diff options
Diffstat (limited to 'qemu/target-ppc/gdbstub.c')
-rw-r--r-- | qemu/target-ppc/gdbstub.c | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/qemu/target-ppc/gdbstub.c b/qemu/target-ppc/gdbstub.c deleted file mode 100644 index 569c380cf..000000000 --- a/qemu/target-ppc/gdbstub.c +++ /dev/null @@ -1,320 +0,0 @@ -/* - * PowerPC gdb server stub - * - * Copyright (c) 2003-2005 Fabrice Bellard - * Copyright (c) 2013 SUSE LINUX Products GmbH - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, see <http://www.gnu.org/licenses/>. - */ -#include "qemu/osdep.h" -#include "qemu-common.h" -#include "exec/gdbstub.h" - -static int ppc_gdb_register_len_apple(int n) -{ - switch (n) { - case 0 ... 31: - /* gprs */ - return 8; - case 32 ... 63: - /* fprs */ - return 8; - case 64 ... 95: - return 16; - case 64+32: /* nip */ - case 65+32: /* msr */ - case 67+32: /* lr */ - case 68+32: /* ctr */ - case 69+32: /* xer */ - case 70+32: /* fpscr */ - return 8; - case 66+32: /* cr */ - return 4; - default: - return 0; - } -} - -static int ppc_gdb_register_len(int n) -{ - switch (n) { - case 0 ... 31: - /* gprs */ - return sizeof(target_ulong); - case 32 ... 63: - /* fprs */ - if (gdb_has_xml) { - return 0; - } - return 8; - case 66: - /* cr */ - return 4; - case 64: - /* nip */ - case 65: - /* msr */ - case 67: - /* lr */ - case 68: - /* ctr */ - case 69: - /* xer */ - return sizeof(target_ulong); - case 70: - /* fpscr */ - if (gdb_has_xml) { - return 0; - } - return sizeof(target_ulong); - default: - return 0; - } -} - -/* We need to present the registers to gdb in the "current" memory ordering. - For user-only mode we get this for free; TARGET_WORDS_BIGENDIAN is set to - the proper ordering for the binary, and cannot be changed. - For system mode, TARGET_WORDS_BIGENDIAN is always set, and we must check - the current mode of the chip to see if we're running in little-endian. */ -void ppc_maybe_bswap_register(CPUPPCState *env, uint8_t *mem_buf, int len) -{ -#ifndef CONFIG_USER_ONLY - if (!msr_le) { - /* do nothing */ - } else if (len == 4) { - bswap32s((uint32_t *)mem_buf); - } else if (len == 8) { - bswap64s((uint64_t *)mem_buf); - } else { - g_assert_not_reached(); - } -#endif -} - -/* Old gdb always expects FP registers. Newer (xml-aware) gdb only - * expects whatever the target description contains. Due to a - * historical mishap the FP registers appear in between core integer - * regs and PC, MSR, CR, and so forth. We hack round this by giving the - * FP regs zero size when talking to a newer gdb. - */ - -int ppc_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) -{ - PowerPCCPU *cpu = POWERPC_CPU(cs); - CPUPPCState *env = &cpu->env; - int r = ppc_gdb_register_len(n); - - if (!r) { - return r; - } - - if (n < 32) { - /* gprs */ - gdb_get_regl(mem_buf, env->gpr[n]); - } else if (n < 64) { - /* fprs */ - stfq_p(mem_buf, env->fpr[n-32]); - } else { - switch (n) { - case 64: - gdb_get_regl(mem_buf, env->nip); - break; - case 65: - gdb_get_regl(mem_buf, env->msr); - break; - case 66: - { - uint32_t cr = 0; - int i; - for (i = 0; i < 8; i++) { - cr |= env->crf[i] << (32 - ((i + 1) * 4)); - } - gdb_get_reg32(mem_buf, cr); - break; - } - case 67: - gdb_get_regl(mem_buf, env->lr); - break; - case 68: - gdb_get_regl(mem_buf, env->ctr); - break; - case 69: - gdb_get_regl(mem_buf, env->xer); - break; - case 70: - gdb_get_reg32(mem_buf, env->fpscr); - break; - } - } - ppc_maybe_bswap_register(env, mem_buf, r); - return r; -} - -int ppc_cpu_gdb_read_register_apple(CPUState *cs, uint8_t *mem_buf, int n) -{ - PowerPCCPU *cpu = POWERPC_CPU(cs); - CPUPPCState *env = &cpu->env; - int r = ppc_gdb_register_len_apple(n); - - if (!r) { - return r; - } - - if (n < 32) { - /* gprs */ - gdb_get_reg64(mem_buf, env->gpr[n]); - } else if (n < 64) { - /* fprs */ - stfq_p(mem_buf, env->fpr[n-32]); - } else if (n < 96) { - /* Altivec */ - stq_p(mem_buf, n - 64); - stq_p(mem_buf + 8, 0); - } else { - switch (n) { - case 64 + 32: - gdb_get_reg64(mem_buf, env->nip); - break; - case 65 + 32: - gdb_get_reg64(mem_buf, env->msr); - break; - case 66 + 32: - { - uint32_t cr = 0; - int i; - for (i = 0; i < 8; i++) { - cr |= env->crf[i] << (32 - ((i + 1) * 4)); - } - gdb_get_reg32(mem_buf, cr); - break; - } - case 67 + 32: - gdb_get_reg64(mem_buf, env->lr); - break; - case 68 + 32: - gdb_get_reg64(mem_buf, env->ctr); - break; - case 69 + 32: - gdb_get_reg64(mem_buf, env->xer); - break; - case 70 + 32: - gdb_get_reg64(mem_buf, env->fpscr); - break; - } - } - ppc_maybe_bswap_register(env, mem_buf, r); - return r; -} - -int ppc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) -{ - PowerPCCPU *cpu = POWERPC_CPU(cs); - CPUPPCState *env = &cpu->env; - int r = ppc_gdb_register_len(n); - - if (!r) { - return r; - } - ppc_maybe_bswap_register(env, mem_buf, r); - if (n < 32) { - /* gprs */ - env->gpr[n] = ldtul_p(mem_buf); - } else if (n < 64) { - /* fprs */ - env->fpr[n-32] = ldfq_p(mem_buf); - } else { - switch (n) { - case 64: - env->nip = ldtul_p(mem_buf); - break; - case 65: - ppc_store_msr(env, ldtul_p(mem_buf)); - break; - case 66: - { - uint32_t cr = ldl_p(mem_buf); - int i; - for (i = 0; i < 8; i++) { - env->crf[i] = (cr >> (32 - ((i + 1) * 4))) & 0xF; - } - break; - } - case 67: - env->lr = ldtul_p(mem_buf); - break; - case 68: - env->ctr = ldtul_p(mem_buf); - break; - case 69: - env->xer = ldtul_p(mem_buf); - break; - case 70: - /* fpscr */ - store_fpscr(env, ldtul_p(mem_buf), 0xffffffff); - break; - } - } - return r; -} -int ppc_cpu_gdb_write_register_apple(CPUState *cs, uint8_t *mem_buf, int n) -{ - PowerPCCPU *cpu = POWERPC_CPU(cs); - CPUPPCState *env = &cpu->env; - int r = ppc_gdb_register_len_apple(n); - - if (!r) { - return r; - } - ppc_maybe_bswap_register(env, mem_buf, r); - if (n < 32) { - /* gprs */ - env->gpr[n] = ldq_p(mem_buf); - } else if (n < 64) { - /* fprs */ - env->fpr[n-32] = ldfq_p(mem_buf); - } else { - switch (n) { - case 64 + 32: - env->nip = ldq_p(mem_buf); - break; - case 65 + 32: - ppc_store_msr(env, ldq_p(mem_buf)); - break; - case 66 + 32: - { - uint32_t cr = ldl_p(mem_buf); - int i; - for (i = 0; i < 8; i++) { - env->crf[i] = (cr >> (32 - ((i + 1) * 4))) & 0xF; - } - break; - } - case 67 + 32: - env->lr = ldq_p(mem_buf); - break; - case 68 + 32: - env->ctr = ldq_p(mem_buf); - break; - case 69 + 32: - env->xer = ldq_p(mem_buf); - break; - case 70 + 32: - /* fpscr */ - store_fpscr(env, ldq_p(mem_buf), 0xffffffff); - break; - } - } - return r; -} |