addr_t virt, target_addr_t *phys); -static int aarch64_read_apb_ap_memory(struct target *target, +static int aarch64_read_cpu_memory(struct target *target, uint64_t address, uint32_t size, uint32_t count, uint8_t *buffer); #define foreach_smp_target(pos, head) \ @@ -1668,7 +1668,99 @@ static int aarch64_deassert_reset(struct target *target) return aarch64_init_debug_access(target); } -static int aarch64_write_apb_ap_memory(struct target *target, +static int aarch64_write_cpu_memory_slow(struct target *target, + uint32_t size, uint32_t count, const uint8_t *buffer, uint32_t *dscr) +{ + struct armv8_common *armv8 = target_to_armv8(target); + struct arm_dpm *dpm = &armv8->dpm; + struct arm *arm = &armv8->arm; + int retval; + + armv8_reg_current(arm, 1)->dirty = true; + + /* change DCC to normal mode if necessary */ + if (*dscr & DSCR_MA) { + *dscr &= ~DSCR_MA; + retval = mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, *dscr); + if (retval != ERROR_OK) + return retval; + } + + while (count) { + uint32_t data, opcode; + + /* write the data to store into DTRRX */ + if (size == 1) + data = *buffer; + else if (size == 2) + data = target_buffer_get_u16(target, buffer); + else + data = target_buffer_get_u32(target, buffer); + retval = mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DTRRX, data); + if (retval != ERROR_OK) + return retval; + + if (arm->core_state == ARM_STATE_AARCH64) + retval = dpm->instr_execute(dpm, ARMV8_MRS(SYSTEM_DBG_DTRRX_EL0, 1)); + else + retval = dpm->instr_execute(dpm, ARMV4_5_MRC(14, 0, 1, 0, 5, 0)); + if (retval != ERROR_OK) + return retval; + + if (size == 1) + opcode = armv8_opcode(armv8, ARMV8_OPC_STRB_IP); + else if (size == 2) + opcode = armv8_opcode(armv8, ARMV8_OPC_STRH_IP); + else + opcode = armv8_opcode(armv8, ARMV8_OPC_STRW_IP); + retval = dpm->instr_execute(dpm, opcode); + if (retval != ERROR_OK) + return retval; + + /* Advance */ + buffer += size; + --count; + } + + return ERROR_OK; +} + +static int aarch64_write_cpu_memory_fast(struct target *target, + uint32_t count, const uint8_t *buffer, uint32_t *dscr) +{ + struct armv8_common *armv8 = target_to_armv8(target); + struct arm *arm = &armv8->arm; + int retval; + + armv8_reg_current(arm, 1)->dirty = true; + + /* Step 1.d - Change DCC to memory mode */ + *dscr |= DSCR_MA; + retval = mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, *dscr); + if (retval != ERROR_OK) + return retval; + + + /* Step 2.a - Do the write */ + retval = mem_ap_write_buf_noincr(armv8->debug_ap, + buffer, 4, count, armv8->debug_base + CPUV8_DBG_DTRRX); + if (retval != ERROR_OK) + return retval; + + /* Step 3.a - Switch DTR mode back to Normal mode */ + *dscr &= ~DSCR_MA; + retval = mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, *dscr); + if (retval != ERROR_OK) + return retval; + + return ERROR_OK; +} + +static int aarch64_write_cpu_memory(struct target *target, uint64_t address, uint32_t size, uint32_t count, const uint8_t *buffer) { @@ -1677,71 +1769,27 @@ static int aarch64_write_apb_ap_memory(struct target *target, struct armv8_common *armv8 = target_to_armv8(target); struct arm_dpm *dpm = &armv8->dpm; struct arm *arm = &armv8->arm; - int total_bytes = count * size; - int total_u32; - int start_byte = address & 0x3; - int end_byte = (address + total_bytes) & 0x3; - struct reg *reg; uint32_t dscr; - uint8_t *tmp_buff = NULL; if (target->state != TARGET_HALTED) { LOG_WARNING("target not halted"); return ERROR_TARGET_NOT_HALTED; } - total_u32 = DIV_ROUND_UP((address & 3) + total_bytes, 4); - - /* Mark register R0 as dirty, as it will be used + /* Mark register X0 as dirty, as it will be used * for transferring the data. * It will be restored automatically when exiting * debug mode */ - reg = armv8_reg_current(arm, 1); - reg->dirty = true; - - reg = armv8_reg_current(arm, 0); - reg->dirty = true; + armv8_reg_current(arm, 0)->dirty = true; /* This algorithm comes from DDI0487A.g, chapter J9.1 */ - /* The algorithm only copies 32 bit words, so the buffer - * should be expanded to include the words at either end. - * The first and last words will be read first to avoid - * corruption if needed. - */ - tmp_buff = malloc(total_u32 * 4); - - if ((start_byte != 0) && (total_u32 > 1)) { - /* First bytes not aligned - read the 32 bit word to avoid corrupting - * the other bytes in the word. - */ - retval = aarch64_read_apb_ap_memory(target, (address & ~0x3), 4, 1, tmp_buff); - if (retval != ERROR_OK) - goto error_free_buff_w; - } - - /* If end of write is not aligned, or the write is less than 4 bytes */ - if ((end_byte != 0) || - ((total_u32 == 1) && (total_bytes != 4))) { - - /* Read the last word to avoid corruption during 32 bit write */ - int mem_offset = (total_u32-1) * 4; - retval = aarch64_read_apb_ap_memory(target, (address & ~0x3) + mem_offset, 4, 1, &tmp_buff[mem_offset]); - if (retval != ERROR_OK) - goto error_free_buff_w; - } - - /* Copy the write buffer over the top of the temporary buffer */ - memcpy(&tmp_buff[start_byte], buffer, total_bytes); - - /* We now have a 32 bit aligned buffer that can be written */ - /* Read DSCR */ retval = mem_ap_read_atomic_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_DSCR, &dscr); if (retval != ERROR_OK) - goto error_free_buff_w; + return retval; /* Set Normal access mode */ dscr = (dscr & ~DSCR_MA); @@ -1753,68 +1801,168 @@ static int aarch64_write_apb_ap_memory(struct target *target, /* Step 1.a+b - Write the address for read access into DBGDTR_EL0 */ /* Step 1.c - Copy value from DTR to R0 using instruction mrs DBGDTR_EL0, x0 */ retval = dpm->instr_write_data_dcc_64(dpm, - ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), address & ~0x3ULL); + ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), address); } else { /* Write R0 with value 'address' using write procedure */ /* Step 1.a+b - Write the address for read access into DBGDTRRX */ /* Step 1.c - Copy value from DTR to R0 using instruction mrc DBGDTRTXint, r0 */ dpm->instr_write_data_dcc(dpm, - ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address & ~0x3ULL); - + ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address); } - /* Step 1.d - Change DCC to memory mode */ - dscr = dscr | DSCR_MA; - retval += mem_ap_write_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, dscr); - if (retval != ERROR_OK) - goto error_unset_dtr_w; + if (size == 4 && (address % 4) == 0) + retval = aarch64_write_cpu_memory_fast(target, count, buffer, &dscr); + else + retval = aarch64_write_cpu_memory_slow(target, size, count, buffer, &dscr); - /* Step 2.a - Do the write */ - retval = mem_ap_write_buf_noincr(armv8->debug_ap, - tmp_buff, 4, total_u32, armv8->debug_base + CPUV8_DBG_DTRRX); - if (retval != ERROR_OK) - goto error_unset_dtr_w; - - /* Step 3.a - Switch DTR mode back to Normal mode */ - dscr = (dscr & ~DSCR_MA); - retval = mem_ap_write_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, dscr); - if (retval != ERROR_OK) - goto error_unset_dtr_w; + if (retval != ERROR_OK) { + /* Unset DTR mode */ + mem_ap_read_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, &dscr); + dscr &= ~DSCR_MA; + mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, dscr); + } /* Check for sticky abort flags in the DSCR */ retval = mem_ap_read_atomic_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_DSCR, &dscr); if (retval != ERROR_OK) - goto error_free_buff_w; + return retval; dpm->dscr = dscr; if (dscr & (DSCR_ERR | DSCR_SYS_ERROR_PEND)) { /* Abort occurred - clear it and exit */ LOG_ERROR("abort occurred - dscr = 0x%08" PRIx32, dscr); armv8_dpm_handle_exception(dpm); - goto error_free_buff_w; + return ERROR_FAIL; } /* Done */ - free(tmp_buff); return ERROR_OK; +} -error_unset_dtr_w: - /* Unset DTR mode */ - mem_ap_read_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, &dscr); - dscr = (dscr & ~DSCR_MA); - mem_ap_write_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, dscr); -error_free_buff_w: - LOG_ERROR("error"); - free(tmp_buff); - return ERROR_FAIL; +static int aarch64_read_cpu_memory_slow(struct target *target, + uint32_t size, uint32_t count, uint8_t *buffer, uint32_t *dscr) +{ + struct armv8_common *armv8 = target_to_armv8(target); + struct arm_dpm *dpm = &armv8->dpm; + struct arm *arm = &armv8->arm; + int retval; + + armv8_reg_current(arm, 1)->dirty = true; + + /* change DCC to normal mode (if necessary) */ + if (*dscr & DSCR_MA) { + *dscr &= DSCR_MA; + retval = mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, *dscr); + if (retval != ERROR_OK) + return retval; + } + + while (count) { + uint32_t opcode, data; + + if (size == 1) + opcode = armv8_opcode(armv8, ARMV8_OPC_LDRB_IP); + else if (size == 2) + opcode = armv8_opcode(armv8, ARMV8_OPC_LDRH_IP); + else + opcode = armv8_opcode(armv8, ARMV8_OPC_LDRW_IP); + retval = dpm->instr_execute(dpm, opcode); + if (retval != ERROR_OK) + return retval; + + if (arm->core_state == ARM_STATE_AARCH64) + retval = dpm->instr_execute(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DTRTX_EL0, 1)); + else + retval = dpm->instr_execute(dpm, ARMV4_5_MCR(14, 0, 1, 0, 5, 0)); + if (retval != ERROR_OK) + return retval; + + retval = mem_ap_read_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DTRTX, &data); + if (retval != ERROR_OK) + return retval; + + if (size == 1) + *buffer = (uint8_t)data; + else if (size == 2) + target_buffer_set_u16(target, buffer, (uint16_t)data); + else + target_buffer_set_u32(target, buffer, data); + + /* Advance */ + buffer += size; + --count; + } + + return ERROR_OK; } -static int aarch64_read_apb_ap_memory(struct target *target, +static int aarch64_read_cpu_memory_fast(struct target *target, + uint32_t count, uint8_t *buffer, uint32_t *dscr) +{ + struct armv8_common *armv8 = target_to_armv8(target); + struct arm_dpm *dpm = &armv8->dpm; + struct arm *arm = &armv8->arm; + int retval; + uint32_t value; + + /* Mark X1 as dirty */ + armv8_reg_current(arm, 1)->dirty = true; + + if (arm->core_state == ARM_STATE_AARCH64) { + /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */ + retval = dpm->instr_execute(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0, 0)); + } else { + /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */ + retval = dpm->instr_execute(dpm, ARMV4_5_MCR(14, 0, 0, 0, 5, 0)); + } + + /* Step 1.e - Change DCC to memory mode */ + *dscr |= DSCR_MA; + retval = mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, *dscr); + /* Step 1.f - read DBGDTRTX and discard the value */ + retval = mem_ap_read_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DTRTX, &value); + + count--; + /* Read the data - Each read of the DTRTX register causes the instruction to be reissued + * Abort flags are sticky, so can be read at end of transactions + * + * This data is read in aligned to 32 bit boundary. + */ + + if (count) { + /* Step 2.a - Loop n-1 times, each read of DBGDTRTX reads the data from [X0] and + * increments X0 by 4. */ + retval = mem_ap_read_buf_noincr(armv8->debug_ap, buffer, 4, count, + armv8->debug_base + CPUV8_DBG_DTRTX); + if (retval != ERROR_OK) + return retval; + } + + /* Step 3.a - set DTR access mode back to Normal mode */ + *dscr &= ~DSCR_MA; + retval = mem_ap_write_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DSCR, *dscr); + if (retval != ERROR_OK) + return retval; + + /* Step 3.b - read DBGDTRTX for the final value */ + retval = mem_ap_read_atomic_u32(armv8->debug_ap, + armv8->debug_base + CPUV8_DBG_DTRTX, &value); + if (retval != ERROR_OK) + return retval; + + target_buffer_set_u32(target, buffer + count * 4, value); + return retval; +} + +static int aarch64_read_cpu_memory(struct target *target, target_addr_t address, uint32_t size, uint32_t count, uint8_t *buffer) { @@ -1823,32 +1971,22 @@ static int aarch64_read_apb_ap_memory(struct target *target, struct armv8_common *armv8 = target_to_armv8(target); struct arm_dpm *dpm = &armv8->dpm; struct arm *arm = &armv8->arm; - int total_bytes = count * size; - int total_u32; - int start_byte = address & 0x3; - int end_byte = (address + total_bytes) & 0x3; - struct reg *reg; uint32_t dscr; - uint8_t *tmp_buff = NULL; - uint8_t *u8buf_ptr; - uint32_t value; + + LOG_DEBUG("Reading CPU memory address 0x%016" PRIx64 " size %" PRIu32 " count %" PRIu32, + address, size, count); if (target->state != TARGET_HALTED) { LOG_WARNING("target not halted"); return ERROR_TARGET_NOT_HALTED; } - total_u32 = DIV_ROUND_UP((address & 3) + total_bytes, 4); - /* Mark register X0, X1 as dirty, as it will be used + /* Mark register X0 as dirty, as it will be used * for transferring the data. * It will be restored automatically when exiting * debug mode */ - reg = armv8_reg_current(arm, 1); - reg->dirty = true; - - reg = armv8_reg_current(arm, 0); - reg->dirty = true; + armv8_reg_current(arm, 0)->dirty = true; /* Read DSCR */ retval = mem_ap_read_atomic_u32(armv8->debug_ap, @@ -1857,7 +1995,7 @@ static int aarch64_read_apb_ap_memory(struct target *target, /* This algorithm comes from DDI0487A.g, chapter J9.1 */ /* Set Normal access mode */ - dscr = (dscr & ~DSCR_MA); + dscr &= ~DSCR_MA; retval += mem_ap_write_atomic_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_DSCR, dscr); @@ -1866,83 +2004,34 @@ static int aarch64_read_apb_ap_memory(struct target *target, /* Step 1.a+b - Write the address for read access into DBGDTR_EL0 */ /* Step 1.c - Copy value from DTR to R0 using instruction mrs DBGDTR_EL0, x0 */ retval += dpm->instr_write_data_dcc_64(dpm, - ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), address & ~0x3ULL); - /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */ - retval += dpm->instr_execute(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0, 0)); - /* Step 1.e - Change DCC to memory mode */ - dscr = dscr | DSCR_MA; - retval += mem_ap_write_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, dscr); - /* Step 1.f - read DBGDTRTX and discard the value */ - retval += mem_ap_read_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DTRTX, &value); + ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, 0), address); } else { /* Write R0 with value 'address' using write procedure */ /* Step 1.a+b - Write the address for read access into DBGDTRRXint */ /* Step 1.c - Copy value from DTR to R0 using instruction mrc DBGDTRTXint, r0 */ retval += dpm->instr_write_data_dcc(dpm, - ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address & ~0x3ULL); - /* Step 1.d - Dummy operation to ensure EDSCR.Txfull == 1 */ - retval += dpm->instr_execute(dpm, ARMV4_5_MCR(14, 0, 0, 0, 5, 0)); - /* Step 1.e - Change DCC to memory mode */ - dscr = dscr | DSCR_MA; - retval += mem_ap_write_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, dscr); - /* Step 1.f - read DBGDTRTX and discard the value */ - retval += mem_ap_read_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DTRTX, &value); - + ARMV4_5_MRC(14, 0, 0, 0, 5, 0), address); } - if (retval != ERROR_OK) - goto error_unset_dtr_r; - - /* Optimize the read as much as we can, either way we read in a single pass */ - if ((start_byte) || (end_byte)) { - /* The algorithm only copies 32 bit words, so the buffer - * should be expanded to include the words at either end. - * The first and last words will be read into a temp buffer - * to avoid corruption - */ - tmp_buff = malloc(total_u32 * 4); - if (!tmp_buff) - goto error_unset_dtr_r; - - /* use the tmp buffer to read the entire data */ - u8buf_ptr = tmp_buff; - } else - /* address and read length are aligned so read directly into the passed buffer */ - u8buf_ptr = buffer; - /* Read the data - Each read of the DTRTX register causes the instruction to be reissued - * Abort flags are sticky, so can be read at end of transactions - * - * This data is read in aligned to 32 bit boundary. - */ - - /* Step 2.a - Loop n-1 times, each read of DBGDTRTX reads the data from [X0] and - * increments X0 by 4. */ - retval = mem_ap_read_buf_noincr(armv8->debug_ap, u8buf_ptr, 4, total_u32-1, - armv8->debug_base + CPUV8_DBG_DTRTX); - if (retval != ERROR_OK) - goto error_unset_dtr_r; + if (size == 4 && (address % 4) == 0) + retval = aarch64_read_cpu_memory_fast(target, count, buffer, &dscr); + else + retval = aarch64_read_cpu_memory_slow(target, size, count, buffer, &dscr); - /* Step 3.a - set DTR access mode back to Normal mode */ - dscr = (dscr & ~DSCR_MA); - retval = mem_ap_write_atomic_u32(armv8->debug_ap, + if (dscr & DSCR_MA) { + dscr &= ~DSCR_MA; + mem_ap_write_atomic_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_DSCR, dscr); - if (retval != ERROR_OK) - goto error_free_buff_r; + } - /* Step 3.b - read DBGDTRTX for the final value */ - retval = mem_ap_read_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DTRTX, &value); - memcpy(u8buf_ptr + (total_u32-1) * 4, &value, 4); + if (retval != ERROR_OK) + return retval; /* Check for sticky abort flags in the DSCR */ retval = mem_ap_read_atomic_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_DSCR, &dscr); if (retval != ERROR_OK) - goto error_free_buff_r; + return retval; dpm->dscr = dscr; @@ -1950,29 +2039,11 @@ static int aarch64_read_apb_ap_memory(struct target *target, /* Abort occurred - clear it and exit */ LOG_ERROR("abort occurred - dscr = 0x%08" PRIx32, dscr); armv8_dpm_handle_exception(dpm); - goto error_free_buff_r; - } - - /* check if we need to copy aligned data by applying any shift necessary */ - if (tmp_buff) { - memcpy(buffer, tmp_buff + start_byte, total_bytes); - free(tmp_buff); + return ERROR_FAIL; } /* Done */ return ERROR_OK; - -error_unset_dtr_r: - /* Unset DTR mode */ - mem_ap_read_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, &dscr); - dscr = (dscr & ~DSCR_MA); - mem_ap_write_atomic_u32(armv8->debug_ap, - armv8->debug_base + CPUV8_DBG_DSCR, dscr); -error_free_buff_r: - LOG_ERROR("error"); - free(tmp_buff); - return ERROR_FAIL; } static int aarch64_read_phys_memory(struct target *target, @@ -1986,7 +2057,7 @@ static int aarch64_read_phys_memory(struct target *target, retval = aarch64_mmu_modify(target, 0); if (retval != ERROR_OK) return retval; - retval = aarch64_read_apb_ap_memory(target, address, size, count, buffer); + retval = aarch64_read_cpu_memory(target, address, size, count, buffer); } return retval; } @@ -2008,7 +2079,7 @@ static int aarch64_read_memory(struct target *target, target_addr_t address, if (retval != ERROR_OK) return retval; } - return aarch64_read_apb_ap_memory(target, address, size, count, buffer); + return aarch64_read_cpu_memory(target, address, size, count, buffer); } static int aarch64_write_phys_memory(struct target *target, @@ -2022,7 +2093,7 @@ static int aarch64_write_phys_memory(struct target *target, retval = aarch64_mmu_modify(target, 0); if (retval != ERROR_OK) return retval; - return aarch64_write_apb_ap_memory(target, address, size, count, buffer); + return aarch64_write_cpu_memory(target, address, size, count, buffer); } return retval; @@ -2045,7 +2116,7 @@ static int aarch64_write_memory(struct target *target, target_addr_t address, if (retval != ERROR_OK) return retval; } - return aarch64_write_apb_ap_memory(target, address, size, count, buffer); + return aarch64_write_cpu_memory(target, address, size, count, buffer); } static int aarch64_handle_target_request(void *priv) diff --git a/src/target/armv8_opcodes.c b/src/target/armv8_opcodes.c index d3c0b3f5..6887b295 100644 --- a/src/target/armv8_opcodes.c +++ b/src/target/armv8_opcodes.c @@ -42,6 +42,12 @@ static const uint32_t a64_opcodes[ARMV8_OPC_NUM] = { [ARMV8_OPC_DCCIVAC] = ARMV8_SYS(SYSTEM_DCCIVAC, 0), [ARMV8_OPC_ICIVAU] = ARMV8_SYS(SYSTEM_ICIVAU, 0), [ARMV8_OPC_HLT] = ARMV8_HLT(11), + [ARMV8_OPC_LDRB_IP] = ARMV8_LDRB_IP(1, 0), + [ARMV8_OPC_LDRH_IP] = ARMV8_LDRH_IP(1, 0), + [ARMV8_OPC_LDRW_IP] = ARMV8_LDRW_IP(1, 0), + [ARMV8_OPC_STRB_IP] = ARMV8_STRB_IP(1, 0), + [ARMV8_OPC_STRH_IP] = ARMV8_STRH_IP(1, 0), + [ARMV8_OPC_STRW_IP] = ARMV8_STRW_IP(1, 0), }; static const uint32_t t32_opcodes[ARMV8_OPC_NUM] = { @@ -63,6 +69,12 @@ static const uint32_t t32_opcodes[ARMV8_OPC_NUM] = { [ARMV8_OPC_DCCIVAC] = ARMV4_5_MCR(15, 0, 0, 7, 14, 1), [ARMV8_OPC_ICIVAU] = ARMV4_5_MCR(15, 0, 0, 7, 5, 1), [ARMV8_OPC_HLT] = ARMV8_HLT_A1(11), + [ARMV8_OPC_LDRB_IP] = ARMV4_5_LDRB_IP(1, 0), + [ARMV8_OPC_LDRH_IP] = ARMV4_5_LDRH_IP(1, 0), + [ARMV8_OPC_LDRW_IP] = ARMV4_5_LDRW_IP(1, 0), + [ARMV8_OPC_STRB_IP] = ARMV4_5_STRB_IP(1, 0), + [ARMV8_OPC_STRH_IP] = ARMV4_5_STRH_IP(1, 0), + [ARMV8_OPC_STRW_IP] = ARMV4_5_STRW_IP(1, 0), }; void armv8_select_opcodes(struct armv8_common *armv8, bool state_is_aarch64) diff --git a/src/target/armv8_opcodes.h b/src/target/armv8_opcodes.h index 2d8ddd82..987198a8 100644 --- a/src/target/armv8_opcodes.h +++ b/src/target/armv8_opcodes.h @@ -159,6 +159,14 @@ #define ARMV8_MOVFSP_32(Rt) (0x11000000 | (0x1f << 5) | (Rt)) #define ARMV8_MOVTSP_32(Rt) (0x11000000 | (Rt << 5) | (0x1F)) +#define ARMV8_LDRB_IP(Rd, Rn) (0x38401400 | (Rn << 5) | Rd) +#define ARMV8_LDRH_IP(Rd, Rn) (0x78402400 | (Rn << 5) | Rd) +#define ARMV8_LDRW_IP(Rd, Rn) (0xb8404400 | (Rn << 5) | Rd) + +#define ARMV8_STRB_IP(Rd, Rn) (0x38001400 | (Rn << 5) | Rd) +#define ARMV8_STRH_IP(Rd, Rn) (0x78002400 | (Rn << 5) | Rd) +#define ARMV8_STRW_IP(Rd, Rn) (0xb8004400 | (Rn << 5) | Rd) + #define ARMV8_SYS(System, Rt) (0xD5080000 | ((System) << 5) | Rt) enum armv8_opcode { @@ -180,6 +188,12 @@ enum armv8_opcode { ARMV8_OPC_DCCIVAC, ARMV8_OPC_ICIVAU, ARMV8_OPC_HLT, + ARMV8_OPC_STRB_IP, + ARMV8_OPC_STRH_IP, + ARMV8_OPC_STRW_IP, + ARMV8_OPC_LDRB_IP, + ARMV8_OPC_LDRH_IP, + ARMV8_OPC_LDRW_IP, ARMV8_OPC_NUM, }; -- 2.39.5