/* Target-dependent code for the IA-64 for GDB, the GNU debugger.
- Copyright 1999, 2000, 2001, 2002, 2003, 2004 Free Software
- Foundation, Inc.
+ Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
+ 2009 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
#include "gdbcore.h"
#include "arch-utils.h"
#include "floatformat.h"
+#include "gdbtypes.h"
#include "regcache.h"
#include "reggroups.h"
#include "frame.h"
#include "elf-bfd.h"
#include "dis-asm.h"
#include "infcall.h"
+#include "osabi.h"
#include "ia64-tdep.h"
+#include "cp-abi.h"
#ifdef HAVE_LIBUNWIND_IA64_H
#include "elf/ia64.h" /* for PT_IA_64_UNWIND value */
#include "libunwind-frame.h"
#include "libunwind-ia64.h"
-#endif
-/* Hook for determining the global pointer when calling functions in
- the inferior under AIX. The initialization code in ia64-aix-nat.c
- sets this hook to the address of a function which will find the
- global pointer for a given address.
-
- The generic code which uses the dynamic section in the inferior for
- finding the global pointer is not of much use on AIX since the
- values obtained from the inferior have not been relocated. */
+/* Note: KERNEL_START is supposed to be an address which is not going
+ to ever contain any valid unwind info. For ia64 linux, the choice
+ of 0xc000000000000000 is fairly safe since that's uncached space.
+
+ We use KERNEL_START as follows: after obtaining the kernel's
+ unwind table via getunwind(), we project its unwind data into
+ address-range KERNEL_START-(KERNEL_START+ktab_size) and then
+ when ia64_access_mem() sees a memory access to this
+ address-range, we redirect it to ktab instead.
+
+ None of this hackery is needed with a modern kernel/libcs
+ which uses the kernel virtual DSO to provide access to the
+ kernel's unwind info. In that case, ktab_size remains 0 and
+ hence the value of KERNEL_START doesn't matter. */
-CORE_ADDR (*native_find_global_pointer) (CORE_ADDR) = 0;
+#define KERNEL_START 0xc000000000000000ULL
+
+static size_t ktab_size = 0;
+struct ia64_table_entry
+ {
+ uint64_t start_offset;
+ uint64_t end_offset;
+ uint64_t info_offset;
+ };
+
+static struct ia64_table_entry *ktab = NULL;
+
+#endif
/* An enumeration of the different IA-64 instruction types. */
#define BUNDLE_LEN 16
+/* See the saved memory layout comment for ia64_memory_insert_breakpoint. */
+
+#if BREAKPOINT_MAX < BUNDLE_LEN - 2
+# error "BREAKPOINT_MAX < BUNDLE_LEN - 2"
+#endif
+
static gdbarch_init_ftype ia64_gdbarch_init;
static gdbarch_register_name_ftype ia64_register_name;
static gdbarch_register_type_ftype ia64_register_type;
static gdbarch_breakpoint_from_pc_ftype ia64_breakpoint_from_pc;
static gdbarch_skip_prologue_ftype ia64_skip_prologue;
-static gdbarch_extract_return_value_ftype ia64_extract_return_value;
static struct type *is_float_or_hfa_type (struct type *t);
-
-static struct type *builtin_type_ia64_ext;
+static CORE_ADDR ia64_find_global_pointer (CORE_ADDR faddr);
#define NUM_IA64_RAW_REGS 462
};
-struct gdbarch_tdep
- {
- CORE_ADDR (*sigcontext_register_address) (CORE_ADDR, int);
- /* OS specific function which, given a frame address
- and register number, returns the offset to the
- given register from the start of the frame. */
- CORE_ADDR (*find_global_pointer) (CORE_ADDR);
- };
+static int
+floatformat_valid (const struct floatformat *fmt, const void *from)
+{
+ return 1;
+}
-#define SIGCONTEXT_REGISTER_ADDRESS \
- (gdbarch_tdep (current_gdbarch)->sigcontext_register_address)
-#define FIND_GLOBAL_POINTER \
- (gdbarch_tdep (current_gdbarch)->find_global_pointer)
+static const struct floatformat floatformat_ia64_ext =
+{
+ floatformat_little, 82, 0, 1, 17, 65535, 0x1ffff, 18, 64,
+ floatformat_intbit_yes, "floatformat_ia64_ext", floatformat_valid, NULL
+};
+
+static const struct floatformat *floatformats_ia64_ext[2] =
+{
+ &floatformat_ia64_ext,
+ &floatformat_ia64_ext
+};
-int
+static struct type *
+ia64_ext_type (struct gdbarch *gdbarch)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+ if (!tdep->ia64_ext_type)
+ tdep->ia64_ext_type
+ = arch_float_type (gdbarch, 128, "builtin_type_ia64_ext",
+ floatformats_ia64_ext);
+
+ return tdep->ia64_ext_type;
+}
+
+static int
ia64_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
struct reggroup *group)
{
}
static const char *
-ia64_register_name (int reg)
+ia64_register_name (struct gdbarch *gdbarch, int reg)
{
return ia64_register_names[reg];
}
ia64_register_type (struct gdbarch *arch, int reg)
{
if (reg >= IA64_FR0_REGNUM && reg <= IA64_FR127_REGNUM)
- return builtin_type_ia64_ext;
+ return ia64_ext_type (arch);
else
- return builtin_type_long;
+ return builtin_type (arch)->builtin_long;
}
static int
-ia64_dwarf_reg_to_regnum (int reg)
+ia64_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
{
if (reg >= IA64_GR32_REGNUM && reg <= IA64_GR127_REGNUM)
return V32_REGNUM + (reg - IA64_GR32_REGNUM);
return reg;
}
-static int
-floatformat_valid (const struct floatformat *fmt, const char *from)
-{
- return 1;
-}
-
-const struct floatformat floatformat_ia64_ext =
-{
- floatformat_little, 82, 0, 1, 17, 65535, 0x1ffff, 18, 64,
- floatformat_intbit_yes, "floatformat_ia64_ext", floatformat_valid
-};
-
/* Extract ``len'' bits from an instruction bundle starting at
bit ``from''. */
static long long
-extract_bit_field (char *bundle, int from, int len)
+extract_bit_field (const char *bundle, int from, int len)
{
long long result = 0LL;
int to = from + len;
replace_bit_field (bundle, instr, 5+41*slotnum, 41);
}
-static enum instruction_type template_encoding_table[32][3] =
+static const enum instruction_type template_encoding_table[32][3] =
{
{ M, I, I }, /* 00 */
{ M, I, I }, /* 01 */
at the assembly language level. */
if (slotnum > 2)
{
- warning ("Can't fetch instructions for slot numbers greater than 2.\n"
- "Using slot 0 instead");
+ warning (_("Can't fetch instructions for slot numbers greater than 2.\n"
+ "Using slot 0 instead"));
slotnum = 0;
}
simulators. So I changed the pattern slightly to do "break.i 0x080001"
instead. But that didn't work either (I later found out that this
pattern was used by the simulator that I was using.) So I ended up
- using the pattern seen below. */
+ using the pattern seen below.
+
+ SHADOW_CONTENTS has byte-based addressing (PLACED_ADDRESS and SHADOW_LEN)
+ while we need bit-based addressing as the instructions length is 41 bits and
+ we must not modify/corrupt the adjacent slots in the same bundle.
+ Fortunately we may store larger memory incl. the adjacent bits with the
+ original memory content (not the possibly already stored breakpoints there).
+ We need to be careful in ia64_memory_remove_breakpoint to always restore
+ only the specific bits of this instruction ignoring any adjacent stored
+ bits.
+
+ We use the original addressing with the low nibble in the range <0..2> which
+ gets incorrectly interpreted by generic non-ia64 breakpoint_restore_shadows
+ as the direct byte offset of SHADOW_CONTENTS. We store whole BUNDLE_LEN
+ bytes just without these two possibly skipped bytes to not to exceed to the
+ next bundle.
+
+ If we would like to store the whole bundle to SHADOW_CONTENTS we would have
+ to store already the base address (`address & ~0x0f') into PLACED_ADDRESS.
+ In such case there is no other place where to store
+ SLOTNUM (`adress & 0x0f', value in the range <0..2>). We need to know
+ SLOTNUM in ia64_memory_remove_breakpoint.
+
+ ia64 16-byte bundle layout:
+ | 5 bits | slot 0 with 41 bits | slot 1 with 41 bits | slot 2 with 41 bits |
+
+ The current addressing used by the code below:
+ original PC placed_address placed_size required covered
+ == bp_tgt->shadow_len reqd \subset covered
+ 0xABCDE0 0xABCDE0 0xE <0x0...0x5> <0x0..0xD>
+ 0xABCDE1 0xABCDE1 0xE <0x5...0xA> <0x1..0xE>
+ 0xABCDE2 0xABCDE2 0xE <0xA...0xF> <0x2..0xF>
+
+ `objdump -d' and some other tools show a bit unjustified offsets:
+ original PC byte where starts the instruction objdump offset
+ 0xABCDE0 0xABCDE0 0xABCDE0
+ 0xABCDE1 0xABCDE5 0xABCDE6
+ 0xABCDE2 0xABCDEA 0xABCDEC
+ */
-#if 0
-#define IA64_BREAKPOINT 0x00002000040LL
-#endif
#define IA64_BREAKPOINT 0x00003333300LL
static int
-ia64_memory_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
+ia64_memory_insert_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
- char bundle[BUNDLE_LEN];
+ CORE_ADDR addr = bp_tgt->placed_address;
+ gdb_byte bundle[BUNDLE_LEN];
int slotnum = (int) (addr & 0x0f) / SLOT_MULTIPLIER;
- long long instr;
+ long long instr_breakpoint;
int val;
int template;
+ struct cleanup *cleanup;
if (slotnum > 2)
- error("Can't insert breakpoint for slot numbers greater than 2.");
+ error (_("Can't insert breakpoint for slot numbers greater than 2."));
addr &= ~0x0f;
+ /* Disable the automatic memory restoration from breakpoints while
+ we read our instruction bundle. Otherwise, the general restoration
+ mechanism kicks in and we would possibly remove parts of the adjacent
+ placed breakpoints. It is due to our SHADOW_CONTENTS overlapping the real
+ breakpoint instruction bits region. */
+ cleanup = make_show_memory_breakpoints_cleanup (1);
val = target_read_memory (addr, bundle, BUNDLE_LEN);
- /* Check for L type instruction in 2nd slot, if present then
- bump up the slot number to the 3rd slot */
+ /* Check for L type instruction in slot 1, if present then bump up the slot
+ number to the slot 2. */
template = extract_bit_field (bundle, 0, 5);
- if (slotnum == 1 && template_encoding_table[template][1] == L)
- {
- slotnum = 2;
- }
-
- instr = slotN_contents (bundle, slotnum);
- memcpy(contents_cache, &instr, sizeof(instr));
+ if (slotnum == 1 && template_encoding_table[template][slotnum] == L)
+ slotnum = 2;
+
+ /* Slot number 2 may skip at most 2 bytes at the beginning. */
+ bp_tgt->placed_size = bp_tgt->shadow_len = BUNDLE_LEN - 2;
+
+ /* Store the whole bundle, except for the initial skipped bytes by the slot
+ number interpreted as bytes offset in PLACED_ADDRESS. */
+ memcpy (bp_tgt->shadow_contents, bundle + slotnum, bp_tgt->shadow_len);
+
+ /* Breakpoints already present in the code will get deteacted and not get
+ reinserted by bp_loc_is_permanent. Multiple breakpoints at the same
+ location cannot induce the internal error as they are optimized into
+ a single instance by update_global_location_list. */
+ instr_breakpoint = slotN_contents (bundle, slotnum);
+ if (instr_breakpoint == IA64_BREAKPOINT)
+ internal_error (__FILE__, __LINE__,
+ _("Address %s already contains a breakpoint."),
+ paddress (gdbarch, bp_tgt->placed_address));
replace_slotN_contents (bundle, IA64_BREAKPOINT, slotnum);
+
if (val == 0)
- target_write_memory (addr, bundle, BUNDLE_LEN);
+ val = target_write_memory (addr + slotnum, bundle + slotnum,
+ bp_tgt->shadow_len);
+ do_cleanups (cleanup);
return val;
}
static int
-ia64_memory_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
+ia64_memory_remove_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
- char bundle[BUNDLE_LEN];
+ CORE_ADDR addr = bp_tgt->placed_address;
+ gdb_byte bundle_mem[BUNDLE_LEN], bundle_saved[BUNDLE_LEN];
int slotnum = (addr & 0x0f) / SLOT_MULTIPLIER;
- long long instr;
+ long long instr_breakpoint, instr_saved;
int val;
int template;
+ struct cleanup *cleanup;
addr &= ~0x0f;
- val = target_read_memory (addr, bundle, BUNDLE_LEN);
-
- /* Check for L type instruction in 2nd slot, if present then
- bump up the slot number to the 3rd slot */
- template = extract_bit_field (bundle, 0, 5);
- if (slotnum == 1 && template_encoding_table[template][1] == L)
+ /* Disable the automatic memory restoration from breakpoints while
+ we read our instruction bundle. Otherwise, the general restoration
+ mechanism kicks in and we would possibly remove parts of the adjacent
+ placed breakpoints. It is due to our SHADOW_CONTENTS overlapping the real
+ breakpoint instruction bits region. */
+ cleanup = make_show_memory_breakpoints_cleanup (1);
+ val = target_read_memory (addr, bundle_mem, BUNDLE_LEN);
+
+ /* Check for L type instruction in slot 1, if present then bump up the slot
+ number to the slot 2. */
+ template = extract_bit_field (bundle_mem, 0, 5);
+ if (slotnum == 1 && template_encoding_table[template][slotnum] == L)
+ slotnum = 2;
+
+ gdb_assert (bp_tgt->placed_size == BUNDLE_LEN - 2);
+ gdb_assert (bp_tgt->placed_size == bp_tgt->shadow_len);
+
+ instr_breakpoint = slotN_contents (bundle_mem, slotnum);
+ if (instr_breakpoint != IA64_BREAKPOINT)
{
- slotnum = 2;
+ warning (_("Cannot remove breakpoint at address %s, "
+ "no break instruction at such address."),
+ paddress (gdbarch, bp_tgt->placed_address));
+ return -1;
}
- memcpy (&instr, contents_cache, sizeof instr);
- replace_slotN_contents (bundle, instr, slotnum);
+ /* Extract the original saved instruction from SLOTNUM normalizing its
+ bit-shift for INSTR_SAVED. */
+ memcpy (bundle_saved, bundle_mem, BUNDLE_LEN);
+ memcpy (bundle_saved + slotnum, bp_tgt->shadow_contents, bp_tgt->shadow_len);
+ instr_saved = slotN_contents (bundle_saved, slotnum);
+
+ /* In BUNDLE_MEM be careful to modify only the bits belonging to SLOTNUM and
+ never any other possibly also stored in SHADOW_CONTENTS. */
+ replace_slotN_contents (bundle_mem, instr_saved, slotnum);
if (val == 0)
- target_write_memory (addr, bundle, BUNDLE_LEN);
+ val = target_write_memory (addr, bundle_mem, BUNDLE_LEN);
+ do_cleanups (cleanup);
return val;
}
-/* We don't really want to use this, but remote.c needs to call it in order
- to figure out if Z-packets are supported or not. Oh, well. */
-const unsigned char *
-ia64_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
+/* As gdbarch_breakpoint_from_pc ranges have byte granularity and ia64
+ instruction slots ranges are bit-granular (41 bits) we have to provide an
+ extended range as described for ia64_memory_insert_breakpoint. We also take
+ care of preserving the `break' instruction 21-bit (or 62-bit) parameter to
+ make a match for permanent breakpoints. */
+
+static const gdb_byte *
+ia64_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pcptr, int *lenptr)
{
- static unsigned char breakpoint[] =
- { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- *lenptr = sizeof (breakpoint);
-#if 0
- *pcptr &= ~0x0f;
-#endif
- return breakpoint;
+ CORE_ADDR addr = *pcptr;
+ static gdb_byte bundle[BUNDLE_LEN];
+ int slotnum = (int) (*pcptr & 0x0f) / SLOT_MULTIPLIER;
+ long long instr_fetched;
+ int val;
+ int template;
+ struct cleanup *cleanup;
+
+ if (slotnum > 2)
+ error (_("Can't insert breakpoint for slot numbers greater than 2."));
+
+ addr &= ~0x0f;
+
+ /* Enable the automatic memory restoration from breakpoints while
+ we read our instruction bundle to match bp_loc_is_permanent. */
+ cleanup = make_show_memory_breakpoints_cleanup (0);
+ val = target_read_memory (addr, bundle, BUNDLE_LEN);
+ do_cleanups (cleanup);
+
+ /* The memory might be unreachable. This can happen, for instance,
+ when the user inserts a breakpoint at an invalid address. */
+ if (val != 0)
+ return NULL;
+
+ /* Check for L type instruction in slot 1, if present then bump up the slot
+ number to the slot 2. */
+ template = extract_bit_field (bundle, 0, 5);
+ if (slotnum == 1 && template_encoding_table[template][slotnum] == L)
+ slotnum = 2;
+
+ /* A break instruction has its all its opcode bits cleared except for
+ the parameter value. For L+X slot pair we are at the X slot (slot 2) so
+ we should not touch the L slot - the upper 41 bits of the parameter. */
+ instr_fetched = slotN_contents (bundle, slotnum);
+ instr_fetched &= 0x1003ffffc0LL;
+ replace_slotN_contents (bundle, instr_fetched, slotnum);
+
+ *lenptr = BUNDLE_LEN - 2;
+
+ /* SLOTNUM is possibly already locally modified - use caller's *PCPTR. */
+ return bundle + (*pcptr & 0x0f);
}
static CORE_ADDR
-ia64_read_pc (ptid_t ptid)
+ia64_read_pc (struct regcache *regcache)
{
- CORE_ADDR psr_value = read_register_pid (IA64_PSR_REGNUM, ptid);
- CORE_ADDR pc_value = read_register_pid (IA64_IP_REGNUM, ptid);
- int slot_num = (psr_value >> 41) & 3;
+ ULONGEST psr_value, pc_value;
+ int slot_num;
+
+ regcache_cooked_read_unsigned (regcache, IA64_PSR_REGNUM, &psr_value);
+ regcache_cooked_read_unsigned (regcache, IA64_IP_REGNUM, &pc_value);
+ slot_num = (psr_value >> 41) & 3;
return pc_value | (slot_num * SLOT_MULTIPLIER);
}
void
-ia64_write_pc (CORE_ADDR new_pc, ptid_t ptid)
+ia64_write_pc (struct regcache *regcache, CORE_ADDR new_pc)
{
int slot_num = (int) (new_pc & 0xf) / SLOT_MULTIPLIER;
- CORE_ADDR psr_value = read_register_pid (IA64_PSR_REGNUM, ptid);
+ ULONGEST psr_value;
+
+ regcache_cooked_read_unsigned (regcache, IA64_PSR_REGNUM, &psr_value);
psr_value &= ~(3LL << 41);
- psr_value |= (CORE_ADDR)(slot_num & 0x3) << 41;
+ psr_value |= (ULONGEST)(slot_num & 0x3) << 41;
new_pc &= ~0xfLL;
- write_register_pid (IA64_PSR_REGNUM, psr_value, ptid);
- write_register_pid (IA64_IP_REGNUM, new_pc, ptid);
+ regcache_cooked_write_unsigned (regcache, IA64_PSR_REGNUM, psr_value);
+ regcache_cooked_write_unsigned (regcache, IA64_IP_REGNUM, new_pc);
}
#define IS_NaT_COLLECTION_ADDR(addr) ((((addr) >> 3) & 0x3f) == 0x3f)
static void
ia64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
- int regnum, void *buf)
+ int regnum, gdb_byte *buf)
{
if (regnum >= V32_REGNUM && regnum <= V127_REGNUM)
{
- ULONGEST bsp;
- ULONGEST cfm;
- CORE_ADDR reg;
- regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
- regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
-
- /* The bsp points at the end of the register frame so we
- subtract the size of frame from it to get start of register frame. */
- bsp = rse_address_add (bsp, -(cfm & 0x7f));
-
- if ((cfm & 0x7f) > regnum - V32_REGNUM)
+#ifdef HAVE_LIBUNWIND_IA64_H
+ /* First try and use the libunwind special reg accessor, otherwise fallback to
+ standard logic. */
+ if (!libunwind_is_initialized ()
+ || libunwind_get_reg_special (gdbarch, regcache, regnum, buf) != 0)
+#endif
{
- ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
- reg = read_memory_integer ((CORE_ADDR)reg_addr, 8);
- store_unsigned_integer (buf, register_size (current_gdbarch, regnum), reg);
+ /* The fallback position is to assume that r32-r127 are found sequentially
+ in memory starting at $bof. This isn't always true, but without libunwind,
+ this is the best we can do. */
+ ULONGEST cfm;
+ ULONGEST bsp;
+ CORE_ADDR reg;
+ regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
+
+ /* The bsp points at the end of the register frame so we
+ subtract the size of frame from it to get start of register frame. */
+ bsp = rse_address_add (bsp, -(cfm & 0x7f));
+
+ if ((cfm & 0x7f) > regnum - V32_REGNUM)
+ {
+ ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
+ reg = read_memory_integer ((CORE_ADDR)reg_addr, 8);
+ store_unsigned_integer (buf, register_size (gdbarch, regnum), reg);
+ }
+ else
+ store_unsigned_integer (buf, register_size (gdbarch, regnum), 0);
}
- else
- store_unsigned_integer (buf, register_size (current_gdbarch, regnum), 0);
}
else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
{
ULONGEST unat;
regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat);
unatN_val = (unat & (1LL << (regnum - IA64_NAT0_REGNUM))) != 0;
- store_unsigned_integer (buf, register_size (current_gdbarch, regnum), unatN_val);
+ store_unsigned_integer (buf, register_size (gdbarch, regnum), unatN_val);
}
else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
{
natN_val = (nat_collection >> nat_bit) & 1;
}
- store_unsigned_integer (buf, register_size (current_gdbarch, regnum), natN_val);
+ store_unsigned_integer (buf, register_size (gdbarch, regnum), natN_val);
}
else if (regnum == VBOF_REGNUM)
{
/* The bsp points at the end of the register frame so we
subtract the size of frame from it to get beginning of frame. */
vbsp = rse_address_add (bsp, -(cfm & 0x7f));
- store_unsigned_integer (buf, register_size (current_gdbarch, regnum), vbsp);
+ store_unsigned_integer (buf, register_size (gdbarch, regnum), vbsp);
}
else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
{
+ ((regnum - VP16_REGNUM) + rrb_pr) % 48;
}
prN_val = (pr & (1LL << (regnum - VP0_REGNUM))) != 0;
- store_unsigned_integer (buf, register_size (current_gdbarch, regnum), prN_val);
+ store_unsigned_integer (buf, register_size (gdbarch, regnum), prN_val);
}
else
- memset (buf, 0, register_size (current_gdbarch, regnum));
+ memset (buf, 0, register_size (gdbarch, regnum));
}
static void
ia64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
- int regnum, const void *buf)
+ int regnum, const gdb_byte *buf)
{
if (regnum >= V32_REGNUM && regnum <= V127_REGNUM)
{
{
ULONGEST unatN_val, unat, unatN_mask;
regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat);
- unatN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
+ unatN_val = extract_unsigned_integer (buf, register_size (gdbarch, regnum));
unatN_mask = (1LL << (regnum - IA64_NAT0_REGNUM));
if (unatN_val == 0)
unat &= ~unatN_mask;
if ((cfm & 0x7f) > regnum - V32_REGNUM)
gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
- natN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
+ natN_val = extract_unsigned_integer (buf, register_size (gdbarch, regnum));
if (gr_addr != 0 && (natN_val == 0 || natN_val == 1))
{
nat_collection |= natN_mask;
else
nat_collection &= ~natN_mask;
- store_unsigned_integer (nat_buf, register_size (current_gdbarch, regnum), nat_collection);
+ store_unsigned_integer (nat_buf, register_size (gdbarch, regnum), nat_collection);
write_memory (nat_addr, nat_buf, 8);
}
}
regnum = VP16_REGNUM
+ ((regnum - VP16_REGNUM) + rrb_pr) % 48;
}
- prN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
+ prN_val = extract_unsigned_integer (buf, register_size (gdbarch, regnum));
prN_mask = (1LL << (regnum - VP0_REGNUM));
if (prN_val == 0)
pr &= ~prN_mask;
and the special ia64 floating point register format. */
static int
-ia64_convert_register_p (int regno, struct type *type)
+ia64_convert_register_p (struct gdbarch *gdbarch, int regno, struct type *type)
{
- return (regno >= IA64_FR0_REGNUM && regno <= IA64_FR127_REGNUM);
+ return (regno >= IA64_FR0_REGNUM && regno <= IA64_FR127_REGNUM
+ && type != ia64_ext_type (gdbarch));
}
static void
ia64_register_to_value (struct frame_info *frame, int regnum,
- struct type *valtype, void *out)
+ struct type *valtype, gdb_byte *out)
{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
char in[MAX_REGISTER_SIZE];
frame_register_read (frame, regnum, in);
- convert_typed_floating (in, builtin_type_ia64_ext, out, valtype);
+ convert_typed_floating (in, ia64_ext_type (gdbarch), out, valtype);
}
static void
ia64_value_to_register (struct frame_info *frame, int regnum,
- struct type *valtype, const void *in)
+ struct type *valtype, const gdb_byte *in)
{
+ struct gdbarch *gdbarch = get_frame_arch (frame);
char out[MAX_REGISTER_SIZE];
- convert_typed_floating (in, valtype, out, builtin_type_ia64_ext);
+ convert_typed_floating (in, valtype, out, ia64_ext_type (gdbarch));
put_frame_register (frame, regnum, out);
}
{
struct symtab_and_line prologue_sal;
CORE_ADDR start_pc = pc;
+ CORE_ADDR end_pc;
+
+ /* The prologue can not possibly go past the function end itself,
+ so we can already adjust LIM_PC accordingly. */
+ if (find_pc_partial_function (pc, NULL, NULL, &end_pc) && end_pc < lim_pc)
+ lim_pc = end_pc;
/* Start off not trusting the limit. */
*trust_limit = 0;
}
static CORE_ADDR
-examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *next_frame, struct ia64_frame_cache *cache)
+examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc,
+ struct frame_info *this_frame,
+ struct ia64_frame_cache *cache)
{
CORE_ADDR next_pc;
CORE_ADDR last_prologue_pc = pc;
we do not want to interpret the prologue and calculate the
addresses of various registers such as the return address.
We will instead treat the frame as frameless. */
- if (!next_frame ||
+ if (!this_frame ||
(sof == (cache->cfm & 0x7f) &&
sol == ((cache->cfm >> 7) & 0x7f)))
frameless = 0;
/* Hmm... whether or not this will work will depend on
where the pc is. If it's still early in the prologue
this'll be wrong. FIXME */
- if (next_frame)
+ if (this_frame)
{
- frame_unwind_register (next_frame, sp_regnum, buf);
+ get_frame_register (this_frame, sp_regnum, buf);
saved_sp = extract_unsigned_integer (buf, 8);
}
spill_addr = saved_sp
spill_reg = rN;
last_prologue_pc = next_pc;
}
- else if (qp == 0 && rM >= 32 && rM < 40 && !instores[rM] &&
+ else if (qp == 0 && rM >= 32 && rM < 40 && !instores[rM-32] &&
rN < 256 && imm == 0)
{
/* mov rN, rM where rM is an input register */
pc = next_pc;
}
- /* If not frameless and we aren't called by skip_prologue, then we need to calculate
- registers for the previous frame which will be needed later. */
+ /* If not frameless and we aren't called by skip_prologue, then we need
+ to calculate registers for the previous frame which will be needed
+ later. */
- if (!frameless && next_frame)
+ if (!frameless && this_frame)
{
/* Extract the size of the rotating portion of the stack
frame and the register rename base from the current
}
else if (cfm_reg != 0)
{
- frame_unwind_register (next_frame, cfm_reg, buf);
+ get_frame_register (this_frame, cfm_reg, buf);
cfm = extract_unsigned_integer (buf, 8);
}
cache->prev_cfm = cfm;
sol = (cfm >> 7) & 0x7f;
rrb_gr = (cfm >> 18) & 0x7f;
- /* The previous bof only requires subtraction of the sol (size of locals)
- due to the overlap between output and input of subsequent frames. */
+ /* The previous bof only requires subtraction of the sol (size of
+ locals) due to the overlap between output and input of
+ subsequent frames. */
bof = rse_address_add (bof, -sol);
for (i = 0, addr = bof;
}
CORE_ADDR
-ia64_skip_prologue (CORE_ADDR pc)
+ia64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
struct ia64_frame_cache cache;
cache.base = 0;
/* Normal frames. */
static struct ia64_frame_cache *
-ia64_frame_cache (struct frame_info *next_frame, void **this_cache)
+ia64_frame_cache (struct frame_info *this_frame, void **this_cache)
{
struct ia64_frame_cache *cache;
char buf[8];
cache = ia64_alloc_frame_cache ();
*this_cache = cache;
- frame_unwind_register (next_frame, sp_regnum, buf);
+ get_frame_register (this_frame, sp_regnum, buf);
cache->saved_sp = extract_unsigned_integer (buf, 8);
/* We always want the bsp to point to the end of frame.
This way, we can always get the beginning of frame (bof)
by subtracting frame size. */
- frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ get_frame_register (this_frame, IA64_BSP_REGNUM, buf);
cache->bsp = extract_unsigned_integer (buf, 8);
- frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
+ get_frame_register (this_frame, IA64_PSR_REGNUM, buf);
psr = extract_unsigned_integer (buf, 8);
- frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
+ get_frame_register (this_frame, IA64_CFM_REGNUM, buf);
cfm = extract_unsigned_integer (buf, 8);
cache->sof = (cfm & 0x7f);
cache->cfm = cfm;
- cache->pc = frame_func_unwind (next_frame);
+ cache->pc = get_frame_func (this_frame);
if (cache->pc != 0)
- examine_prologue (cache->pc, frame_pc_unwind (next_frame), next_frame, cache);
+ examine_prologue (cache->pc, get_frame_pc (this_frame), this_frame, cache);
cache->base = cache->saved_sp + cache->mem_stack_frame_size;
}
static void
-ia64_frame_this_id (struct frame_info *next_frame, void **this_cache,
+ia64_frame_this_id (struct frame_info *this_frame, void **this_cache,
struct frame_id *this_id)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct ia64_frame_cache *cache =
- ia64_frame_cache (next_frame, this_cache);
+ ia64_frame_cache (this_frame, this_cache);
- /* This marks the outermost frame. */
+ /* If outermost frame, mark with null frame id. */
if (cache->base == 0)
- return;
-
- (*this_id) = frame_id_build_special (cache->base, cache->pc, cache->bsp);
+ (*this_id) = null_frame_id;
+ else
+ (*this_id) = frame_id_build_special (cache->base, cache->pc, cache->bsp);
if (gdbarch_debug >= 1)
fprintf_unfiltered (gdb_stdlog,
- "regular frame id: code 0x%s, stack 0x%s, special 0x%s, next_frame %p\n",
- paddr_nz (this_id->code_addr),
- paddr_nz (this_id->stack_addr),
- paddr_nz (cache->bsp), next_frame);
+ "regular frame id: code %s, stack %s, special %s, this_frame %s\n",
+ paddress (gdbarch, this_id->code_addr),
+ paddress (gdbarch, this_id->stack_addr),
+ paddress (gdbarch, cache->bsp),
+ host_address_to_string (this_frame));
}
-static void
-ia64_frame_prev_register (struct frame_info *next_frame, void **this_cache,
- int regnum, int *optimizedp,
- enum lval_type *lvalp, CORE_ADDR *addrp,
- int *realnump, void *valuep)
+static struct value *
+ia64_frame_prev_register (struct frame_info *this_frame, void **this_cache,
+ int regnum)
{
- struct ia64_frame_cache *cache =
- ia64_frame_cache (next_frame, this_cache);
- char dummy_valp[MAX_REGISTER_SIZE];
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct ia64_frame_cache *cache = ia64_frame_cache (this_frame, this_cache);
char buf[8];
gdb_assert (regnum >= 0);
if (!target_has_registers)
- error ("No registers.");
+ error (_("No registers."));
- *optimizedp = 0;
- *addrp = 0;
- *lvalp = not_lval;
- *realnump = -1;
+ if (regnum == gdbarch_sp_regnum (gdbarch))
+ return frame_unwind_got_constant (this_frame, regnum, cache->base);
- /* Rather than check each time if valuep is non-null, supply a dummy buffer
- when valuep is not supplied. */
- if (!valuep)
- valuep = dummy_valp;
-
- memset (valuep, 0, register_size (current_gdbarch, regnum));
-
- if (regnum == SP_REGNUM)
- {
- /* Handle SP values for all frames but the topmost. */
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
- cache->base);
- }
else if (regnum == IA64_BSP_REGNUM)
{
- char cfm_valuep[MAX_REGISTER_SIZE];
- int cfm_optim;
- int cfm_realnum;
- enum lval_type cfm_lval;
- CORE_ADDR cfm_addr;
- CORE_ADDR bsp, prev_cfm, prev_bsp;
-
- /* We want to calculate the previous bsp as the end of the previous register stack frame.
- This corresponds to what the hardware bsp register will be if we pop the frame
- back which is why we might have been called. We know the beginning of the current
- frame is cache->bsp - cache->sof. This value in the previous frame points to
- the start of the output registers. We can calculate the end of that frame by adding
- the size of output (sof (size of frame) - sol (size of locals)). */
- ia64_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
- &cfm_optim, &cfm_lval, &cfm_addr, &cfm_realnum, cfm_valuep);
- prev_cfm = extract_unsigned_integer (cfm_valuep, 8);
-
+ struct value *val;
+ CORE_ADDR prev_cfm, bsp, prev_bsp;
+
+ /* We want to calculate the previous bsp as the end of the previous
+ register stack frame. This corresponds to what the hardware bsp
+ register will be if we pop the frame back which is why we might
+ have been called. We know the beginning of the current frame is
+ cache->bsp - cache->sof. This value in the previous frame points
+ to the start of the output registers. We can calculate the end of
+ that frame by adding the size of output:
+ (sof (size of frame) - sol (size of locals)). */
+ val = ia64_frame_prev_register (this_frame, this_cache, IA64_CFM_REGNUM);
+ prev_cfm = extract_unsigned_integer (value_contents_all (val), 8);
bsp = rse_address_add (cache->bsp, -(cache->sof));
- prev_bsp = rse_address_add (bsp, (prev_cfm & 0x7f) - ((prev_cfm >> 7) & 0x7f));
+ prev_bsp =
+ rse_address_add (bsp, (prev_cfm & 0x7f) - ((prev_cfm >> 7) & 0x7f));
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
- prev_bsp);
+ return frame_unwind_got_constant (this_frame, regnum, prev_bsp);
}
+
else if (regnum == IA64_CFM_REGNUM)
{
CORE_ADDR addr = cache->saved_regs[IA64_CFM_REGNUM];
if (addr != 0)
- {
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, valuep, register_size (current_gdbarch, regnum));
- }
- else if (cache->prev_cfm)
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), cache->prev_cfm);
- else if (cache->frameless)
- {
- CORE_ADDR cfm = 0;
- frame_unwind_register (next_frame, IA64_PFS_REGNUM, valuep);
- }
+ return frame_unwind_got_memory (this_frame, regnum, addr);
+
+ if (cache->prev_cfm)
+ return frame_unwind_got_constant (this_frame, regnum, cache->prev_cfm);
+
+ if (cache->frameless)
+ return frame_unwind_got_register (this_frame, IA64_PFS_REGNUM,
+ IA64_PFS_REGNUM);
+ return frame_unwind_got_register (this_frame, regnum, 0);
}
+
else if (regnum == IA64_VFP_REGNUM)
{
/* If the function in question uses an automatic register (r32-r127)
for the frame pointer, it'll be found by ia64_find_saved_register()
above. If the function lacks one of these frame pointers, we can
still provide a value since we know the size of the frame. */
- CORE_ADDR vfp = cache->base;
- store_unsigned_integer (valuep, register_size (current_gdbarch, IA64_VFP_REGNUM), vfp);
+ return frame_unwind_got_constant (this_frame, regnum, cache->base);
}
+
else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
{
- char pr_valuep[MAX_REGISTER_SIZE];
- int pr_optim;
- int pr_realnum;
- enum lval_type pr_lval;
- CORE_ADDR pr_addr;
- ULONGEST prN_val;
- ia64_frame_prev_register (next_frame, this_cache, IA64_PR_REGNUM,
- &pr_optim, &pr_lval, &pr_addr, &pr_realnum, pr_valuep);
+ struct value *pr_val;
+ ULONGEST prN;
+
+ pr_val = ia64_frame_prev_register (this_frame, this_cache,
+ IA64_PR_REGNUM);
if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
{
/* Fetch predicate register rename base from current frame
int rrb_pr = (cache->cfm >> 32) & 0x3f;
/* Adjust the register number to account for register rotation. */
- regnum = VP16_REGNUM
- + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
+ regnum = VP16_REGNUM + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
}
- prN_val = extract_bit_field ((unsigned char *) pr_valuep,
- regnum - VP0_REGNUM, 1);
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), prN_val);
+ prN = extract_bit_field (value_contents_all (pr_val),
+ regnum - VP0_REGNUM, 1);
+ return frame_unwind_got_constant (this_frame, regnum, prN);
}
+
else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
{
- char unat_valuep[MAX_REGISTER_SIZE];
- int unat_optim;
- int unat_realnum;
- enum lval_type unat_lval;
- CORE_ADDR unat_addr;
- ULONGEST unatN_val;
- ia64_frame_prev_register (next_frame, this_cache, IA64_UNAT_REGNUM,
- &unat_optim, &unat_lval, &unat_addr, &unat_realnum, unat_valuep);
- unatN_val = extract_bit_field ((unsigned char *) unat_valuep,
- regnum - IA64_NAT0_REGNUM, 1);
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
- unatN_val);
+ struct value *unat_val;
+ ULONGEST unatN;
+ unat_val = ia64_frame_prev_register (this_frame, this_cache,
+ IA64_UNAT_REGNUM);
+ unatN = extract_bit_field (value_contents_all (unat_val),
+ regnum - IA64_NAT0_REGNUM, 1);
+ return frame_unwind_got_constant (this_frame, regnum, unatN);
}
+
else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
{
int natval = 0;
interested in. */
CORE_ADDR gr_addr;
- gr_addr = cache->saved_regs[regnum - IA64_NAT0_REGNUM
- + IA64_GR0_REGNUM];
+ gr_addr = cache->saved_regs[regnum - IA64_NAT0_REGNUM + IA64_GR0_REGNUM];
+
if (gr_addr != 0)
{
/* Compute address of nat collection bits. */
CORE_ADDR bsp;
CORE_ADDR nat_collection;
int nat_bit;
+
/* If our nat collection address is bigger than bsp, we have to get
the nat collection from rnat. Otherwise, we fetch the nat
collection from the computed address. */
- frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ get_frame_register (this_frame, IA64_BSP_REGNUM, buf);
bsp = extract_unsigned_integer (buf, 8);
if (nat_addr >= bsp)
{
- frame_unwind_register (next_frame, IA64_RNAT_REGNUM, buf);
+ get_frame_register (this_frame, IA64_RNAT_REGNUM, buf);
nat_collection = extract_unsigned_integer (buf, 8);
}
else
natval = (nat_collection >> nat_bit) & 1;
}
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), natval);
+ return frame_unwind_got_constant (this_frame, regnum, natval);
}
+
else if (regnum == IA64_IP_REGNUM)
{
CORE_ADDR pc = 0;
CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
if (addr != 0)
- {
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
- pc = extract_unsigned_integer (buf, 8);
- }
+ {
+ read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM));
+ pc = extract_unsigned_integer (buf, 8);
+ }
else if (cache->frameless)
{
- frame_unwind_register (next_frame, IA64_BR0_REGNUM, buf);
+ get_frame_register (this_frame, IA64_BR0_REGNUM, buf);
pc = extract_unsigned_integer (buf, 8);
}
pc &= ~0xf;
- store_unsigned_integer (valuep, 8, pc);
+ return frame_unwind_got_constant (this_frame, regnum, pc);
}
+
else if (regnum == IA64_PSR_REGNUM)
{
- /* We don't know how to get the complete previous PSR, but we need it for
- the slot information when we unwind the pc (pc is formed of IP register
- plus slot information from PSR). To get the previous slot information,
- we mask it off the return address. */
+ /* We don't know how to get the complete previous PSR, but we need it
+ for the slot information when we unwind the pc (pc is formed of IP
+ register plus slot information from PSR). To get the previous
+ slot information, we mask it off the return address. */
ULONGEST slot_num = 0;
- CORE_ADDR pc= 0;
+ CORE_ADDR pc = 0;
CORE_ADDR psr = 0;
CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
- frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
+ get_frame_register (this_frame, IA64_PSR_REGNUM, buf);
psr = extract_unsigned_integer (buf, 8);
if (addr != 0)
{
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
+ read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM));
pc = extract_unsigned_integer (buf, 8);
}
else if (cache->frameless)
{
- CORE_ADDR pc;
- frame_unwind_register (next_frame, IA64_BR0_REGNUM, buf);
+ get_frame_register (this_frame, IA64_BR0_REGNUM, buf);
pc = extract_unsigned_integer (buf, 8);
}
psr &= ~(3LL << 41);
slot_num = pc & 0x3LL;
psr |= (CORE_ADDR)slot_num << 41;
- store_unsigned_integer (valuep, 8, psr);
+ return frame_unwind_got_constant (this_frame, regnum, psr);
}
+
else if (regnum == IA64_BR0_REGNUM)
{
- CORE_ADDR br0 = 0;
CORE_ADDR addr = cache->saved_regs[IA64_BR0_REGNUM];
+
if (addr != 0)
- {
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, buf, register_size (current_gdbarch, IA64_BR0_REGNUM));
- br0 = extract_unsigned_integer (buf, 8);
- }
- store_unsigned_integer (valuep, 8, br0);
+ return frame_unwind_got_memory (this_frame, regnum, addr);
+
+ return frame_unwind_got_constant (this_frame, regnum, 0);
}
- else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) ||
- (regnum >= V32_REGNUM && regnum <= V127_REGNUM))
+
+ else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM)
+ || (regnum >= V32_REGNUM && regnum <= V127_REGNUM))
{
CORE_ADDR addr = 0;
+
if (regnum >= V32_REGNUM)
regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
addr = cache->saved_regs[regnum];
if (addr != 0)
- {
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, valuep, register_size (current_gdbarch, regnum));
- }
- else if (cache->frameless)
+ return frame_unwind_got_memory (this_frame, regnum, addr);
+
+ if (cache->frameless)
{
- char r_valuep[MAX_REGISTER_SIZE];
- int r_optim;
- int r_realnum;
- enum lval_type r_lval;
- CORE_ADDR r_addr;
- CORE_ADDR prev_cfm, prev_bsp, prev_bof;
- CORE_ADDR addr = 0;
+ struct value *reg_val;
+ CORE_ADDR prev_cfm, prev_bsp, prev_bof;
+
+ /* FIXME: brobecker/2008-05-01: Doesn't this seem redundant
+ with the same code above? */
if (regnum >= V32_REGNUM)
regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
- ia64_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
- &r_optim, &r_lval, &r_addr, &r_realnum, r_valuep);
- prev_cfm = extract_unsigned_integer (r_valuep, 8);
- ia64_frame_prev_register (next_frame, this_cache, IA64_BSP_REGNUM,
- &r_optim, &r_lval, &r_addr, &r_realnum, r_valuep);
- prev_bsp = extract_unsigned_integer (r_valuep, 8);
+ reg_val = ia64_frame_prev_register (this_frame, this_cache,
+ IA64_CFM_REGNUM);
+ prev_cfm = extract_unsigned_integer (value_contents_all (reg_val),
+ 8);
+ reg_val = ia64_frame_prev_register (this_frame, this_cache,
+ IA64_BSP_REGNUM);
+ prev_bsp = extract_unsigned_integer (value_contents_all (reg_val),
+ 8);
prev_bof = rse_address_add (prev_bsp, -(prev_cfm & 0x7f));
addr = rse_address_add (prev_bof, (regnum - IA64_GR32_REGNUM));
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, valuep, register_size (current_gdbarch, regnum));
+ return frame_unwind_got_memory (this_frame, regnum, addr);
}
+
+ return frame_unwind_got_constant (this_frame, regnum, 0);
}
- else
+
+ else /* All other registers. */
{
CORE_ADDR addr = 0;
+
if (IA64_FR32_REGNUM <= regnum && regnum <= IA64_FR127_REGNUM)
{
/* Fetch floating point register rename base from current
/* If we have stored a memory address, access the register. */
addr = cache->saved_regs[regnum];
if (addr != 0)
- {
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, valuep, register_size (current_gdbarch, regnum));
- }
+ return frame_unwind_got_memory (this_frame, regnum, addr);
/* Otherwise, punt and get the current value of the register. */
else
- frame_unwind_register (next_frame, regnum, valuep);
+ return frame_unwind_got_register (this_frame, regnum, regnum);
}
-
- if (gdbarch_debug >= 1)
- fprintf_unfiltered (gdb_stdlog,
- "regular prev register <%d> <%s> is 0x%s\n", regnum,
- (((unsigned) regnum <= IA64_NAT127_REGNUM)
- ? ia64_register_names[regnum] : "r??"),
- paddr_nz (extract_unsigned_integer (valuep, 8)));
}
static const struct frame_unwind ia64_frame_unwind =
{
NORMAL_FRAME,
&ia64_frame_this_id,
- &ia64_frame_prev_register
+ &ia64_frame_prev_register,
+ NULL,
+ default_frame_sniffer
};
-static const struct frame_unwind *
-ia64_frame_sniffer (struct frame_info *next_frame)
-{
- return &ia64_frame_unwind;
-}
-
/* Signal trampolines. */
static void
-ia64_sigtramp_frame_init_saved_regs (struct ia64_frame_cache *cache)
+ia64_sigtramp_frame_init_saved_regs (struct frame_info *this_frame,
+ struct ia64_frame_cache *cache)
{
- if (SIGCONTEXT_REGISTER_ADDRESS)
+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame));
+
+ if (tdep->sigcontext_register_address)
{
int regno;
cache->saved_regs[IA64_VRAP_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_IP_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_IP_REGNUM);
cache->saved_regs[IA64_CFM_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_CFM_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_CFM_REGNUM);
cache->saved_regs[IA64_PSR_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_PSR_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_PSR_REGNUM);
cache->saved_regs[IA64_BSP_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_BSP_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_BSP_REGNUM);
cache->saved_regs[IA64_RNAT_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_RNAT_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_RNAT_REGNUM);
cache->saved_regs[IA64_CCV_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_CCV_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_CCV_REGNUM);
cache->saved_regs[IA64_UNAT_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_UNAT_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_UNAT_REGNUM);
cache->saved_regs[IA64_FPSR_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_FPSR_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_FPSR_REGNUM);
cache->saved_regs[IA64_PFS_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_PFS_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_PFS_REGNUM);
cache->saved_regs[IA64_LC_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_LC_REGNUM);
+ tdep->sigcontext_register_address (cache->base, IA64_LC_REGNUM);
for (regno = IA64_GR1_REGNUM; regno <= IA64_GR31_REGNUM; regno++)
cache->saved_regs[regno] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
+ tdep->sigcontext_register_address (cache->base, regno);
for (regno = IA64_BR0_REGNUM; regno <= IA64_BR7_REGNUM; regno++)
cache->saved_regs[regno] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
+ tdep->sigcontext_register_address (cache->base, regno);
for (regno = IA64_FR2_REGNUM; regno <= IA64_FR31_REGNUM; regno++)
cache->saved_regs[regno] =
- SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
+ tdep->sigcontext_register_address (cache->base, regno);
}
}
static struct ia64_frame_cache *
-ia64_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
+ia64_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache)
{
struct ia64_frame_cache *cache;
CORE_ADDR addr;
cache = ia64_alloc_frame_cache ();
- frame_unwind_register (next_frame, sp_regnum, buf);
+ get_frame_register (this_frame, sp_regnum, buf);
/* Note that frame size is hard-coded below. We cannot calculate it
via prologue examination. */
cache->base = extract_unsigned_integer (buf, 8) + 16;
- frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ get_frame_register (this_frame, IA64_BSP_REGNUM, buf);
cache->bsp = extract_unsigned_integer (buf, 8);
- frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
+ get_frame_register (this_frame, IA64_CFM_REGNUM, buf);
cache->cfm = extract_unsigned_integer (buf, 8);
cache->sof = cache->cfm & 0x7f;
- ia64_sigtramp_frame_init_saved_regs (cache);
+ ia64_sigtramp_frame_init_saved_regs (this_frame, cache);
*this_cache = cache;
return cache;
}
static void
-ia64_sigtramp_frame_this_id (struct frame_info *next_frame,
- void **this_cache, struct frame_id *this_id)
+ia64_sigtramp_frame_this_id (struct frame_info *this_frame,
+ void **this_cache, struct frame_id *this_id)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct ia64_frame_cache *cache =
- ia64_sigtramp_frame_cache (next_frame, this_cache);
+ ia64_sigtramp_frame_cache (this_frame, this_cache);
- (*this_id) = frame_id_build_special (cache->base, frame_pc_unwind (next_frame), cache->bsp);
+ (*this_id) = frame_id_build_special (cache->base,
+ get_frame_pc (this_frame),
+ cache->bsp);
if (gdbarch_debug >= 1)
fprintf_unfiltered (gdb_stdlog,
- "sigtramp frame id: code 0x%s, stack 0x%s, special 0x%s, next_frame %p\n",
- paddr_nz (this_id->code_addr),
- paddr_nz (this_id->stack_addr),
- paddr_nz (cache->bsp), next_frame);
+ "sigtramp frame id: code %s, stack %s, special %s, this_frame %s\n",
+ paddress (gdbarch, this_id->code_addr),
+ paddress (gdbarch, this_id->stack_addr),
+ paddress (gdbarch, cache->bsp),
+ host_address_to_string (this_frame));
}
-static void
-ia64_sigtramp_frame_prev_register (struct frame_info *next_frame,
- void **this_cache,
- int regnum, int *optimizedp,
- enum lval_type *lvalp, CORE_ADDR *addrp,
- int *realnump, void *valuep)
+static struct value *
+ia64_sigtramp_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
- char dummy_valp[MAX_REGISTER_SIZE];
char buf[MAX_REGISTER_SIZE];
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct ia64_frame_cache *cache =
- ia64_sigtramp_frame_cache (next_frame, this_cache);
+ ia64_sigtramp_frame_cache (this_frame, this_cache);
gdb_assert (regnum >= 0);
if (!target_has_registers)
- error ("No registers.");
-
- *optimizedp = 0;
- *addrp = 0;
- *lvalp = not_lval;
- *realnump = -1;
+ error (_("No registers."));
- /* Rather than check each time if valuep is non-null, supply a dummy buffer
- when valuep is not supplied. */
- if (!valuep)
- valuep = dummy_valp;
-
- memset (valuep, 0, register_size (current_gdbarch, regnum));
-
if (regnum == IA64_IP_REGNUM)
{
CORE_ADDR pc = 0;
if (addr != 0)
{
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
+ read_memory (addr, buf, register_size (gdbarch, IA64_IP_REGNUM));
pc = extract_unsigned_integer (buf, 8);
}
pc &= ~0xf;
- store_unsigned_integer (valuep, 8, pc);
+ return frame_unwind_got_constant (this_frame, regnum, pc);
}
- else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) ||
- (regnum >= V32_REGNUM && regnum <= V127_REGNUM))
+
+ else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM)
+ || (regnum >= V32_REGNUM && regnum <= V127_REGNUM))
{
CORE_ADDR addr = 0;
+
if (regnum >= V32_REGNUM)
regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
addr = cache->saved_regs[regnum];
if (addr != 0)
- {
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, valuep, register_size (current_gdbarch, regnum));
- }
+ return frame_unwind_got_memory (this_frame, regnum, addr);
+
+ return frame_unwind_got_constant (this_frame, regnum, 0);
}
- else
+
+ else /* All other registers not listed above. */
{
- /* All other registers not listed above. */
CORE_ADDR addr = cache->saved_regs[regnum];
+
if (addr != 0)
- {
- *lvalp = lval_memory;
- *addrp = addr;
- read_memory (addr, valuep, register_size (current_gdbarch, regnum));
- }
+ return frame_unwind_got_memory (this_frame, regnum, addr);
+
+ return frame_unwind_got_constant (this_frame, regnum, 0);
}
+}
- if (gdbarch_debug >= 1)
- fprintf_unfiltered (gdb_stdlog,
- "sigtramp prev register <%s> is 0x%s\n",
- (((unsigned) regnum <= IA64_NAT127_REGNUM)
- ? ia64_register_names[regnum] : "r??"),
- paddr_nz (extract_unsigned_integer (valuep, 8)));
+static int
+ia64_sigtramp_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_cache)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (this_frame));
+ if (tdep->pc_in_sigtramp)
+ {
+ CORE_ADDR pc = get_frame_pc (this_frame);
+
+ if (tdep->pc_in_sigtramp (pc))
+ return 1;
+ }
+
+ return 0;
}
static const struct frame_unwind ia64_sigtramp_frame_unwind =
{
SIGTRAMP_FRAME,
ia64_sigtramp_frame_this_id,
- ia64_sigtramp_frame_prev_register
+ ia64_sigtramp_frame_prev_register,
+ NULL,
+ ia64_sigtramp_frame_sniffer
};
-static const struct frame_unwind *
-ia64_sigtramp_frame_sniffer (struct frame_info *next_frame)
-{
- char *name;
- CORE_ADDR pc = frame_pc_unwind (next_frame);
-
- find_pc_partial_function (pc, &name, NULL, NULL);
- if (legacy_pc_in_sigtramp (pc, name))
- return &ia64_sigtramp_frame_unwind;
-
- return NULL;
-}
\f
static CORE_ADDR
-ia64_frame_base_address (struct frame_info *next_frame, void **this_cache)
+ia64_frame_base_address (struct frame_info *this_frame, void **this_cache)
{
- struct ia64_frame_cache *cache =
- ia64_frame_cache (next_frame, this_cache);
+ struct ia64_frame_cache *cache = ia64_frame_cache (this_frame, this_cache);
return cache->base;
}
{
int regnum = ia64_uw2gdb_regnum (uw_regnum);
unw_word_t bsp, sof, sol, cfm, psr, ip;
- struct frame_info *next_frame = arg;
+ struct frame_info *this_frame = arg;
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
long new_sof, old_sof;
char buf[MAX_REGISTER_SIZE];
- if (write)
+ /* We never call any libunwind routines that need to write registers. */
+ gdb_assert (!write);
+
+ switch (uw_regnum)
{
- if (regnum < 0)
- /* ignore writes to pseudo-registers such as UNW_IA64_PROC_STARTI. */
- return 0;
-
- switch (uw_regnum)
- {
- case UNW_REG_IP:
- ia64_write_pc (*val, inferior_ptid);
- break;
+ case UNW_REG_IP:
+ /* Libunwind expects to see the pc value which means the slot number
+ from the psr must be merged with the ip word address. */
+ get_frame_register (this_frame, IA64_IP_REGNUM, buf);
+ ip = extract_unsigned_integer (buf, 8);
+ get_frame_register (this_frame, IA64_PSR_REGNUM, buf);
+ psr = extract_unsigned_integer (buf, 8);
+ *val = ip | ((psr >> 41) & 0x3);
+ break;
+
+ case UNW_IA64_AR_BSP:
+ /* Libunwind expects to see the beginning of the current register
+ frame so we must account for the fact that ptrace() will return a value
+ for bsp that points *after* the current register frame. */
+ get_frame_register (this_frame, IA64_BSP_REGNUM, buf);
+ bsp = extract_unsigned_integer (buf, 8);
+ get_frame_register (this_frame, IA64_CFM_REGNUM, buf);
+ cfm = extract_unsigned_integer (buf, 8);
+ sof = (cfm & 0x7f);
+ *val = ia64_rse_skip_regs (bsp, -sof);
+ break;
- case UNW_IA64_AR_BSPSTORE:
- write_register (IA64_BSP_REGNUM, *val);
- break;
-
- case UNW_IA64_AR_BSP:
- case UNW_IA64_BSP:
- /* Account for the fact that ptrace() expects bsp to point
- after the current register frame. */
- cfm = read_register (IA64_CFM_REGNUM);
- sof = (cfm & 0x7f);
- bsp = ia64_rse_skip_regs (*val, sof);
- write_register (IA64_BSP_REGNUM, bsp);
- break;
-
- case UNW_IA64_CFM:
- /* If we change CFM, we need to adjust ptrace's notion of
- bsp accordingly, so that the real bsp remains
- unchanged. */
- bsp = read_register (IA64_BSP_REGNUM);
- cfm = read_register (IA64_CFM_REGNUM);
- old_sof = (cfm & 0x7f);
- new_sof = (*val & 0x7f);
- if (old_sof != new_sof)
- {
- bsp = ia64_rse_skip_regs (bsp, -old_sof + new_sof);
- write_register (IA64_BSP_REGNUM, bsp);
- }
- write_register (IA64_CFM_REGNUM, *val);
- break;
-
- default:
- write_register (regnum, *val);
- break;
- }
- if (gdbarch_debug >= 1)
- fprintf_unfiltered (gdb_stdlog,
- " access_reg: to cache: %4s=0x%s\n",
- (((unsigned) regnum <= IA64_NAT127_REGNUM)
- ? ia64_register_names[regnum] : "r??"),
- paddr_nz (*val));
+ case UNW_IA64_AR_BSPSTORE:
+ /* Libunwind wants bspstore to be after the current register frame.
+ This is what ptrace() and gdb treats as the regular bsp value. */
+ get_frame_register (this_frame, IA64_BSP_REGNUM, buf);
+ *val = extract_unsigned_integer (buf, 8);
+ break;
+
+ default:
+ /* For all other registers, just unwind the value directly. */
+ get_frame_register (this_frame, regnum, buf);
+ *val = extract_unsigned_integer (buf, 8);
+ break;
}
- else
+
+ if (gdbarch_debug >= 1)
+ fprintf_unfiltered (gdb_stdlog,
+ " access_reg: from cache: %4s=%s\n",
+ (((unsigned) regnum <= IA64_NAT127_REGNUM)
+ ? ia64_register_names[regnum] : "r??"),
+ paddress (*val));
+ return 0;
+}
+
+/* Libunwind callback accessor function for floating-point registers. */
+static int
+ia64_access_fpreg (unw_addr_space_t as, unw_regnum_t uw_regnum, unw_fpreg_t *val,
+ int write, void *arg)
+{
+ int regnum = ia64_uw2gdb_regnum (uw_regnum);
+ struct frame_info *this_frame = arg;
+
+ /* We never call any libunwind routines that need to write registers. */
+ gdb_assert (!write);
+
+ get_frame_register (this_frame, regnum, (char *) val);
+
+ return 0;
+}
+
+/* Libunwind callback accessor function for top-level rse registers. */
+static int
+ia64_access_rse_reg (unw_addr_space_t as, unw_regnum_t uw_regnum, unw_word_t *val,
+ int write, void *arg)
+{
+ int regnum = ia64_uw2gdb_regnum (uw_regnum);
+ unw_word_t bsp, sof, sol, cfm, psr, ip;
+ struct regcache *regcache = arg;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ long new_sof, old_sof;
+ char buf[MAX_REGISTER_SIZE];
+
+ /* We never call any libunwind routines that need to write registers. */
+ gdb_assert (!write);
+
+ switch (uw_regnum)
{
- switch (uw_regnum)
- {
- case UNW_REG_IP:
- /* Libunwind expects to see the pc value which means the slot number
- from the psr must be merged with the ip word address. */
- frame_unwind_register (next_frame, IA64_IP_REGNUM, buf);
- ip = extract_unsigned_integer (buf, 8);
- frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
- psr = extract_unsigned_integer (buf, 8);
- *val = ip | ((psr >> 41) & 0x3);
- break;
+ case UNW_REG_IP:
+ /* Libunwind expects to see the pc value which means the slot number
+ from the psr must be merged with the ip word address. */
+ regcache_cooked_read (regcache, IA64_IP_REGNUM, buf);
+ ip = extract_unsigned_integer (buf, 8);
+ regcache_cooked_read (regcache, IA64_PSR_REGNUM, buf);
+ psr = extract_unsigned_integer (buf, 8);
+ *val = ip | ((psr >> 41) & 0x3);
+ break;
- case UNW_IA64_AR_BSP:
- /* Libunwind expects to see the beginning of the current register
- frame so we must account for the fact that ptrace() will return a value
- for bsp that points *after* the current register frame. */
- frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
- bsp = extract_unsigned_integer (buf, 8);
- frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
- cfm = extract_unsigned_integer (buf, 8);
- sof = (cfm & 0x7f);
- *val = ia64_rse_skip_regs (bsp, -sof);
- break;
+ case UNW_IA64_AR_BSP:
+ /* Libunwind expects to see the beginning of the current register
+ frame so we must account for the fact that ptrace() will return a value
+ for bsp that points *after* the current register frame. */
+ regcache_cooked_read (regcache, IA64_BSP_REGNUM, buf);
+ bsp = extract_unsigned_integer (buf, 8);
+ regcache_cooked_read (regcache, IA64_CFM_REGNUM, buf);
+ cfm = extract_unsigned_integer (buf, 8);
+ sof = (cfm & 0x7f);
+ *val = ia64_rse_skip_regs (bsp, -sof);
+ break;
- case UNW_IA64_AR_BSPSTORE:
- /* Libunwind wants bspstore to be after the current register frame.
- This is what ptrace() and gdb treats as the regular bsp value. */
- frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
- *val = extract_unsigned_integer (buf, 8);
- break;
+ case UNW_IA64_AR_BSPSTORE:
+ /* Libunwind wants bspstore to be after the current register frame.
+ This is what ptrace() and gdb treats as the regular bsp value. */
+ regcache_cooked_read (regcache, IA64_BSP_REGNUM, buf);
+ *val = extract_unsigned_integer (buf, 8);
+ break;
- default:
- /* For all other registers, just unwind the value directly. */
- frame_unwind_register (next_frame, regnum, buf);
- *val = extract_unsigned_integer (buf, 8);
- break;
- }
-
- if (gdbarch_debug >= 1)
- fprintf_unfiltered (gdb_stdlog,
- " access_reg: from cache: %4s=0x%s\n",
- (((unsigned) regnum <= IA64_NAT127_REGNUM)
- ? ia64_register_names[regnum] : "r??"),
- paddr_nz (*val));
+ default:
+ /* For all other registers, just unwind the value directly. */
+ regcache_cooked_read (regcache, regnum, buf);
+ *val = extract_unsigned_integer (buf, 8);
+ break;
}
+
+ if (gdbarch_debug >= 1)
+ fprintf_unfiltered (gdb_stdlog,
+ " access_rse_reg: from cache: %4s=%s\n",
+ (((unsigned) regnum <= IA64_NAT127_REGNUM)
+ ? ia64_register_names[regnum] : "r??"),
+ paddress (gdbarch, *val));
+
return 0;
}
-/* Libunwind callback accessor function for floating-point registers. */
+/* Libunwind callback accessor function for top-level fp registers. */
static int
-ia64_access_fpreg (unw_addr_space_t as, unw_regnum_t uw_regnum, unw_fpreg_t *val,
- int write, void *arg)
+ia64_access_rse_fpreg (unw_addr_space_t as, unw_regnum_t uw_regnum,
+ unw_fpreg_t *val, int write, void *arg)
{
int regnum = ia64_uw2gdb_regnum (uw_regnum);
+ struct regcache *regcache = arg;
- if (write)
- regcache_cooked_write (current_regcache, regnum, (char *) val);
- else
- regcache_cooked_read (current_regcache, regnum, (char *) val);
+ /* We never call any libunwind routines that need to write registers. */
+ gdb_assert (!write);
+
+ regcache_cooked_read (regcache, regnum, (char *) val);
+
return 0;
}
unw_word_t addr, unw_word_t *val,
int write, void *arg)
{
+ if (addr - KERNEL_START < ktab_size)
+ {
+ unw_word_t *laddr = (unw_word_t*) ((char *) ktab
+ + (addr - KERNEL_START));
+
+ if (write)
+ *laddr = *val;
+ else
+ *val = *laddr;
+ return 0;
+ }
+
/* XXX do we need to normalize byte-order here? */
if (write)
return target_write_memory (addr, (char *) val, sizeof (unw_word_t));
}
/* Call low-level function to access the kernel unwind table. */
-static int
-getunwind_table (void *buf, size_t len)
+static LONGEST
+getunwind_table (gdb_byte **buf_p)
{
LONGEST x;
- x = target_read_partial (¤t_target, TARGET_OBJECT_UNWIND_TABLE, NULL,
- buf, 0, len);
- return (int)x;
+ /* FIXME drow/2005-09-10: This code used to call
+ ia64_linux_xfer_unwind_table directly to fetch the unwind table
+ for the currently running ia64-linux kernel. That data should
+ come from the core file and be accessed via the auxv vector; if
+ we want to preserve fall back to the running kernel's table, then
+ we should find a way to override the corefile layer's
+ xfer_partial method. */
+
+ x = target_read_alloc (¤t_target, TARGET_OBJECT_UNWIND_TABLE,
+ NULL, buf_p);
+
+ return x;
}
-
+
/* Get the kernel unwind table. */
static int
get_kernel_table (unw_word_t ip, unw_dyn_info_t *di)
{
- size_t size;
- struct ia64_table_entry
- {
- uint64_t start_offset;
- uint64_t end_offset;
- uint64_t info_offset;
- };
- static struct ia64_table_entry *ktab = NULL, *etab;
+ static struct ia64_table_entry *etab;
- if (!ktab)
+ if (!ktab)
{
- size = getunwind_table (NULL, 0);
- if ((int)size < 0)
+ gdb_byte *ktab_buf;
+ LONGEST size;
+
+ size = getunwind_table (&ktab_buf);
+ if (size <= 0)
return -UNW_ENOINFO;
- ktab = xmalloc (size);
- getunwind_table (ktab, size);
-
- /* Determine length of kernel's unwind table and relocate
- it's entries. */
+
+ ktab = (struct ia64_table_entry *) ktab_buf;
+ ktab_size = size;
+
for (etab = ktab; etab->start_offset; ++etab)
- etab->info_offset += (uint64_t) ktab;
+ etab->info_offset += KERNEL_START;
}
if (ip < ktab[0].start_offset || ip >= etab[-1].end_offset)
if (gdbarch_debug >= 1)
fprintf_unfiltered (gdb_stdlog, "get_kernel_table: found table `%s': "
- "segbase=0x%s, length=%s, gp=0x%s\n",
+ "segbase=%s, length=%s, gp=%s\n",
(char *) di->u.ti.name_ptr,
- paddr_nz (di->u.ti.segbase),
- paddr_u (di->u.ti.table_len),
- paddr_nz (di->gp));
+ hex_string (di->u.ti.segbase),
+ pulongest (di->u.ti.table_len),
+ hex_string (di->gp));
return 0;
}
}
}
- if (!p_text || !p_unwind
- /* Verify that the segment that contains the IP also contains
- the static unwind table. If not, we are dealing with
- runtime-generated code, for which we have no info here. */
- || (p_unwind->p_vaddr - p_text->p_vaddr) >= p_text->p_memsz)
+ if (!p_text || !p_unwind)
return -UNW_ENOINFO;
+ /* Verify that the segment that contains the IP also contains
+ the static unwind table. If not, we may be in the Linux kernel's
+ DSO gate page in which case the unwind table is another segment.
+ Otherwise, we are dealing with runtime-generated code, for which we
+ have no info here. */
segbase = p_text->p_vaddr + load_base;
- dip->start_ip = segbase;
+ if ((p_unwind->p_vaddr - p_text->p_vaddr) >= p_text->p_memsz)
+ {
+ int ok = 0;
+ for (i = 0; i < ehdr->e_phnum; ++i)
+ {
+ if (phdr[i].p_type == PT_LOAD
+ && (p_unwind->p_vaddr - phdr[i].p_vaddr) < phdr[i].p_memsz)
+ {
+ ok = 1;
+ /* Get the segbase from the section containing the
+ libunwind table. */
+ segbase = phdr[i].p_vaddr + load_base;
+ }
+ }
+ if (!ok)
+ return -UNW_ENOINFO;
+ }
+
+ dip->start_ip = p_text->p_vaddr + load_base;
dip->end_ip = dip->start_ip + p_text->p_memsz;
- dip->gp = FIND_GLOBAL_POINTER (ip);
+ dip->gp = ia64_find_global_pointer (ip);
dip->format = UNW_INFO_FORMAT_REMOTE_TABLE;
dip->u.rti.name_ptr = (unw_word_t) bfd_get_filename (bfd);
dip->u.rti.segbase = segbase;
return -UNW_ENOINFO;
if (gdbarch_debug >= 1)
- fprintf_unfiltered (gdb_stdlog, "ia64_find_proc_info_x: 0x%s -> "
- "(name=`%s',segbase=0x%s,start=0x%s,end=0x%s,gp=0x%s,"
- "length=%s,data=0x%s)\n",
- paddr_nz (ip), (char *)di.u.ti.name_ptr,
- paddr_nz (di.u.ti.segbase),
- paddr_nz (di.start_ip), paddr_nz (di.end_ip),
- paddr_nz (di.gp),
- paddr_u (di.u.ti.table_len),
- paddr_nz ((CORE_ADDR)di.u.ti.table_data));
+ fprintf_unfiltered (gdb_stdlog, "ia64_find_proc_info_x: %s -> "
+ "(name=`%s',segbase=%s,start=%s,end=%s,gp=%s,"
+ "length=%s,data=%s)\n",
+ hex_string (ip), (char *)di.u.ti.name_ptr,
+ hex_string (di.u.ti.segbase),
+ hex_string (di.start_ip), hex_string (di.end_ip),
+ hex_string (di.gp),
+ pulongest (di.u.ti.table_len),
+ hex_string ((CORE_ADDR)di.u.ti.table_data));
}
else
{
return ret;
if (gdbarch_debug >= 1)
- fprintf_unfiltered (gdb_stdlog, "ia64_find_proc_info_x: 0x%s -> "
- "(name=`%s',segbase=0x%s,start=0x%s,end=0x%s,gp=0x%s,"
- "length=%s,data=0x%s)\n",
- paddr_nz (ip), (char *)di.u.rti.name_ptr,
- paddr_nz (di.u.rti.segbase),
- paddr_nz (di.start_ip), paddr_nz (di.end_ip),
- paddr_nz (di.gp),
- paddr_u (di.u.rti.table_len),
- paddr_nz (di.u.rti.table_data));
+ fprintf_unfiltered (gdb_stdlog, "ia64_find_proc_info_x: %s -> "
+ "(name=`%s',segbase=%s,start=%s,end=%s,gp=%s,"
+ "length=%s,data=%s)\n",
+ hex_string (ip), (char *)di.u.rti.name_ptr,
+ hex_string (di.u.rti.segbase),
+ hex_string (di.start_ip), hex_string (di.end_ip),
+ hex_string (di.gp),
+ pulongest (di.u.rti.table_len),
+ hex_string (di.u.rti.table_data));
}
ret = libunwind_search_unwind_table (&as, ip, &di, pi, need_unwind_info,
void *buf = NULL;
text_sec = objfile->sections + SECT_OFF_TEXT (objfile);
- ip = text_sec->addr;
+ ip = obj_section_addr (text_sec);
ret = ia64_find_unwind_table (objfile, ip, &di, &buf);
if (ret >= 0)
{
if (gdbarch_debug >= 1)
fprintf_unfiltered (gdb_stdlog,
"dynamic unwind table in objfile %s "
- "at 0x%s (gp=0x%s)\n",
+ "at %s (gp=%s)\n",
bfd_get_filename (objfile->obfd),
- paddr_nz (addr), paddr_nz (di.gp));
+ hex_string (addr), hex_string (di.gp));
*dilap = addr;
return 0;
}
/* Frame interface functions for libunwind. */
static void
-ia64_libunwind_frame_this_id (struct frame_info *next_frame, void **this_cache,
- struct frame_id *this_id)
+ia64_libunwind_frame_this_id (struct frame_info *this_frame, void **this_cache,
+ struct frame_id *this_id)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct frame_id id;
char buf[8];
CORE_ADDR bsp;
- struct frame_id id;
- libunwind_frame_this_id (next_frame, this_cache, &id);
- /* We must add the bsp as the special address for frame comparison purposes. */
- frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ libunwind_frame_this_id (this_frame, this_cache, &id);
+ if (frame_id_eq (id, null_frame_id))
+ {
+ (*this_id) = null_frame_id;
+ return;
+ }
+
+ /* We must add the bsp as the special address for frame comparison
+ purposes. */
+ get_frame_register (this_frame, IA64_BSP_REGNUM, buf);
bsp = extract_unsigned_integer (buf, 8);
(*this_id) = frame_id_build_special (id.stack_addr, id.code_addr, bsp);
if (gdbarch_debug >= 1)
fprintf_unfiltered (gdb_stdlog,
- "libunwind frame id: code 0x%s, stack 0x%s, special 0x%s, next_frame %p\n",
- paddr_nz (id.code_addr), paddr_nz (id.stack_addr),
- paddr_nz (bsp), next_frame);
+ "libunwind frame id: code %s, stack %s, special %s, this_frame %s\n",
+ paddress (gdbarch, id.code_addr),
+ paddress (gdbarch, id.stack_addr),
+ paddress (gdbarch, bsp),
+ host_address_to_string (this_frame));
}
-static void
-ia64_libunwind_frame_prev_register (struct frame_info *next_frame,
- void **this_cache,
- int regnum, int *optimizedp,
- enum lval_type *lvalp, CORE_ADDR *addrp,
- int *realnump, void *valuep)
+static struct value *
+ia64_libunwind_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
{
int reg = regnum;
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct value *val;
if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
reg = IA64_PR_REGNUM;
reg = IA64_UNAT_REGNUM;
/* Let libunwind do most of the work. */
- libunwind_frame_prev_register (next_frame, this_cache, reg,
- optimizedp, lvalp, addrp, realnump, valuep);
-
- /* No more to do if the value is not supposed to be supplied. */
- if (!valuep)
- return;
+ val = libunwind_frame_prev_register (this_frame, this_cache, reg);
if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
{
/* Fetch predicate register rename base from current frame
marker for this frame. */
- frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
+ get_frame_register (this_frame, IA64_CFM_REGNUM, buf);
cfm = extract_unsigned_integer (buf, 8);
rrb_pr = (cfm >> 32) & 0x3f;
/* Adjust the register number to account for register rotation. */
- regnum = VP16_REGNUM
- + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
+ regnum = VP16_REGNUM + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
}
- prN_val = extract_bit_field ((unsigned char *) valuep,
+ prN_val = extract_bit_field (value_contents_all (val),
regnum - VP0_REGNUM, 1);
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), prN_val);
+ return frame_unwind_got_constant (this_frame, regnum, prN_val);
}
+
else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
{
ULONGEST unatN_val;
- unatN_val = extract_bit_field ((unsigned char *) valuep,
- regnum - IA64_NAT0_REGNUM, 1);
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
- unatN_val);
+ unatN_val = extract_bit_field (value_contents_all (val),
+ regnum - IA64_NAT0_REGNUM, 1);
+ return frame_unwind_got_constant (this_frame, regnum, unatN_val);
}
+
else if (regnum == IA64_BSP_REGNUM)
{
- char cfm_valuep[MAX_REGISTER_SIZE];
- int cfm_optim;
- int cfm_realnum;
- enum lval_type cfm_lval;
- CORE_ADDR cfm_addr;
- CORE_ADDR bsp, prev_cfm, prev_bsp;
-
- /* We want to calculate the previous bsp as the end of the previous register stack frame.
- This corresponds to what the hardware bsp register will be if we pop the frame
- back which is why we might have been called. We know that libunwind will pass us back
- the beginning of the current frame so we should just add sof to it. */
- prev_bsp = extract_unsigned_integer (valuep, 8);
- libunwind_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
- &cfm_optim, &cfm_lval, &cfm_addr, &cfm_realnum, cfm_valuep);
- prev_cfm = extract_unsigned_integer (cfm_valuep, 8);
+ struct value *cfm_val;
+ CORE_ADDR prev_bsp, prev_cfm;
+
+ /* We want to calculate the previous bsp as the end of the previous
+ register stack frame. This corresponds to what the hardware bsp
+ register will be if we pop the frame back which is why we might
+ have been called. We know that libunwind will pass us back the
+ beginning of the current frame so we should just add sof to it. */
+ prev_bsp = extract_unsigned_integer (value_contents_all (val), 8);
+ cfm_val = libunwind_frame_prev_register (this_frame, this_cache,
+ IA64_CFM_REGNUM);
+ prev_cfm = extract_unsigned_integer (value_contents_all (cfm_val), 8);
prev_bsp = rse_address_add (prev_bsp, (prev_cfm & 0x7f));
- store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
- prev_bsp);
+ return frame_unwind_got_constant (this_frame, regnum, prev_bsp);
}
+ else
+ return val;
+}
- if (gdbarch_debug >= 1)
- fprintf_unfiltered (gdb_stdlog,
- "libunwind prev register <%s> is 0x%s\n",
- (((unsigned) regnum <= IA64_NAT127_REGNUM)
- ? ia64_register_names[regnum] : "r??"),
- paddr_nz (extract_unsigned_integer (valuep, 8)));
+static int
+ia64_libunwind_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_cache)
+{
+ if (libunwind_is_initialized ()
+ && libunwind_frame_sniffer (self, this_frame, this_cache))
+ return 1;
+
+ return 0;
}
static const struct frame_unwind ia64_libunwind_frame_unwind =
{
NORMAL_FRAME,
ia64_libunwind_frame_this_id,
- ia64_libunwind_frame_prev_register
+ ia64_libunwind_frame_prev_register,
+ NULL,
+ ia64_libunwind_frame_sniffer,
+ libunwind_frame_dealloc_cache
};
-static const struct frame_unwind *
-ia64_libunwind_frame_sniffer (struct frame_info *next_frame)
+static void
+ia64_libunwind_sigtramp_frame_this_id (struct frame_info *this_frame,
+ void **this_cache,
+ struct frame_id *this_id)
{
- if (libunwind_is_initialized () && libunwind_frame_sniffer (next_frame))
- return &ia64_libunwind_frame_unwind;
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ char buf[8];
+ CORE_ADDR bsp;
+ struct frame_id id;
+ CORE_ADDR prev_ip;
+
+ libunwind_frame_this_id (this_frame, this_cache, &id);
+ if (frame_id_eq (id, null_frame_id))
+ {
+ (*this_id) = null_frame_id;
+ return;
+ }
+
+ /* We must add the bsp as the special address for frame comparison
+ purposes. */
+ get_frame_register (this_frame, IA64_BSP_REGNUM, buf);
+ bsp = extract_unsigned_integer (buf, 8);
- return NULL;
+ /* For a sigtramp frame, we don't make the check for previous ip being 0. */
+ (*this_id) = frame_id_build_special (id.stack_addr, id.code_addr, bsp);
+
+ if (gdbarch_debug >= 1)
+ fprintf_unfiltered (gdb_stdlog,
+ "libunwind sigtramp frame id: code %s, stack %s, special %s, this_frame %s\n",
+ paddress (gdbarch, id.code_addr),
+ paddress (gdbarch, id.stack_addr),
+ paddress (gdbarch, bsp),
+ host_address_to_string (this_frame));
}
+static struct value *
+ia64_libunwind_sigtramp_frame_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
+{
+ struct value *prev_ip_val;
+ CORE_ADDR prev_ip;
+
+ /* If the previous frame pc value is 0, then we want to use the SIGCONTEXT
+ method of getting previous registers. */
+ prev_ip_val = libunwind_frame_prev_register (this_frame, this_cache,
+ IA64_IP_REGNUM);
+ prev_ip = extract_unsigned_integer (value_contents_all (prev_ip_val), 8);
+
+ if (prev_ip == 0)
+ {
+ void *tmp_cache = NULL;
+ return ia64_sigtramp_frame_prev_register (this_frame, &tmp_cache,
+ regnum);
+ }
+ else
+ return ia64_libunwind_frame_prev_register (this_frame, this_cache, regnum);
+}
+
+static int
+ia64_libunwind_sigtramp_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_cache)
+{
+ if (libunwind_is_initialized ())
+ {
+ if (libunwind_sigtramp_frame_sniffer (self, this_frame, this_cache))
+ return 1;
+ return 0;
+ }
+ else
+ return ia64_sigtramp_frame_sniffer (self, this_frame, this_cache);
+}
+
+static const struct frame_unwind ia64_libunwind_sigtramp_frame_unwind =
+{
+ SIGTRAMP_FRAME,
+ ia64_libunwind_sigtramp_frame_this_id,
+ ia64_libunwind_sigtramp_frame_prev_register,
+ NULL,
+ ia64_libunwind_sigtramp_frame_sniffer
+};
+
/* Set of libunwind callback acccessor functions. */
static unw_accessors_t ia64_unw_accessors =
{
/* get_proc_name */
};
+/* Set of special libunwind callback acccessor functions specific for accessing
+ the rse registers. At the top of the stack, we want libunwind to figure out
+ how to read r32 - r127. Though usually they are found sequentially in memory
+ starting from $bof, this is not always true. */
+static unw_accessors_t ia64_unw_rse_accessors =
+{
+ ia64_find_proc_info_x,
+ ia64_put_unwind_info,
+ ia64_get_dyn_info_list,
+ ia64_access_mem,
+ ia64_access_rse_reg,
+ ia64_access_rse_fpreg,
+ /* resume */
+ /* get_proc_name */
+};
+
/* Set of ia64 gdb libunwind-frame callbacks and data for generic libunwind-frame code to use. */
static struct libunwind_descr ia64_libunwind_descr =
{
ia64_uw2gdb_regnum,
ia64_is_fpreg,
&ia64_unw_accessors,
+ &ia64_unw_rse_accessors,
};
#endif /* HAVE_LIBUNWIND_IA64_H */
-/* Should we use DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS instead of
- EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc and TYPE
- is the type (which is known to be struct, union or array). */
-int
-ia64_use_struct_convention (int gcc_p, struct type *type)
+static int
+ia64_use_struct_convention (struct type *type)
{
struct type *float_elt_type;
+ /* Don't use the struct convention for anything but structure,
+ union, or array types. */
+ if (!(TYPE_CODE (type) == TYPE_CODE_STRUCT
+ || TYPE_CODE (type) == TYPE_CODE_UNION
+ || TYPE_CODE (type) == TYPE_CODE_ARRAY))
+ return 0;
+
/* HFAs are structures (or arrays) consisting entirely of floating
point values of the same length. Up to 8 of these are returned
in registers. Don't use the struct convention when this is the
return TYPE_LENGTH (type) > 32;
}
-void
-ia64_extract_return_value (struct type *type, struct regcache *regcache, void *valbuf)
+static void
+ia64_extract_return_value (struct type *type, struct regcache *regcache,
+ gdb_byte *valbuf)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
struct type *float_elt_type;
float_elt_type = is_float_or_hfa_type (type);
while (n-- > 0)
{
regcache_cooked_read (regcache, regnum, from);
- convert_typed_floating (from, builtin_type_ia64_ext,
+ convert_typed_floating (from, ia64_ext_type (gdbarch),
(char *)valbuf + offset, float_elt_type);
offset += TYPE_LENGTH (float_elt_type);
regnum++;
ULONGEST val;
int offset = 0;
int regnum = IA64_GR8_REGNUM;
- int reglen = TYPE_LENGTH (ia64_register_type (NULL, IA64_GR8_REGNUM));
+ int reglen = TYPE_LENGTH (register_type (gdbarch, IA64_GR8_REGNUM));
int n = TYPE_LENGTH (type) / reglen;
int m = TYPE_LENGTH (type) % reglen;
}
}
-CORE_ADDR
-ia64_extract_struct_value_address (struct regcache *regcache)
+static void
+ia64_store_return_value (struct type *type, struct regcache *regcache,
+ const gdb_byte *valbuf)
{
- error ("ia64_extract_struct_value_address called and cannot get struct value address");
- return 0;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ struct type *float_elt_type;
+
+ float_elt_type = is_float_or_hfa_type (type);
+ if (float_elt_type != NULL)
+ {
+ char to[MAX_REGISTER_SIZE];
+ int offset = 0;
+ int regnum = IA64_FR8_REGNUM;
+ int n = TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type);
+
+ while (n-- > 0)
+ {
+ convert_typed_floating ((char *)valbuf + offset, float_elt_type,
+ to, ia64_ext_type (gdbarch));
+ regcache_cooked_write (regcache, regnum, to);
+ offset += TYPE_LENGTH (float_elt_type);
+ regnum++;
+ }
+ }
+ else
+ {
+ ULONGEST val;
+ int offset = 0;
+ int regnum = IA64_GR8_REGNUM;
+ int reglen = TYPE_LENGTH (register_type (gdbarch, IA64_GR8_REGNUM));
+ int n = TYPE_LENGTH (type) / reglen;
+ int m = TYPE_LENGTH (type) % reglen;
+
+ while (n-- > 0)
+ {
+ ULONGEST val;
+ memcpy (&val, (char *)valbuf + offset, reglen);
+ regcache_cooked_write_unsigned (regcache, regnum, val);
+ offset += reglen;
+ regnum++;
+ }
+
+ if (m)
+ {
+ memcpy (&val, (char *)valbuf + offset, m);
+ regcache_cooked_write_unsigned (regcache, regnum, val);
+ }
+ }
}
+
+static enum return_value_convention
+ia64_return_value (struct gdbarch *gdbarch, struct type *func_type,
+ struct type *valtype, struct regcache *regcache,
+ gdb_byte *readbuf, const gdb_byte *writebuf)
+{
+ int struct_return = ia64_use_struct_convention (valtype);
+
+ if (writebuf != NULL)
+ {
+ gdb_assert (!struct_return);
+ ia64_store_return_value (valtype, regcache, writebuf);
+ }
+
+ if (readbuf != NULL)
+ {
+ gdb_assert (!struct_return);
+ ia64_extract_return_value (valtype, regcache, readbuf);
+ }
+ if (struct_return)
+ return RETURN_VALUE_STRUCT_CONVENTION;
+ else
+ return RETURN_VALUE_REGISTER_CONVENTION;
+}
static int
is_float_or_hfa_type_recurse (struct type *t, struct type **etp)
d_un.d_ptr value is the global pointer. */
static CORE_ADDR
-generic_elf_find_global_pointer (CORE_ADDR faddr)
+ia64_find_global_pointer (CORE_ADDR faddr)
{
struct obj_section *faddr_sect;
if (osect < faddr_sect->objfile->sections_end)
{
- CORE_ADDR addr;
+ CORE_ADDR addr, endaddr;
+
+ addr = obj_section_addr (osect);
+ endaddr = obj_section_endaddr (osect);
- addr = osect->addr;
- while (addr < osect->endaddr)
+ while (addr < endaddr)
{
int status;
LONGEST tag;
if (osect < faddr_sect->objfile->sections_end)
{
- CORE_ADDR addr;
+ CORE_ADDR addr, endaddr;
- addr = osect->addr;
- while (addr < osect->endaddr)
+ addr = obj_section_addr (osect);
+ endaddr = obj_section_endaddr (osect);
+
+ while (addr < endaddr)
{
int status;
LONGEST faddr2;
stack using the address at fdaptr. */
static CORE_ADDR
-find_func_descr (CORE_ADDR faddr, CORE_ADDR *fdaptr)
+find_func_descr (struct regcache *regcache, CORE_ADDR faddr, CORE_ADDR *fdaptr)
{
CORE_ADDR fdesc;
if (fdesc == 0)
{
- CORE_ADDR global_pointer;
+ ULONGEST global_pointer;
char buf[16];
fdesc = *fdaptr;
*fdaptr += 16;
- global_pointer = FIND_GLOBAL_POINTER (faddr);
+ global_pointer = ia64_find_global_pointer (faddr);
if (global_pointer == 0)
- global_pointer = read_register (IA64_GR1_REGNUM);
+ regcache_cooked_read_unsigned (regcache,
+ IA64_GR1_REGNUM, &global_pointer);
store_unsigned_integer (buf, 8, faddr);
store_unsigned_integer (buf + 8, 8, global_pointer);
if (s && strcmp (s->the_bfd_section->name, ".opd") == 0)
return read_memory_unsigned_integer (addr, 8);
+ /* Normally, functions live inside a section that is executable.
+ So, if ADDR points to a non-executable section, then treat it
+ as a function descriptor and return the target address iff
+ the target address itself points to a section that is executable. */
+ if (s && (s->the_bfd_section->flags & SEC_CODE) == 0)
+ {
+ CORE_ADDR pc = read_memory_unsigned_integer (addr, 8);
+ struct obj_section *pc_section = find_pc_section (pc);
+
+ if (pc_section && (pc_section->the_bfd_section->flags & SEC_CODE))
+ return pc;
+ }
+
+ /* There are also descriptors embedded in vtables. */
+ if (s)
+ {
+ struct minimal_symbol *minsym;
+
+ minsym = lookup_minimal_symbol_by_pc (addr);
+
+ if (minsym && is_vtable_name (SYMBOL_LINKAGE_NAME (minsym)))
+ return read_memory_unsigned_integer (addr, 8);
+ }
+
return addr;
}
int len, argoffset;
int nslots, rseslots, memslots, slotnum, nfuncargs;
int floatreg;
- CORE_ADDR bsp, cfm, pfs, new_bsp, funcdescaddr, pc, global_pointer;
+ ULONGEST bsp, cfm, pfs, new_bsp;
+ CORE_ADDR funcdescaddr, pc, global_pointer;
CORE_ADDR func_addr = find_function_addr (function, NULL);
nslots = 0;
memslots = nslots - rseslots;
/* Allocate a new RSE frame. */
- cfm = read_register (IA64_CFM_REGNUM);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
- bsp = read_register (IA64_BSP_REGNUM);
+ regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
new_bsp = rse_address_add (bsp, rseslots);
- write_register (IA64_BSP_REGNUM, new_bsp);
+ regcache_cooked_write_unsigned (regcache, IA64_BSP_REGNUM, new_bsp);
- pfs = read_register (IA64_PFS_REGNUM);
+ regcache_cooked_read_unsigned (regcache, IA64_PFS_REGNUM, &pfs);
pfs &= 0xc000000000000000LL;
pfs |= (cfm & 0xffffffffffffLL);
- write_register (IA64_PFS_REGNUM, pfs);
+ regcache_cooked_write_unsigned (regcache, IA64_PFS_REGNUM, pfs);
cfm &= 0xc000000000000000LL;
cfm |= rseslots;
- write_register (IA64_CFM_REGNUM, cfm);
+ regcache_cooked_write_unsigned (regcache, IA64_CFM_REGNUM, cfm);
/* We will attempt to find function descriptors in the .opd segment,
but if we can't we'll construct them ourselves. That being the
&& TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC)
{
char val_buf[8];
-
+ ULONGEST faddr = extract_unsigned_integer (value_contents (arg), 8);
store_unsigned_integer (val_buf, 8,
- find_func_descr (extract_unsigned_integer (VALUE_CONTENTS (arg), 8),
+ find_func_descr (regcache, faddr,
&funcdescaddr));
if (slotnum < rseslots)
write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
char val_buf[8];
memset (val_buf, 0, 8);
- memcpy (val_buf, VALUE_CONTENTS (arg) + argoffset, (len > 8) ? 8 : len);
+ memcpy (val_buf, value_contents (arg) + argoffset, (len > 8) ? 8 : len);
if (slotnum < rseslots)
write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
while (len > 0 && floatreg < IA64_FR16_REGNUM)
{
char to[MAX_REGISTER_SIZE];
- convert_typed_floating (VALUE_CONTENTS (arg) + argoffset, float_elt_type,
- to, builtin_type_ia64_ext);
+ convert_typed_floating (value_contents (arg) + argoffset, float_elt_type,
+ to, ia64_ext_type (gdbarch));
regcache_cooked_write (regcache, floatreg, (void *)to);
floatreg++;
argoffset += TYPE_LENGTH (float_elt_type);
regcache_cooked_write_unsigned (regcache, IA64_GR8_REGNUM, (ULONGEST)struct_addr);
}
- global_pointer = FIND_GLOBAL_POINTER (func_addr);
+ global_pointer = ia64_find_global_pointer (func_addr);
if (global_pointer != 0)
- write_register (IA64_GR1_REGNUM, global_pointer);
+ regcache_cooked_write_unsigned (regcache, IA64_GR1_REGNUM, global_pointer);
- write_register (IA64_BR0_REGNUM, bp_addr);
+ regcache_cooked_write_unsigned (regcache, IA64_BR0_REGNUM, bp_addr);
- write_register (sp_regnum, sp);
+ regcache_cooked_write_unsigned (regcache, sp_regnum, sp);
return sp;
}
static struct frame_id
-ia64_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
+ia64_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
{
char buf[8];
CORE_ADDR sp, bsp;
- frame_unwind_register (next_frame, sp_regnum, buf);
+ get_frame_register (this_frame, sp_regnum, buf);
sp = extract_unsigned_integer (buf, 8);
- frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ get_frame_register (this_frame, IA64_BSP_REGNUM, buf);
bsp = extract_unsigned_integer (buf, 8);
if (gdbarch_debug >= 1)
fprintf_unfiltered (gdb_stdlog,
- "dummy frame id: code 0x%s, stack 0x%s, special 0x%s\n",
- paddr_nz (frame_pc_unwind (next_frame)),
- paddr_nz (sp), paddr_nz (bsp));
+ "dummy frame id: code %s, stack %s, special %s\n",
+ paddress (gdbarch, get_frame_pc (this_frame)),
+ paddress (gdbarch, sp), paddress (gdbarch, bsp));
- return frame_id_build_special (sp, frame_pc_unwind (next_frame), bsp);
+ return frame_id_build_special (sp, get_frame_pc (this_frame), bsp);
}
static CORE_ADDR
return pc;
}
-static void
-ia64_store_return_value (struct type *type, struct regcache *regcache, const void *valbuf)
-{
- if (TYPE_CODE (type) == TYPE_CODE_FLT)
- {
- char to[MAX_REGISTER_SIZE];
- convert_typed_floating (valbuf, type, to, builtin_type_ia64_ext);
- regcache_cooked_write (regcache, IA64_FR8_REGNUM, (void *)to);
- target_store_registers (IA64_FR8_REGNUM);
- }
- else
- regcache_cooked_write (regcache, IA64_GR8_REGNUM, valbuf);
-}
-
-static void
-ia64_remote_translate_xfer_address (struct gdbarch *gdbarch,
- struct regcache *regcache,
- CORE_ADDR memaddr, int nr_bytes,
- CORE_ADDR *targ_addr, int *targ_len)
-{
- *targ_addr = memaddr;
- *targ_len = nr_bytes;
-}
-
static int
ia64_print_insn (bfd_vma memaddr, struct disassemble_info *info)
{
tdep = xmalloc (sizeof (struct gdbarch_tdep));
gdbarch = gdbarch_alloc (&info, tdep);
- /* Set the method of obtaining the sigcontext addresses at which
- registers are saved. The method of checking to see if
- native_find_global_pointer is nonzero to indicate that we're
- on AIX is kind of hokey, but I can't think of a better way
- to do it. */
- if (info.osabi == GDB_OSABI_LINUX)
- tdep->sigcontext_register_address = ia64_linux_sigcontext_register_address;
- else
- tdep->sigcontext_register_address = 0;
-
- /* We know that GNU/Linux won't have to resort to the
- native_find_global_pointer hackery. But that's the only one we
- know about so far, so if native_find_global_pointer is set to
- something non-zero, then use it. Otherwise fall back to using
- generic_elf_find_global_pointer. This arrangement should (in
- theory) allow us to cross debug GNU/Linux binaries from an AIX
- machine. */
- if (info.osabi == GDB_OSABI_LINUX)
- tdep->find_global_pointer = generic_elf_find_global_pointer;
- else if (native_find_global_pointer != 0)
- tdep->find_global_pointer = native_find_global_pointer;
- else
- tdep->find_global_pointer = generic_elf_find_global_pointer;
-
- /* Define the ia64 floating-point format to gdb. */
- builtin_type_ia64_ext =
- init_type (TYPE_CODE_FLT, 128 / 8,
- 0, "builtin_type_ia64_ext", NULL);
- TYPE_FLOATFORMAT (builtin_type_ia64_ext) = &floatformat_ia64_ext;
+ tdep->sigcontext_register_address = 0;
+ tdep->pc_in_sigtramp = 0;
/* According to the ia64 specs, instructions that store long double
floats in memory use a long-double format different than that
format for storing long doubles (e.g. HPUX). In the latter case,
the setting of the format may be moved/overridden in an
OS-specific tdep file. */
- set_gdbarch_long_double_format (gdbarch, &floatformat_i387_ext);
+ set_gdbarch_long_double_format (gdbarch, floatformats_i387_ext);
set_gdbarch_short_bit (gdbarch, 16);
set_gdbarch_int_bit (gdbarch, 32);
set_gdbarch_fp0_regnum (gdbarch, IA64_FR0_REGNUM);
set_gdbarch_register_name (gdbarch, ia64_register_name);
- /* FIXME: Following interface should not be needed, however, without it recurse.exp
- gets a number of extra failures. */
- set_gdbarch_deprecated_register_size (gdbarch, 8);
set_gdbarch_register_type (gdbarch, ia64_register_type);
set_gdbarch_pseudo_register_read (gdbarch, ia64_pseudo_register_read);
set_gdbarch_skip_prologue (gdbarch, ia64_skip_prologue);
- set_gdbarch_deprecated_use_struct_convention (gdbarch, ia64_use_struct_convention);
- set_gdbarch_extract_return_value (gdbarch, ia64_extract_return_value);
-
- set_gdbarch_store_return_value (gdbarch, ia64_store_return_value);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, ia64_extract_struct_value_address);
+ set_gdbarch_return_value (gdbarch, ia64_return_value);
set_gdbarch_memory_insert_breakpoint (gdbarch, ia64_memory_insert_breakpoint);
set_gdbarch_memory_remove_breakpoint (gdbarch, ia64_memory_remove_breakpoint);
set_gdbarch_breakpoint_from_pc (gdbarch, ia64_breakpoint_from_pc);
set_gdbarch_read_pc (gdbarch, ia64_read_pc);
- if (info.osabi == GDB_OSABI_LINUX)
- set_gdbarch_write_pc (gdbarch, ia64_linux_write_pc);
- else
- set_gdbarch_write_pc (gdbarch, ia64_write_pc);
+ set_gdbarch_write_pc (gdbarch, ia64_write_pc);
/* Settings for calling functions in the inferior. */
set_gdbarch_push_dummy_call (gdbarch, ia64_push_dummy_call);
set_gdbarch_frame_align (gdbarch, ia64_frame_align);
- set_gdbarch_unwind_dummy_id (gdbarch, ia64_unwind_dummy_id);
+ set_gdbarch_dummy_id (gdbarch, ia64_dummy_id);
set_gdbarch_unwind_pc (gdbarch, ia64_unwind_pc);
- frame_unwind_append_sniffer (gdbarch, ia64_sigtramp_frame_sniffer);
#ifdef HAVE_LIBUNWIND_IA64_H
- frame_unwind_append_sniffer (gdbarch, ia64_libunwind_frame_sniffer);
+ frame_unwind_append_unwinder (gdbarch,
+ &ia64_libunwind_sigtramp_frame_unwind);
+ frame_unwind_append_unwinder (gdbarch, &ia64_libunwind_frame_unwind);
+ frame_unwind_append_unwinder (gdbarch, &ia64_sigtramp_frame_unwind);
libunwind_frame_set_descr (gdbarch, &ia64_libunwind_descr);
+#else
+ frame_unwind_append_unwinder (gdbarch, &ia64_sigtramp_frame_unwind);
#endif
- frame_unwind_append_sniffer (gdbarch, ia64_frame_sniffer);
+ frame_unwind_append_unwinder (gdbarch, &ia64_frame_unwind);
frame_base_set_default (gdbarch, &ia64_frame_base);
/* Settings that should be unnecessary. */
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- set_gdbarch_remote_translate_xfer_address (
- gdbarch, ia64_remote_translate_xfer_address);
-
set_gdbarch_print_insn (gdbarch, ia64_print_insn);
set_gdbarch_convert_from_func_ptr_addr (gdbarch, ia64_convert_from_func_ptr_addr);
+ /* The virtual table contains 16-byte descriptors, not pointers to
+ descriptors. */
+ set_gdbarch_vtable_function_descriptors (gdbarch, 1);
+
+ /* Hook in ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
return gdbarch;
}
void
_initialize_ia64_tdep (void)
{
- register_gdbarch_init (bfd_arch_ia64, ia64_gdbarch_init);
+ gdbarch_register (bfd_arch_ia64, ia64_gdbarch_init, NULL);
}
projects / deliverable / binutils-gdb.git / blobdiff