/* Target-dependent code for GNU/Linux on Tilera TILE-Gx processors.
- Copyright 2012 Free Software Foundation, Inc.
+ Copyright (C) 2012-2019 Free Software Foundation, Inc.
This file is part of GDB.
#include "tramp-frame.h"
#include "trad-frame.h"
#include "tilegx-tdep.h"
+#include "gdbarch.h"
/* Signal trampoline support. */
struct trad_frame_cache *this_cache,
CORE_ADDR func)
{
- CORE_ADDR pc = get_frame_register_unsigned (this_frame, 64);
CORE_ADDR sp = get_frame_register_unsigned (this_frame, 54);
- CORE_ADDR base = sp + 16;
+
+ /* Base address of register save area. */
+ CORE_ADDR base = sp
+ + 16 /* Skip ABI_SAVE_AREA. */
+ + 128 /* Skip SIGINFO. */
+ + 40; /* Skip UCONTEXT. */
+
+ /* Address of saved LR register (R56) which holds previous PC. */
+ CORE_ADDR prev_pc = base + 56 * 8;
+
int i;
for (i = 0; i < 56; i++)
trad_frame_set_reg_addr (this_cache, i, base + i * 8);
- trad_frame_set_reg_value (this_cache, 64, pc);
+ trad_frame_set_reg_value (this_cache, 64,
+ get_frame_memory_unsigned (this_frame, prev_pc, 8));
/* Save a frame ID. */
trad_frame_set_id (this_cache, frame_id_build (base, func));
SIGTRAMP_FRAME,
8,
{
- { 0x00045fe551483000ULL, -1 }, /* { moveli r10, 139 } */
- { 0x286b180051485000ULL, -1 }, /* { swint1 } */
- { TRAMP_SENTINEL_INSN, -1 }
+ { 0x00045fe551483000ULL, ULONGEST_MAX }, /* { moveli r10, 139 } */
+ { 0x286b180051485000ULL, ULONGEST_MAX }, /* { swint1 } */
+ { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
},
tilegx_linux_sigframe_init
};
-/* Supply raw registers from REGCACHE to REGS. */
+/* Register map; must match struct pt_regs in "ptrace.h". */
-static void
-tilegx_linux_supply_regset (const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *regs, size_t len)
-{
- struct gdbarch *arch = get_regcache_arch (regcache);
- const char *ptr = regs;
- int i;
+static const struct regcache_map_entry tilegx_linux_regmap[] =
+ {
+ { TILEGX_NUM_EASY_REGS, TILEGX_FIRST_EASY_REGNUM, 8 },
+ { 1, TILEGX_PC_REGNUM, 8 },
+ { 1, TILEGX_FAULTNUM_REGNUM, 8 },
+ { 0 }
+ };
- /* This logic must match that of struct pt_regs in "ptrace.h". */
- for (i = 0; i < TILEGX_NUM_EASY_REGS + 1; i++, ptr += tilegx_reg_size)
- {
- int gri = (i < TILEGX_NUM_EASY_REGS) ? i : TILEGX_PC_REGNUM;
-
- if (regnum == gri || regnum == -1)
- regcache_raw_supply (regcache, gri, ptr);
- }
-}
+#define TILEGX_LINUX_SIZEOF_GREGSET (64 * 8)
/* TILE-Gx Linux kernel register set. */
-static struct regset tilegx_linux_regset =
+
+static const struct regset tilegx_linux_regset =
{
- NULL,
- tilegx_linux_supply_regset
+ tilegx_linux_regmap,
+ regcache_supply_regset, regcache_collect_regset
};
-static const struct regset *
-tilegx_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name,
- size_t sect_size)
-{
- if (strcmp (sect_name, ".reg") == 0)
- return &tilegx_linux_regset;
- return NULL;
+static void
+tilegx_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
+{
+ cb (".reg", TILEGX_LINUX_SIZEOF_GREGSET, TILEGX_LINUX_SIZEOF_GREGSET,
+ &tilegx_linux_regset, NULL, cb_data);
}
/* OS specific initialization of gdbarch. */
tramp_frame_prepend_unwinder (gdbarch, &tilegx_linux_rt_sigframe);
- set_gdbarch_regset_from_core_section (gdbarch,
- tilegx_regset_from_core_section);
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, tilegx_iterate_over_regset_sections);
/* GNU/Linux uses SVR4-style shared libraries. */
if (arch_size == 32)
/* Shared library handling. */
set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
-
- set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
}
-/* Provide a prototype to silence -Wmissing-prototypes. */
-extern initialize_file_ftype _initialize_tilegx_linux_tdep;
-
void
_initialize_tilegx_linux_tdep (void)
{