/* GNU/Linux S/390 specific low level interface, for the remote server
for GDB.
- Copyright (C) 2001-2002, 2005-2012 Free Software Foundation, Inc.
+ Copyright (C) 2001-2015 Free Software Foundation, Inc.
This file is part of GDB.
#define HWCAP_S390_HIGH_GPRS 512
#endif
+#ifndef HWCAP_S390_TE
+#define HWCAP_S390_TE 1024
+#endif
+
+#ifndef HWCAP_S390_VX
+#define HWCAP_S390_VX 2048
+#endif
+
#ifndef PTRACE_GETREGSET
#define PTRACE_GETREGSET 0x4204
#endif
/* Defined in auto-generated file s390-linux32.c. */
void init_registers_s390_linux32 (void);
+extern const struct target_desc *tdesc_s390_linux32;
+
/* Defined in auto-generated file s390-linux32v1.c. */
void init_registers_s390_linux32v1 (void);
+extern const struct target_desc *tdesc_s390_linux32v1;
+
/* Defined in auto-generated file s390-linux32v2.c. */
void init_registers_s390_linux32v2 (void);
+extern const struct target_desc *tdesc_s390_linux32v2;
+
/* Defined in auto-generated file s390-linux64.c. */
void init_registers_s390_linux64 (void);
+extern const struct target_desc *tdesc_s390_linux64;
+
/* Defined in auto-generated file s390-linux64v1.c. */
void init_registers_s390_linux64v1 (void);
+extern const struct target_desc *tdesc_s390_linux64v1;
+
/* Defined in auto-generated file s390-linux64v2.c. */
void init_registers_s390_linux64v2 (void);
+extern const struct target_desc *tdesc_s390_linux64v2;
+
+/* Defined in auto-generated file s390-te-linux64.c. */
+void init_registers_s390_te_linux64 (void);
+extern const struct target_desc *tdesc_s390_te_linux64;
+
+/* Defined in auto-generated file s390-vx-linux64.c. */
+void init_registers_s390_vx_linux64 (void);
+extern const struct target_desc *tdesc_s390_vx_linux64;
+
+/* Defined in auto-generated file s390-tevx-linux64.c. */
+void init_registers_s390_tevx_linux64 (void);
+extern const struct target_desc *tdesc_s390_tevx_linux64;
+
/* Defined in auto-generated file s390x-linux64.c. */
void init_registers_s390x_linux64 (void);
+extern const struct target_desc *tdesc_s390x_linux64;
+
/* Defined in auto-generated file s390x-linux64v1.c. */
void init_registers_s390x_linux64v1 (void);
+extern const struct target_desc *tdesc_s390x_linux64v1;
+
/* Defined in auto-generated file s390x-linux64v2.c. */
void init_registers_s390x_linux64v2 (void);
+extern const struct target_desc *tdesc_s390x_linux64v2;
+
+/* Defined in auto-generated file s390x-te-linux64.c. */
+void init_registers_s390x_te_linux64 (void);
+extern const struct target_desc *tdesc_s390x_te_linux64;
+
+/* Defined in auto-generated file s390x-vx-linux64.c. */
+void init_registers_s390x_vx_linux64 (void);
+extern const struct target_desc *tdesc_s390x_vx_linux64;
+
+/* Defined in auto-generated file s390x-tevx-linux64.c. */
+void init_registers_s390x_tevx_linux64 (void);
+extern const struct target_desc *tdesc_s390x_tevx_linux64;
#define s390_num_regs 52
static void
s390_collect_ptrace_register (struct regcache *regcache, int regno, char *buf)
{
- int size = register_size (regno);
+ int size = register_size (regcache->tdesc, regno);
if (size < sizeof (long))
{
- int regaddr = the_low_target.regmap[regno];
+ const struct regs_info *regs_info = (*the_low_target.regs_info) ();
+ struct usrregs_info *usr = regs_info->usrregs;
+ int regaddr = usr->regmap[regno];
memset (buf, 0, sizeof (long));
- if ((regno ^ 1) < the_low_target.num_regs
- && the_low_target.regmap[regno ^ 1] == regaddr)
+ if ((regno ^ 1) < usr->num_regs
+ && usr->regmap[regno ^ 1] == regaddr)
{
collect_register (regcache, regno & ~1, buf);
collect_register (regcache, (regno & ~1) + 1,
{
/* Convert 4-byte PSW mask to 8 bytes by clearing bit 12 and copying
the basic addressing mode bit from the PSW address. */
- char *addr = alloca (register_size (regno ^ 1));
+ char *addr = alloca (register_size (regcache->tdesc, regno ^ 1));
collect_register (regcache, regno, buf);
collect_register (regcache, regno ^ 1, addr);
buf[1] &= ~0x8;
s390_supply_ptrace_register (struct regcache *regcache,
int regno, const char *buf)
{
- int size = register_size (regno);
+ int size = register_size (regcache->tdesc, regno);
if (size < sizeof (long))
{
- int regaddr = the_low_target.regmap[regno];
+ const struct regs_info *regs_info = (*the_low_target.regs_info) ();
+ struct usrregs_info *usr = regs_info->usrregs;
+ int regaddr = usr->regmap[regno];
- if ((regno ^ 1) < the_low_target.num_regs
- && the_low_target.regmap[regno ^ 1] == regaddr)
+ if ((regno ^ 1) < usr->num_regs
+ && usr->regmap[regno ^ 1] == regaddr)
{
supply_register (regcache, regno & ~1, buf);
supply_register (regcache, (regno & ~1) + 1,
/* Convert 8-byte PSW mask to 4 bytes by setting bit 12 and copying
the basic addressing mode into the PSW address. */
char *mask = alloca (size);
- char *addr = alloca (register_size (regno ^ 1));
+ char *addr = alloca (register_size (regcache->tdesc, regno ^ 1));
memcpy (mask, buf, size);
mask[1] |= 0x8;
supply_register (regcache, regno, mask);
/* Provide only a fill function for the general register set. ps_lgetregs
will use this for NPTL support. */
-static void s390_fill_gregset (struct regcache *regcache, void *buf)
+static void
+s390_fill_gregset (struct regcache *regcache, void *buf)
{
int i;
+ const struct regs_info *regs_info = (*the_low_target.regs_info) ();
+ struct usrregs_info *usr = regs_info->usrregs;
- for (i = 0; i < the_low_target.num_regs; i++)
+ for (i = 0; i < usr->num_regs; i++)
{
- if (the_low_target.regmap[i] < PT_PSWMASK
- || the_low_target.regmap[i] > PT_ACR15)
+ if (usr->regmap[i] < PT_PSWMASK
+ || usr->regmap[i] > PT_ACR15)
continue;
- s390_collect_ptrace_register (regcache, i, (char *) buf
- + the_low_target.regmap[i]);
+ s390_collect_ptrace_register (regcache, i,
+ (char *) buf + usr->regmap[i]);
}
}
/* Fill and store functions for extended register sets. */
-static void
-s390_fill_last_break (struct regcache *regcache, void *buf)
-{
- /* Last break address is read-only. */
-}
-
static void
s390_store_last_break (struct regcache *regcache, const void *buf)
{
- supply_register_by_name (regcache, "last_break",
- (const char *)buf + 8 - register_size (0));
+ const char *p;
+
+ p = (const char *) buf + 8 - register_size (regcache->tdesc, 0);
+ supply_register_by_name (regcache, "last_break", p);
}
static void
supply_register_by_name (regcache, "system_call", buf);
}
-struct regset_info target_regsets[] = {
+static void
+s390_store_tdb (struct regcache *regcache, const void *buf)
+{
+ int tdb0 = find_regno (regcache->tdesc, "tdb0");
+ int tr0 = find_regno (regcache->tdesc, "tr0");
+ int i;
+
+ for (i = 0; i < 4; i++)
+ supply_register (regcache, tdb0 + i, (const char *) buf + 8 * i);
+
+ for (i = 0; i < 16; i++)
+ supply_register (regcache, tr0 + i, (const char *) buf + 8 * (16 + i));
+}
+
+static void
+s390_fill_vxrs_low (struct regcache *regcache, void *buf)
+{
+ int v0 = find_regno (regcache->tdesc, "v0l");
+ int i;
+
+ for (i = 0; i < 16; i++)
+ collect_register (regcache, v0 + i, (char *) buf + 8 * i);
+}
+
+static void
+s390_store_vxrs_low (struct regcache *regcache, const void *buf)
+{
+ int v0 = find_regno (regcache->tdesc, "v0l");
+ int i;
+
+ for (i = 0; i < 16; i++)
+ supply_register (regcache, v0 + i, (const char *) buf + 8 * i);
+}
+
+static void
+s390_fill_vxrs_high (struct regcache *regcache, void *buf)
+{
+ int v16 = find_regno (regcache->tdesc, "v16");
+ int i;
+
+ for (i = 0; i < 16; i++)
+ collect_register (regcache, v16 + i, (char *) buf + 16 * i);
+}
+
+static void
+s390_store_vxrs_high (struct regcache *regcache, const void *buf)
+{
+ int v16 = find_regno (regcache->tdesc, "v16");
+ int i;
+
+ for (i = 0; i < 16; i++)
+ supply_register (regcache, v16 + i, (const char *) buf + 16 * i);
+}
+
+static struct regset_info s390_regsets[] = {
{ 0, 0, 0, 0, GENERAL_REGS, s390_fill_gregset, NULL },
- /* Last break address is read-only; do not attempt PTRACE_SETREGSET. */
- { PTRACE_GETREGSET, PTRACE_GETREGSET, NT_S390_LAST_BREAK, 0,
- EXTENDED_REGS, s390_fill_last_break, s390_store_last_break },
+ /* Last break address is read-only; no fill function. */
+ { PTRACE_GETREGSET, -1, NT_S390_LAST_BREAK, 0, EXTENDED_REGS,
+ NULL, s390_store_last_break },
{ PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_SYSTEM_CALL, 0,
EXTENDED_REGS, s390_fill_system_call, s390_store_system_call },
+ /* TDB is read-only. */
+ { PTRACE_GETREGSET, -1, NT_S390_TDB, 0, EXTENDED_REGS,
+ NULL, s390_store_tdb },
+ { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_LOW, 0,
+ EXTENDED_REGS, s390_fill_vxrs_low, s390_store_vxrs_low },
+ { PTRACE_GETREGSET, PTRACE_SETREGSET, NT_S390_VXRS_HIGH, 0,
+ EXTENDED_REGS, s390_fill_vxrs_high, s390_store_vxrs_high },
{ 0, 0, 0, -1, -1, NULL, NULL }
};
static CORE_ADDR
s390_get_pc (struct regcache *regcache)
{
- if (register_size (0) == 4)
+ if (register_size (regcache->tdesc, 0) == 4)
{
unsigned int pswa;
collect_register_by_name (regcache, "pswa", &pswa);
static void
s390_set_pc (struct regcache *regcache, CORE_ADDR newpc)
{
- if (register_size (0) == 4)
+ if (register_size (regcache->tdesc, 0) == 4)
{
unsigned int pswa;
collect_register_by_name (regcache, "pswa", &pswa);
#ifdef __s390x__
static unsigned long
-s390_get_hwcap (void)
+s390_get_hwcap (const struct target_desc *tdesc)
{
- int wordsize = register_size (0);
+ int wordsize = register_size (tdesc, 0);
unsigned char *data = alloca (2 * wordsize);
int offset = 0;
iov.iov_base = buf;
iov.iov_len = regsize;
- if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) < 0)
- return 0;
- else
+ if (ptrace (PTRACE_GETREGSET, pid, (long) regset, (long) &iov) >= 0
+ || errno == ENODATA)
return 1;
+ return 0;
}
+#ifdef __s390x__
+/* For a 31-bit inferior, whether the kernel supports using the full
+ 64-bit GPRs. */
+static int have_hwcap_s390_high_gprs = 0;
+#endif
+
static void
s390_arch_setup (void)
{
+ const struct target_desc *tdesc;
struct regset_info *regset;
/* Check whether the kernel supports extra register sets. */
- int pid = pid_of (get_thread_lwp (current_inferior));
+ int pid = pid_of (current_thread);
int have_regset_last_break
= s390_check_regset (pid, NT_S390_LAST_BREAK, 8);
int have_regset_system_call
= s390_check_regset (pid, NT_S390_SYSTEM_CALL, 4);
-
- /* Update target_regsets according to available register sets. */
- for (regset = target_regsets; regset->fill_function != NULL; regset++)
- if (regset->get_request == PTRACE_GETREGSET)
- switch (regset->nt_type)
- {
- case NT_S390_LAST_BREAK:
- regset->size = have_regset_last_break? 8 : 0;
- break;
- case NT_S390_SYSTEM_CALL:
- regset->size = have_regset_system_call? 4 : 0;
- break;
- default:
- break;
- }
+ int have_regset_tdb = s390_check_regset (pid, NT_S390_TDB, 256);
+ int have_regset_vxrs = s390_check_regset (pid, NT_S390_VXRS_LOW, 128)
+ && s390_check_regset (pid, NT_S390_VXRS_HIGH, 256);
/* Assume 31-bit inferior process. */
if (have_regset_system_call)
- init_registers_s390_linux32v2 ();
+ tdesc = tdesc_s390_linux32v2;
else if (have_regset_last_break)
- init_registers_s390_linux32v1 ();
+ tdesc = tdesc_s390_linux32v1;
else
- init_registers_s390_linux32 ();
-
- the_low_target.num_regs = s390_num_regs;
- the_low_target.regmap = s390_regmap;
+ tdesc = tdesc_s390_linux32;
/* On a 64-bit host, check the low bit of the (31-bit) PSWM
-- if this is one, we actually have a 64-bit inferior. */
#ifdef __s390x__
{
unsigned int pswm;
- struct regcache *regcache = new_register_cache ();
- fetch_inferior_registers (regcache, find_regno ("pswm"));
+ struct regcache *regcache = new_register_cache (tdesc);
+
+ fetch_inferior_registers (regcache, find_regno (tdesc, "pswm"));
collect_register_by_name (regcache, "pswm", &pswm);
free_register_cache (regcache);
if (pswm & 1)
{
- if (have_regset_system_call)
- init_registers_s390x_linux64v2 ();
+ if (have_regset_tdb)
+ have_regset_tdb =
+ (s390_get_hwcap (tdesc_s390x_linux64v2) & HWCAP_S390_TE) != 0;
+ if (have_regset_vxrs)
+ have_regset_vxrs =
+ (s390_get_hwcap (tdesc_s390x_linux64v2) & HWCAP_S390_VX) != 0;
+
+ if (have_regset_vxrs)
+ tdesc = (have_regset_tdb ? tdesc_s390x_tevx_linux64 :
+ tdesc_s390x_vx_linux64);
+ else if (have_regset_tdb)
+ tdesc = tdesc_s390x_te_linux64;
+ else if (have_regset_system_call)
+ tdesc = tdesc_s390x_linux64v2;
else if (have_regset_last_break)
- init_registers_s390x_linux64v1 ();
+ tdesc = tdesc_s390x_linux64v1;
else
- init_registers_s390x_linux64 ();
+ tdesc = tdesc_s390x_linux64;
}
/* For a 31-bit inferior, check whether the kernel supports
using the full 64-bit GPRs. */
- else if (s390_get_hwcap () & HWCAP_S390_HIGH_GPRS)
+ else if (s390_get_hwcap (tdesc) & HWCAP_S390_HIGH_GPRS)
{
- if (have_regset_system_call)
- init_registers_s390_linux64v2 ();
+ have_hwcap_s390_high_gprs = 1;
+ if (have_regset_tdb)
+ have_regset_tdb = (s390_get_hwcap (tdesc) & HWCAP_S390_TE) != 0;
+ if (have_regset_vxrs)
+ have_regset_vxrs = (s390_get_hwcap (tdesc) & HWCAP_S390_VX) != 0;
+
+ if (have_regset_vxrs)
+ tdesc = (have_regset_tdb ? tdesc_s390_tevx_linux64 :
+ tdesc_s390_vx_linux64);
+ else if (have_regset_tdb)
+ tdesc = tdesc_s390_te_linux64;
+ else if (have_regset_system_call)
+ tdesc = tdesc_s390_linux64v2;
else if (have_regset_last_break)
- init_registers_s390_linux64v1 ();
+ tdesc = tdesc_s390_linux64v1;
else
- init_registers_s390_linux64 ();
-
- the_low_target.num_regs = s390_num_regs_3264;
- the_low_target.regmap = s390_regmap_3264;
+ tdesc = tdesc_s390_linux64;
}
}
#endif
+
+ /* Update target_regsets according to available register sets. */
+ for (regset = s390_regsets; regset->size >= 0; regset++)
+ if (regset->get_request == PTRACE_GETREGSET)
+ switch (regset->nt_type)
+ {
+ case NT_S390_LAST_BREAK:
+ regset->size = have_regset_last_break? 8 : 0;
+ break;
+ case NT_S390_SYSTEM_CALL:
+ regset->size = have_regset_system_call? 4 : 0;
+ break;
+ case NT_S390_TDB:
+ regset->size = have_regset_tdb ? 256 : 0;
+ break;
+ case NT_S390_VXRS_LOW:
+ regset->size = have_regset_vxrs ? 128 : 0;
+ break;
+ case NT_S390_VXRS_HIGH:
+ regset->size = have_regset_vxrs ? 256 : 0;
+ break;
+ default:
+ break;
+ }
+
+ current_process ()->tdesc = tdesc;
}
return memcmp (c, s390_breakpoint, s390_breakpoint_len) == 0;
}
+static struct usrregs_info s390_usrregs_info =
+ {
+ s390_num_regs,
+ s390_regmap,
+ };
+
+static struct regsets_info s390_regsets_info =
+ {
+ s390_regsets, /* regsets */
+ 0, /* num_regsets */
+ NULL, /* disabled_regsets */
+ };
+
+static struct regs_info regs_info =
+ {
+ NULL, /* regset_bitmap */
+ &s390_usrregs_info,
+ &s390_regsets_info
+ };
+
+#ifdef __s390x__
+static struct usrregs_info s390_usrregs_info_3264 =
+ {
+ s390_num_regs_3264,
+ s390_regmap_3264
+ };
+
+static struct regsets_info s390_regsets_info_3264 =
+ {
+ s390_regsets, /* regsets */
+ 0, /* num_regsets */
+ NULL, /* disabled_regsets */
+ };
+
+static struct regs_info regs_info_3264 =
+ {
+ NULL, /* regset_bitmap */
+ &s390_usrregs_info_3264,
+ &s390_regsets_info_3264
+ };
+#endif
+
+static const struct regs_info *
+s390_regs_info (void)
+{
+#ifdef __s390x__
+ if (have_hwcap_s390_high_gprs)
+ {
+ const struct target_desc *tdesc = current_process ()->tdesc;
+
+ if (register_size (tdesc, 0) == 4)
+ return ®s_info_3264;
+ }
+#endif
+ return ®s_info;
+}
struct linux_target_ops the_low_target = {
s390_arch_setup,
- s390_num_regs,
- s390_regmap,
- NULL,
+ s390_regs_info,
s390_cannot_fetch_register,
s390_cannot_store_register,
+ NULL, /* fetch_register */
s390_get_pc,
s390_set_pc,
s390_breakpoint,
NULL,
s390_breakpoint_len,
s390_breakpoint_at,
+ NULL, /* supports_z_point_type */
NULL,
NULL,
NULL,
s390_collect_ptrace_register,
s390_supply_ptrace_register,
};
+
+void
+initialize_low_arch (void)
+{
+ /* Initialize the Linux target descriptions. */
+
+ init_registers_s390_linux32 ();
+ init_registers_s390_linux32v1 ();
+ init_registers_s390_linux32v2 ();
+ init_registers_s390_linux64 ();
+ init_registers_s390_linux64v1 ();
+ init_registers_s390_linux64v2 ();
+ init_registers_s390_te_linux64 ();
+ init_registers_s390_vx_linux64 ();
+ init_registers_s390_tevx_linux64 ();
+ init_registers_s390x_linux64 ();
+ init_registers_s390x_linux64v1 ();
+ init_registers_s390x_linux64v2 ();
+ init_registers_s390x_te_linux64 ();
+ init_registers_s390x_vx_linux64 ();
+ init_registers_s390x_tevx_linux64 ();
+
+ initialize_regsets_info (&s390_regsets_info);
+#ifdef __s390x__
+ initialize_regsets_info (&s390_regsets_info_3264);
+#endif
+}
projects / deliverable / binutils-gdb.git / blobdiff