/* Target-dependent code for GNU/Linux running on the Fujitsu FR-V,
for GDB.
- Copyright (C) 2004-2013 Free Software Foundation, Inc.
+ Copyright (C) 2004-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "trad-frame.h"
#include "frame-unwind.h"
#include "regset.h"
-#include "gdb_string.h"
#include "linux-tdep.h"
+#include "gdbarch.h"
/* Define the size (in bytes) of an FR-V instruction. */
static const int frv_instr_size = 4;
const char *name)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
- char buf[frv_instr_size];
+ gdb_byte buf[frv_instr_size];
LONGEST instr;
int retval = 0;
else
{
CORE_ADDR pc, sp;
- char buf[4];
+ gdb_byte buf[4];
int tramp_type;
pc = get_frame_pc (this_frame);
void **this_cache)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
- struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct trad_frame_cache *cache;
CORE_ADDR addr;
- char buf[4];
+ gdb_byte buf[4];
int regnum;
CORE_ADDR sc_addr_cache_val = 0;
struct frame_id this_id;
if (*this_cache)
- return *this_cache;
+ return (struct trad_frame_cache *) *this_cache;
cache = trad_frame_cache_zalloc (this_frame);
frv_elf_fpreg_t fsr[1];
} frv_elf_fpregset_t;
-/* Constants for accessing elements of frv_elf_gregset_t. */
-
-#define FRV_PT_PSR 0
-#define FRV_PT_ISR 1
-#define FRV_PT_CCR 2
-#define FRV_PT_CCCR 3
-#define FRV_PT_LR 4
-#define FRV_PT_LCR 5
-#define FRV_PT_PC 6
-#define FRV_PT_GNER0 10
-#define FRV_PT_GNER1 11
-#define FRV_PT_IACC0H 12
-#define FRV_PT_IACC0L 13
-
-/* Note: Only 32 of the GRs will be found in the corefile. */
-#define FRV_PT_GR(j) ( 14 + (j)) /* GRj for 0<=j<=63. */
-
-#define FRV_PT_TBR FRV_PT_GR(0) /* gr0 is always 0, so TBR is stuffed
- there. */
-
-/* Technically, the loadmap addresses are not part of `pr_reg' as
- found in the elf_prstatus struct. The fields which communicate the
- loadmap address appear (by design) immediately after `pr_reg'
- though, and the BFD function elf32_frv_grok_prstatus() has been
- implemented to include these fields in the register section that it
- extracts from the core file. So, for our purposes, they may be
- viewed as registers. */
-
-#define FRV_PT_EXEC_FDPIC_LOADMAP 46
-#define FRV_PT_INTERP_FDPIC_LOADMAP 47
-
+/* Register maps. */
+
+static const struct regcache_map_entry frv_linux_gregmap[] =
+ {
+ { 1, psr_regnum, 4 },
+ { 1, REGCACHE_MAP_SKIP, 4 }, /* isr */
+ { 1, ccr_regnum, 4 },
+ { 1, cccr_regnum, 4 },
+ { 1, lr_regnum, 4 },
+ { 1, lcr_regnum, 4 },
+ { 1, pc_regnum, 4 },
+ { 1, REGCACHE_MAP_SKIP, 4 }, /* __status */
+ { 1, REGCACHE_MAP_SKIP, 4 }, /* syscallno */
+ { 1, REGCACHE_MAP_SKIP, 4 }, /* orig_gr8 */
+ { 1, gner0_regnum, 4 },
+ { 1, gner1_regnum, 4 },
+ { 1, REGCACHE_MAP_SKIP, 8 }, /* iacc0 */
+ { 1, tbr_regnum, 4 },
+ { 31, first_gpr_regnum + 1, 4 }, /* gr1 ... gr31 */
+
+ /* Technically, the loadmap addresses are not part of `pr_reg' as
+ found in the elf_prstatus struct. The fields which communicate
+ the loadmap address appear (by design) immediately after
+ `pr_reg' though, and the BFD function elf32_frv_grok_prstatus()
+ has been implemented to include these fields in the register
+ section that it extracts from the core file. So, for our
+ purposes, they may be viewed as registers. */
+
+ { 1, fdpic_loadmap_exec_regnum, 4 },
+ { 1, fdpic_loadmap_interp_regnum, 4 },
+ { 0 }
+ };
+
+static const struct regcache_map_entry frv_linux_fpregmap[] =
+ {
+ { 64, first_fpr_regnum, 4 }, /* fr0 ... fr63 */
+ { 1, fner0_regnum, 4 },
+ { 1, fner1_regnum, 4 },
+ { 1, msr0_regnum, 4 },
+ { 1, msr1_regnum, 4 },
+ { 8, acc0_regnum, 4 }, /* acc0 ... acc7 */
+ { 1, accg0123_regnum, 4 },
+ { 1, accg4567_regnum, 4 },
+ { 1, fsr0_regnum, 4 },
+ { 0 }
+ };
/* Unpack an frv_elf_gregset_t into GDB's register cache. */
int regnum, const void *gregs, size_t len)
{
int regi;
- char zerobuf[MAX_REGISTER_SIZE];
- const frv_elf_gregset_t *gregsetp = gregs;
-
- memset (zerobuf, 0, MAX_REGISTER_SIZE);
/* gr0 always contains 0. Also, the kernel passes the TBR value in
this slot. */
- regcache_raw_supply (regcache, first_gpr_regnum, zerobuf);
-
- for (regi = first_gpr_regnum + 1; regi <= last_gpr_regnum; regi++)
- {
- if (regi >= first_gpr_regnum + 32)
- regcache_raw_supply (regcache, regi, zerobuf);
- else
- regcache_raw_supply (regcache, regi,
- gregsetp->reg[FRV_PT_GR (regi
- - first_gpr_regnum)]);
- }
-
- regcache_raw_supply (regcache, pc_regnum, gregsetp->reg[FRV_PT_PC]);
- regcache_raw_supply (regcache, psr_regnum, gregsetp->reg[FRV_PT_PSR]);
- regcache_raw_supply (regcache, ccr_regnum, gregsetp->reg[FRV_PT_CCR]);
- regcache_raw_supply (regcache, cccr_regnum, gregsetp->reg[FRV_PT_CCCR]);
- regcache_raw_supply (regcache, lr_regnum, gregsetp->reg[FRV_PT_LR]);
- regcache_raw_supply (regcache, lcr_regnum, gregsetp->reg[FRV_PT_LCR]);
- regcache_raw_supply (regcache, gner0_regnum, gregsetp->reg[FRV_PT_GNER0]);
- regcache_raw_supply (regcache, gner1_regnum, gregsetp->reg[FRV_PT_GNER1]);
- regcache_raw_supply (regcache, tbr_regnum, gregsetp->reg[FRV_PT_TBR]);
- regcache_raw_supply (regcache, fdpic_loadmap_exec_regnum,
- gregsetp->reg[FRV_PT_EXEC_FDPIC_LOADMAP]);
- regcache_raw_supply (regcache, fdpic_loadmap_interp_regnum,
- gregsetp->reg[FRV_PT_INTERP_FDPIC_LOADMAP]);
-}
-
-/* Unpack an frv_elf_fpregset_t into GDB's register cache. */
+ regcache->raw_supply_zeroed (first_gpr_regnum);
-static void
-frv_linux_supply_fpregset (const struct regset *regset,
- struct regcache *regcache,
- int regnum, const void *gregs, size_t len)
-{
- int regi;
- const frv_elf_fpregset_t *fpregsetp = gregs;
-
- for (regi = first_fpr_regnum; regi <= last_fpr_regnum; regi++)
- regcache_raw_supply (regcache, regi,
- fpregsetp->fr[regi - first_fpr_regnum]);
-
- regcache_raw_supply (regcache, fner0_regnum, fpregsetp->fner[0]);
- regcache_raw_supply (regcache, fner1_regnum, fpregsetp->fner[1]);
-
- regcache_raw_supply (regcache, msr0_regnum, fpregsetp->msr[0]);
- regcache_raw_supply (regcache, msr1_regnum, fpregsetp->msr[1]);
-
- for (regi = acc0_regnum; regi <= acc7_regnum; regi++)
- regcache_raw_supply (regcache, regi, fpregsetp->acc[regi - acc0_regnum]);
+ /* Fill gr32, ..., gr63 with zeros. */
+ for (regi = first_gpr_regnum + 32; regi <= last_gpr_regnum; regi++)
+ regcache->raw_supply_zeroed (regi);
- regcache_raw_supply (regcache, accg0123_regnum, fpregsetp->accg);
- regcache_raw_supply (regcache, accg4567_regnum, fpregsetp->accg + 4);
-
- regcache_raw_supply (regcache, fsr0_regnum, fpregsetp->fsr[0]);
+ regcache_supply_regset (regset, regcache, regnum, gregs, len);
}
/* FRV Linux kernel register sets. */
-static struct regset frv_linux_gregset =
+static const struct regset frv_linux_gregset =
{
- NULL,
- frv_linux_supply_gregset
+ frv_linux_gregmap,
+ frv_linux_supply_gregset, regcache_collect_regset
};
-static struct regset frv_linux_fpregset =
+static const struct regset frv_linux_fpregset =
{
- NULL,
- frv_linux_supply_fpregset
+ frv_linux_fpregmap,
+ regcache_supply_regset, regcache_collect_regset
};
-static const struct regset *
-frv_linux_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
+static void
+frv_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 >= sizeof (frv_elf_gregset_t))
- return &frv_linux_gregset;
-
- if (strcmp (sect_name, ".reg2") == 0
- && sect_size >= sizeof (frv_elf_fpregset_t))
- return &frv_linux_fpregset;
-
- return NULL;
+ cb (".reg", sizeof (frv_elf_gregset_t), sizeof (frv_elf_gregset_t),
+ &frv_linux_gregset, NULL, cb_data);
+ cb (".reg2", sizeof (frv_elf_fpregset_t), sizeof (frv_elf_fpregset_t),
+ &frv_linux_fpregset, NULL, cb_data);
}
\f
/* Set the sigtramp frame sniffer. */
frame_unwind_append_unwinder (gdbarch, &frv_linux_sigtramp_frame_unwind);
- set_gdbarch_regset_from_core_section (gdbarch,
- frv_linux_regset_from_core_section);
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, frv_linux_iterate_over_regset_sections);
}
static enum gdb_osabi
return GDB_OSABI_UNKNOWN;
}
-/* Provide a prototype to silence -Wmissing-prototypes. */
-void _initialize_frv_linux_tdep (void);
-
+void _initialize_frv_linux_tdep ();
void
-_initialize_frv_linux_tdep (void)
+_initialize_frv_linux_tdep ()
{
gdbarch_register_osabi (bfd_arch_frv, 0, GDB_OSABI_LINUX,
frv_linux_init_abi);
projects / deliverable / binutils-gdb.git / blobdiff