X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Famd64-linux-tdep.c;h=07820a05597053668baa001d97e2fe8a7c142067;hb=4c6ee6465acc58f0f86c44668c4e862901186239;hp=31d2b160dc8c59e6abefcea16ab2cc87fbb56be2;hpb=0dba2a6c09c4010dfb2eb5abdd991208374947c4;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c index 31d2b160dc..07820a0559 100644 --- a/gdb/amd64-linux-tdep.c +++ b/gdb/amd64-linux-tdep.c @@ -1,6 +1,6 @@ /* Target-dependent code for GNU/Linux x86-64. - Copyright (C) 2001-2017 Free Software Foundation, Inc. + Copyright (C) 2001-2020 Free Software Foundation, Inc. Contributed by Jiri Smid, SuSE Labs. This file is part of GDB. @@ -33,23 +33,14 @@ #include "amd64-linux-tdep.h" #include "i386-linux-tdep.h" #include "linux-tdep.h" -#include "x86-xstate.h" +#include "gdbsupport/x86-xstate.h" #include "amd64-tdep.h" #include "solib-svr4.h" #include "xml-syscall.h" #include "glibc-tdep.h" - -#include "features/i386/amd64-linux.c" -#include "features/i386/amd64-avx-linux.c" -#include "features/i386/amd64-mpx-linux.c" -#include "features/i386/amd64-avx-mpx-linux.c" -#include "features/i386/amd64-avx-avx512-linux.c" -#include "features/i386/amd64-avx-mpx-avx512-pku-linux.c" - -#include "features/i386/x32-linux.c" -#include "features/i386/x32-avx-linux.c" -#include "features/i386/x32-avx-avx512-linux.c" +#include "arch/amd64.h" +#include "target-descriptions.h" /* The syscall's XML filename for i386. */ #define XML_SYSCALL_FILENAME_AMD64 "syscalls/amd64-linux.xml" @@ -231,9 +222,9 @@ amd64_linux_sigcontext_addr (struct frame_info *this_frame) static LONGEST amd64_linux_get_syscall_number (struct gdbarch *gdbarch, - ptid_t ptid) + thread_info *thread) { - struct regcache *regcache = get_thread_regcache (ptid); + struct regcache *regcache = get_thread_regcache (thread); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* The content of a register. */ gdb_byte buf[8]; @@ -243,7 +234,7 @@ amd64_linux_get_syscall_number (struct gdbarch *gdbarch, /* Getting the system call number from the register. When dealing with x86_64 architecture, this information is stored at %rax register. */ - regcache_cooked_read (regcache, AMD64_LINUX_ORIG_RAX_REGNUM, buf); + regcache->cooked_read (AMD64_LINUX_ORIG_RAX_REGNUM, buf); ret = extract_signed_integer (buf, 8, byte_order); @@ -372,6 +363,9 @@ amd64_all_but_ip_registers_record (struct regcache *regcache) static enum gdb_syscall amd64_canonicalize_syscall (enum amd64_syscall syscall_number) { + DIAGNOSTIC_PUSH + DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES + switch (syscall_number) { case amd64_sys_read: case amd64_x32_sys_read: @@ -1439,6 +1433,8 @@ amd64_canonicalize_syscall (enum amd64_syscall syscall_number) default: return gdb_sys_no_syscall; } + + DIAGNOSTIC_POP } /* Parse the arguments of current system call instruction and record @@ -1575,6 +1571,35 @@ amd64_linux_record_signal (struct gdbarch *gdbarch, return 0; } +const target_desc * +amd64_linux_read_description (uint64_t xcr0_features_bit, bool is_x32) +{ + static target_desc *amd64_linux_tdescs \ + [2/*AVX*/][2/*MPX*/][2/*AVX512*/][2/*PKRU*/] = {}; + static target_desc *x32_linux_tdescs[2/*AVX*/][2/*AVX512*/] = {}; + + target_desc **tdesc; + + if (is_x32) + { + tdesc = &x32_linux_tdescs[(xcr0_features_bit & X86_XSTATE_AVX) ? 1 : 0 ] + [(xcr0_features_bit & X86_XSTATE_AVX512) ? 1 : 0]; + } + else + { + tdesc = &amd64_linux_tdescs[(xcr0_features_bit & X86_XSTATE_AVX) ? 1 : 0] + [(xcr0_features_bit & X86_XSTATE_MPX) ? 1 : 0] + [(xcr0_features_bit & X86_XSTATE_AVX512) ? 1 : 0] + [(xcr0_features_bit & X86_XSTATE_PKRU) ? 1 : 0]; + } + + if (*tdesc == NULL) + *tdesc = amd64_create_target_description (xcr0_features_bit, is_x32, + true, true); + + return *tdesc; +} + /* Get Linux/x86 target description from core dump. */ static const struct target_desc * @@ -1585,42 +1610,8 @@ amd64_linux_core_read_description (struct gdbarch *gdbarch, /* Linux/x86-64. */ uint64_t xcr0 = i386_linux_core_read_xcr0 (abfd); - switch (xcr0 & X86_XSTATE_ALL_MASK) - { - case X86_XSTATE_AVX_MPX_AVX512_PKU_MASK: - if (gdbarch_ptr_bit (gdbarch) == 32) - /* No MPX on x32, fallback to AVX-AVX512. */ - return tdesc_x32_avx_avx512_linux; - else - return tdesc_amd64_avx_mpx_avx512_pku_linux; - case X86_XSTATE_AVX_AVX512_MASK: - if (gdbarch_ptr_bit (gdbarch) == 32) - return tdesc_x32_avx_avx512_linux; - else - return tdesc_amd64_avx_avx512_linux; - case X86_XSTATE_MPX_MASK: - if (gdbarch_ptr_bit (gdbarch) == 32) - /* No MPX on x32, fallback to AVX-AVX512. */ - return tdesc_x32_avx_linux; - else - return tdesc_amd64_mpx_linux; - case X86_XSTATE_AVX_MPX_MASK: - if (gdbarch_ptr_bit (gdbarch) == 32) - /* No MPX on x32, fallback to AVX-AVX512. */ - return tdesc_x32_avx_linux; - else - return tdesc_amd64_avx_mpx_linux; - case X86_XSTATE_AVX_MASK: - if (gdbarch_ptr_bit (gdbarch) == 32) - return tdesc_x32_avx_linux; - else - return tdesc_amd64_avx_linux; - default: - if (gdbarch_ptr_bit (gdbarch) == 32) - return tdesc_x32_linux; - else - return tdesc_amd64_linux; - } + return amd64_linux_read_description (xcr0 & X86_XSTATE_ALL_MASK, + gdbarch_ptr_bit (gdbarch) == 32); } /* Similar to amd64_supply_fpregset, but use XSAVE extended state. */ @@ -1660,9 +1651,9 @@ amd64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch, { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - cb (".reg", 27 * 8, &i386_gregset, NULL, cb_data); - cb (".reg2", 512, &amd64_fpregset, NULL, cb_data); - cb (".reg-xstate", X86_XSTATE_SIZE (tdep->xcr0), + cb (".reg", 27 * 8, 27 * 8, &i386_gregset, NULL, cb_data); + cb (".reg2", 512, 512, &amd64_fpregset, NULL, cb_data); + cb (".reg-xstate", X86_XSTATE_SIZE (tdep->xcr0), X86_XSTATE_SIZE (tdep->xcr0), &amd64_linux_xstateregset, "XSAVE extended state", cb_data); } @@ -1744,7 +1735,7 @@ amd64_dtrace_disable_probe (struct gdbarch *gdbarch, CORE_ADDR addr) static void amd64_dtrace_parse_probe_argument (struct gdbarch *gdbarch, - struct parser_state *pstate, + struct expr_builder *builder, int narg) { struct stoken str; @@ -1767,11 +1758,11 @@ amd64_dtrace_parse_probe_argument (struct gdbarch *gdbarch, int regno = arg_reg_map[narg]; const char *regname = user_reg_map_regnum_to_name (gdbarch, regno); - write_exp_elt_opcode (pstate, OP_REGISTER); + write_exp_elt_opcode (builder, OP_REGISTER); str.ptr = regname; str.length = strlen (regname); - write_exp_string (pstate, str); - write_exp_elt_opcode (pstate, OP_REGISTER); + write_exp_string (builder, str); + write_exp_elt_opcode (builder, OP_REGISTER); } else { @@ -1779,27 +1770,27 @@ amd64_dtrace_parse_probe_argument (struct gdbarch *gdbarch, const char *regname = user_reg_map_regnum_to_name (gdbarch, AMD64_RSP_REGNUM); /* Displacement. */ - write_exp_elt_opcode (pstate, OP_LONG); - write_exp_elt_type (pstate, builtin_type (gdbarch)->builtin_long); - write_exp_elt_longcst (pstate, narg - 6); - write_exp_elt_opcode (pstate, OP_LONG); + write_exp_elt_opcode (builder, OP_LONG); + write_exp_elt_type (builder, builtin_type (gdbarch)->builtin_long); + write_exp_elt_longcst (builder, narg - 6); + write_exp_elt_opcode (builder, OP_LONG); /* Register: SP. */ - write_exp_elt_opcode (pstate, OP_REGISTER); + write_exp_elt_opcode (builder, OP_REGISTER); str.ptr = regname; str.length = strlen (regname); - write_exp_string (pstate, str); - write_exp_elt_opcode (pstate, OP_REGISTER); + write_exp_string (builder, str); + write_exp_elt_opcode (builder, OP_REGISTER); - write_exp_elt_opcode (pstate, BINOP_ADD); + write_exp_elt_opcode (builder, BINOP_ADD); /* Cast to long. */ - write_exp_elt_opcode (pstate, UNOP_CAST); - write_exp_elt_type (pstate, + write_exp_elt_opcode (builder, UNOP_CAST); + write_exp_elt_type (builder, lookup_pointer_type (builtin_type (gdbarch)->builtin_long)); - write_exp_elt_opcode (pstate, UNOP_CAST); + write_exp_elt_opcode (builder, UNOP_CAST); - write_exp_elt_opcode (pstate, UNOP_IND); + write_exp_elt_opcode (builder, UNOP_IND); } } @@ -1873,7 +1864,8 @@ amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) tdep->gregset_num_regs = ARRAY_SIZE (amd64_linux_gregset_reg_offset); tdep->sizeof_gregset = 27 * 8; - amd64_init_abi (info, gdbarch, tdesc_amd64_linux); + amd64_init_abi (info, gdbarch, + amd64_linux_read_description (X86_XSTATE_SSE_MASK, false)); const target_desc *tdesc = tdep->tdesc; @@ -2086,7 +2078,9 @@ amd64_x32_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) tdep->gregset_num_regs = ARRAY_SIZE (amd64_linux_gregset_reg_offset); tdep->sizeof_gregset = 27 * 8; - amd64_x32_init_abi (info, gdbarch, tdesc_x32_linux); + amd64_x32_init_abi (info, gdbarch, + amd64_linux_read_description (X86_XSTATE_SSE_MASK, + true)); /* Reserve a number for orig_rax. */ set_gdbarch_num_regs (gdbarch, AMD64_LINUX_NUM_REGS); @@ -2277,10 +2271,6 @@ amd64_x32_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_ilp32_fetch_link_map_offsets); } - - -/* Provide a prototype to silence -Wmissing-prototypes. */ -extern void _initialize_amd64_linux_tdep (void); void _initialize_amd64_linux_tdep (void) @@ -2289,16 +2279,4 @@ _initialize_amd64_linux_tdep (void) GDB_OSABI_LINUX, amd64_linux_init_abi); gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x64_32, GDB_OSABI_LINUX, amd64_x32_linux_init_abi); - - /* Initialize the Linux target description. */ - initialize_tdesc_amd64_linux (); - initialize_tdesc_amd64_avx_linux (); - initialize_tdesc_amd64_mpx_linux (); - initialize_tdesc_amd64_avx_mpx_linux (); - initialize_tdesc_amd64_avx_avx512_linux (); - initialize_tdesc_amd64_avx_mpx_avx512_pku_linux (); - - initialize_tdesc_x32_linux (); - initialize_tdesc_x32_avx_linux (); - initialize_tdesc_x32_avx_avx512_linux (); }