/* Target-dependent code for GNU/Linux on Alpha.
- Copyright (C) 2002-2014 Free Software Foundation, Inc.
+ Copyright (C) 2002-2021 Free Software Foundation, Inc.
This file is part of GDB.
#include "regcache.h"
#include "linux-tdep.h"
#include "alpha-tdep.h"
+#include "gdbarch.h"
/* This enum represents the signals' numbers on the Alpha
architecture. It just contains the signal definitions which are
This is somewhat complicated in that:
(1) the expansion of the "mov" assembler macro has changed over
- time, from "bis src,src,dst" to "bis zero,src,dst",
+ time, from "bis src,src,dst" to "bis zero,src,dst",
(2) the kernel has changed from using "addq" to "lda" to load the
- syscall number,
+ syscall number,
(3) there is a "normal" sigreturn and an "rt" sigreturn which
- has a different stack layout. */
+ has a different stack layout. */
static long
alpha_linux_sigtramp_offset_1 (struct gdbarch *gdbarch, CORE_ADDR pc)
struct rt_sigframe {
struct siginfo info;
struct ucontext uc;
- };
+ };
offsetof (struct rt_sigframe, uc.uc_mcontext); */
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
- const gdb_byte *regs = gregs;
- int i;
+ const gdb_byte *regs = (const gdb_byte *) gregs;
+
gdb_assert (len >= 32 * 8);
+ alpha_supply_int_regs (regcache, regnum, regs, regs + 31 * 8,
+ len >= 33 * 8 ? regs + 32 * 8 : NULL);
+}
- for (i = 0; i < ALPHA_ZERO_REGNUM; i++)
- {
- if (regnum == i || regnum == -1)
- regcache_raw_supply (regcache, i, regs + i * 8);
- }
+/* Collect register REGNUM from the register cache REGCACHE and store
+ it in the buffer specified by GREGS and LEN as described by the
+ general-purpose register set REGSET. If REGNUM is -1, do this for
+ all registers in REGSET. */
- if (regnum == ALPHA_PC_REGNUM || regnum == -1)
- regcache_raw_supply (regcache, ALPHA_PC_REGNUM, regs + 31 * 8);
+static void
+alpha_linux_collect_gregset (const struct regset *regset,
+ const struct regcache *regcache,
+ int regnum, void *gregs, size_t len)
+{
+ gdb_byte *regs = (gdb_byte *) gregs;
- if (regnum == ALPHA_UNIQUE_REGNUM || regnum == -1)
- regcache_raw_supply (regcache, ALPHA_UNIQUE_REGNUM,
- len >= 33 * 8 ? regs + 32 * 8 : NULL);
+ gdb_assert (len >= 32 * 8);
+ alpha_fill_int_regs (regcache, regnum, regs, regs + 31 * 8,
+ len >= 33 * 8 ? regs + 32 * 8 : NULL);
}
/* Supply register REGNUM from the buffer specified by FPREGS and LEN
struct regcache *regcache,
int regnum, const void *fpregs, size_t len)
{
- const gdb_byte *regs = fpregs;
- int i;
+ const gdb_byte *regs = (const gdb_byte *) fpregs;
+
gdb_assert (len >= 32 * 8);
+ alpha_supply_fp_regs (regcache, regnum, regs, regs + 31 * 8);
+}
- for (i = ALPHA_FP0_REGNUM; i < ALPHA_FP0_REGNUM + 31; i++)
- {
- if (regnum == i || regnum == -1)
- regcache_raw_supply (regcache, i, regs + (i - ALPHA_FP0_REGNUM) * 8);
- }
+/* Collect register REGNUM from the register cache REGCACHE and store
+ it in the buffer specified by FPREGS and LEN as described by the
+ general-purpose register set REGSET. If REGNUM is -1, do this for
+ all registers in REGSET. */
+
+static void
+alpha_linux_collect_fpregset (const struct regset *regset,
+ const struct regcache *regcache,
+ int regnum, void *fpregs, size_t len)
+{
+ gdb_byte *regs = (gdb_byte *) fpregs;
- if (regnum == ALPHA_FPCR_REGNUM || regnum == -1)
- regcache_raw_supply (regcache, ALPHA_FPCR_REGNUM, regs + 31 * 8);
+ gdb_assert (len >= 32 * 8);
+ alpha_fill_fp_regs (regcache, regnum, regs, regs + 31 * 8);
}
static const struct regset alpha_linux_gregset =
{
NULL,
- alpha_linux_supply_gregset
+ alpha_linux_supply_gregset, alpha_linux_collect_gregset
};
static const struct regset alpha_linux_fpregset =
{
NULL,
- alpha_linux_supply_fpregset
+ alpha_linux_supply_fpregset, alpha_linux_collect_fpregset
};
-/* Return the appropriate register set for the core section identified
- by SECT_NAME and SECT_SIZE. */
+/* Iterate over core file register note sections. */
-static const struct regset *
-alpha_linux_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
+static void
+alpha_linux_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
{
- if (strcmp (sect_name, ".reg") == 0 && sect_size >= 32 * 8)
- return &alpha_linux_gregset;
-
- if (strcmp (sect_name, ".reg2") == 0 && sect_size >= 32 * 8)
- return &alpha_linux_fpregset;
-
- return NULL;
+ cb (".reg", 32 * 8, 32 * 8, &alpha_linux_gregset, NULL, cb_data);
+ cb (".reg2", 32 * 8, 32 * 8, &alpha_linux_fpregset, NULL, cb_data);
}
/* Implementation of `gdbarch_gdb_signal_from_target', as defined in
{
struct gdbarch_tdep *tdep;
- linux_init_abi (info, gdbarch);
+ linux_init_abi (info, gdbarch, 0);
/* Hook into the DWARF CFI frame unwinder. */
alpha_dwarf2_init_abi (info, gdbarch);
/* Enable TLS support. */
set_gdbarch_fetch_tls_load_module_address (gdbarch,
- svr4_fetch_objfile_link_map);
+ svr4_fetch_objfile_link_map);
- set_gdbarch_regset_from_core_section
- (gdbarch, alpha_linux_regset_from_core_section);
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, alpha_linux_iterate_over_regset_sections);
set_gdbarch_gdb_signal_from_target (gdbarch,
alpha_linux_gdb_signal_from_target);
alpha_linux_gdb_signal_to_target);
}
-/* Provide a prototype to silence -Wmissing-prototypes. */
-extern initialize_file_ftype _initialize_alpha_linux_tdep;
-
+void _initialize_alpha_linux_tdep ();
void
-_initialize_alpha_linux_tdep (void)
+_initialize_alpha_linux_tdep ()
{
gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_LINUX,
- alpha_linux_init_abi);
+ alpha_linux_init_abi);
}
projects / deliverable / binutils-gdb.git / blobdiff