X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Famd64-linux-tdep.c;h=ef9248d708d35724a97500aacf04e0a07830fff3;hb=00431a78b28f913a9d5c912c49680e39cfd20847;hp=0e2f285d2fdd21a6467f3325085ea19108d3c42c;hpb=51547df62c155231530ca502c485659f3d2b66cb;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/amd64-linux-tdep.c b/gdb/amd64-linux-tdep.c index 0e2f285d2f..ef9248d708 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) 2001-2018 Free Software Foundation, Inc. Contributed by Jiri Smid, SuSE Labs. This file is part of GDB. @@ -39,17 +39,8 @@ #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 +1571,34 @@ 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); + + return *tdesc; +} + /* Get Linux/x86 target description from core dump. */ static const struct target_desc * @@ -1585,42 +1609,8 @@ 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. */ @@ -1848,8 +1838,6 @@ amd64_linux_init_abi_common(struct gdbarch_info info, struct gdbarch *gdbarch) set_gdbarch_displaced_step_copy_insn (gdbarch, amd64_displaced_step_copy_insn); set_gdbarch_displaced_step_fixup (gdbarch, amd64_displaced_step_fixup); - set_gdbarch_displaced_step_free_closure (gdbarch, - simple_displaced_step_free_closure); set_gdbarch_displaced_step_location (gdbarch, linux_displaced_step_location); @@ -1865,9 +1853,7 @@ static void amd64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - const struct target_desc *tdesc = info.target_desc; - struct tdesc_arch_data *tdesc_data - = (struct tdesc_arch_data *) info.tdep_info; + struct tdesc_arch_data *tdesc_data = info.tdesc_data; const struct tdesc_feature *feature; int valid_p; @@ -1877,15 +1863,14 @@ 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); + amd64_init_abi (info, gdbarch, + amd64_linux_read_description (X86_XSTATE_SSE_MASK, false)); + + const target_desc *tdesc = tdep->tdesc; /* Reserve a number for orig_rax. */ set_gdbarch_num_regs (gdbarch, AMD64_LINUX_NUM_REGS); - if (! tdesc_has_registers (tdesc)) - tdesc = tdesc_amd64_linux; - tdep->tdesc = tdesc; - feature = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.linux"); if (feature == NULL) return; @@ -2082,9 +2067,7 @@ static void amd64_x32_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); - const struct target_desc *tdesc = info.target_desc; - struct tdesc_arch_data *tdesc_data - = (struct tdesc_arch_data *) info.tdep_info; + struct tdesc_arch_data *tdesc_data = info.tdesc_data; const struct tdesc_feature *feature; int valid_p; @@ -2094,14 +2077,14 @@ 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); + 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); - if (! tdesc_has_registers (tdesc)) - tdesc = tdesc_x32_linux; - tdep->tdesc = tdesc; + const target_desc *tdesc = tdep->tdesc; feature = tdesc_find_feature (tdesc, "org.gnu.gdb.i386.linux"); if (feature == NULL) @@ -2287,10 +2270,6 @@ 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) @@ -2300,15 +2279,31 @@ _initialize_amd64_linux_tdep (void) 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 (); +#if GDB_SELF_TEST + struct + { + const char *xml; + uint64_t mask; + } xml_masks[] = { + { "i386/amd64-linux.xml", X86_XSTATE_SSE_MASK }, + { "i386/amd64-avx-linux.xml", X86_XSTATE_AVX_MASK }, + { "i386/amd64-mpx-linux.xml", X86_XSTATE_MPX_MASK }, + { "i386/amd64-avx-mpx-linux.xml", X86_XSTATE_AVX_MPX_MASK }, + { "i386/amd64-avx-avx512-linux.xml", X86_XSTATE_AVX_AVX512_MASK }, + { "i386/amd64-avx-mpx-avx512-pku-linux.xml", + X86_XSTATE_AVX_MPX_AVX512_PKU_MASK }, + { "i386/x32-linux.xml", X86_XSTATE_SSE_MASK }, + { "i386/x32-avx-linux.xml", X86_XSTATE_AVX_MASK }, + { "i386/x32-avx-avx512-linux.xml", X86_XSTATE_AVX_AVX512_MASK }, + }; + + for (auto &a : xml_masks) + { + auto tdesc = amd64_linux_read_description (a.mask, + startswith (a.xml, + "i386/x32")); + + selftests::record_xml_tdesc (a.xml, tdesc); + } +#endif /* GDB_SELF_TEST */ }