/* Target-dependent code for FreeBSD/i386.
- Copyright (C) 2003-2016 Free Software Foundation, Inc.
+ Copyright (C) 2003-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "regcache.h"
#include "regset.h"
#include "i386-fbsd-tdep.h"
-#include "x86-xstate.h"
+#include "gdbsupport/x86-xstate.h"
#include "i386-tdep.h"
#include "i387-tdep.h"
-#include "bsd-uthread.h"
#include "fbsd-tdep.h"
#include "solib-svr4.h"
+#include "inferior.h"
/* Support for signal handlers. */
8 + 16 * 4 /* %gs */
};
-/* From /usr/src/lib/libc/i386/gen/_setjmp.S. */
-static int i386fbsd_jmp_buf_reg_offset[] =
-{
- -1, /* %eax */
- -1, /* %ecx */
- -1, /* %edx */
- 1 * 4, /* %ebx */
- 2 * 4, /* %esp */
- 3 * 4, /* %ebp */
- 4 * 4, /* %esi */
- 5 * 4, /* %edi */
- 0 * 4 /* %eip */
-};
-
/* Get XSAVE extended state xcr0 from core dump. */
uint64_t
if (xstate)
{
- size_t size = bfd_section_size (abfd, xstate);
+ size_t size = bfd_section_size (xstate);
/* Check extended state size. */
if (size < X86_XSTATE_AVX_SIZE)
{
warning (_("Couldn't read `xcr0' bytes from "
"`.reg-xstate' section in core file."));
- return 0;
+ return X86_XSTATE_SSE_MASK;
}
xcr0 = bfd_get_64 (abfd, contents);
}
}
else
- xcr0 = 0;
+ xcr0 = X86_XSTATE_SSE_MASK;
return xcr0;
}
struct target_ops *target,
bfd *abfd)
{
- return i386_target_description (i386fbsd_core_read_xcr0 (abfd));
+ return i386_target_description (i386fbsd_core_read_xcr0 (abfd), true);
}
/* Similar to i386_supply_fpregset, but use XSAVE extended state. */
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- cb (".reg", tdep->sizeof_gregset, &i386_gregset, NULL, cb_data);
- cb (".reg2", tdep->sizeof_fpregset, &i386_fpregset, NULL, cb_data);
+ cb (".reg", tdep->sizeof_gregset, tdep->sizeof_gregset, &i386_gregset, NULL,
+ cb_data);
+ cb (".reg2", tdep->sizeof_fpregset, tdep->sizeof_fpregset, &i386_fpregset,
+ NULL, cb_data);
if (tdep->xcr0 & X86_XSTATE_AVX)
- cb (".reg-xstate", X86_XSTATE_SIZE(tdep->xcr0),
- &i386fbsd_xstateregset, "XSAVE extended state", cb_data);
+ cb (".reg-xstate", X86_XSTATE_SIZE (tdep->xcr0),
+ X86_XSTATE_SIZE (tdep->xcr0), &i386fbsd_xstateregset,
+ "XSAVE extended state", cb_data);
}
-static void
-i386fbsd_supply_uthread (struct regcache *regcache,
- int regnum, CORE_ADDR addr)
+/* Implement the get_thread_local_address gdbarch method. */
+
+static CORE_ADDR
+i386fbsd_get_thread_local_address (struct gdbarch *gdbarch, ptid_t ptid,
+ CORE_ADDR lm_addr, CORE_ADDR offset)
{
- gdb_byte buf[4];
- int i;
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ struct regcache *regcache;
- gdb_assert (regnum >= -1);
+ if (tdep->fsbase_regnum == -1)
+ error (_("Unable to fetch %%gsbase"));
- for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++)
- {
- if (i386fbsd_jmp_buf_reg_offset[i] != -1
- && (regnum == -1 || regnum == i))
- {
- read_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4);
- regcache_raw_supply (regcache, i, buf);
- }
- }
-}
+ regcache = get_thread_arch_regcache (current_inferior ()->process_target (),
+ ptid, gdbarch);
-static void
-i386fbsd_collect_uthread (const struct regcache *regcache,
- int regnum, CORE_ADDR addr)
-{
- gdb_byte buf[4];
- int i;
+ target_fetch_registers (regcache, tdep->fsbase_regnum + 1);
- gdb_assert (regnum >= -1);
+ ULONGEST gsbase;
+ if (regcache->cooked_read (tdep->fsbase_regnum + 1, &gsbase) != REG_VALID)
+ error (_("Unable to fetch %%gsbase"));
- for (i = 0; i < ARRAY_SIZE (i386fbsd_jmp_buf_reg_offset); i++)
- {
- if (i386fbsd_jmp_buf_reg_offset[i] != -1
- && (regnum == -1 || regnum == i))
- {
- regcache_raw_collect (regcache, i, buf);
- write_memory (addr + i386fbsd_jmp_buf_reg_offset[i], buf, 4);
- }
- }
+ CORE_ADDR dtv_addr = gsbase + gdbarch_ptr_bit (gdbarch) / 8;
+ return fbsd_get_thread_local_address (gdbarch, dtv_addr, lm_addr, offset);
}
static void
-i386fbsdaout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
tdep->sc_reg_offset = i386fbsd_sc_reg_offset;
tdep->sc_num_regs = ARRAY_SIZE (i386fbsd_sc_reg_offset);
- /* FreeBSD provides a user-level threads implementation. */
- bsd_uthread_set_supply_uthread (gdbarch, i386fbsd_supply_uthread);
- bsd_uthread_set_collect_uthread (gdbarch, i386fbsd_collect_uthread);
-}
-
-static void
-i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
-{
- /* It's almost identical to FreeBSD a.out. */
- i386fbsdaout_init_abi (info, gdbarch);
-
- /* Except that it uses ELF. */
i386_elf_init_abi (info, gdbarch);
- /* FreeBSD ELF uses SVR4-style shared libraries. */
+ /* FreeBSD uses SVR4-style shared libraries. */
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
}
set_gdbarch_core_read_description (gdbarch,
i386fbsd_core_read_description);
-}
-\f
-/* Provide a prototype to silence -Wmissing-prototypes. */
-void _initialize_i386fbsd_tdep (void);
+ set_gdbarch_fetch_tls_load_module_address (gdbarch,
+ svr4_fetch_objfile_link_map);
+ set_gdbarch_get_thread_local_address (gdbarch,
+ i386fbsd_get_thread_local_address);
+}
void
_initialize_i386fbsd_tdep (void)
{
- gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_AOUT,
- i386fbsdaout_init_abi);
- gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD_ELF,
+ gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_FREEBSD,
i386fbsd4_init_abi);
}
projects / deliverable / binutils-gdb.git / blobdiff