* arm-linux-tdep.c: Include "auxv.h".
(AT_HWCAP): Define. (ARM_LINUX_SIZEOF_VFP): Define. (arm_linux_supply_vfp): New function. (arm_linux_collect_vfp): Likewise. (arm_linux_regset_from_core_section): Handle .reg-arm-vfp sections. (arm_linux_fpa_regset_sections): New variable. (arm_linux_vfp_regset_sections): Likewise. (arm_linux_core_read_description): New function. (arm_linux_init_abi): Install arm_linux_core_read_description and arm_linux_fpa_regset_sections or arm_linux_vfp_regset_sections as appropriate for the architecture. * arm-tdep.h (struct gdbarch_tdep): Add member "vfpregset". (tdesc_arm_with_m): Declare. (tdesc_arm_with_iwmmxt): Likewise. (tdesc_arm_with_vfpv2): Likewise. (tdesc_arm_with_vfpv3): Likewise. (tdesc_arm_with_neon): Likewise. * arm-linux-nat.c: Move features/*.c includes ... * arm-tdep.c: ... here. * arm-linux-nat.c (arm_linux_read_description): Move initializing target description data structures ... * arm-tdep.c (_initialize_arm_tdep): ... here. * arm-linux-nat.c (HWCAP_VFP, HWCAP_IWMMXT, HWCAP_NEON, HWCAP_VFPv3, HWCAP_VFPv3D16): Move definitions ... * arm-linux-tdep.h: ... here.
This commit is contained in:
Ulrich Weigand
parent
faa9a424ea
commit
ef7e8358ec
@ -1,3 +1,32 @@
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2011-06-15 Ulrich Weigand <ulrich.weigand@linaro.org>
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* arm-linux-tdep.c: Include "auxv.h".
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(AT_HWCAP): Define.
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(ARM_LINUX_SIZEOF_VFP): Define.
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(arm_linux_supply_vfp): New function.
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(arm_linux_collect_vfp): Likewise.
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(arm_linux_regset_from_core_section): Handle .reg-arm-vfp sections.
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(arm_linux_fpa_regset_sections): New variable.
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(arm_linux_vfp_regset_sections): Likewise.
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(arm_linux_core_read_description): New function.
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(arm_linux_init_abi): Install arm_linux_core_read_description and
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arm_linux_fpa_regset_sections or arm_linux_vfp_regset_sections as
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appropriate for the architecture.
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* arm-tdep.h (struct gdbarch_tdep): Add member "vfpregset".
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(tdesc_arm_with_m): Declare.
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(tdesc_arm_with_iwmmxt): Likewise.
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(tdesc_arm_with_vfpv2): Likewise.
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(tdesc_arm_with_vfpv3): Likewise.
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(tdesc_arm_with_neon): Likewise.
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* arm-linux-nat.c: Move features/*.c includes ...
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* arm-tdep.c: ... here.
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* arm-linux-nat.c (arm_linux_read_description): Move initializing
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target description data structures ...
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* arm-tdep.c (_initialize_arm_tdep): ... here.
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* arm-linux-nat.c (HWCAP_VFP, HWCAP_IWMMXT, HWCAP_NEON, HWCAP_VFPv3,
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HWCAP_VFPv3D16): Move definitions ...
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* arm-linux-tdep.h: ... here.
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2011-06-15 Hui Zhu <teawater@gmail.com>
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* remote.c (remote_trace_set_readonly_regions): Add a check for
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@ -44,11 +44,6 @@
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/* Defines ps_err_e, struct ps_prochandle. */
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#include "gdb_proc_service.h"
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#include "features/arm-with-iwmmxt.c"
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#include "features/arm-with-vfpv2.c"
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#include "features/arm-with-vfpv3.c"
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#include "features/arm-with-neon.c"
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#ifndef PTRACE_GET_THREAD_AREA
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#define PTRACE_GET_THREAD_AREA 22
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#endif
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@ -68,13 +63,6 @@
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#define PTRACE_SETHBPREGS 30
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#endif
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/* These are in <asm/elf.h> in current kernels. */
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#define HWCAP_VFP 64
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#define HWCAP_IWMMXT 512
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#define HWCAP_NEON 4096
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#define HWCAP_VFPv3 8192
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#define HWCAP_VFPv3D16 16384
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/* A flag for whether the WMMX registers are available. */
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static int arm_linux_has_wmmx_registers;
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@ -696,8 +684,6 @@ arm_linux_read_description (struct target_ops *ops)
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if (arm_hwcap & HWCAP_IWMMXT)
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{
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arm_linux_has_wmmx_registers = 1;
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if (tdesc_arm_with_iwmmxt == NULL)
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initialize_tdesc_arm_with_iwmmxt ();
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return tdesc_arm_with_iwmmxt;
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}
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@ -712,22 +698,16 @@ arm_linux_read_description (struct target_ops *ops)
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if (arm_hwcap & HWCAP_NEON)
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{
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arm_linux_vfp_register_count = 32;
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if (tdesc_arm_with_neon == NULL)
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initialize_tdesc_arm_with_neon ();
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result = tdesc_arm_with_neon;
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}
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else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPv3D16)) == HWCAP_VFPv3)
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{
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arm_linux_vfp_register_count = 32;
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if (tdesc_arm_with_vfpv3 == NULL)
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initialize_tdesc_arm_with_vfpv3 ();
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result = tdesc_arm_with_vfpv3;
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}
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else
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{
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arm_linux_vfp_register_count = 16;
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if (tdesc_arm_with_vfpv2 == NULL)
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initialize_tdesc_arm_with_vfpv2 ();
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result = tdesc_arm_with_vfpv2;
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}
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@ -33,6 +33,7 @@
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#include "trad-frame.h"
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#include "tramp-frame.h"
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#include "breakpoint.h"
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#include "auxv.h"
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#include "arm-tdep.h"
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#include "arm-linux-tdep.h"
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@ -45,6 +46,9 @@
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#include "gdb_string.h"
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/* This is defined in <elf.h> on ARM GNU/Linux systems. */
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#define AT_HWCAP 16
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extern int arm_apcs_32;
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/* Under ARM GNU/Linux the traditional way of performing a breakpoint
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@ -638,6 +642,44 @@ arm_linux_collect_nwfpe (const struct regset *regset,
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regs + INT_REGISTER_SIZE * ARM_FPS_REGNUM);
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}
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/* Support VFP register format. */
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#define ARM_LINUX_SIZEOF_VFP (32 * 8 + 4)
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static void
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arm_linux_supply_vfp (const struct regset *regset,
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struct regcache *regcache,
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int regnum, const void *regs_buf, size_t len)
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{
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const gdb_byte *regs = regs_buf;
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int regno;
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if (regnum == ARM_FPSCR_REGNUM || regnum == -1)
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regcache_raw_supply (regcache, ARM_FPSCR_REGNUM, regs + 32 * 8);
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for (regno = ARM_D0_REGNUM; regno <= ARM_D31_REGNUM; regno++)
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if (regnum == -1 || regnum == regno)
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regcache_raw_supply (regcache, regno,
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regs + (regno - ARM_D0_REGNUM) * 8);
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}
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static void
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arm_linux_collect_vfp (const struct regset *regset,
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const struct regcache *regcache,
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int regnum, void *regs_buf, size_t len)
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{
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gdb_byte *regs = regs_buf;
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int regno;
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if (regnum == ARM_FPSCR_REGNUM || regnum == -1)
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regcache_raw_collect (regcache, ARM_FPSCR_REGNUM, regs + 32 * 8);
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for (regno = ARM_D0_REGNUM; regno <= ARM_D31_REGNUM; regno++)
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if (regnum == -1 || regnum == regno)
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regcache_raw_collect (regcache, regno,
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regs + (regno - ARM_D0_REGNUM) * 8);
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}
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/* Return the appropriate register set for the core section identified
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by SECT_NAME and SECT_SIZE. */
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@ -665,9 +707,62 @@ arm_linux_regset_from_core_section (struct gdbarch *gdbarch,
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return tdep->fpregset;
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}
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if (strcmp (sect_name, ".reg-arm-vfp") == 0
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&& sect_size == ARM_LINUX_SIZEOF_VFP)
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{
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if (tdep->vfpregset == NULL)
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tdep->vfpregset = regset_alloc (gdbarch, arm_linux_supply_vfp,
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arm_linux_collect_vfp);
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return tdep->vfpregset;
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}
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return NULL;
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}
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/* Core file register set sections. */
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static struct core_regset_section arm_linux_fpa_regset_sections[] =
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{
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{ ".reg", ARM_LINUX_SIZEOF_GREGSET, "general-purpose" },
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{ ".reg2", ARM_LINUX_SIZEOF_NWFPE, "FPA floating-point" },
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{ NULL, 0}
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};
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static struct core_regset_section arm_linux_vfp_regset_sections[] =
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{
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{ ".reg", ARM_LINUX_SIZEOF_GREGSET, "general-purpose" },
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{ ".reg-arm-vfp", ARM_LINUX_SIZEOF_VFP, "VFP floating-point" },
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{ NULL, 0}
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};
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/* Determine target description from core file. */
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static const struct target_desc *
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arm_linux_core_read_description (struct gdbarch *gdbarch,
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struct target_ops *target,
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bfd *abfd)
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{
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CORE_ADDR arm_hwcap = 0;
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if (target_auxv_search (target, AT_HWCAP, &arm_hwcap) != 1)
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return NULL;
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if (arm_hwcap & HWCAP_VFP)
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{
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/* NEON implies VFPv3-D32 or no-VFP unit. Say that we only support
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Neon with VFPv3-D32. */
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if (arm_hwcap & HWCAP_NEON)
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return tdesc_arm_with_neon;
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else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPv3D16)) == HWCAP_VFPv3)
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return tdesc_arm_with_vfpv3;
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else
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return tdesc_arm_with_vfpv2;
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}
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return NULL;
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}
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/* Copy the value of next pc of sigreturn and rt_sigrturn into PC,
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return 1. In addition, set IS_THUMB depending on whether we
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will return to ARM or Thumb code. Return 0 if it is not a
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@ -1036,6 +1131,12 @@ arm_linux_init_abi (struct gdbarch_info info,
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/* Core file support. */
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set_gdbarch_regset_from_core_section (gdbarch,
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arm_linux_regset_from_core_section);
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set_gdbarch_core_read_description (gdbarch, arm_linux_core_read_description);
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if (tdep->have_vfp_registers)
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set_gdbarch_core_regset_sections (gdbarch, arm_linux_vfp_regset_sections);
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else if (tdep->have_fpa_registers)
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set_gdbarch_core_regset_sections (gdbarch, arm_linux_fpa_regset_sections);
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set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
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@ -59,3 +59,12 @@ void arm_linux_supply_nwfpe (const struct regset *regset,
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void arm_linux_collect_nwfpe (const struct regset *regset,
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const struct regcache *regcache,
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int regnum, void *regs_buf, size_t len);
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/* ARM GNU/Linux HWCAP values. These are in defined in
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<asm/elf.h> in current kernels. */
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#define HWCAP_VFP 64
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#define HWCAP_IWMMXT 512
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#define HWCAP_NEON 4096
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#define HWCAP_VFPv3 8192
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#define HWCAP_VFPv3D16 16384
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@ -56,6 +56,10 @@
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#include "vec.h"
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#include "features/arm-with-m.c"
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#include "features/arm-with-iwmmxt.c"
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#include "features/arm-with-vfpv2.c"
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#include "features/arm-with-vfpv3.c"
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#include "features/arm-with-neon.c"
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static int arm_debug;
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@ -8800,6 +8804,10 @@ _initialize_arm_tdep (void)
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/* Initialize the standard target descriptions. */
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initialize_tdesc_arm_with_m ();
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initialize_tdesc_arm_with_iwmmxt ();
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initialize_tdesc_arm_with_vfpv2 ();
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initialize_tdesc_arm_with_vfpv3 ();
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initialize_tdesc_arm_with_neon ();
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/* Get the number of possible sets of register names defined in opcodes. */
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num_disassembly_options = get_arm_regname_num_options ();
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@ -191,7 +191,7 @@ struct gdbarch_tdep
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enum struct_return struct_return;
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/* Cached core file helpers. */
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struct regset *gregset, *fpregset;
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struct regset *gregset, *fpregset, *vfpregset;
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/* ISA-specific data types. */
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struct type *arm_ext_type;
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@ -339,4 +339,11 @@ extern const struct regset *
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armbsd_regset_from_core_section (struct gdbarch *gdbarch,
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const char *sect_name, size_t sect_size);
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/* Target descriptions. */
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extern struct target_desc *tdesc_arm_with_m;
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extern struct target_desc *tdesc_arm_with_iwmmxt;
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extern struct target_desc *tdesc_arm_with_vfpv2;
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extern struct target_desc *tdesc_arm_with_vfpv3;
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extern struct target_desc *tdesc_arm_with_neon;
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#endif /* arm-tdep.h */
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