Support i386 AVX.
2010-04-07 H.J. Lu <hongjiu.lu@intel.com> * i386-linux-nat.c: Include "regset.h", "elf/common.h", <sys/uio.h> and "i386-xstate.h". (PTRACE_GETREGSET): New. (PTRACE_SETREGSET): Likewise. (fetch_xstateregs): Likewise. (store_xstateregs): Likewise. (GETXSTATEREGS_SUPPLIES): Likewise. (regmap): Include 8 upper YMM registers. (i386_linux_fetch_inferior_registers): Support XSAVE extended state. (i386_linux_store_inferior_registers): Likewise. (i386_linux_read_description): Check and enable AVX target descriptions. * i386-linux-tdep.c: Include "regset.h", "i387-tdep.h", "i386-xstate.h" and "features/i386/i386-avx-linux.c". (i386_linux_regset_sections): Add ".reg-xstate". (i386_linux_gregset_reg_offset): Include 8 upper YMM registers. (i386_linux_core_read_xcr0): New. (i386_linux_core_read_description): Check and enable AVX target description. (i386_linux_init_abi): Set xsave_xcr0_offset. (_initialize_i386_linux_tdep): Call initialize_tdesc_i386_avx_linux. * i386-linux-tdep.h (I386_LINUX_ORIG_EAX_REGNUM): Replace I386_SSE_NUM_REGS with I386_AVX_NUM_REGS. (i386_linux_core_read_xcr0): New. (tdesc_i386_avx_linux): Likewise. (I386_LINUX_XSAVE_XCR0_OFFSET): Likewise. * i386-tdep.c: Include "i386-xstate.h" and "features/i386/i386-avx.c". (i386_ymm_names): New. (i386_ymmh_names): Likewise. (i386_ymmh_regnum_p): Likewise. (i386_ymm_regnum_p): Likewise. (i386_xmm_regnum_p): Likewise. (i386_register_name): Likewise. (i386_ymm_type): Likewise. (i386_supply_xstateregset): Likewise. (i386_collect_xstateregset): Likewise. (i386_sse_regnum_p): Removed. (i386_pseudo_register_name): Support pseudo YMM registers. (i386_pseudo_register_type): Likewise. (i386_pseudo_register_read): Likewise. (i386_pseudo_register_write): Likewise. (i386_dbx_reg_to_regnum): Return %ymmN register number for %xmmN if AVX is available. (i386_regset_from_core_section): Support .reg-xstate section. (i386_register_reggroup_p): Supper upper YMM and YMM registers. (i386_process_record): Replace i386_sse_regnum_p with i386_xmm_regnum_p. (i386_validate_tdesc_p): Support org.gnu.gdb.i386.avx feature. Set ymmh_register_names, num_ymm_regs, ymm0h_regnum and xcr0. (i386_gdbarch_init): Set xstateregset. Set xsave_xcr0_offset. Call set_gdbarch_register_name. Replace I386_SSE_NUM_REGS with I386_AVX_NUM_REGS. Set ymmh_register_names, ymm0h_regnum and num_ymm_regs. Add num_ymm_regs to set_gdbarch_num_pseudo_regs. Set ymm0_regnum. (_initialize_i386_tdep): Call initialize_tdesc_i386_avx. * i386-tdep.h (gdbarch_tdep): Add xstateregset, ymm0_regnum, xcr0, xsave_xcr0_offset, ymm0h_regnum, ymmh_register_names and i386_ymm_type. (i386_regnum): Add I386_YMM0H_REGNUM, and I386_YMM7H_REGNUM. (I386_AVX_NUM_REGS): New. (i386_xmm_regnum_p): Likewise. (i386_ymm_regnum_p): Likewise. (i386_ymmh_regnum_p): Likewise. * common/i386-xstate.h: New.
This commit is contained in:
H.J. Lu
parent
98adf0f383
commit
c131fcee79
7 changed files with 649 additions and 56 deletions
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@ -23,6 +23,7 @@
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#include "frame.h"
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#include "value.h"
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#include "regcache.h"
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#include "regset.h"
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#include "inferior.h"
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#include "osabi.h"
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#include "reggroups.h"
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@ -36,9 +37,11 @@
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#include "solib-svr4.h"
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#include "symtab.h"
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#include "arch-utils.h"
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#include "regset.h"
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#include "xml-syscall.h"
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#include "i387-tdep.h"
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#include "i386-xstate.h"
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/* The syscall's XML filename for i386. */
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#define XML_SYSCALL_FILENAME_I386 "syscalls/i386-linux.xml"
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@ -47,6 +50,7 @@
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#include <stdint.h>
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#include "features/i386/i386-linux.c"
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#include "features/i386/i386-avx-linux.c"
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/* Supported register note sections. */
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static struct core_regset_section i386_linux_regset_sections[] =
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@ -54,6 +58,7 @@ static struct core_regset_section i386_linux_regset_sections[] =
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{ ".reg", 144, "general-purpose" },
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{ ".reg2", 108, "floating-point" },
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{ ".reg-xfp", 512, "extended floating-point" },
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{ ".reg-xstate", I386_XSTATE_MAX_SIZE, "XSAVE extended state" },
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{ NULL, 0 }
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};
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@ -533,6 +538,7 @@ static int i386_linux_gregset_reg_offset[] =
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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-1,
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-1, -1, -1, -1, -1, -1, -1, -1,
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11 * 4 /* "orig_eax" */
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};
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@ -560,6 +566,43 @@ static int i386_linux_sc_reg_offset[] =
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0 * 4 /* %gs */
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};
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/* Get XSAVE extended state xcr0 from core dump. */
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uint64_t
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i386_linux_core_read_xcr0 (struct gdbarch *gdbarch,
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struct target_ops *target, bfd *abfd)
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{
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asection *xstate = bfd_get_section_by_name (abfd, ".reg-xstate");
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uint64_t xcr0;
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if (xstate)
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{
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size_t size = bfd_section_size (abfd, xstate);
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/* Check extended state size. */
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if (size < I386_XSTATE_AVX_SIZE)
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xcr0 = I386_XSTATE_SSE_MASK;
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else
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{
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char contents[8];
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if (! bfd_get_section_contents (abfd, xstate, contents,
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I386_LINUX_XSAVE_XCR0_OFFSET,
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8))
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{
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warning (_("Couldn't read `xcr0' bytes from `.reg-xstate' section in core file."));
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return 0;
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}
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xcr0 = bfd_get_64 (abfd, contents);
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}
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}
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else
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xcr0 = I386_XSTATE_SSE_MASK;
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return xcr0;
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}
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/* Get Linux/x86 target description from core dump. */
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static const struct target_desc *
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@ -568,12 +611,17 @@ i386_linux_core_read_description (struct gdbarch *gdbarch,
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bfd *abfd)
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{
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asection *section = bfd_get_section_by_name (abfd, ".reg2");
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uint64_t xcr0;
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if (section == NULL)
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return NULL;
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/* Linux/i386. */
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return tdesc_i386_linux;
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xcr0 = i386_linux_core_read_xcr0 (gdbarch, target, abfd);
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if ((xcr0 & I386_XSTATE_AVX_MASK) == I386_XSTATE_AVX_MASK)
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return tdesc_i386_avx_linux;
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else
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return tdesc_i386_linux;
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}
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static void
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@ -623,6 +671,8 @@ i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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tdep->sc_reg_offset = i386_linux_sc_reg_offset;
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tdep->sc_num_regs = ARRAY_SIZE (i386_linux_sc_reg_offset);
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tdep->xsave_xcr0_offset = I386_LINUX_XSAVE_XCR0_OFFSET;
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set_gdbarch_process_record (gdbarch, i386_process_record);
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set_gdbarch_process_record_signal (gdbarch, i386_linux_record_signal);
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@ -840,4 +890,5 @@ _initialize_i386_linux_tdep (void)
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/* Initialize the Linux target description */
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initialize_tdesc_i386_linux ();
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initialize_tdesc_i386_avx_linux ();
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}
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