/* Target-dependent code for GDB, the GNU debugger.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
- 2011 Free Software Foundation, Inc.
+ Copyright (C) 2001-2012 Free Software Foundation, Inc.
Contributed by D.J. Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
for IBM Deutschland Entwicklung GmbH, IBM Corporation.
#include "linux-tdep.h"
#include "s390-tdep.h"
+#include "stap-probe.h"
+#include "ax.h"
+#include "ax-gdb.h"
+#include "user-regs.h"
+#include "cli/cli-utils.h"
+#include <ctype.h>
+
#include "features/s390-linux32.c"
+#include "features/s390-linux32v1.c"
+#include "features/s390-linux32v2.c"
#include "features/s390-linux64.c"
+#include "features/s390-linux64v1.c"
+#include "features/s390-linux64v2.c"
#include "features/s390x-linux64.c"
-
+#include "features/s390x-linux64v1.c"
+#include "features/s390x-linux64v2.c"
/* The tdep structure. */
return 0;
}
+static int
+s390_cannot_store_register (struct gdbarch *gdbarch, int regnum)
+{
+ /* The last-break address is read-only. */
+ return regnum == S390_LAST_BREAK_REGNUM;
+}
+
+static void
+s390_write_pc (struct regcache *regcache, CORE_ADDR pc)
+{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ regcache_cooked_write_unsigned (regcache, tdep->pc_regnum, pc);
+
+ /* Set special SYSTEM_CALL register to 0 to prevent the kernel from
+ messing with the PC we just installed, if we happen to be within
+ an interrupted system call that the kernel wants to restart.
+
+ Note that after we return from the dummy call, the SYSTEM_CALL and
+ ORIG_R2 registers will be automatically restored, and the kernel
+ continues to restart the system call at this point. */
+ if (register_size (gdbarch, S390_SYSTEM_CALL_REGNUM) > 0)
+ regcache_cooked_write_unsigned (regcache, S390_SYSTEM_CALL_REGNUM, 0);
+}
+
/* DWARF Register Mapping. */
S390_R4_REGNUM, S390_R5_REGNUM, S390_R6_REGNUM, S390_R7_REGNUM,
S390_R8_REGNUM, S390_R9_REGNUM, S390_R10_REGNUM, S390_R11_REGNUM,
S390_R12_REGNUM, S390_R13_REGNUM, S390_R14_REGNUM, S390_R15_REGNUM,
+
+ /* GNU/Linux-specific registers (not mapped). */
+ -1, -1, -1,
};
/* Convert DWARF register number REG to the appropriate register
/* GPR Uppper Halves. */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
+ /* GNU/Linux-specific optional "registers". */
+ 0x88, -1, -1,
};
int s390x_regmap_gregset[S390_NUM_REGS] =
0x30, 0x38, 0x40, 0x48,
0x50, 0x58, 0x60, 0x68,
0x70, 0x78, 0x80, 0x88,
+ /* GNU/Linux-specific optional "registers". */
+ 0xd0, -1, -1,
};
int s390_regmap_fpregset[S390_NUM_REGS] =
/* GPR Uppper Halves. */
-1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1,
+ /* GNU/Linux-specific optional "registers". */
+ -1, -1, -1,
};
int s390_regmap_upper[S390_NUM_REGS] =
0x10, 0x14, 0x18, 0x1c,
0x20, 0x24, 0x28, 0x2c,
0x30, 0x34, 0x38, 0x3c,
+ /* GNU/Linux-specific optional "registers". */
+ -1, -1, -1,
+};
+
+int s390_regmap_last_break[S390_NUM_REGS] =
+{
+ /* Program Status Word. */
+ -1, -1,
+ /* General Purpose Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* Access Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* Floating Point Control Word. */
+ -1,
+ /* Floating Point Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* GPR Uppper Halves. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* GNU/Linux-specific optional "registers". */
+ -1, 4, -1,
+};
+
+int s390x_regmap_last_break[S390_NUM_REGS] =
+{
+ /* Program Status Word. */
+ -1, -1,
+ /* General Purpose Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* Access Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* Floating Point Control Word. */
+ -1,
+ /* Floating Point Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* GPR Uppper Halves. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* GNU/Linux-specific optional "registers". */
+ -1, 0, -1,
+};
+
+int s390_regmap_system_call[S390_NUM_REGS] =
+{
+ /* Program Status Word. */
+ -1, -1,
+ /* General Purpose Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* Access Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* Floating Point Control Word. */
+ -1,
+ /* Floating Point Registers. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* GPR Uppper Halves. */
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1,
+ /* GNU/Linux-specific optional "registers". */
+ -1, -1, 0,
};
/* Supply register REGNUM from the register set REGSET to register cache
s390_collect_regset
};
-static struct core_regset_section s390_upper_regset_sections[] =
+static const struct regset s390_last_break_regset = {
+ s390_regmap_last_break,
+ s390_supply_regset,
+ s390_collect_regset
+};
+
+static const struct regset s390x_last_break_regset = {
+ s390x_regmap_last_break,
+ s390_supply_regset,
+ s390_collect_regset
+};
+
+static const struct regset s390_system_call_regset = {
+ s390_regmap_system_call,
+ s390_supply_regset,
+ s390_collect_regset
+};
+
+static struct core_regset_section s390_linux32_regset_sections[] =
+{
+ { ".reg", s390_sizeof_gregset, "general-purpose" },
+ { ".reg2", s390_sizeof_fpregset, "floating-point" },
+ { NULL, 0}
+};
+
+static struct core_regset_section s390_linux32v1_regset_sections[] =
+{
+ { ".reg", s390_sizeof_gregset, "general-purpose" },
+ { ".reg2", s390_sizeof_fpregset, "floating-point" },
+ { ".reg-s390-last-break", 8, "s390 last-break address" },
+ { NULL, 0}
+};
+
+static struct core_regset_section s390_linux32v2_regset_sections[] =
+{
+ { ".reg", s390_sizeof_gregset, "general-purpose" },
+ { ".reg2", s390_sizeof_fpregset, "floating-point" },
+ { ".reg-s390-last-break", 8, "s390 last-break address" },
+ { ".reg-s390-system-call", 4, "s390 system-call" },
+ { NULL, 0}
+};
+
+static struct core_regset_section s390_linux64_regset_sections[] =
{
{ ".reg", s390_sizeof_gregset, "general-purpose" },
{ ".reg2", s390_sizeof_fpregset, "floating-point" },
{ NULL, 0}
};
+static struct core_regset_section s390_linux64v1_regset_sections[] =
+{
+ { ".reg", s390_sizeof_gregset, "general-purpose" },
+ { ".reg2", s390_sizeof_fpregset, "floating-point" },
+ { ".reg-s390-high-gprs", 16*4, "s390 GPR upper halves" },
+ { ".reg-s390-last-break", 8, "s930 last-break address" },
+ { NULL, 0}
+};
+
+static struct core_regset_section s390_linux64v2_regset_sections[] =
+{
+ { ".reg", s390_sizeof_gregset, "general-purpose" },
+ { ".reg2", s390_sizeof_fpregset, "floating-point" },
+ { ".reg-s390-high-gprs", 16*4, "s390 GPR upper halves" },
+ { ".reg-s390-last-break", 8, "s930 last-break address" },
+ { ".reg-s390-system-call", 4, "s390 system-call" },
+ { NULL, 0}
+};
+
+static struct core_regset_section s390x_linux64_regset_sections[] =
+{
+ { ".reg", s390x_sizeof_gregset, "general-purpose" },
+ { ".reg2", s390_sizeof_fpregset, "floating-point" },
+ { NULL, 0}
+};
+
+static struct core_regset_section s390x_linux64v1_regset_sections[] =
+{
+ { ".reg", s390x_sizeof_gregset, "general-purpose" },
+ { ".reg2", s390_sizeof_fpregset, "floating-point" },
+ { ".reg-s390-last-break", 8, "s930 last-break address" },
+ { NULL, 0}
+};
+
+static struct core_regset_section s390x_linux64v2_regset_sections[] =
+{
+ { ".reg", s390x_sizeof_gregset, "general-purpose" },
+ { ".reg2", s390_sizeof_fpregset, "floating-point" },
+ { ".reg-s390-last-break", 8, "s930 last-break address" },
+ { ".reg-s390-system-call", 4, "s390 system-call" },
+ { NULL, 0}
+};
+
+
/* Return the appropriate register set for the core section identified
by SECT_NAME and SECT_SIZE. */
static const struct regset *
if (strcmp (sect_name, ".reg-s390-high-gprs") == 0 && sect_size >= 16*4)
return &s390_upper_regset;
+ if (strcmp (sect_name, ".reg-s390-last-break") == 0 && sect_size >= 8)
+ return (gdbarch_ptr_bit (gdbarch) == 32
+ ? &s390_last_break_regset : &s390x_last_break_regset);
+
+ if (strcmp (sect_name, ".reg-s390-system-call") == 0 && sect_size >= 4)
+ return &s390_system_call_regset;
+
return NULL;
}
struct target_ops *target, bfd *abfd)
{
asection *high_gprs = bfd_get_section_by_name (abfd, ".reg-s390-high-gprs");
+ asection *v1 = bfd_get_section_by_name (abfd, ".reg-s390-last-break");
+ asection *v2 = bfd_get_section_by_name (abfd, ".reg-s390-system-call");
asection *section = bfd_get_section_by_name (abfd, ".reg");
if (!section)
return NULL;
switch (bfd_section_size (abfd, section))
{
case s390_sizeof_gregset:
- return high_gprs? tdesc_s390_linux64 : tdesc_s390_linux32;
+ if (high_gprs)
+ return (v2? tdesc_s390_linux64v2 :
+ v1? tdesc_s390_linux64v1 : tdesc_s390_linux64);
+ else
+ return (v2? tdesc_s390_linux32v2 :
+ v1? tdesc_s390_linux32v1 : tdesc_s390_linux32);
case s390x_sizeof_gregset:
- return tdesc_s390x_linux64;
+ return (v2? tdesc_s390x_linux64v2 :
+ v1? tdesc_s390x_linux64v1 : tdesc_s390x_linux64);
default:
return NULL;
{
pv_t addr = s390_addr (data, d2, x2, b2);
- pv_t offset;
/* If it's a load from an in-line constant pool, then we can
simulate that, under the assumption that the code isn't
}
}
- /* Store return address. */
+ /* Store return PSWA. In 31-bit mode, keep addressing mode bit. */
+ if (word_size == 4)
+ {
+ ULONGEST pswa;
+ regcache_cooked_read_unsigned (regcache, S390_PSWA_REGNUM, &pswa);
+ bp_addr = (bp_addr & 0x7fffffff) | (pswa & 0x80000000);
+ }
regcache_cooked_write_unsigned (regcache, S390_RETADDR_REGNUM, bp_addr);
-
+
/* Store updated stack pointer. */
regcache_cooked_write_unsigned (regcache, S390_SP_REGNUM, sp);
}
static enum return_value_convention
-s390_return_value (struct gdbarch *gdbarch, struct type *func_type,
+s390_return_value (struct gdbarch *gdbarch, struct value *function,
struct type *type, struct regcache *regcache,
gdb_byte *out, const gdb_byte *in)
{
return 0;
}
+/* Implementation of `gdbarch_stap_is_single_operand', as defined in
+ gdbarch.h. */
+
+static int
+s390_stap_is_single_operand (struct gdbarch *gdbarch, const char *s)
+{
+ return ((isdigit (*s) && s[1] == '(' && s[2] == '%') /* Displacement
+ or indirection. */
+ || *s == '%' /* Register access. */
+ || isdigit (*s)); /* Literal number. */
+}
+
/* Set up gdbarch struct. */
static struct gdbarch *
struct gdbarch_tdep *tdep;
int tdep_abi;
int have_upper = 0;
+ int have_linux_v1 = 0;
+ int have_linux_v2 = 0;
int first_pseudo_reg, last_pseudo_reg;
/* Default ABI and register size. */
valid_p &= tdesc_numbered_register (feature, tdesc_data,
S390_A0_REGNUM + i, acrs[i]);
+ /* Optional GNU/Linux-specific "registers". */
+ feature = tdesc_find_feature (tdesc, "org.gnu.gdb.s390.linux");
+ if (feature)
+ {
+ tdesc_numbered_register (feature, tdesc_data,
+ S390_ORIG_R2_REGNUM, "orig_r2");
+
+ if (tdesc_numbered_register (feature, tdesc_data,
+ S390_LAST_BREAK_REGNUM, "last_break"))
+ have_linux_v1 = 1;
+
+ if (tdesc_numbered_register (feature, tdesc_data,
+ S390_SYSTEM_CALL_REGNUM, "system_call"))
+ have_linux_v2 = 1;
+
+ if (have_linux_v2 > have_linux_v1)
+ valid_p = 0;
+ }
+
if (!valid_p)
{
tdesc_data_cleanup (tdesc_data);
set_gdbarch_regset_from_core_section (gdbarch,
s390_regset_from_core_section);
set_gdbarch_core_read_description (gdbarch, s390_core_read_description);
- if (have_upper)
- set_gdbarch_core_regset_sections (gdbarch, s390_upper_regset_sections);
+ set_gdbarch_cannot_store_register (gdbarch, s390_cannot_store_register);
+ set_gdbarch_write_pc (gdbarch, s390_write_pc);
set_gdbarch_pseudo_register_read (gdbarch, s390_pseudo_register_read);
set_gdbarch_pseudo_register_write (gdbarch, s390_pseudo_register_write);
set_tdesc_pseudo_register_name (gdbarch, s390_pseudo_register_name);
set_gdbarch_addr_bits_remove (gdbarch, s390_addr_bits_remove);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
+
+ if (have_upper)
+ {
+ if (have_linux_v2)
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390_linux64v2_regset_sections);
+ else if (have_linux_v1)
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390_linux64v1_regset_sections);
+ else
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390_linux64_regset_sections);
+ }
+ else
+ {
+ if (have_linux_v2)
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390_linux32v2_regset_sections);
+ else if (have_linux_v1)
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390_linux32v1_regset_sections);
+ else
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390_linux32_regset_sections);
+ }
break;
case ABI_LINUX_ZSERIES:
s390_address_class_type_flags_to_name);
set_gdbarch_address_class_name_to_type_flags (gdbarch,
s390_address_class_name_to_type_flags);
+
+ if (have_linux_v2)
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390x_linux64v2_regset_sections);
+ else if (have_linux_v1)
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390x_linux64v1_regset_sections);
+ else
+ set_gdbarch_core_regset_sections (gdbarch,
+ s390x_linux64_regset_sections);
break;
}
set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
+ /* SystemTap functions. */
+ set_gdbarch_stap_register_prefix (gdbarch, "%");
+ set_gdbarch_stap_register_indirection_prefix (gdbarch, "(");
+ set_gdbarch_stap_register_indirection_suffix (gdbarch, ")");
+ set_gdbarch_stap_is_single_operand (gdbarch, s390_stap_is_single_operand);
+
return gdbarch;
}
/* Hook us into the gdbarch mechanism. */
register_gdbarch_init (bfd_arch_s390, s390_gdbarch_init);
- /* Initialize the Linux target descriptions. */
+ /* Initialize the GNU/Linux target descriptions. */
initialize_tdesc_s390_linux32 ();
+ initialize_tdesc_s390_linux32v1 ();
+ initialize_tdesc_s390_linux32v2 ();
initialize_tdesc_s390_linux64 ();
+ initialize_tdesc_s390_linux64v1 ();
+ initialize_tdesc_s390_linux64v2 ();
initialize_tdesc_s390x_linux64 ();
+ initialize_tdesc_s390x_linux64v1 ();
+ initialize_tdesc_s390x_linux64v2 ();
}
projects / binutils-gdb.git / blobdiff