diff options
Diffstat (limited to 'gdb/i386-linux-tdep.c')
| -rw-r--r-- | gdb/i386-linux-tdep.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/gdb/i386-linux-tdep.c b/gdb/i386-linux-tdep.c index b23c109..34a1924 100644 --- a/gdb/i386-linux-tdep.c +++ b/gdb/i386-linux-tdep.c @@ -23,6 +23,7 @@ #include "frame.h" #include "value.h" #include "regcache.h" +#include "regset.h" #include "inferior.h" #include "osabi.h" #include "reggroups.h" @@ -36,9 +37,11 @@ #include "solib-svr4.h" #include "symtab.h" #include "arch-utils.h" -#include "regset.h" #include "xml-syscall.h" +#include "i387-tdep.h" +#include "i386-xstate.h" + /* The syscall's XML filename for i386. */ #define XML_SYSCALL_FILENAME_I386 "syscalls/i386-linux.xml" @@ -47,6 +50,7 @@ #include <stdint.h> #include "features/i386/i386-linux.c" +#include "features/i386/i386-avx-linux.c" /* Supported register note sections. */ static struct core_regset_section i386_linux_regset_sections[] = @@ -54,6 +58,7 @@ static struct core_regset_section i386_linux_regset_sections[] = { ".reg", 144, "general-purpose" }, { ".reg2", 108, "floating-point" }, { ".reg-xfp", 512, "extended floating-point" }, + { ".reg-xstate", I386_XSTATE_MAX_SIZE, "XSAVE extended state" }, { NULL, 0 } }; @@ -533,6 +538,7 @@ static int i386_linux_gregset_reg_offset[] = -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, 11 * 4 /* "orig_eax" */ }; @@ -560,6 +566,43 @@ static int i386_linux_sc_reg_offset[] = 0 * 4 /* %gs */ }; +/* Get XSAVE extended state xcr0 from core dump. */ + +uint64_t +i386_linux_core_read_xcr0 (struct gdbarch *gdbarch, + struct target_ops *target, bfd *abfd) +{ + asection *xstate = bfd_get_section_by_name (abfd, ".reg-xstate"); + uint64_t xcr0; + + if (xstate) + { + size_t size = bfd_section_size (abfd, xstate); + + /* Check extended state size. */ + if (size < I386_XSTATE_AVX_SIZE) + xcr0 = I386_XSTATE_SSE_MASK; + else + { + char contents[8]; + + if (! bfd_get_section_contents (abfd, xstate, contents, + I386_LINUX_XSAVE_XCR0_OFFSET, + 8)) + { + warning (_("Couldn't read `xcr0' bytes from `.reg-xstate' section in core file.")); + return 0; + } + + xcr0 = bfd_get_64 (abfd, contents); + } + } + else + xcr0 = I386_XSTATE_SSE_MASK; + + return xcr0; +} + /* Get Linux/x86 target description from core dump. */ static const struct target_desc * @@ -568,12 +611,17 @@ i386_linux_core_read_description (struct gdbarch *gdbarch, bfd *abfd) { asection *section = bfd_get_section_by_name (abfd, ".reg2"); + uint64_t xcr0; if (section == NULL) return NULL; /* Linux/i386. */ - return tdesc_i386_linux; + xcr0 = i386_linux_core_read_xcr0 (gdbarch, target, abfd); + if ((xcr0 & I386_XSTATE_AVX_MASK) == I386_XSTATE_AVX_MASK) + return tdesc_i386_avx_linux; + else + return tdesc_i386_linux; } static void @@ -623,6 +671,8 @@ i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) tdep->sc_reg_offset = i386_linux_sc_reg_offset; tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset); + tdep->xsave_xcr0_offset = I386_LINUX_XSAVE_XCR0_OFFSET; + set_gdbarch_process_record (gdbarch, i386_process_record); set_gdbarch_process_record_signal (gdbarch, i386_linux_record_signal); @@ -840,4 +890,5 @@ _initialize_i386_linux_tdep (void) /* Initialize the Linux target description */ initialize_tdesc_i386_linux (); + initialize_tdesc_i386_avx_linux (); } |