/* GNU/Linux/PowerPC specific low level interface, for the remote server for
GDB.
- Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2005, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright (C) 1995-2013 Free Software Foundation, Inc.
This file is part of GDB.
#include <asm/ptrace.h>
/* These are in <asm/cputable.h> in current kernels. */
+#define PPC_FEATURE_HAS_VSX 0x00000080
#define PPC_FEATURE_HAS_ALTIVEC 0x10000000
#define PPC_FEATURE_HAS_SPE 0x00800000
+#define PPC_FEATURE_CELL 0x00010000
+#define PPC_FEATURE_HAS_DFP 0x00000400
static unsigned long ppc_hwcap;
void init_registers_powerpc_32l (void);
/* Defined in auto-generated file powerpc-altivec32l.c. */
void init_registers_powerpc_altivec32l (void);
+/* Defined in auto-generated file powerpc-cell32l.c. */
+void init_registers_powerpc_cell32l (void);
+/* Defined in auto-generated file powerpc-vsx32l.c. */
+void init_registers_powerpc_vsx32l (void);
+/* Defined in auto-generated file powerpc-isa205-32l.c. */
+void init_registers_powerpc_isa205_32l (void);
+/* Defined in auto-generated file powerpc-isa205-altivec32l.c. */
+void init_registers_powerpc_isa205_altivec32l (void);
+/* Defined in auto-generated file powerpc-isa205-vsx32l.c. */
+void init_registers_powerpc_isa205_vsx32l (void);
/* Defined in auto-generated file powerpc-e500l.c. */
void init_registers_powerpc_e500l (void);
/* Defined in auto-generated file powerpc-64l.c. */
void init_registers_powerpc_64l (void);
/* Defined in auto-generated file powerpc-altivec64l.c. */
void init_registers_powerpc_altivec64l (void);
+/* Defined in auto-generated file powerpc-cell64l.c. */
+void init_registers_powerpc_cell64l (void);
+/* Defined in auto-generated file powerpc-vsx64l.c. */
+void init_registers_powerpc_vsx64l (void);
+/* Defined in auto-generated file powerpc-isa205-64l.c. */
+void init_registers_powerpc_isa205_64l (void);
+/* Defined in auto-generated file powerpc-isa205-altivec64l.c. */
+void init_registers_powerpc_isa205_altivec64l (void);
+/* Defined in auto-generated file powerpc-isa205-vsx64l.c. */
+void init_registers_powerpc_isa205_vsx64l (void);
#define ppc_num_regs 73
}
static void
-ppc_collect_ptrace_register (int regno, char *buf)
+ppc_collect_ptrace_register (struct regcache *regcache, int regno, char *buf)
{
int size = register_size (regno);
+
+ memset (buf, 0, sizeof (long));
+
if (size < sizeof (long))
- collect_register (regno, buf + sizeof (long) - size);
+ collect_register (regcache, regno, buf + sizeof (long) - size);
else
- collect_register (regno, buf);
+ collect_register (regcache, regno, buf);
}
static void
-ppc_supply_ptrace_register (int regno, const char *buf)
+ppc_supply_ptrace_register (struct regcache *regcache,
+ int regno, const char *buf)
{
int size = register_size (regno);
if (size < sizeof (long))
- supply_register (regno, buf + sizeof (long) - size);
+ supply_register (regcache, regno, buf + sizeof (long) - size);
else
- supply_register (regno, buf);
+ supply_register (regcache, regno, buf);
}
-static CORE_ADDR
-ppc_get_pc (void)
+
+#define INSTR_SC 0x44000002
+#define NR_spu_run 0x0116
+
+/* If the PPU thread is currently stopped on a spu_run system call,
+ return to FD and ADDR the file handle and NPC parameter address
+ used with the system call. Return non-zero if successful. */
+static int
+parse_spufs_run (struct regcache *regcache, int *fd, CORE_ADDR *addr)
{
+ CORE_ADDR curr_pc;
+ int curr_insn;
+ int curr_r0;
+
if (register_size (0) == 4)
{
+ unsigned int pc, r0, r3, r4;
+ collect_register_by_name (regcache, "pc", &pc);
+ collect_register_by_name (regcache, "r0", &r0);
+ collect_register_by_name (regcache, "orig_r3", &r3);
+ collect_register_by_name (regcache, "r4", &r4);
+ curr_pc = (CORE_ADDR) pc;
+ curr_r0 = (int) r0;
+ *fd = (int) r3;
+ *addr = (CORE_ADDR) r4;
+ }
+ else
+ {
+ unsigned long pc, r0, r3, r4;
+ collect_register_by_name (regcache, "pc", &pc);
+ collect_register_by_name (regcache, "r0", &r0);
+ collect_register_by_name (regcache, "orig_r3", &r3);
+ collect_register_by_name (regcache, "r4", &r4);
+ curr_pc = (CORE_ADDR) pc;
+ curr_r0 = (int) r0;
+ *fd = (int) r3;
+ *addr = (CORE_ADDR) r4;
+ }
+
+ /* Fetch instruction preceding current NIP. */
+ if ((*the_target->read_memory) (curr_pc - 4,
+ (unsigned char *) &curr_insn, 4) != 0)
+ return 0;
+ /* It should be a "sc" instruction. */
+ if (curr_insn != INSTR_SC)
+ return 0;
+ /* System call number should be NR_spu_run. */
+ if (curr_r0 != NR_spu_run)
+ return 0;
+
+ return 1;
+}
+
+static CORE_ADDR
+ppc_get_pc (struct regcache *regcache)
+{
+ CORE_ADDR addr;
+ int fd;
+
+ if (parse_spufs_run (regcache, &fd, &addr))
+ {
unsigned int pc;
- collect_register_by_name ("pc", &pc);
+ (*the_target->read_memory) (addr, (unsigned char *) &pc, 4);
+ return ((CORE_ADDR)1 << 63)
+ | ((CORE_ADDR)fd << 32) | (CORE_ADDR) (pc - 4);
+ }
+ else if (register_size (0) == 4)
+ {
+ unsigned int pc;
+ collect_register_by_name (regcache, "pc", &pc);
return (CORE_ADDR) pc;
}
else
{
unsigned long pc;
- collect_register_by_name ("pc", &pc);
+ collect_register_by_name (regcache, "pc", &pc);
return (CORE_ADDR) pc;
}
}
static void
-ppc_set_pc (CORE_ADDR pc)
+ppc_set_pc (struct regcache *regcache, CORE_ADDR pc)
{
- if (register_size (0) == 4)
+ CORE_ADDR addr;
+ int fd;
+
+ if (parse_spufs_run (regcache, &fd, &addr))
+ {
+ unsigned int newpc = pc;
+ (*the_target->write_memory) (addr, (unsigned char *) &newpc, 4);
+ }
+ else if (register_size (0) == 4)
{
unsigned int newpc = pc;
- supply_register_by_name ("pc", &newpc);
+ supply_register_by_name (regcache, "pc", &newpc);
}
else
{
unsigned long newpc = pc;
- supply_register_by_name ("pc", &newpc);
+ supply_register_by_name (regcache, "pc", &newpc);
}
}
{
#ifdef __powerpc64__
long msr;
+ struct regcache *regcache;
/* On a 64-bit host, assume 64-bit inferior process with no
AltiVec registers. Reset ppc_hwcap to ensure that the
/* Only if the high bit of the MSR is set, we actually have
a 64-bit inferior. */
- collect_register_by_name ("msr", &msr);
+ regcache = new_register_cache ();
+ fetch_inferior_registers (regcache, find_regno ("msr"));
+ collect_register_by_name (regcache, "msr", &msr);
+ free_register_cache (regcache);
if (msr < 0)
{
ppc_get_hwcap (&ppc_hwcap);
- if (ppc_hwcap & PPC_FEATURE_HAS_ALTIVEC)
- init_registers_powerpc_altivec64l ();
+ if (ppc_hwcap & PPC_FEATURE_CELL)
+ init_registers_powerpc_cell64l ();
+ else if (ppc_hwcap & PPC_FEATURE_HAS_VSX)
+ {
+ /* Power ISA 2.05 (implemented by Power 6 and newer processors)
+ increases the FPSCR from 32 bits to 64 bits. Even though Power 7
+ supports this ISA version, it doesn't have PPC_FEATURE_ARCH_2_05
+ set, only PPC_FEATURE_ARCH_2_06. Since for now the only bits
+ used in the higher half of the register are for Decimal Floating
+ Point, we check if that feature is available to decide the size
+ of the FPSCR. */
+ if (ppc_hwcap & PPC_FEATURE_HAS_DFP)
+ init_registers_powerpc_isa205_vsx64l ();
+ else
+ init_registers_powerpc_vsx64l ();
+ }
+ else if (ppc_hwcap & PPC_FEATURE_HAS_ALTIVEC)
+ {
+ if (ppc_hwcap & PPC_FEATURE_HAS_DFP)
+ init_registers_powerpc_isa205_altivec64l ();
+ else
+ init_registers_powerpc_altivec64l ();
+ }
return;
}
init_registers_powerpc_32l ();
ppc_get_hwcap (&ppc_hwcap);
- if (ppc_hwcap & PPC_FEATURE_HAS_ALTIVEC)
- init_registers_powerpc_altivec32l ();
+ if (ppc_hwcap & PPC_FEATURE_CELL)
+ init_registers_powerpc_cell32l ();
+ else if (ppc_hwcap & PPC_FEATURE_HAS_VSX)
+ {
+ if (ppc_hwcap & PPC_FEATURE_HAS_DFP)
+ init_registers_powerpc_isa205_vsx32l ();
+ else
+ init_registers_powerpc_vsx32l ();
+ }
+ else if (ppc_hwcap & PPC_FEATURE_HAS_ALTIVEC)
+ {
+ if (ppc_hwcap & PPC_FEATURE_HAS_DFP)
+ init_registers_powerpc_isa205_altivec32l ();
+ else
+ init_registers_powerpc_altivec32l ();
+ }
/* On 32-bit machines, check for SPE registers.
Set the low target's regmap field as appropriately. */
init_registers_powerpc_e500l ();
the_low_target.regmap = ppc_regmap_e500;
}
+
+ /* If the FPSCR is 64-bit wide, we need to fetch the whole 64-bit
+ slot and not just its second word. The PT_FPSCR supplied in a
+ 32-bit GDB compilation doesn't reflect this. */
+ if (register_size (70) == 8)
+ ppc_regmap[70] = (48 + 2*32) * sizeof (long);
#endif
}
{
unsigned int insn;
- (*the_target->read_memory) (where, (unsigned char *) &insn, 4);
- if (insn == ppc_breakpoint)
- return 1;
- /* If necessary, recognize more trap instructions here. GDB only uses the
- one. */
+ if (where & ((CORE_ADDR)1 << 63))
+ {
+ char mem_annex[32];
+ sprintf (mem_annex, "%d/mem", (int)((where >> 32) & 0x7fffffff));
+ (*the_target->qxfer_spu) (mem_annex, (unsigned char *) &insn,
+ NULL, where & 0xffffffff, 4);
+ if (insn == 0x3fff)
+ return 1;
+ }
+ else
+ {
+ (*the_target->read_memory) (where, (unsigned char *) &insn, 4);
+ if (insn == ppc_breakpoint)
+ return 1;
+ /* If necessary, recognize more trap instructions here. GDB only uses
+ the one. */
+ }
+
return 0;
}
/* Provide only a fill function for the general register set. ps_lgetregs
will use this for NPTL support. */
-static void ppc_fill_gregset (void *buf)
+static void ppc_fill_gregset (struct regcache *regcache, void *buf)
{
int i;
for (i = 0; i < 32; i++)
- ppc_collect_ptrace_register (i, (char *) buf + ppc_regmap[i]);
+ ppc_collect_ptrace_register (regcache, i, (char *) buf + ppc_regmap[i]);
for (i = 64; i < 70; i++)
- ppc_collect_ptrace_register (i, (char *) buf + ppc_regmap[i]);
+ ppc_collect_ptrace_register (regcache, i, (char *) buf + ppc_regmap[i]);
for (i = 71; i < 73; i++)
- ppc_collect_ptrace_register (i, (char *) buf + ppc_regmap[i]);
+ ppc_collect_ptrace_register (regcache, i, (char *) buf + ppc_regmap[i]);
+}
+
+#ifndef PTRACE_GETVSXREGS
+#define PTRACE_GETVSXREGS 27
+#define PTRACE_SETVSXREGS 28
+#endif
+
+#define SIZEOF_VSXREGS 32*8
+
+static void
+ppc_fill_vsxregset (struct regcache *regcache, void *buf)
+{
+ int i, base;
+ char *regset = buf;
+
+ if (!(ppc_hwcap & PPC_FEATURE_HAS_VSX))
+ return;
+
+ base = find_regno ("vs0h");
+ for (i = 0; i < 32; i++)
+ collect_register (regcache, base + i, ®set[i * 8]);
+}
+
+static void
+ppc_store_vsxregset (struct regcache *regcache, const void *buf)
+{
+ int i, base;
+ const char *regset = buf;
+
+ if (!(ppc_hwcap & PPC_FEATURE_HAS_VSX))
+ return;
+
+ base = find_regno ("vs0h");
+ for (i = 0; i < 32; i++)
+ supply_register (regcache, base + i, ®set[i * 8]);
}
#ifndef PTRACE_GETVRREGS
#define SIZEOF_VRREGS 33*16+4
static void
-ppc_fill_vrregset (void *buf)
+ppc_fill_vrregset (struct regcache *regcache, void *buf)
{
int i, base;
char *regset = buf;
base = find_regno ("vr0");
for (i = 0; i < 32; i++)
- collect_register (base + i, ®set[i * 16]);
+ collect_register (regcache, base + i, ®set[i * 16]);
- collect_register_by_name ("vscr", ®set[32 * 16 + 12]);
- collect_register_by_name ("vrsave", ®set[33 * 16]);
+ collect_register_by_name (regcache, "vscr", ®set[32 * 16 + 12]);
+ collect_register_by_name (regcache, "vrsave", ®set[33 * 16]);
}
static void
-ppc_store_vrregset (const void *buf)
+ppc_store_vrregset (struct regcache *regcache, const void *buf)
{
int i, base;
const char *regset = buf;
base = find_regno ("vr0");
for (i = 0; i < 32; i++)
- supply_register (base + i, ®set[i * 16]);
+ supply_register (regcache, base + i, ®set[i * 16]);
- supply_register_by_name ("vscr", ®set[32 * 16 + 12]);
- supply_register_by_name ("vrsave", ®set[33 * 16]);
+ supply_register_by_name (regcache, "vscr", ®set[32 * 16 + 12]);
+ supply_register_by_name (regcache, "vrsave", ®set[33 * 16]);
}
#ifndef PTRACE_GETEVRREGS
};
static void
-ppc_fill_evrregset (void *buf)
+ppc_fill_evrregset (struct regcache *regcache, void *buf)
{
int i, ev0;
struct gdb_evrregset_t *regset = buf;
ev0 = find_regno ("ev0h");
for (i = 0; i < 32; i++)
- collect_register (ev0 + i, ®set->evr[i]);
+ collect_register (regcache, ev0 + i, ®set->evr[i]);
- collect_register_by_name ("acc", ®set->acc);
- collect_register_by_name ("spefscr", ®set->spefscr);
+ collect_register_by_name (regcache, "acc", ®set->acc);
+ collect_register_by_name (regcache, "spefscr", ®set->spefscr);
}
static void
-ppc_store_evrregset (const void *buf)
+ppc_store_evrregset (struct regcache *regcache, const void *buf)
{
int i, ev0;
const struct gdb_evrregset_t *regset = buf;
ev0 = find_regno ("ev0h");
for (i = 0; i < 32; i++)
- supply_register (ev0 + i, ®set->evr[i]);
+ supply_register (regcache, ev0 + i, ®set->evr[i]);
- supply_register_by_name ("acc", ®set->acc);
- supply_register_by_name ("spefscr", ®set->spefscr);
+ supply_register_by_name (regcache, "acc", ®set->acc);
+ supply_register_by_name (regcache, "spefscr", ®set->spefscr);
}
struct regset_info target_regsets[] = {
fetch them every time, but still fall back to PTRACE_PEEKUSER for the
general registers. Some kernels support these, but not the newer
PPC_PTRACE_GETREGS. */
- { PTRACE_GETVRREGS, PTRACE_SETVRREGS, SIZEOF_VRREGS, EXTENDED_REGS,
+ { PTRACE_GETVSXREGS, PTRACE_SETVSXREGS, 0, SIZEOF_VSXREGS, EXTENDED_REGS,
+ ppc_fill_vsxregset, ppc_store_vsxregset },
+ { PTRACE_GETVRREGS, PTRACE_SETVRREGS, 0, SIZEOF_VRREGS, EXTENDED_REGS,
ppc_fill_vrregset, ppc_store_vrregset },
- { PTRACE_GETEVRREGS, PTRACE_SETEVRREGS, 32 * 4 + 8 + 4, EXTENDED_REGS,
+ { PTRACE_GETEVRREGS, PTRACE_SETEVRREGS, 0, 32 * 4 + 8 + 4, EXTENDED_REGS,
ppc_fill_evrregset, ppc_store_evrregset },
- { 0, 0, 0, GENERAL_REGS, ppc_fill_gregset, NULL },
- { 0, 0, -1, -1, NULL, NULL }
+ { 0, 0, 0, 0, GENERAL_REGS, ppc_fill_gregset, NULL },
+ { 0, 0, 0, -1, -1, NULL, NULL }
};
struct linux_target_ops the_low_target = {
ppc_arch_setup,
ppc_num_regs,
ppc_regmap,
+ NULL,
ppc_cannot_fetch_register,
ppc_cannot_store_register,
+ NULL, /* fetch_register */
ppc_get_pc,
ppc_set_pc,
(const unsigned char *) &ppc_breakpoint,
projects / external / binutils.git / blobdiff