// SPDX-License-Identifier: GPL-2.0-or-later /*************************************************************************** * Copyright (C) 2015 by David Ung * * * * Copyright (C) 2018 by Liviu Ionescu * * * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "armv8.h" #include "arm_disassembler.h" #include "register.h" #include #include #include #include #include #include #include "armv8_opcodes.h" #include "target.h" #include "target_type.h" #include "semihosting_common.h" static const char * const armv8_state_strings[] = { "AArch32", "Thumb", "Jazelle", "ThumbEE", "AArch64", }; static const struct { const char *name; unsigned psr; } armv8_mode_data[] = { { .name = "USR", .psr = ARM_MODE_USR, }, { .name = "FIQ", .psr = ARM_MODE_FIQ, }, { .name = "IRQ", .psr = ARM_MODE_IRQ, }, { .name = "SVC", .psr = ARM_MODE_SVC, }, { .name = "MON", .psr = ARM_MODE_MON, }, { .name = "ABT", .psr = ARM_MODE_ABT, }, { .name = "HYP", .psr = ARM_MODE_HYP, }, { .name = "UND", .psr = ARM_MODE_UND, }, { .name = "SYS", .psr = ARM_MODE_SYS, }, { .name = "EL0T", .psr = ARMV8_64_EL0T, }, { .name = "EL1T", .psr = ARMV8_64_EL1T, }, { .name = "EL1H", .psr = ARMV8_64_EL1H, }, { .name = "EL2T", .psr = ARMV8_64_EL2T, }, { .name = "EL2H", .psr = ARMV8_64_EL2H, }, { .name = "EL3T", .psr = ARMV8_64_EL3T, }, { .name = "EL3H", .psr = ARMV8_64_EL3H, }, }; /** Map PSR mode bits to the name of an ARM processor operating mode. */ const char *armv8_mode_name(unsigned psr_mode) { for (unsigned i = 0; i < ARRAY_SIZE(armv8_mode_data); i++) { if (armv8_mode_data[i].psr == psr_mode) return armv8_mode_data[i].name; } LOG_ERROR("unrecognized psr mode: %#02x", psr_mode); return "UNRECOGNIZED"; } static uint8_t armv8_pa_size(uint32_t ps) { uint8_t ret = 0; switch (ps) { case 0: ret = 32; break; case 1: ret = 36; break; case 2: ret = 40; break; case 3: ret = 42; break; case 4: ret = 44; break; case 5: ret = 48; break; default: LOG_INFO("Unknown physical address size"); break; } return ret; } static __attribute__((unused)) int armv8_read_ttbcr32(struct target *target) { struct armv8_common *armv8 = target_to_armv8(target); struct arm_dpm *dpm = armv8->arm.dpm; uint32_t ttbcr, ttbcr_n; int retval = dpm->prepare(dpm); if (retval != ERROR_OK) goto done; /* MRC p15,0,,c2,c0,2 ; Read CP15 Translation Table Base Control Register*/ retval = dpm->instr_read_data_r0(dpm, ARMV4_5_MRC(15, 0, 0, 2, 0, 2), &ttbcr); if (retval != ERROR_OK) goto done; LOG_DEBUG("ttbcr %" PRIx32, ttbcr); ttbcr_n = ttbcr & 0x7; armv8->armv8_mmu.ttbcr = ttbcr; /* * ARM Architecture Reference Manual (ARMv7-A and ARMv7-R edition), * document # ARM DDI 0406C */ armv8->armv8_mmu.ttbr_range[0] = 0xffffffff >> ttbcr_n; armv8->armv8_mmu.ttbr_range[1] = 0xffffffff; armv8->armv8_mmu.ttbr_mask[0] = 0xffffffff << (14 - ttbcr_n); armv8->armv8_mmu.ttbr_mask[1] = 0xffffffff << 14; LOG_DEBUG("ttbr1 %s, ttbr0_mask %" PRIx32 " ttbr1_mask %" PRIx32, (ttbcr_n != 0) ? "used" : "not used", armv8->armv8_mmu.ttbr_mask[0], armv8->armv8_mmu.ttbr_mask[1]); done: dpm->finish(dpm); return retval; } static int armv8_read_ttbcr(struct target *target) { struct armv8_common *armv8 = target_to_armv8(target); struct arm_dpm *dpm = armv8->arm.dpm; struct arm *arm = &armv8->arm; uint32_t ttbcr; uint64_t ttbcr_64; int retval = dpm->prepare(dpm); if (retval != ERROR_OK) goto done; /* clear ttrr1_used and ttbr0_mask */ memset(&armv8->armv8_mmu.ttbr1_used, 0, sizeof(armv8->armv8_mmu.ttbr1_used)); memset(&armv8->armv8_mmu.ttbr0_mask, 0, sizeof(armv8->armv8_mmu.ttbr0_mask)); switch (armv8_curel_from_core_mode(arm->core_mode)) { case SYSTEM_CUREL_EL3: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS(SYSTEM_TCR_EL3, 0), &ttbcr); retval += dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_TTBR0_EL3, 0), &armv8->ttbr_base); if (retval != ERROR_OK) goto done; armv8->va_size = 64 - (ttbcr & 0x3F); armv8->pa_size = armv8_pa_size((ttbcr >> 16) & 7); armv8->page_size = (ttbcr >> 14) & 3; break; case SYSTEM_CUREL_EL2: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS(SYSTEM_TCR_EL2, 0), &ttbcr); retval += dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_TTBR0_EL2, 0), &armv8->ttbr_base); if (retval != ERROR_OK) goto done; armv8->va_size = 64 - (ttbcr & 0x3F); armv8->pa_size = armv8_pa_size((ttbcr >> 16) & 7); armv8->page_size = (ttbcr >> 14) & 3; break; case SYSTEM_CUREL_EL0: armv8_dpm_modeswitch(dpm, ARMV8_64_EL1H); /* fall through */ case SYSTEM_CUREL_EL1: retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_TCR_EL1, 0), &ttbcr_64); armv8->va_size = 64 - (ttbcr_64 & 0x3F); armv8->pa_size = armv8_pa_size((ttbcr_64 >> 32) & 7); armv8->page_size = (ttbcr_64 >> 14) & 3; armv8->armv8_mmu.ttbr1_used = (((ttbcr_64 >> 16) & 0x3F) != 0) ? 1 : 0; armv8->armv8_mmu.ttbr0_mask = 0x0000FFFFFFFFFFFFULL; retval += dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_TTBR0_EL1 | (armv8->armv8_mmu.ttbr1_used), 0), &armv8->ttbr_base); if (retval != ERROR_OK) goto done; break; default: LOG_ERROR("unknown core state"); retval = ERROR_FAIL; break; } if (retval != ERROR_OK) goto done; if (armv8->armv8_mmu.ttbr1_used == 1) LOG_INFO("TTBR0 access above %" PRIx64, (uint64_t)(armv8->armv8_mmu.ttbr0_mask)); done: armv8_dpm_modeswitch(dpm, ARM_MODE_ANY); dpm->finish(dpm); return retval; } static int armv8_get_pauth_mask(struct armv8_common *armv8, uint64_t *mask) { struct arm *arm = &armv8->arm; int retval = ERROR_OK; if (armv8->va_size == 0) retval = armv8_read_ttbcr(arm->target); if (retval != ERROR_OK) return retval; *mask = ~(((uint64_t)1 << armv8->va_size) - 1); return retval; } static int armv8_read_reg(struct armv8_common *armv8, int regnum, uint64_t *regval) { struct arm_dpm *dpm = &armv8->dpm; int retval; uint32_t value; uint64_t value_64; switch (regnum) { case 0 ... 30: retval = dpm->instr_read_data_dcc_64(dpm, ARMV8_MSR_GP(SYSTEM_DBG_DBGDTR_EL0, regnum), &value_64); break; case ARMV8_SP: retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MOVFSP_64(0), &value_64); break; case ARMV8_PC: retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MRS_DLR(0), &value_64); break; case ARMV8_XPSR: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS_DSPSR(0), &value); value_64 = value; break; case ARMV8_FPSR: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS_FPSR(0), &value); value_64 = value; break; case ARMV8_FPCR: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS_FPCR(0), &value); value_64 = value; break; case ARMV8_ELR_EL1: retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_ELR_EL1, 0), &value_64); break; case ARMV8_ELR_EL2: retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_ELR_EL2, 0), &value_64); break; case ARMV8_ELR_EL3: retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_ELR_EL3, 0), &value_64); break; case ARMV8_ESR_EL1: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS(SYSTEM_ESR_EL1, 0), &value); value_64 = value; break; case ARMV8_ESR_EL2: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS(SYSTEM_ESR_EL2, 0), &value); value_64 = value; break; case ARMV8_ESR_EL3: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS(SYSTEM_ESR_EL3, 0), &value); value_64 = value; break; case ARMV8_SPSR_EL1: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS(SYSTEM_SPSR_EL1, 0), &value); value_64 = value; break; case ARMV8_SPSR_EL2: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS(SYSTEM_SPSR_EL2, 0), &value); value_64 = value; break; case ARMV8_SPSR_EL3: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS(SYSTEM_SPSR_EL3, 0), &value); value_64 = value; break; case ARMV8_PAUTH_CMASK: case ARMV8_PAUTH_DMASK: retval = armv8_get_pauth_mask(armv8, &value_64); break; default: retval = ERROR_FAIL; break; } if (retval == ERROR_OK && regval) *regval = value_64; else retval = ERROR_FAIL; return retval; } static int armv8_read_reg_simdfp_aarch64(struct armv8_common *armv8, int regnum, uint64_t *lvalue, uint64_t *hvalue) { int retval = ERROR_FAIL; struct arm_dpm *dpm = &armv8->dpm; switch (regnum) { case ARMV8_V0 ... ARMV8_V31: retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MOV_GPR_VFP(0, (regnum - ARMV8_V0), 1), hvalue); if (retval != ERROR_OK) return retval; retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MOV_GPR_VFP(0, (regnum - ARMV8_V0), 0), lvalue); break; default: retval = ERROR_FAIL; break; } return retval; } static int armv8_write_reg(struct armv8_common *armv8, int regnum, uint64_t value_64) { struct arm_dpm *dpm = &armv8->dpm; int retval; uint32_t value; switch (regnum) { case 0 ... 30: retval = dpm->instr_write_data_dcc_64(dpm, ARMV8_MRS(SYSTEM_DBG_DBGDTR_EL0, regnum), value_64); break; case ARMV8_SP: retval = dpm->instr_write_data_r0_64(dpm, ARMV8_MOVTSP_64(0), value_64); break; case ARMV8_PC: retval = dpm->instr_write_data_r0_64(dpm, ARMV8_MSR_DLR(0), value_64); break; case ARMV8_XPSR: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_DSPSR(0), value); break; case ARMV8_FPSR: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_FPSR(0), value); break; case ARMV8_FPCR: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_FPCR(0), value); break; /* registers clobbered by taking exception in debug state */ case ARMV8_ELR_EL1: retval = dpm->instr_write_data_r0_64(dpm, ARMV8_MSR_GP(SYSTEM_ELR_EL1, 0), value_64); break; case ARMV8_ELR_EL2: retval = dpm->instr_write_data_r0_64(dpm, ARMV8_MSR_GP(SYSTEM_ELR_EL2, 0), value_64); break; case ARMV8_ELR_EL3: retval = dpm->instr_write_data_r0_64(dpm, ARMV8_MSR_GP(SYSTEM_ELR_EL3, 0), value_64); break; case ARMV8_ESR_EL1: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP(SYSTEM_ESR_EL1, 0), value); break; case ARMV8_ESR_EL2: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP(SYSTEM_ESR_EL2, 0), value); break; case ARMV8_ESR_EL3: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP(SYSTEM_ESR_EL3, 0), value); break; case ARMV8_SPSR_EL1: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP(SYSTEM_SPSR_EL1, 0), value); break; case ARMV8_SPSR_EL2: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP(SYSTEM_SPSR_EL2, 0), value); break; case ARMV8_SPSR_EL3: value = value_64; retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP(SYSTEM_SPSR_EL3, 0), value); break; default: retval = ERROR_FAIL; break; } return retval; } static int armv8_write_reg_simdfp_aarch64(struct armv8_common *armv8, int regnum, uint64_t lvalue, uint64_t hvalue) { int retval = ERROR_FAIL; struct arm_dpm *dpm = &armv8->dpm; switch (regnum) { case ARMV8_V0 ... ARMV8_V31: retval = dpm->instr_write_data_r0_64(dpm, ARMV8_MOV_VFP_GPR((regnum - ARMV8_V0), 0, 1), hvalue); if (retval != ERROR_OK) return retval; retval = dpm->instr_write_data_r0_64(dpm, ARMV8_MOV_VFP_GPR((regnum - ARMV8_V0), 0, 0), lvalue); break; default: retval = ERROR_FAIL; break; } return retval; } static int armv8_read_reg32(struct armv8_common *armv8, int regnum, uint64_t *regval) { struct arm_dpm *dpm = &armv8->dpm; uint32_t value = 0; int retval; switch (regnum) { case ARMV8_R0 ... ARMV8_R14: /* return via DCC: "MCR p14, 0, Rnum, c0, c5, 0" */ retval = dpm->instr_read_data_dcc(dpm, ARMV4_5_MCR(14, 0, regnum, 0, 5, 0), &value); break; case ARMV8_SP: retval = dpm->instr_read_data_dcc(dpm, ARMV4_5_MCR(14, 0, 13, 0, 5, 0), &value); break; case ARMV8_PC: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRC_DLR(0), &value); break; case ARMV8_XPSR: retval = dpm->instr_read_data_r0(dpm, ARMV8_MRC_DSPSR(0), &value); break; case ARMV8_ELR_EL1: /* mapped to LR_svc */ retval = dpm->instr_read_data_dcc(dpm, ARMV4_5_MCR(14, 0, 14, 0, 5, 0), &value); break; case ARMV8_ELR_EL2: /* mapped to ELR_hyp */ retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS_T1(0, 14, 0, 1), &value); break; case ARMV8_ELR_EL3: /* mapped to LR_mon */ retval = dpm->instr_read_data_dcc(dpm, ARMV4_5_MCR(14, 0, 14, 0, 5, 0), &value); break; case ARMV8_ESR_EL1: /* mapped to DFSR */ retval = dpm->instr_read_data_r0(dpm, ARMV4_5_MRC(15, 0, 0, 5, 0, 0), &value); break; case ARMV8_ESR_EL2: /* mapped to HSR */ retval = dpm->instr_read_data_r0(dpm, ARMV4_5_MRC(15, 4, 0, 5, 2, 0), &value); break; case ARMV8_ESR_EL3: /* FIXME: no equivalent in aarch32? */ retval = ERROR_FAIL; break; case ARMV8_SPSR_EL1: /* mapped to SPSR_svc */ retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS_XPSR_T1(1, 0), &value); break; case ARMV8_SPSR_EL2: /* mapped to SPSR_hyp */ retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS_XPSR_T1(1, 0), &value); break; case ARMV8_SPSR_EL3: /* mapped to SPSR_mon */ retval = dpm->instr_read_data_r0(dpm, ARMV8_MRS_XPSR_T1(1, 0), &value); break; case ARMV8_FPSR: /* "VMRS r0, FPSCR"; then return via DCC */ retval = dpm->instr_read_data_r0(dpm, ARMV4_5_VMRS(0), &value); break; default: retval = ERROR_FAIL; break; } if (retval == ERROR_OK && regval) *regval = value; return retval; } static int armv8_read_reg_simdfp_aarch32(struct armv8_common *armv8, int regnum, uint64_t *lvalue, uint64_t *hvalue) { int retval = ERROR_FAIL; struct arm_dpm *dpm = &armv8->dpm; struct reg *reg_r1 = dpm->arm->core_cache->reg_list + ARMV8_R1; uint32_t value_r0 = 0, value_r1 = 0; unsigned num = (regnum - ARMV8_V0) << 1; switch (regnum) { case ARMV8_V0 ... ARMV8_V15: /* we are going to write R1, mark it dirty */ reg_r1->dirty = true; /* move from double word register to r0:r1: "vmov r0, r1, vm" * then read r0 via dcc */ retval = dpm->instr_read_data_r0(dpm, ARMV4_5_VMOV(1, 1, 0, (num >> 4), (num & 0xf)), &value_r0); if (retval != ERROR_OK) return retval; /* read r1 via dcc */ retval = dpm->instr_read_data_dcc(dpm, ARMV4_5_MCR(14, 0, 1, 0, 5, 0), &value_r1); if (retval != ERROR_OK) return retval; *lvalue = value_r1; *lvalue = ((*lvalue) << 32) | value_r0; num++; /* repeat above steps for high 64 bits of V register */ retval = dpm->instr_read_data_r0(dpm, ARMV4_5_VMOV(1, 1, 0, (num >> 4), (num & 0xf)), &value_r0); if (retval != ERROR_OK) return retval; retval = dpm->instr_read_data_dcc(dpm, ARMV4_5_MCR(14, 0, 1, 0, 5, 0), &value_r1); if (retval != ERROR_OK) return retval; *hvalue = value_r1; *hvalue = ((*hvalue) << 32) | value_r0; break; default: retval = ERROR_FAIL; break; } return retval; } static int armv8_write_reg32(struct armv8_common *armv8, int regnum, uint64_t value) { struct arm_dpm *dpm = &armv8->dpm; int retval; switch (regnum) { case ARMV8_R0 ... ARMV8_R14: /* load register from DCC: "MRC p14, 0, Rnum, c0, c5, 0" */ retval = dpm->instr_write_data_dcc(dpm, ARMV4_5_MRC(14, 0, regnum, 0, 5, 0), value); break; case ARMV8_SP: retval = dpm->instr_write_data_dcc(dpm, ARMV4_5_MRC(14, 0, 13, 0, 5, 0), value); break; case ARMV8_PC:/* PC * read r0 from DCC; then "MOV pc, r0" */ retval = dpm->instr_write_data_r0(dpm, ARMV8_MCR_DLR(0), value); break; case ARMV8_XPSR: /* CPSR */ /* read r0 from DCC, then "MCR r0, DSPSR" */ retval = dpm->instr_write_data_r0(dpm, ARMV8_MCR_DSPSR(0), value); break; case ARMV8_ELR_EL1: /* mapped to LR_svc */ retval = dpm->instr_write_data_dcc(dpm, ARMV4_5_MRC(14, 0, 14, 0, 5, 0), value); break; case ARMV8_ELR_EL2: /* mapped to ELR_hyp */ retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP_T1(0, 14, 0, 1), value); break; case ARMV8_ELR_EL3: /* mapped to LR_mon */ retval = dpm->instr_write_data_dcc(dpm, ARMV4_5_MRC(14, 0, 14, 0, 5, 0), value); break; case ARMV8_ESR_EL1: /* mapped to DFSR */ retval = dpm->instr_write_data_r0(dpm, ARMV4_5_MCR(15, 0, 0, 5, 0, 0), value); break; case ARMV8_ESR_EL2: /* mapped to HSR */ retval = dpm->instr_write_data_r0(dpm, ARMV4_5_MCR(15, 4, 0, 5, 2, 0), value); break; case ARMV8_ESR_EL3: /* FIXME: no equivalent in aarch32? */ retval = ERROR_FAIL; break; case ARMV8_SPSR_EL1: /* mapped to SPSR_svc */ retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP_XPSR_T1(1, 0, 15), value); break; case ARMV8_SPSR_EL2: /* mapped to SPSR_hyp */ retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP_XPSR_T1(1, 0, 15), value); break; case ARMV8_SPSR_EL3: /* mapped to SPSR_mon */ retval = dpm->instr_write_data_r0(dpm, ARMV8_MSR_GP_XPSR_T1(1, 0, 15), value); break; case ARMV8_FPSR: /* move to r0 from DCC, then "VMSR FPSCR, r0" */ retval = dpm->instr_write_data_r0(dpm, ARMV4_5_VMSR(0), value); break; default: retval = ERROR_FAIL; break; } return retval; } static int armv8_write_reg_simdfp_aarch32(struct armv8_common *armv8, int regnum, uint64_t lvalue, uint64_t hvalue) { int retval = ERROR_FAIL; struct arm_dpm *dpm = &armv8->dpm; struct reg *reg_r1 = dpm->arm->core_cache->reg_list + ARMV8_R1; uint32_t value_r0 = 0, value_r1 = 0; unsigned num = (regnum - ARMV8_V0) << 1; switch (regnum) { case ARMV8_V0 ... ARMV8_V15: /* we are going to write R1, mark it dirty */ reg_r1->dirty = true; value_r1 = lvalue >> 32; value_r0 = lvalue & 0xFFFFFFFF; /* write value_r1 to r1 via dcc */ retval = dpm->instr_write_data_dcc(dpm, ARMV4_5_MRC(14, 0, 1, 0, 5, 0), value_r1); if (retval != ERROR_OK) return retval; /* write value_r0 to r0 via dcc then, * move to double word register from r0:r1: "vmov vm, r0, r1" */ retval = dpm->instr_write_data_r0(dpm, ARMV4_5_VMOV(0, 1, 0, (num >> 4), (num & 0xf)), value_r0); if (retval != ERROR_OK) return retval; num++; /* repeat above steps for high 64 bits of V register */ value_r1 = hvalue >> 32; value_r0 = hvalue & 0xFFFFFFFF; retval = dpm->instr_write_data_dcc(dpm, ARMV4_5_MRC(14, 0, 1, 0, 5, 0), value_r1); if (retval != ERROR_OK) return retval; retval = dpm->instr_write_data_r0(dpm, ARMV4_5_VMOV(0, 1, 0, (num >> 4), (num & 0xf)), value_r0); break; default: retval = ERROR_FAIL; break; } return retval; } void armv8_select_reg_access(struct armv8_common *armv8, bool is_aarch64) { if (is_aarch64) { armv8->read_reg_u64 = armv8_read_reg; armv8->write_reg_u64 = armv8_write_reg; armv8->read_reg_u128 = armv8_read_reg_simdfp_aarch64; armv8->write_reg_u128 = armv8_write_reg_simdfp_aarch64; } else { armv8->read_reg_u64 = armv8_read_reg32; armv8->write_reg_u64 = armv8_write_reg32; armv8->read_reg_u128 = armv8_read_reg_simdfp_aarch32; armv8->write_reg_u128 = armv8_write_reg_simdfp_aarch32; } } /* retrieve core id cluster id */ int armv8_read_mpidr(struct armv8_common *armv8) { int retval = ERROR_FAIL; struct arm *arm = &armv8->arm; struct arm_dpm *dpm = armv8->arm.dpm; uint32_t mpidr; retval = dpm->prepare(dpm); if (retval != ERROR_OK) goto done; /* check if we're in an unprivileged mode */ if (armv8_curel_from_core_mode(arm->core_mode) < SYSTEM_CUREL_EL1) { retval = armv8_dpm_modeswitch(dpm, ARMV8_64_EL1H); if (retval != ERROR_OK) return retval; } retval = dpm->instr_read_data_r0(dpm, armv8_opcode(armv8, READ_REG_MPIDR), &mpidr); if (retval != ERROR_OK) goto done; if (mpidr & 1U<<31) { armv8->multi_processor_system = (mpidr >> 30) & 1; armv8->cluster_id = (mpidr >> 8) & 0xf; armv8->cpu_id = mpidr & 0x3; LOG_INFO("%s cluster %x core %x %s", target_name(armv8->arm.target), armv8->cluster_id, armv8->cpu_id, armv8->multi_processor_system == 0 ? "multi core" : "single core"); } else LOG_ERROR("mpidr not in multiprocessor format"); done: armv8_dpm_modeswitch(dpm, ARM_MODE_ANY); dpm->finish(dpm); return retval; } /** * Configures host-side ARM records to reflect the specified CPSR. * Later, code can use arm_reg_current() to map register numbers * according to how they are exposed by this mode. */ void armv8_set_cpsr(struct arm *arm, uint32_t cpsr) { uint32_t mode = cpsr & 0x1F; /* NOTE: this may be called very early, before the register * cache is set up. We can't defend against many errors, in * particular against CPSRs that aren't valid *here* ... */ if (arm->cpsr) { buf_set_u32(arm->cpsr->value, 0, 32, cpsr); arm->cpsr->valid = true; arm->cpsr->dirty = false; } /* Older ARMs won't have the J bit */ enum arm_state state = 0xFF; if ((cpsr & 0x10) != 0) { /* Aarch32 state */ if (cpsr & (1 << 5)) { /* T */ if (cpsr & (1 << 24)) { /* J */ LOG_WARNING("ThumbEE -- incomplete support"); state = ARM_STATE_THUMB_EE; } else state = ARM_STATE_THUMB; } else { if (cpsr & (1 << 24)) { /* J */ LOG_ERROR("Jazelle state handling is BROKEN!"); state = ARM_STATE_JAZELLE; } else state = ARM_STATE_ARM; } } else { /* Aarch64 state */ state = ARM_STATE_AARCH64; } arm->core_state = state; arm->core_mode = mode; LOG_DEBUG("set CPSR %#8.8x: %s mode, %s state", (unsigned) cpsr, armv8_mode_name(arm->core_mode), armv8_state_strings[arm->core_state]); } static void armv8_show_fault_registers32(struct armv8_common *armv8) { uint32_t dfsr, ifsr, dfar, ifar; struct arm_dpm *dpm = armv8->arm.dpm; int retval; retval = dpm->prepare(dpm); if (retval != ERROR_OK) return; /* ARMV4_5_MRC(cpnum, op1, r0, crn, crm, op2) */ /* c5/c0 - {data, instruction} fault status registers */ retval = dpm->instr_read_data_r0(dpm, ARMV4_5_MRC(15, 0, 0, 5, 0, 0), &dfsr); if (retval != ERROR_OK) goto done; retval = dpm->instr_read_data_r0(dpm, ARMV4_5_MRC(15, 0, 0, 5, 0, 1), &ifsr); if (retval != ERROR_OK) goto done; /* c6/c0 - {data, instruction} fault address registers */ retval = dpm->instr_read_data_r0(dpm, ARMV4_5_MRC(15, 0, 0, 6, 0, 0), &dfar); if (retval != ERROR_OK) goto done; retval = dpm->instr_read_data_r0(dpm, ARMV4_5_MRC(15, 0, 0, 6, 0, 2), &ifar); if (retval != ERROR_OK) goto done; LOG_USER("Data fault registers DFSR: %8.8" PRIx32 ", DFAR: %8.8" PRIx32, dfsr, dfar); LOG_USER("Instruction fault registers IFSR: %8.8" PRIx32 ", IFAR: %8.8" PRIx32, ifsr, ifar); done: /* (void) */ dpm->finish(dpm); } static __attribute__((unused)) void armv8_show_fault_registers(struct target *target) { struct armv8_common *armv8 = target_to_armv8(target); if (armv8->arm.core_state != ARM_STATE_AARCH64) armv8_show_fault_registers32(armv8); } /* method adapted to cortex A : reused arm v4 v5 method*/ int armv8_mmu_translate_va(struct target *target, target_addr_t va, target_addr_t *val) { return ERROR_OK; } static void armv8_decode_cacheability(int attr) { if (attr == 0) { LOG_USER_N("UNPREDICTABLE"); return; } if (attr == 4) { LOG_USER_N("Non-cacheable"); return; } switch (attr & 0xC) { case 0: LOG_USER_N("Write-Through Transient"); break; case 0x4: LOG_USER_N("Write-Back Transient"); break; case 0x8: LOG_USER_N("Write-Through Non-transient"); break; case 0xC: LOG_USER_N("Write-Back Non-transient"); break; } if (attr & 2) LOG_USER_N(" Read-Allocate"); else LOG_USER_N(" No-Read Allocate"); if (attr & 1) LOG_USER_N(" Write-Allocate"); else LOG_USER_N(" No-Write Allocate"); } static void armv8_decode_memory_attr(int attr) { if (attr == 0x40) { LOG_USER("Normal Memory, Inner Non-cacheable, " "Outer Non-cacheable, XS=0"); } else if (attr == 0xA0) { LOG_USER("Normal Memory, Inner Write-through Cacheable, " "Outer Write-through Cacheable, Read-Allocate, " "No-Write Allocate, Non-transient, XS=0"); } else if (attr == 0xF0) { LOG_USER("Tagged Normal Memory, Inner Write-Back, " "Outer Write-Back, Read-Allocate, Write-Allocate, " "Non-transient"); } else if ((attr & 0xF0) == 0) { switch (attr & 0xC) { case 0: LOG_USER_N("Device-nGnRnE Memory"); break; case 0x4: LOG_USER_N("Device-nGnRE Memory"); break; case 0x8: LOG_USER_N("Device-nGRE Memory"); break; case 0xC: LOG_USER_N("Device-GRE Memory"); break; } if (attr & 1) LOG_USER(", XS=0"); else LOG_USER_N("\n"); } else { LOG_USER_N("Normal Memory, Inner "); armv8_decode_cacheability(attr & 0xF); LOG_USER_N(", Outer "); armv8_decode_cacheability(attr >> 4); LOG_USER_N("\n"); } } /* V8 method VA TO PA */ int armv8_mmu_translate_va_pa(struct target *target, target_addr_t va, target_addr_t *val, int meminfo) { struct armv8_common *armv8 = target_to_armv8(target); struct arm *arm = target_to_arm(target); struct arm_dpm *dpm = &armv8->dpm; enum arm_mode target_mode = ARM_MODE_ANY; uint32_t retval; uint32_t instr = 0; uint64_t par; static const char * const shared_name[] = { "Non-", "UNDEFINED ", "Outer ", "Inner " }; static const char * const secure_name[] = { "Secure", "Not Secure" }; if (target->state != TARGET_HALTED) { LOG_TARGET_ERROR(target, "not halted"); return ERROR_TARGET_NOT_HALTED; } retval = dpm->prepare(dpm); if (retval != ERROR_OK) return retval; switch (armv8_curel_from_core_mode(arm->core_mode)) { case SYSTEM_CUREL_EL0: instr = ARMV8_SYS(SYSTEM_ATS12E0R, 0); /* can only execute instruction at EL2 */ target_mode = ARMV8_64_EL2H; break; case SYSTEM_CUREL_EL1: instr = ARMV8_SYS(SYSTEM_ATS12E1R, 0); /* can only execute instruction at EL2 */ target_mode = ARMV8_64_EL2H; break; case SYSTEM_CUREL_EL2: instr = ARMV8_SYS(SYSTEM_ATS1E2R, 0); break; case SYSTEM_CUREL_EL3: instr = ARMV8_SYS(SYSTEM_ATS1E3R, 0); break; default: break; }; if (target_mode != ARM_MODE_ANY) armv8_dpm_modeswitch(dpm, target_mode); /* write VA to R0 and execute translation instruction */ retval = dpm->instr_write_data_r0_64(dpm, instr, (uint64_t)va); /* read result from PAR_EL1 */ if (retval == ERROR_OK) retval = dpm->instr_read_data_r0_64(dpm, ARMV8_MRS(SYSTEM_PAR_EL1, 0), &par); /* switch back to saved PE mode */ if (target_mode != ARM_MODE_ANY) armv8_dpm_modeswitch(dpm, ARM_MODE_ANY); dpm->finish(dpm); if (retval != ERROR_OK) return retval; if (par & 1) { LOG_ERROR("Address translation failed at stage %i, FST=%x, PTW=%i", ((int)(par >> 9) & 1)+1, (int)(par >> 1) & 0x3f, (int)(par >> 8) & 1); *val = 0; retval = ERROR_FAIL; } else { *val = (par & 0xFFFFFFFFF000UL) | (va & 0xFFF); if (meminfo) { int SH = (par >> 7) & 3; int NS = (par >> 9) & 1; int ATTR = (par >> 56) & 0xFF; LOG_USER("%sshareable, %s", shared_name[SH], secure_name[NS]); armv8_decode_memory_attr(ATTR); } } return retval; } COMMAND_HANDLER(armv8_handle_exception_catch_command) { struct target *target = get_current_target(CMD_CTX); struct armv8_common *armv8 = target_to_armv8(target); uint32_t edeccr = 0; unsigned int argp = 0; int retval; static const struct nvp nvp_ecatch_modes[] = { { .name = "off", .value = 0 }, { .name = "nsec_el1", .value = (1 << 5) }, { .name = "nsec_el2", .value = (2 << 5) }, { .name = "nsec_el12", .value = (3 << 5) }, { .name = "sec_el1", .value = (1 << 1) }, { .name = "sec_el3", .value = (4 << 1) }, { .name = "sec_el13", .value = (5 << 1) }, { .name = NULL, .value = -1 }, }; const struct nvp *n; if (CMD_ARGC == 0) { const char *sec = NULL, *nsec = NULL; retval = mem_ap_read_atomic_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_ECCR, &edeccr); if (retval != ERROR_OK) return retval; n = nvp_value2name(nvp_ecatch_modes, edeccr & 0x0f); if (n->name) sec = n->name; n = nvp_value2name(nvp_ecatch_modes, edeccr & 0xf0); if (n->name) nsec = n->name; if (!sec || !nsec) { LOG_WARNING("Exception Catch: unknown exception catch configuration: EDECCR = %02" PRIx32, edeccr & 0xff); return ERROR_FAIL; } command_print(CMD, "Exception Catch: Secure: %s, Non-Secure: %s", sec, nsec); return ERROR_OK; } while (argp < CMD_ARGC) { n = nvp_name2value(nvp_ecatch_modes, CMD_ARGV[argp]); if (!n->name) { LOG_ERROR("Unknown option: %s", CMD_ARGV[argp]); return ERROR_FAIL; } LOG_DEBUG("found: %s", n->name); edeccr |= n->value; argp++; } retval = mem_ap_write_atomic_u32(armv8->debug_ap, armv8->debug_base + CPUV8_DBG_ECCR, edeccr); if (retval != ERROR_OK) return retval; return ERROR_OK; } COMMAND_HANDLER(armv8_pauth_command) { struct target *target = get_current_target(CMD_CTX); struct armv8_common *armv8 = target_to_armv8(target); return CALL_COMMAND_HANDLER(handle_command_parse_bool, &armv8->enable_pauth, "pauth feature"); } int armv8_handle_cache_info_command(struct command_invocation *cmd, struct armv8_cache_common *armv8_cache) { if (armv8_cache->info == -1) { command_print(cmd, "cache not yet identified"); return ERROR_OK; } if (armv8_cache->display_cache_info) armv8_cache->display_cache_info(cmd, armv8_cache); return ERROR_OK; } static int armv8_setup_semihosting(struct target *target, int enable) { return ERROR_OK; } int armv8_init_arch_info(struct target *target, struct armv8_common *armv8) { struct arm *arm = &armv8->arm; arm->arch_info = armv8; target->arch_info = &armv8->arm; arm->setup_semihosting = armv8_setup_semihosting; /* target is useful in all function arm v4 5 compatible */ armv8->arm.target = target; armv8->arm.common_magic = ARM_COMMON_MAGIC; armv8->common_magic = ARMV8_COMMON_MAGIC; armv8->armv8_mmu.armv8_cache.l2_cache = NULL; armv8->armv8_mmu.armv8_cache.info = -1; armv8->armv8_mmu.armv8_cache.flush_all_data_cache = NULL; armv8->armv8_mmu.armv8_cache.display_cache_info = NULL; return ERROR_OK; } static int armv8_aarch64_state(struct target *target) { struct arm *arm = target_to_arm(target); if (arm->common_magic != ARM_COMMON_MAGIC) { LOG_ERROR("BUG: called for a non-ARM target"); return ERROR_FAIL; } LOG_USER("%s halted in %s state due to %s, current mode: %s\n" "cpsr: 0x%8.8" PRIx32 " pc: 0x%" PRIx64 "%s", target_name(target), armv8_state_strings[arm->core_state], debug_reason_name(target), armv8_mode_name(arm->core_mode), buf_get_u32(arm->cpsr->value, 0, 32), buf_get_u64(arm->pc->value, 0, 64), (target->semihosting && target->semihosting->is_active) ? ", semihosting" : ""); return ERROR_OK; } int armv8_arch_state(struct target *target) { static const char * const state[] = { "disabled", "enabled" }; struct armv8_common *armv8 = target_to_armv8(target); struct arm *arm = &armv8->arm; if (armv8->common_magic != ARMV8_COMMON_MAGIC) { LOG_ERROR("BUG: called for a non-Armv8 target"); return ERROR_COMMAND_SYNTAX_ERROR; } if (arm->core_state == ARM_STATE_AARCH64) armv8_aarch64_state(target); else arm_arch_state(target); LOG_USER("MMU: %s, D-Cache: %s, I-Cache: %s", state[armv8->armv8_mmu.mmu_enabled], state[armv8->armv8_mmu.armv8_cache.d_u_cache_enabled], state[armv8->armv8_mmu.armv8_cache.i_cache_enabled]); if (arm->core_mode == ARM_MODE_ABT) armv8_show_fault_registers(target); if (target->debug_reason == DBG_REASON_WATCHPOINT) LOG_USER("Watchpoint triggered at " TARGET_ADDR_FMT, armv8->dpm.wp_addr); return ERROR_OK; } static struct reg_data_type aarch64_vector_base_types[] = { {REG_TYPE_IEEE_DOUBLE, "ieee_double", 0, {NULL} }, {REG_TYPE_UINT64, "uint64", 0, {NULL} }, {REG_TYPE_INT64, "int64", 0, {NULL} }, {REG_TYPE_IEEE_SINGLE, "ieee_single", 0, {NULL} }, {REG_TYPE_UINT32, "uint32", 0, {NULL} }, {REG_TYPE_INT32, "int32", 0, {NULL} }, {REG_TYPE_UINT16, "uint16", 0, {NULL} }, {REG_TYPE_INT16, "int16", 0, {NULL} }, {REG_TYPE_UINT8, "uint8", 0, {NULL} }, {REG_TYPE_INT8, "int8", 0, {NULL} }, {REG_TYPE_UINT128, "uint128", 0, {NULL} }, {REG_TYPE_INT128, "int128", 0, {NULL} } }; static struct reg_data_type_vector aarch64_vector_types[] = { {aarch64_vector_base_types + 0, 2}, {aarch64_vector_base_types + 1, 2}, {aarch64_vector_base_types + 2, 2}, {aarch64_vector_base_types + 3, 4}, {aarch64_vector_base_types + 4, 4}, {aarch64_vector_base_types + 5, 4}, {aarch64_vector_base_types + 6, 8}, {aarch64_vector_base_types + 7, 8}, {aarch64_vector_base_types + 8, 16}, {aarch64_vector_base_types + 9, 16}, {aarch64_vector_base_types + 10, 01}, {aarch64_vector_base_types + 11, 01}, }; static struct reg_data_type aarch64_fpu_vector[] = { {REG_TYPE_ARCH_DEFINED, "v2d", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 0} }, {REG_TYPE_ARCH_DEFINED, "v2u", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 1} }, {REG_TYPE_ARCH_DEFINED, "v2i", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 2} }, {REG_TYPE_ARCH_DEFINED, "v4f", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 3} }, {REG_TYPE_ARCH_DEFINED, "v4u", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 4} }, {REG_TYPE_ARCH_DEFINED, "v4i", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 5} }, {REG_TYPE_ARCH_DEFINED, "v8u", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 6} }, {REG_TYPE_ARCH_DEFINED, "v8i", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 7} }, {REG_TYPE_ARCH_DEFINED, "v16u", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 8} }, {REG_TYPE_ARCH_DEFINED, "v16i", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 9} }, {REG_TYPE_ARCH_DEFINED, "v1u", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 10} }, {REG_TYPE_ARCH_DEFINED, "v1i", REG_TYPE_CLASS_VECTOR, {aarch64_vector_types + 11} }, }; static struct reg_data_type_union_field aarch64_union_fields_vnd[] = { {"f", aarch64_fpu_vector + 0, aarch64_union_fields_vnd + 1}, {"u", aarch64_fpu_vector + 1, aarch64_union_fields_vnd + 2}, {"s", aarch64_fpu_vector + 2, NULL}, }; static struct reg_data_type_union_field aarch64_union_fields_vns[] = { {"f", aarch64_fpu_vector + 3, aarch64_union_fields_vns + 1}, {"u", aarch64_fpu_vector + 4, aarch64_union_fields_vns + 2}, {"s", aarch64_fpu_vector + 5, NULL}, }; static struct reg_data_type_union_field aarch64_union_fields_vnh[] = { {"u", aarch64_fpu_vector + 6, aarch64_union_fields_vnh + 1}, {"s", aarch64_fpu_vector + 7, NULL}, }; static struct reg_data_type_union_field aarch64_union_fields_vnb[] = { {"u", aarch64_fpu_vector + 8, aarch64_union_fields_vnb + 1}, {"s", aarch64_fpu_vector + 9, NULL}, }; static struct reg_data_type_union_field aarch64_union_fields_vnq[] = { {"u", aarch64_fpu_vector + 10, aarch64_union_fields_vnq + 1}, {"s", aarch64_fpu_vector + 11, NULL}, }; static struct reg_data_type_union aarch64_union_types[] = { {aarch64_union_fields_vnd}, {aarch64_union_fields_vns}, {aarch64_union_fields_vnh}, {aarch64_union_fields_vnb}, {aarch64_union_fields_vnq}, }; static struct reg_data_type aarch64_fpu_union[] = { {REG_TYPE_ARCH_DEFINED, "vnd", REG_TYPE_CLASS_UNION, {.reg_type_union = aarch64_union_types + 0} }, {REG_TYPE_ARCH_DEFINED, "vns", REG_TYPE_CLASS_UNION, {.reg_type_union = aarch64_union_types + 1} }, {REG_TYPE_ARCH_DEFINED, "vnh", REG_TYPE_CLASS_UNION, {.reg_type_union = aarch64_union_types + 2} }, {REG_TYPE_ARCH_DEFINED, "vnb", REG_TYPE_CLASS_UNION, {.reg_type_union = aarch64_union_types + 3} }, {REG_TYPE_ARCH_DEFINED, "vnq", REG_TYPE_CLASS_UNION, {.reg_type_union = aarch64_union_types + 4} }, }; static struct reg_data_type_union_field aarch64v_union_fields[] = { {"d", aarch64_fpu_union + 0, aarch64v_union_fields + 1}, {"s", aarch64_fpu_union + 1, aarch64v_union_fields + 2}, {"h", aarch64_fpu_union + 2, aarch64v_union_fields + 3}, {"b", aarch64_fpu_union + 3, aarch64v_union_fields + 4}, {"q", aarch64_fpu_union + 4, NULL}, }; static struct reg_data_type_union aarch64v_union[] = { {aarch64v_union_fields} }; static struct reg_data_type aarch64v[] = { {REG_TYPE_ARCH_DEFINED, "aarch64v", REG_TYPE_CLASS_UNION, {.reg_type_union = aarch64v_union} }, }; static struct reg_data_type_bitfield aarch64_cpsr_bits[] = { { 0, 0, REG_TYPE_UINT8 }, { 2, 3, REG_TYPE_UINT8 }, { 4, 4, REG_TYPE_UINT8 }, { 6, 6, REG_TYPE_BOOL }, { 7, 7, REG_TYPE_BOOL }, { 8, 8, REG_TYPE_BOOL }, { 9, 9, REG_TYPE_BOOL }, { 20, 20, REG_TYPE_BOOL }, { 21, 21, REG_TYPE_BOOL }, { 28, 28, REG_TYPE_BOOL }, { 29, 29, REG_TYPE_BOOL }, { 30, 30, REG_TYPE_BOOL }, { 31, 31, REG_TYPE_BOOL }, }; static struct reg_data_type_flags_field aarch64_cpsr_fields[] = { { "SP", aarch64_cpsr_bits + 0, aarch64_cpsr_fields + 1 }, { "EL", aarch64_cpsr_bits + 1, aarch64_cpsr_fields + 2 }, { "nRW", aarch64_cpsr_bits + 2, aarch64_cpsr_fields + 3 }, { "F", aarch64_cpsr_bits + 3, aarch64_cpsr_fields + 4 }, { "I", aarch64_cpsr_bits + 4, aarch64_cpsr_fields + 5 }, { "A", aarch64_cpsr_bits + 5, aarch64_cpsr_fields + 6 }, { "D", aarch64_cpsr_bits + 6, aarch64_cpsr_fields + 7 }, { "IL", aarch64_cpsr_bits + 7, aarch64_cpsr_fields + 8 }, { "SS", aarch64_cpsr_bits + 8, aarch64_cpsr_fields + 9 }, { "V", aarch64_cpsr_bits + 9, aarch64_cpsr_fields + 10 }, { "C", aarch64_cpsr_bits + 10, aarch64_cpsr_fields + 11 }, { "Z", aarch64_cpsr_bits + 11, aarch64_cpsr_fields + 12 }, { "N", aarch64_cpsr_bits + 12, NULL } }; static struct reg_data_type_flags aarch64_cpsr_flags[] = { { 4, aarch64_cpsr_fields } }; static struct reg_data_type aarch64_flags_cpsr[] = { {REG_TYPE_ARCH_DEFINED, "cpsr_flags", REG_TYPE_CLASS_FLAGS, {.reg_type_flags = aarch64_cpsr_flags} }, }; static const struct { unsigned id; const char *name; unsigned bits; enum arm_mode mode; enum reg_type type; const char *group; const char *feature; struct reg_data_type *data_type; } armv8_regs[] = { { ARMV8_R0, "x0", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R1, "x1", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R2, "x2", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R3, "x3", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R4, "x4", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R5, "x5", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R6, "x6", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R7, "x7", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R8, "x8", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R9, "x9", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R10, "x10", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R11, "x11", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R12, "x12", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R13, "x13", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R14, "x14", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R15, "x15", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R16, "x16", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R17, "x17", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R18, "x18", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R19, "x19", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R20, "x20", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R21, "x21", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R22, "x22", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R23, "x23", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R24, "x24", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R25, "x25", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R26, "x26", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R27, "x27", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R28, "x28", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R29, "x29", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_R30, "x30", 64, ARM_MODE_ANY, REG_TYPE_UINT64, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_SP, "sp", 64, ARM_MODE_ANY, REG_TYPE_DATA_PTR, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_PC, "pc", 64, ARM_MODE_ANY, REG_TYPE_CODE_PTR, "general", "org.gnu.gdb.aarch64.core", NULL}, { ARMV8_XPSR, "cpsr", 32, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "general", "org.gnu.gdb.aarch64.core", aarch64_flags_cpsr}, { ARMV8_V0, "v0", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V1, "v1", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V2, "v2", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V3, "v3", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V4, "v4", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V5, "v5", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V6, "v6", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V7, "v7", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V8, "v8", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V9, "v9", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V10, "v10", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V11, "v11", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V12, "v12", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V13, "v13", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V14, "v14", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V15, "v15", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V16, "v16", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V17, "v17", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V18, "v18", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V19, "v19", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V20, "v20", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V21, "v21", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V22, "v22", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V23, "v23", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V24, "v24", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V25, "v25", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V26, "v26", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V27, "v27", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V28, "v28", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V29, "v29", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V30, "v30", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_V31, "v31", 128, ARM_MODE_ANY, REG_TYPE_ARCH_DEFINED, "simdfp", "org.gnu.gdb.aarch64.fpu", aarch64v}, { ARMV8_FPSR, "fpsr", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "simdfp", "org.gnu.gdb.aarch64.fpu", NULL}, { ARMV8_FPCR, "fpcr", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "simdfp", "org.gnu.gdb.aarch64.fpu", NULL}, { ARMV8_ELR_EL1, "ELR_EL1", 64, ARMV8_64_EL1H, REG_TYPE_CODE_PTR, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_ESR_EL1, "ESR_EL1", 32, ARMV8_64_EL1H, REG_TYPE_UINT32, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_SPSR_EL1, "SPSR_EL1", 32, ARMV8_64_EL1H, REG_TYPE_UINT32, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_ELR_EL2, "ELR_EL2", 64, ARMV8_64_EL2H, REG_TYPE_CODE_PTR, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_ESR_EL2, "ESR_EL2", 32, ARMV8_64_EL2H, REG_TYPE_UINT32, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_SPSR_EL2, "SPSR_EL2", 32, ARMV8_64_EL2H, REG_TYPE_UINT32, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_ELR_EL3, "ELR_EL3", 64, ARMV8_64_EL3H, REG_TYPE_CODE_PTR, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_ESR_EL3, "ESR_EL3", 32, ARMV8_64_EL3H, REG_TYPE_UINT32, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_SPSR_EL3, "SPSR_EL3", 32, ARMV8_64_EL3H, REG_TYPE_UINT32, "banked", "net.sourceforge.openocd.banked", NULL}, { ARMV8_PAUTH_DMASK, "pauth_dmask", 64, ARM_MODE_ANY, REG_TYPE_UINT64, NULL, "org.gnu.gdb.aarch64.pauth", NULL}, { ARMV8_PAUTH_CMASK, "pauth_cmask", 64, ARM_MODE_ANY, REG_TYPE_UINT64, NULL, "org.gnu.gdb.aarch64.pauth", NULL}, }; static const struct { unsigned id; unsigned mapping; const char *name; unsigned bits; enum arm_mode mode; enum reg_type type; const char *group; const char *feature; } armv8_regs32[] = { { ARMV8_R0, 0, "r0", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R1, 0, "r1", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R2, 0, "r2", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R3, 0, "r3", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R4, 0, "r4", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R5, 0, "r5", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R6, 0, "r6", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R7, 0, "r7", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R8, 0, "r8", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R9, 0, "r9", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R10, 0, "r10", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R11, 0, "r11", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R12, 0, "r12", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R13, 0, "sp", 32, ARM_MODE_ANY, REG_TYPE_DATA_PTR, "general", "org.gnu.gdb.arm.core" }, { ARMV8_R14, 0, "lr", 32, ARM_MODE_ANY, REG_TYPE_CODE_PTR, "general", "org.gnu.gdb.arm.core" }, { ARMV8_PC, 0, "pc", 32, ARM_MODE_ANY, REG_TYPE_CODE_PTR, "general", "org.gnu.gdb.arm.core" }, { ARMV8_XPSR, 0, "cpsr", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "general", "org.gnu.gdb.arm.core" }, { ARMV8_V0, 0, "d0", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V0, 8, "d1", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V1, 0, "d2", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V1, 8, "d3", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V2, 0, "d4", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V2, 8, "d5", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V3, 0, "d6", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V3, 8, "d7", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V4, 0, "d8", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V4, 8, "d9", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V5, 0, "d10", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V5, 8, "d11", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V6, 0, "d12", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V6, 8, "d13", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V7, 0, "d14", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V7, 8, "d15", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V8, 0, "d16", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V8, 8, "d17", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V9, 0, "d18", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V9, 8, "d19", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V10, 0, "d20", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V10, 8, "d21", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V11, 0, "d22", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V11, 8, "d23", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V12, 0, "d24", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V12, 8, "d25", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V13, 0, "d26", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V13, 8, "d27", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V14, 0, "d28", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V14, 8, "d29", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V15, 0, "d30", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_V15, 8, "d31", 64, ARM_MODE_ANY, REG_TYPE_IEEE_DOUBLE, NULL, "org.gnu.gdb.arm.vfp"}, { ARMV8_FPSR, 0, "fpscr", 32, ARM_MODE_ANY, REG_TYPE_UINT32, "float", "org.gnu.gdb.arm.vfp"}, }; #define ARMV8_NUM_REGS ARRAY_SIZE(armv8_regs) #define ARMV8_NUM_REGS32 ARRAY_SIZE(armv8_regs32) static int armv8_get_core_reg(struct reg *reg) { struct arm_reg *armv8_reg = reg->arch_info; struct target *target = armv8_reg->target; struct arm *arm = target_to_arm(target); if (target->state != TARGET_HALTED) return ERROR_TARGET_NOT_HALTED; return arm->read_core_reg(target, reg, armv8_reg->num, arm->core_mode); } static int armv8_set_core_reg(struct reg *reg, uint8_t *buf) { struct arm_reg *armv8_reg = reg->arch_info; struct target *target = armv8_reg->target; struct arm *arm = target_to_arm(target); uint64_t value = buf_get_u64(buf, 0, reg->size); if (target->state != TARGET_HALTED) return ERROR_TARGET_NOT_HALTED; if (reg->size <= 64) { if (reg == arm->cpsr) armv8_set_cpsr(arm, (uint32_t)value); else { buf_set_u64(reg->value, 0, reg->size, value); reg->valid = true; } } else if (reg->size <= 128) { uint64_t hvalue = buf_get_u64(buf + 8, 0, reg->size - 64); buf_set_u64(reg->value, 0, 64, value); buf_set_u64(reg->value + 8, 0, reg->size - 64, hvalue); reg->valid = true; } reg->dirty = true; return ERROR_OK; } static const struct reg_arch_type armv8_reg_type = { .get = armv8_get_core_reg, .set = armv8_set_core_reg, }; static int armv8_get_core_reg32(struct reg *reg) { struct arm_reg *armv8_reg = reg->arch_info; struct target *target = armv8_reg->target; struct arm *arm = target_to_arm(target); struct reg_cache *cache = arm->core_cache; struct reg *reg64; int retval; if (target->state != TARGET_HALTED) return ERROR_TARGET_NOT_HALTED; /* get the corresponding Aarch64 register */ reg64 = cache->reg_list + armv8_reg->num; if (reg64->valid) { reg->valid = true; return ERROR_OK; } retval = arm->read_core_reg(target, reg64, armv8_reg->num, arm->core_mode); if (retval == ERROR_OK) reg->valid = reg64->valid; return retval; } static int armv8_set_core_reg32(struct reg *reg, uint8_t *buf) { struct arm_reg *armv8_reg = reg->arch_info; struct target *target = armv8_reg->target; struct arm *arm = target_to_arm(target); struct reg_cache *cache = arm->core_cache; struct reg *reg64 = cache->reg_list + armv8_reg->num; uint32_t value = buf_get_u32(buf, 0, 32); if (target->state != TARGET_HALTED) return ERROR_TARGET_NOT_HALTED; if (reg64 == arm->cpsr) { armv8_set_cpsr(arm, value); } else { if (reg->size <= 32) buf_set_u32(reg->value, 0, 32, value); else if (reg->size <= 64) { uint64_t value64 = buf_get_u64(buf, 0, 64); buf_set_u64(reg->value, 0, 64, value64); } reg->valid = true; reg64->valid = true; } reg64->dirty = true; return ERROR_OK; } static const struct reg_arch_type armv8_reg32_type = { .get = armv8_get_core_reg32, .set = armv8_set_core_reg32, }; /** Builds cache of architecturally defined registers. */ struct reg_cache *armv8_build_reg_cache(struct target *target) { struct armv8_common *armv8 = target_to_armv8(target); struct arm *arm = &armv8->arm; int num_regs = ARMV8_NUM_REGS; int num_regs32 = ARMV8_NUM_REGS32; struct reg_cache **cache_p = register_get_last_cache_p(&target->reg_cache); struct reg_cache *cache = malloc(sizeof(struct reg_cache)); struct reg_cache *cache32 = malloc(sizeof(struct reg_cache)); struct reg *reg_list = calloc(num_regs, sizeof(struct reg)); struct reg *reg_list32 = calloc(num_regs32, sizeof(struct reg)); struct arm_reg *arch_info = calloc(num_regs, sizeof(struct arm_reg)); struct reg_feature *feature; int i; /* Build the process context cache */ cache->name = "Aarch64 registers"; cache->next = cache32; cache->reg_list = reg_list; cache->num_regs = num_regs; for (i = 0; i < num_regs; i++) { arch_info[i].num = armv8_regs[i].id; arch_info[i].mode = armv8_regs[i].mode; arch_info[i].target = target; arch_info[i].arm = arm; reg_list[i].name = armv8_regs[i].name; reg_list[i].size = armv8_regs[i].bits; reg_list[i].value = &arch_info[i].value[0]; reg_list[i].type = &armv8_reg_type; reg_list[i].arch_info = &arch_info[i]; reg_list[i].group = armv8_regs[i].group; reg_list[i].number = i; reg_list[i].exist = true; reg_list[i].caller_save = true; /* gdb defaults to true */ feature = calloc(1, sizeof(struct reg_feature)); if (feature) { feature->name = armv8_regs[i].feature; reg_list[i].feature = feature; } else LOG_ERROR("unable to allocate feature list"); reg_list[i].reg_data_type = calloc(1, sizeof(struct reg_data_type)); if (reg_list[i].reg_data_type) { if (!armv8_regs[i].data_type) reg_list[i].reg_data_type->type = armv8_regs[i].type; else *reg_list[i].reg_data_type = *armv8_regs[i].data_type; } else LOG_ERROR("unable to allocate reg type list"); if (i == ARMV8_PAUTH_CMASK || i == ARMV8_PAUTH_DMASK) reg_list[i].exist = armv8->enable_pauth; } arm->cpsr = reg_list + ARMV8_XPSR; arm->pc = reg_list + ARMV8_PC; arm->core_cache = cache; /* shadow cache for ARM mode registers */ cache32->name = "Aarch32 registers"; cache32->next = NULL; cache32->reg_list = reg_list32; cache32->num_regs = num_regs32; for (i = 0; i < num_regs32; i++) { reg_list32[i].name = armv8_regs32[i].name; reg_list32[i].size = armv8_regs32[i].bits; reg_list32[i].value = &arch_info[armv8_regs32[i].id].value[armv8_regs32[i].mapping]; reg_list32[i].type = &armv8_reg32_type; reg_list32[i].arch_info = &arch_info[armv8_regs32[i].id]; reg_list32[i].group = armv8_regs32[i].group; reg_list32[i].number = i; reg_list32[i].exist = true; reg_list32[i].caller_save = true; feature = calloc(1, sizeof(struct reg_feature)); if (feature) { feature->name = armv8_regs32[i].feature; reg_list32[i].feature = feature; } else LOG_ERROR("unable to allocate feature list"); reg_list32[i].reg_data_type = calloc(1, sizeof(struct reg_data_type)); if (reg_list32[i].reg_data_type) reg_list32[i].reg_data_type->type = armv8_regs32[i].type; else LOG_ERROR("unable to allocate reg type list"); } (*cache_p) = cache; return cache; } struct reg *armv8_reg_current(struct arm *arm, unsigned regnum) { struct reg *r; if (regnum > (ARMV8_LAST_REG - 1)) return NULL; r = arm->core_cache->reg_list + regnum; return r; } static void armv8_free_cache(struct reg_cache *cache, bool regs32) { struct reg *reg; unsigned int i; if (!cache) return; for (i = 0; i < cache->num_regs; i++) { reg = &cache->reg_list[i]; free(reg->feature); free(reg->reg_data_type); } if (!regs32) free(cache->reg_list[0].arch_info); free(cache->reg_list); free(cache); } void armv8_free_reg_cache(struct target *target) { struct armv8_common *armv8 = target_to_armv8(target); struct arm *arm = &armv8->arm; struct reg_cache *cache = NULL, *cache32 = NULL; cache = arm->core_cache; if (cache) cache32 = cache->next; armv8_free_cache(cache32, true); armv8_free_cache(cache, false); arm->core_cache = NULL; } const struct command_registration armv8_command_handlers[] = { { .name = "catch_exc", .handler = armv8_handle_exception_catch_command, .mode = COMMAND_EXEC, .help = "configure exception catch", .usage = "[(nsec_el1,nsec_el2,sec_el1,sec_el3)+,off]", }, { .name = "pauth", .handler = armv8_pauth_command, .mode = COMMAND_CONFIG, .help = "enable or disable providing GDB with an 8-bytes mask to " "remove signature bits added by pointer authentication." "Pointer authentication feature is broken until gdb 12.1, going to be fixed. " "Consider using a newer version of gdb if you want enable " "pauth feature.", .usage = "[on|off]", }, COMMAND_REGISTRATION_DONE }; const char *armv8_get_gdb_arch(struct target *target) { struct arm *arm = target_to_arm(target); return arm->core_state == ARM_STATE_AARCH64 ? "aarch64" : "arm"; } int armv8_get_gdb_reg_list(struct target *target, struct reg **reg_list[], int *reg_list_size, enum target_register_class reg_class) { struct arm *arm = target_to_arm(target); int i; if (arm->core_state == ARM_STATE_AARCH64) { LOG_DEBUG("Creating Aarch64 register list for target %s", target_name(target)); switch (reg_class) { case REG_CLASS_GENERAL: *reg_list_size = ARMV8_V0; *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size)); for (i = 0; i < *reg_list_size; i++) (*reg_list)[i] = armv8_reg_current(arm, i); return ERROR_OK; case REG_CLASS_ALL: *reg_list_size = ARMV8_LAST_REG; *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size)); for (i = 0; i < *reg_list_size; i++) (*reg_list)[i] = armv8_reg_current(arm, i); return ERROR_OK; default: LOG_ERROR("not a valid register class type in query."); return ERROR_FAIL; } } else { struct reg_cache *cache32 = arm->core_cache->next; LOG_DEBUG("Creating Aarch32 register list for target %s", target_name(target)); switch (reg_class) { case REG_CLASS_GENERAL: *reg_list_size = ARMV8_R14 + 3; *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size)); for (i = 0; i < *reg_list_size; i++) (*reg_list)[i] = cache32->reg_list + i; return ERROR_OK; case REG_CLASS_ALL: *reg_list_size = cache32->num_regs; *reg_list = malloc(sizeof(struct reg *) * (*reg_list_size)); for (i = 0; i < *reg_list_size; i++) (*reg_list)[i] = cache32->reg_list + i; return ERROR_OK; default: LOG_ERROR("not a valid register class type in query."); return ERROR_FAIL; } } } int armv8_set_dbgreg_bits(struct armv8_common *armv8, unsigned int reg, unsigned long mask, unsigned long value) { uint32_t tmp; /* Read register */ int retval = mem_ap_read_atomic_u32(armv8->debug_ap, armv8->debug_base + reg, &tmp); if (retval != ERROR_OK) return retval; /* clear bitfield */ tmp &= ~mask; /* put new value */ tmp |= value & mask; /* write new value */ retval = mem_ap_write_atomic_u32(armv8->debug_ap, armv8->debug_base + reg, tmp); return retval; }