/* Low level interface to ptrace, for the remote server for GDB.
- Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
- 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 1995-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "server.h"
#include "linux-low.h"
-#include <sys/ptrace.h>
+#include "nat/gdb_ptrace.h"
#include "gdb_proc_service.h"
#define SPARC_F_REGS_NUM 48
#define SPARC_CONTROL_REGS_NUM 6
-#define sparc_num_regs (SPARC_R_REGS_NUM + SPARC_F_REGS_NUM + SPARC_CONTROL_REGS_NUM)
+#define sparc_num_regs \
+ (SPARC_R_REGS_NUM + SPARC_F_REGS_NUM + SPARC_CONTROL_REGS_NUM)
/* Each offset is multiplied by 8, because of the register size.
These offsets apply to the buffer sent/filled by ptrace.
static int sparc_regmap[] = {
/* These offsets correspond to GET/SETREGSET. */
- -1, 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, /* g0 .. g7 */
- 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, /* o0 .. o5, sp, o7 */
- -1, -1, -1, -1, -1, -1, -1, -1, /* l0 .. l7 */
- -1, -1, -1, -1, -1, -1, -1, -1, /* i0 .. i5, fp, i7 */
+ -1, 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, /* g0 .. g7 */
+ 7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, /* o0 .. o5, sp, o7 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* l0 .. l7 */
+ -1, -1, -1, -1, -1, -1, -1, -1, /* i0 .. i5, fp, i7 */
/* Floating point registers offsets correspond to GET/SETFPREGSET. */
0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4, /* f0 .. f7 */
17 *8, /* pc */
18 *8, /* npc */
16 *8, /* state */
- /* FSR offset also corresponds to GET/SETFPREGSET, ans is placed next to f62. */
+ /* FSR offset also corresponds to GET/SETFPREGSET, ans is placed
+ next to f62. */
32 *8, /* fsr */
-1, /* fprs */
/* Y register is 32-bits length, but gdb takes care of that. */
/* Defined in auto-generated file reg-sparc64.c. */
void init_registers_sparc64 (void);
+extern const struct target_desc *tdesc_sparc64;
static int
sparc_cannot_store_register (int regno)
int i;
CORE_ADDR addr = 0;
unsigned char tmp_reg_buf[8];
- const int l0_regno = find_regno("l0");
+ const int l0_regno = find_regno (regcache->tdesc, "l0");
const int i7_regno = l0_regno + 15;
/* These registers have to be stored in the stack. */
- memcpy(&addr, ((char *) buf) + sparc_regmap[find_regno("sp")], sizeof(addr));
+ memcpy (&addr,
+ ((char *) buf) + sparc_regmap[find_regno (regcache->tdesc, "sp")],
+ sizeof (addr));
addr += BIAS;
for (i = l0_regno; i <= i7_regno; i++)
{
collect_register (regcache, i, tmp_reg_buf);
- (*the_target->write_memory) (addr, tmp_reg_buf, sizeof(tmp_reg_buf));
- addr += sizeof(tmp_reg_buf);
+ (*the_target->write_memory) (addr, tmp_reg_buf, sizeof (tmp_reg_buf));
+ addr += sizeof (tmp_reg_buf);
}
}
int range;
for (range = 0; range < N_GREGS_RANGES; range++)
- for (i = gregs_ranges[range].regno_start; i <= gregs_ranges[range].regno_end; i++)
+ for (i = gregs_ranges[range].regno_start;
+ i <= gregs_ranges[range].regno_end; i++)
if (sparc_regmap[i] != -1)
collect_register (regcache, i, ((char *) buf) + sparc_regmap[i]);
int range;
for (range = 0; range < N_FPREGS_RANGES; range++)
- for (i = fpregs_ranges[range].regno_start; i <= fpregs_ranges[range].regno_end; i++)
+ for (i = fpregs_ranges[range].regno_start;
+ i <= fpregs_ranges[range].regno_end; i++)
collect_register (regcache, i, ((char *) buf) + sparc_regmap[i]);
}
int i;
CORE_ADDR addr = 0;
unsigned char tmp_reg_buf[8];
- const int l0_regno = find_regno("l0");
+ const int l0_regno = find_regno (regcache->tdesc, "l0");
const int i7_regno = l0_regno + 15;
/* These registers have to be obtained from the stack. */
- memcpy(&addr, ((char *) buf) + sparc_regmap[find_regno("sp")], sizeof(addr));
+ memcpy (&addr,
+ ((char *) buf) + sparc_regmap[find_regno (regcache->tdesc, "sp")],
+ sizeof (addr));
addr += BIAS;
for (i = l0_regno; i <= i7_regno; i++)
{
- (*the_target->read_memory) (addr, tmp_reg_buf, sizeof(tmp_reg_buf));
+ (*the_target->read_memory) (addr, tmp_reg_buf, sizeof (tmp_reg_buf));
supply_register (regcache, i, tmp_reg_buf);
- addr += sizeof(tmp_reg_buf);
+ addr += sizeof (tmp_reg_buf);
}
}
char zerobuf[8];
int range;
- memset (zerobuf, 0, sizeof(zerobuf));
+ memset (zerobuf, 0, sizeof (zerobuf));
for (range = 0; range < N_GREGS_RANGES; range++)
- for (i = gregs_ranges[range].regno_start; i <= gregs_ranges[range].regno_end; i++)
+ for (i = gregs_ranges[range].regno_start;
+ i <= gregs_ranges[range].regno_end; i++)
if (sparc_regmap[i] != -1)
supply_register (regcache, i, ((char *) buf) + sparc_regmap[i]);
else
supply_register (regcache, i, ((char *) buf) + sparc_regmap[i]);
}
-extern int debug_threads;
+static const gdb_byte sparc_breakpoint[INSN_SIZE] = {
+ 0x91, 0xd0, 0x20, 0x01
+};
+#define sparc_breakpoint_len INSN_SIZE
-static CORE_ADDR
-sparc_get_pc (struct regcache *regcache)
+/* Implementation of linux_target_ops method "sw_breakpoint_from_kind". */
+
+static const unsigned char *
+sparc_sw_breakpoint_from_kind (int kind, int *size)
{
- unsigned long pc;
- collect_register_by_name (regcache, "pc", &pc);
- if (debug_threads)
- fprintf (stderr, "stop pc is %08lx\n", pc);
- return pc;
+ *size = sparc_breakpoint_len;
+ return sparc_breakpoint;
}
-static const unsigned char sparc_breakpoint[INSN_SIZE] = { 0x91, 0xd0, 0x20, 0x01 };
-#define sparc_breakpoint_len INSN_SIZE
-
-
static int
sparc_breakpoint_at (CORE_ADDR where)
{
unsigned char insn[INSN_SIZE];
- (*the_target->read_memory) (where, (unsigned char *) insn, sizeof(insn));
+ (*the_target->read_memory) (where, (unsigned char *) insn, sizeof (insn));
- if (memcmp(sparc_breakpoint, insn, sizeof(insn)) == 0)
+ if (memcmp (sparc_breakpoint, insn, sizeof (insn)) == 0)
return 1;
- /* If necessary, recognize more trap instructions here. GDB only uses TRAP Always. */
+ /* If necessary, recognize more trap instructions here. GDB only
+ uses TRAP Always. */
return 0;
}
-/* We only place breakpoints in empty marker functions, and thread locking
- is outside of the function. So rather than importing software single-step,
- we can just run until exit. */
-static CORE_ADDR
-sparc_reinsert_addr (void)
+static void
+sparc_arch_setup (void)
{
- struct regcache *regcache = get_thread_regcache (current_inferior, 1);
- CORE_ADDR lr;
- /* O7 is the equivalent to the 'lr' of other archs. */
- collect_register_by_name (regcache, "o7", &lr);
- return lr;
+ current_process ()->tdesc = tdesc_sparc64;
}
-
-struct regset_info target_regsets[] = {
- { PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
+static struct regset_info sparc_regsets[] = {
+ { PTRACE_GETREGS, PTRACE_SETREGS, 0, sizeof (elf_gregset_t),
GENERAL_REGS,
sparc_fill_gregset, sparc_store_gregset },
- { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (fpregset_t),
+ { PTRACE_GETFPREGS, PTRACE_SETFPREGS, 0, sizeof (fpregset_t),
FP_REGS,
sparc_fill_fpregset, sparc_store_fpregset },
- { 0, 0, -1, -1, NULL, NULL }
+ NULL_REGSET
};
+static struct regsets_info sparc_regsets_info =
+ {
+ sparc_regsets, /* regsets */
+ 0, /* num_regsets */
+ NULL, /* disabled_regsets */
+ };
+
+static struct usrregs_info sparc_usrregs_info =
+ {
+ sparc_num_regs,
+ /* No regmap needs to be provided since this impl. doesn't use
+ USRREGS. */
+ NULL
+ };
+
+static struct regs_info regs_info =
+ {
+ NULL, /* regset_bitmap */
+ &sparc_usrregs_info,
+ &sparc_regsets_info
+ };
+
+static const struct regs_info *
+sparc_regs_info (void)
+{
+ return ®s_info;
+}
+
struct linux_target_ops the_low_target = {
- init_registers_sparc64,
- sparc_num_regs,
- /* No regmap needs to be provided since this impl. doesn't use USRREGS. */
- NULL,
+ sparc_arch_setup,
+ sparc_regs_info,
sparc_cannot_fetch_register,
sparc_cannot_store_register,
- sparc_get_pc,
+ NULL, /* fetch_register */
+ linux_get_pc_64bit,
/* No sparc_set_pc is needed. */
NULL,
- (const unsigned char *) sparc_breakpoint,
- sparc_breakpoint_len,
- sparc_reinsert_addr,
+ NULL, /* breakpoint_kind_from_pc */
+ sparc_sw_breakpoint_from_kind,
+ NULL, /* get_next_pcs */
0,
sparc_breakpoint_at,
+ NULL, /* supports_z_point_type */
NULL, NULL, NULL, NULL,
NULL, NULL
};
+
+void
+initialize_low_arch (void)
+{
+ /* Initialize the Linux target descriptions. */
+ init_registers_sparc64 ();
+
+ initialize_regsets_info (&sparc_regsets_info);
+}
projects / deliverable / binutils-gdb.git / blobdiff