/* Target-dependent code for FreeBSD/arm.
- Copyright (C) 2017-2018 Free Software Foundation, Inc.
+ Copyright (C) 2017-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "elf/common.h"
+#include "target-descriptions.h"
+#include "aarch32-tdep.h"
#include "arm-tdep.h"
#include "arm-fbsd-tdep.h"
#include "auxv.h"
#include "trad-frame.h"
#include "tramp-frame.h"
+/* Register maps. */
+
+static const struct regcache_map_entry arm_fbsd_gregmap[] =
+ {
+ { 13, ARM_A1_REGNUM, 4 }, /* r0 ... r12 */
+ { 1, ARM_SP_REGNUM, 4 },
+ { 1, ARM_LR_REGNUM, 4 },
+ { 1, ARM_PC_REGNUM, 4 },
+ { 1, ARM_PS_REGNUM, 4 },
+ { 0 }
+ };
+
+static const struct regcache_map_entry arm_fbsd_vfpregmap[] =
+ {
+ { 32, ARM_D0_REGNUM, 8 }, /* d0 ... d31 */
+ { 1, ARM_FPSCR_REGNUM, 4 },
+ { 0 }
+ };
+
/* In a signal frame, sp points to a 'struct sigframe' which is
defined as:
the sigframe, otherwise it is NULL. There is no non-VFP floating
point register state saved in the signal frame. */
-#define ARM_MCONTEXT_REG_SIZE 4
-#define ARM_MCONTEXT_VFP_REG_SIZE 8
#define ARM_SIGFRAME_UCONTEXT_OFFSET 64
#define ARM_UCONTEXT_MCONTEXT_OFFSET 16
#define ARM_MCONTEXT_VFP_PTR_OFFSET 72
+ ARM_UCONTEXT_MCONTEXT_OFFSET);
ULONGEST mcontext_vfp_addr;
- for (int i = 0; i < 16; i++)
- {
- trad_frame_set_reg_addr (this_cache,
- ARM_A1_REGNUM + i,
- mcontext_addr + i * ARM_MCONTEXT_REG_SIZE);
- }
- trad_frame_set_reg_addr (this_cache, ARM_PS_REGNUM,
- mcontext_addr + 16 * ARM_MCONTEXT_REG_SIZE);
+ trad_frame_set_reg_regmap (this_cache, arm_fbsd_gregmap, mcontext_addr,
+ regcache_map_entry_size (arm_fbsd_gregmap));
if (safe_read_memory_unsigned_integer (mcontext_addr
+ ARM_MCONTEXT_VFP_PTR_OFFSET, 4,
byte_order,
&mcontext_vfp_addr)
&& mcontext_vfp_addr != 0)
- {
- for (int i = 0; i < 32; i++)
- {
- trad_frame_set_reg_addr (this_cache, ARM_D0_REGNUM + i,
- mcontext_vfp_addr
- + i * ARM_MCONTEXT_VFP_REG_SIZE);
- }
- trad_frame_set_reg_addr (this_cache, ARM_FPSCR_REGNUM,
- mcontext_vfp_addr
- + 32 * ARM_MCONTEXT_VFP_REG_SIZE);
- }
+ trad_frame_set_reg_regmap (this_cache, arm_fbsd_vfpregmap, mcontext_vfp_addr,
+ regcache_map_entry_size (arm_fbsd_vfpregmap));
trad_frame_set_id (this_cache, frame_id_build (sp, func));
}
SIGTRAMP_FRAME,
4,
{
- {0xe1a0000d, -1}, /* mov r0, sp */
- {0xe2800040, -1}, /* add r0, r0, #SIGF_UC */
- {0xe59f700c, -1}, /* ldr r7, [pc, #12] */
- {0xef0001a1, -1}, /* swi SYS_sigreturn */
- {TRAMP_SENTINEL_INSN, -1}
+ {0xe1a0000d, ULONGEST_MAX}, /* mov r0, sp */
+ {0xe2800040, ULONGEST_MAX}, /* add r0, r0, #SIGF_UC */
+ {0xe59f700c, ULONGEST_MAX}, /* ldr r7, [pc, #12] */
+ {0xef0001a1, ULONGEST_MAX}, /* swi SYS_sigreturn */
+ {TRAMP_SENTINEL_INSN, ULONGEST_MAX}
},
arm_fbsd_sigframe_init
};
-/* Register maps. */
-
-static const struct regcache_map_entry arm_fbsd_gregmap[] =
- {
- { 13, ARM_A1_REGNUM, 4 }, /* r0 ... r12 */
- { 1, ARM_SP_REGNUM, 4 },
- { 1, ARM_LR_REGNUM, 4 },
- { 1, ARM_PC_REGNUM, 4 },
- { 1, ARM_PS_REGNUM, 4 },
- { 0 }
- };
-
-static const struct regcache_map_entry arm_fbsd_vfpregmap[] =
- {
- { 32, ARM_D0_REGNUM, 8 }, /* d0 ... d31 */
- { 1, ARM_FPSCR_REGNUM, 4 },
- { 0 }
- };
-
/* Register set definitions. */
const struct regset arm_fbsd_gregset =
regcache_supply_regset, regcache_collect_regset
};
-/* Implement the "regset_from_core_section" gdbarch method. */
+/* Implement the "iterate_over_regset_sections" gdbarch method. */
static void
arm_fbsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- cb (".reg", ARM_FBSD_SIZEOF_GREGSET, &arm_fbsd_gregset, NULL, cb_data);
+ cb (".reg", ARM_FBSD_SIZEOF_GREGSET, ARM_FBSD_SIZEOF_GREGSET,
+ &arm_fbsd_gregset, NULL, cb_data);
/* While FreeBSD/arm cores do contain a NT_FPREGSET / ".reg2"
register set, it is not populated with register values by the
kernel but just contains all zeroes. */
if (tdep->vfp_register_count > 0)
- cb (".reg-arm-vfp", ARM_FBSD_SIZEOF_VFPREGSET, &arm_fbsd_vfpregset,
- "VFP floating-point", cb_data);
+ cb (".reg-arm-vfp", ARM_FBSD_SIZEOF_VFPREGSET, ARM_FBSD_SIZEOF_VFPREGSET,
+ &arm_fbsd_vfpregset, "VFP floating-point", cb_data);
}
/* Lookup a target description from a target's AT_HWCAP auxiliary
CORE_ADDR arm_hwcap = 0;
if (target_auxv_search (target, AT_FREEBSD_HWCAP, &arm_hwcap) != 1)
- return NULL;
+ return nullptr;
if (arm_hwcap & HWCAP_VFP)
{
if (arm_hwcap & HWCAP_NEON)
- return tdesc_arm_with_neon;
+ return aarch32_read_description ();
else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPD32))
== (HWCAP_VFPv3 | HWCAP_VFPD32))
- return tdesc_arm_with_vfpv3;
+ return arm_read_description (ARM_FP_TYPE_VFPV3);
else
- return tdesc_arm_with_vfpv2;
+ return arm_read_description (ARM_FP_TYPE_VFPV2);
}
- return NULL;
+ return nullptr;
}
/* Implement the "core_read_description" gdbarch method. */
set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
}
+void _initialize_arm_fbsd_tdep ();
void
-_initialize_arm_fbsd_tdep (void)
+_initialize_arm_fbsd_tdep ()
{
gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_FREEBSD,
arm_fbsd_init_abi);
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