/* Target-dependent code for the HP PA-RISC architecture.
- Copyright (C) 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright (C) 1986-2015 Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
#include "regcache.h"
#include "completer.h"
#include "osabi.h"
-#include "gdb_assert.h"
#include "arch-utils.h"
-/* For argument passing to the inferior */
+/* For argument passing to the inferior. */
#include "symtab.h"
#include "dis-asm.h"
#include "trad-frame.h"
static const int hppa32_num_regs = 128;
static const int hppa64_num_regs = 96;
+/* We use the objfile->obj_private pointer for two things:
+ * 1. An unwind table;
+ *
+ * 2. A pointer to any associated shared library object.
+ *
+ * #defines are used to help refer to these objects.
+ */
+
+/* Info about the unwind table associated with an object file.
+ * This is hung off of the "objfile->obj_private" pointer, and
+ * is allocated in the objfile's psymbol obstack. This allows
+ * us to have unique unwind info for each executable and shared
+ * library that we are debugging.
+ */
+struct hppa_unwind_info
+ {
+ struct unwind_table_entry *table; /* Pointer to unwind info */
+ struct unwind_table_entry *cache; /* Pointer to last entry we found */
+ int last; /* Index of last entry */
+ };
+
+struct hppa_objfile_private
+ {
+ struct hppa_unwind_info *unwind_info; /* a pointer */
+ struct so_list *so_info; /* a pointer */
+ CORE_ADDR dp;
+
+ int dummy_call_sequence_reg;
+ CORE_ADDR dummy_call_sequence_addr;
+ };
+
/* hppa-specific object data -- unwind and solib info.
TODO/maybe: think about splitting this into two parts; the unwind data is
common to all hppa targets, but is only used in this file; we can register
that separately and make this static. The solib data is probably hpux-
specific, so we can create a separate extern objfile_data that is registered
by hppa-hpux-tdep.c and shared with pa64solib.c and somsolib.c. */
-const struct objfile_data *hppa_objfile_priv_data = NULL;
+static const struct objfile_data *hppa_objfile_priv_data = NULL;
-/* Get at various relevent fields of an instruction word. */
+/* Get at various relevent fields of an instruction word. */
#define MASK_5 0x1f
#define MASK_11 0x7ff
#define MASK_14 0x3fff
#define STUB_UNWIND_ENTRY_SIZE 8
/* Routines to extract various sized constants out of hppa
- instructions. */
+ instructions. */
/* This assumes that no garbage lies outside of the lower bits of
- value. */
+ value. */
-int
+static int
hppa_sign_extend (unsigned val, unsigned bits)
{
return (int) (val >> (bits - 1) ? (-1 << bits) | val : val);
}
-/* For many immediate values the sign bit is the low bit! */
+/* For many immediate values the sign bit is the low bit! */
-int
+static int
hppa_low_hppa_sign_extend (unsigned val, unsigned bits)
{
return (int) ((val & 0x1 ? (-1 << (bits - 1)) : 0) | val >> 1);
}
/* Extract the bits at positions between FROM and TO, using HP's numbering
- (MSB = 0). */
+ (MSB = 0). */
int
hppa_get_field (unsigned word, int from, int to)
return ((word) >> (31 - (to)) & ((1 << ((to) - (from) + 1)) - 1));
}
-/* extract the immediate field from a ld{bhw}s instruction */
+/* Extract the immediate field from a ld{bhw}s instruction. */
int
hppa_extract_5_load (unsigned word)
return hppa_low_hppa_sign_extend (word >> 16 & MASK_5, 5);
}
-/* extract the immediate field from a break instruction */
+/* Extract the immediate field from a break instruction. */
unsigned
hppa_extract_5r_store (unsigned word)
return (word & MASK_5);
}
-/* extract the immediate field from a {sr}sm instruction */
+/* Extract the immediate field from a {sr}sm instruction. */
unsigned
hppa_extract_5R_store (unsigned word)
return (word >> 16 & MASK_5);
}
-/* extract a 14 bit immediate field */
+/* Extract a 14 bit immediate field. */
int
hppa_extract_14 (unsigned word)
return hppa_low_hppa_sign_extend (word & MASK_14, 14);
}
-/* extract a 21 bit constant */
+/* Extract a 21 bit constant. */
int
hppa_extract_21 (unsigned word)
}
/* extract a 17 bit constant from branch instructions, returning the
- 19 bit signed value. */
+ 19 bit signed value. */
int
hppa_extract_17 (unsigned word)
CORE_ADDR
hppa_symbol_address(const char *sym)
{
- struct minimal_symbol *minsym;
+ struct bound_minimal_symbol minsym;
minsym = lookup_minimal_symbol (sym, NULL, NULL);
- if (minsym)
- return SYMBOL_VALUE_ADDRESS (minsym);
+ if (minsym.minsym)
+ return BMSYMBOL_VALUE_ADDRESS (minsym);
else
return (CORE_ADDR)-1;
}
-struct hppa_objfile_private *
+static struct hppa_objfile_private *
hppa_init_objfile_priv_data (struct objfile *objfile)
{
struct hppa_objfile_private *priv;
static int
compare_unwind_entries (const void *arg1, const void *arg2)
{
- const struct unwind_table_entry *a = arg1;
- const struct unwind_table_entry *b = arg2;
+ const struct unwind_table_entry *a = (const struct unwind_table_entry *) arg1;
+ const struct unwind_table_entry *b = (const struct unwind_table_entry *) arg2;
if (a->region_start > b->region_start)
return 1;
static void
internalize_unwinds (struct objfile *objfile, struct unwind_table_entry *table,
- asection *section, unsigned int entries, unsigned int size,
- CORE_ADDR text_offset)
+ asection *section, unsigned int entries,
+ size_t size, CORE_ADDR text_offset)
{
/* We will read the unwind entries into temporary memory, then
fill in the actual unwind table. */
struct gdbarch *gdbarch = get_objfile_arch (objfile);
unsigned long tmp;
unsigned i;
- char *buf = alloca (size);
+ char *buf = (char *) alloca (size);
CORE_ADDR low_text_segment_address;
/* For ELF targets, then unwinds are supposed to
- be segment relative offsets instead of absolute addresses.
+ be segment relative offsets instead of absolute addresses.
Note that when loading a shared library (text_offset != 0) the
unwinds are already relative to the text_offset that will be
table[i].reserved2 = (tmp >> 27) & 0x1;
table[i].Total_frame_size = tmp & 0x7ffffff;
- /* Stub unwinds are handled elsewhere. */
+ /* Stub unwinds are handled elsewhere. */
table[i].stub_unwind.stub_type = 0;
table[i].stub_unwind.padding = 0;
}
read_unwind_info (struct objfile *objfile)
{
asection *unwind_sec, *stub_unwind_sec;
- unsigned unwind_size, stub_unwind_size, total_size;
+ size_t unwind_size, stub_unwind_size, total_size;
unsigned index, unwind_entries;
unsigned stub_entries, total_entries;
CORE_ADDR text_offset;
struct hppa_unwind_info *ui;
struct hppa_objfile_private *obj_private;
- text_offset = ANOFFSET (objfile->section_offsets, 0);
+ text_offset = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile));
ui = (struct hppa_unwind_info *) obstack_alloc (&objfile->objfile_obstack,
sizeof (struct hppa_unwind_info));
/* For reasons unknown the HP PA64 tools generate multiple unwinder
sections in a single executable. So we just iterate over every
section in the BFD looking for unwinder sections intead of trying
- to do a lookup with bfd_get_section_by_name.
+ to do a lookup with bfd_get_section_by_name.
First determine the total size of the unwind tables so that we
can allocate memory in a nice big hunk. */
if (stub_unwind_size > 0)
{
unsigned int i;
- char *buf = alloca (stub_unwind_size);
+ char *buf = (char *) alloca (stub_unwind_size);
/* Read in the stub unwind entries. */
bfd_get_section_contents (objfile->obfd, stub_unwind_sec, buf,
/* Clear out the next unwind entry. */
memset (&ui->table[index], 0, sizeof (struct unwind_table_entry));
- /* Convert offset & size into region_start and region_end.
+ /* Convert offset & size into region_start and region_end.
Stuff away the stub type into "reserved" fields. */
ui->table[index].region_start = bfd_get_32 (objfile->obfd,
(bfd_byte *) buf);
struct hppa_objfile_private *priv;
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, "{ find_unwind_entry 0x%s -> ",
- paddr_nz (pc));
+ fprintf_unfiltered (gdb_stdlog, "{ find_unwind_entry %s -> ",
+ hex_string (pc));
- /* A function at address 0? Not in HP-UX! */
+ /* A function at address 0? Not in HP-UX! */
if (pc == (CORE_ADDR) 0)
{
if (hppa_debug)
{
struct hppa_unwind_info *ui;
ui = NULL;
- priv = objfile_data (objfile, hppa_objfile_priv_data);
+ priv = ((struct hppa_objfile_private *)
+ objfile_data (objfile, hppa_objfile_priv_data));
if (priv)
ui = ((struct hppa_objfile_private *) priv)->unwind_info;
if (!ui)
{
read_unwind_info (objfile);
- priv = objfile_data (objfile, hppa_objfile_priv_data);
+ priv = ((struct hppa_objfile_private *)
+ objfile_data (objfile, hppa_objfile_priv_data));
if (priv == NULL)
error (_("Internal error reading unwind information."));
ui = ((struct hppa_objfile_private *) priv)->unwind_info;
}
- /* First, check the cache */
+ /* First, check the cache. */
if (ui->cache
&& pc >= ui->cache->region_start
&& pc <= ui->cache->region_end)
{
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, "0x%s (cached) }\n",
- paddr_nz ((uintptr_t) ui->cache));
+ fprintf_unfiltered (gdb_stdlog, "%s (cached) }\n",
+ hex_string ((uintptr_t) ui->cache));
return ui->cache;
}
- /* Not in the cache, do a binary search */
+ /* Not in the cache, do a binary search. */
first = 0;
last = ui->last;
{
ui->cache = &ui->table[middle];
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, "0x%s }\n",
- paddr_nz ((uintptr_t) ui->cache));
+ fprintf_unfiltered (gdb_stdlog, "%s }\n",
+ hex_string ((uintptr_t) ui->cache));
return &ui->table[middle];
}
return NULL;
}
-/* The epilogue is defined here as the area either on the `bv' instruction
- itself or an instruction which destroys the function's stack frame.
+/* Implement the stack_frame_destroyed_p gdbarch method.
+
+ The epilogue is defined here as the area either on the `bv' instruction
+ itself or an instruction which destroys the function's stack frame.
We do not assume that the epilogue is at the end of a function as we can
also have return sequences in the middle of a function. */
+
static int
-hppa_in_function_epilogue_p (struct gdbarch *gdbarch, CORE_ADDR pc)
+hppa_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
unsigned long status;
unsigned int inst;
- char buf[4];
- int off;
+ gdb_byte buf[4];
status = target_read_memory (pc, buf, 4);
if (status != 0)
return 0;
- inst = extract_unsigned_integer (buf, 4);
+ inst = extract_unsigned_integer (buf, 4, byte_order);
/* The most common way to perform a stack adjustment ldo X(sp),sp
We are destroying a stack frame if the offset is negative. */
return names[i];
}
+/* Map dwarf DBX register numbers to GDB register numbers. */
static int
hppa64_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
{
- /* r0-r31 and sar map one-to-one. */
- if (reg <= 32)
+ /* The general registers and the sar are the same in both sets. */
+ if (reg >= 0 && reg <= 32)
return reg;
/* fr4-fr31 are mapped from 72 in steps of 2. */
- if (reg >= 72 || reg < 72 + 28 * 2)
+ if (reg >= 72 && reg < 72 + 28 * 2 && !(reg & 1))
return HPPA64_FP4_REGNUM + (reg - 72) / 2;
- error ("Invalid DWARF register num %d.", reg);
return -1;
}
int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
/* Stack base address at which any pass-by-reference parameters are
stored. */
CORE_ADDR struct_end = 0;
for (write_pass = 0; write_pass < 2; write_pass++)
{
CORE_ADDR struct_ptr = 0;
- /* The first parameter goes into sp-36, each stack slot is 4-bytes.
+ /* The first parameter goes into sp-36, each stack slot is 4-bytes.
struct_ptr is adjusted for each argument below, so the first
argument will end up at sp-36. */
CORE_ADDR param_ptr = 32;
struct type *type = check_typedef (value_type (arg));
/* The corresponding parameter that is pushed onto the
stack, and [possibly] passed in a register. */
- char param_val[8];
+ gdb_byte param_val[8];
int param_len;
memset (param_val, 0, sizeof param_val);
if (TYPE_LENGTH (type) > 8)
if (write_pass)
write_memory (struct_end - struct_ptr, value_contents (arg),
TYPE_LENGTH (type));
- store_unsigned_integer (param_val, 4, struct_end - struct_ptr);
+ store_unsigned_integer (param_val, 4, byte_order,
+ struct_end - struct_ptr);
}
else if (TYPE_CODE (type) == TYPE_CODE_INT
|| TYPE_CODE (type) == TYPE_CODE_ENUM)
/* Integer value store, right aligned. "unpack_long"
takes care of any sign-extension problems. */
param_len = align_up (TYPE_LENGTH (type), 4);
- store_unsigned_integer (param_val, param_len,
+ store_unsigned_integer (param_val, param_len, byte_order,
unpack_long (type,
value_contents (arg)));
}
}
/* If a structure has to be returned, set up register 28 to hold its
- address */
+ address. */
if (struct_return)
regcache_cooked_write_unsigned (regcache, 28, struct_addr);
function descriptor and return its address instead. If CODE is not a
function entry address, then just return it unchanged. */
static CORE_ADDR
-hppa64_convert_code_addr_to_fptr (CORE_ADDR code)
+hppa64_convert_code_addr_to_fptr (struct gdbarch *gdbarch, CORE_ADDR code)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct obj_section *sec, *opd;
sec = find_pc_section (code);
addr += 2 * 8)
{
ULONGEST opdaddr;
- char tmp[8];
+ gdb_byte tmp[8];
if (target_read_memory (addr, tmp, sizeof (tmp)))
break;
- opdaddr = extract_unsigned_integer (tmp, sizeof (tmp));
+ opdaddr = extract_unsigned_integer (tmp, sizeof (tmp), byte_order);
if (opdaddr == code)
return addr - 16;
int struct_return, CORE_ADDR struct_addr)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int i, offset = 0;
CORE_ADDR gp;
safely sign-extend them. */
if (len < 8)
{
- arg = value_cast (builtin_type_int64, arg);
+ arg = value_cast (builtin_type (gdbarch)->builtin_int64, arg);
len = 8;
}
}
{
/* "Aggregates larger than 8 bytes are aligned on a
16-byte boundary, possibly leaving an unused argument
- slot, which is filled with garbage. If necessary,
+ slot, which is filled with garbage. If necessary,
they are padded on the right (with garbage), to a
multiple of 8 bytes." */
offset = align_up (offset, 16);
ULONGEST codeptr, fptr;
codeptr = unpack_long (type, value_contents (arg));
- fptr = hppa64_convert_code_addr_to_fptr (codeptr);
- store_unsigned_integer (fptrbuf, TYPE_LENGTH (type), fptr);
+ fptr = hppa64_convert_code_addr_to_fptr (gdbarch, codeptr);
+ store_unsigned_integer (fptrbuf, TYPE_LENGTH (type), byte_order,
+ fptr);
valbuf = fptrbuf;
}
else
/* Handle 32/64-bit struct return conventions. */
static enum return_value_convention
-hppa32_return_value (struct gdbarch *gdbarch, struct type *func_type,
+hppa32_return_value (struct gdbarch *gdbarch, struct value *function,
struct type *type, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
}
static enum return_value_convention
-hppa64_return_value (struct gdbarch *gdbarch, struct type *func_type,
+hppa64_return_value (struct gdbarch *gdbarch, struct value *function,
struct type *type, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
regcache_cooked_write_unsigned (regcache, HPPA_PCOQ_TAIL_REGNUM, pc + 4);
}
-/* return the alignment of a type in bytes. Structures have the maximum
- alignment required by their fields. */
-
-static int
-hppa_alignof (struct type *type)
-{
- int max_align, align, i;
- CHECK_TYPEDEF (type);
- switch (TYPE_CODE (type))
- {
- case TYPE_CODE_PTR:
- case TYPE_CODE_INT:
- case TYPE_CODE_FLT:
- return TYPE_LENGTH (type);
- case TYPE_CODE_ARRAY:
- return hppa_alignof (TYPE_FIELD_TYPE (type, 0));
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- max_align = 1;
- for (i = 0; i < TYPE_NFIELDS (type); i++)
- {
- /* Bit fields have no real alignment. */
- /* if (!TYPE_FIELD_BITPOS (type, i)) */
- if (!TYPE_FIELD_BITSIZE (type, i)) /* elz: this should be bitsize */
- {
- align = hppa_alignof (TYPE_FIELD_TYPE (type, i));
- max_align = max (max_align, align);
- }
- }
- return max_align;
- default:
- return 4;
- }
-}
-
/* For the given instruction (INST), return any adjustment it makes
- to the stack pointer or zero for no adjustment.
+ to the stack pointer or zero for no adjustment.
This only handles instructions commonly found in prologues. */
}
/* Return the register number for a GR which is saved by INST or
- zero it INST does not save a GR. */
+ zero if INST does not save a GR.
-static int
-inst_saves_gr (unsigned long inst)
-{
- /* Does it look like a stw? */
- if ((inst >> 26) == 0x1a || (inst >> 26) == 0x1b
- || (inst >> 26) == 0x1f
- || ((inst >> 26) == 0x1f
- && ((inst >> 6) == 0xa)))
- return hppa_extract_5R_store (inst);
+ Referenced from:
- /* Does it look like a std? */
- if ((inst >> 26) == 0x1c
- || ((inst >> 26) == 0x03
- && ((inst >> 6) & 0xf) == 0xb))
- return hppa_extract_5R_store (inst);
+ parisc 1.1:
+ https://parisc.wiki.kernel.org/images-parisc/6/68/Pa11_acd.pdf
- /* Does it look like a stwm? GCC & HPC may use this in prologues. */
- if ((inst >> 26) == 0x1b)
- return hppa_extract_5R_store (inst);
+ parisc 2.0:
+ https://parisc.wiki.kernel.org/images-parisc/7/73/Parisc2.0.pdf
- /* Does it look like sth or stb? HPC versions 9.0 and later use these
- too. */
- if ((inst >> 26) == 0x19 || (inst >> 26) == 0x18
- || ((inst >> 26) == 0x3
- && (((inst >> 6) & 0xf) == 0x8
- || (inst >> 6) & 0xf) == 0x9))
- return hppa_extract_5R_store (inst);
+ According to Table 6-5 of Chapter 6 (Memory Reference Instructions)
+ on page 106 in parisc 2.0, all instructions for storing values from
+ the general registers are:
- return 0;
+ Store: stb, sth, stw, std (according to Chapter 7, they
+ are only in both "inst >> 26" and "inst >> 6".
+ Store Absolute: stwa, stda (according to Chapter 7, they are only
+ in "inst >> 6".
+ Store Bytes: stby, stdby (according to Chapter 7, they are
+ only in "inst >> 6").
+
+ For (inst >> 26), according to Chapter 7:
+
+ The effective memory reference address is formed by the addition
+ of an immediate displacement to a base value.
+
+ - stb: 0x18, store a byte from a general register.
+
+ - sth: 0x19, store a halfword from a general register.
+
+ - stw: 0x1a, store a word from a general register.
+
+ - stwm: 0x1b, store a word from a general register and perform base
+ register modification (2.0 will still treate it as stw).
+
+ - std: 0x1c, store a doubleword from a general register (2.0 only).
+
+ - stw: 0x1f, store a word from a general register (2.0 only).
+
+ For (inst >> 6) when ((inst >> 26) == 0x03), according to Chapter 7:
+
+ The effective memory reference address is formed by the addition
+ of an index value to a base value specified in the instruction.
+
+ - stb: 0x08, store a byte from a general register (1.1 calls stbs).
+
+ - sth: 0x09, store a halfword from a general register (1.1 calls
+ sths).
+
+ - stw: 0x0a, store a word from a general register (1.1 calls stws).
+
+ - std: 0x0b: store a doubleword from a general register (2.0 only)
+
+ Implement fast byte moves (stores) to unaligned word or doubleword
+ destination.
+
+ - stby: 0x0c, for unaligned word (1.1 calls stbys).
+
+ - stdby: 0x0d for unaligned doubleword (2.0 only).
+
+ Store a word or doubleword using an absolute memory address formed
+ using short or long displacement or indexed
+
+ - stwa: 0x0e, store a word from a general register to an absolute
+ address (1.0 calls stwas).
+
+ - stda: 0x0f, store a doubleword from a general register to an
+ absolute address (2.0 only). */
+
+static int
+inst_saves_gr (unsigned long inst)
+{
+ switch ((inst >> 26) & 0x0f)
+ {
+ case 0x03:
+ switch ((inst >> 6) & 0x0f)
+ {
+ case 0x08:
+ case 0x09:
+ case 0x0a:
+ case 0x0b:
+ case 0x0c:
+ case 0x0d:
+ case 0x0e:
+ case 0x0f:
+ return hppa_extract_5R_store (inst);
+ default:
+ return 0;
+ }
+ case 0x18:
+ case 0x19:
+ case 0x1a:
+ case 0x1b:
+ case 0x1c:
+ /* no 0x1d or 0x1e -- according to parisc 2.0 document */
+ case 0x1f:
+ return hppa_extract_5R_store (inst);
+ default:
+ return 0;
+ }
}
/* Return the register number for a FR which is saved by INST or
static int
inst_saves_fr (unsigned long inst)
{
- /* is this an FSTD ? */
+ /* Is this an FSTD? */
if ((inst & 0xfc00dfc0) == 0x2c001200)
return hppa_extract_5r_store (inst);
if ((inst & 0xfc000002) == 0x70000002)
return hppa_extract_5R_store (inst);
- /* is this an FSTW ? */
+ /* Is this an FSTW? */
if ((inst & 0xfc00df80) == 0x24001200)
return hppa_extract_5r_store (inst);
if ((inst & 0xfc000002) == 0x7c000000)
}
/* Advance PC across any function entry prologue instructions
- to reach some "real" code.
+ to reach some "real" code.
Use information in the unwind table to determine what exactly should
be in the prologue. */
skip_prologue_hard_way (struct gdbarch *gdbarch, CORE_ADDR pc,
int stop_before_branch)
{
- char buf[4];
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ gdb_byte buf[4];
CORE_ADDR orig_pc = pc;
unsigned long inst, stack_remaining, save_gr, save_fr, save_rp, save_sp;
unsigned long args_stored, status, i, restart_gr, restart_fr;
if (!u)
return pc;
- /* If we are not at the beginning of a function, then return now. */
+ /* If we are not at the beginning of a function, then return now. */
if ((pc & ~0x3) != u->region_start)
return pc;
old_stack_remaining = stack_remaining;
status = target_read_memory (pc, buf, 4);
- inst = extract_unsigned_integer (buf, 4);
+ inst = extract_unsigned_integer (buf, 4, byte_order);
/* Yow! */
if (status != 0)
{
pc += 4;
status = target_read_memory (pc, buf, 4);
- inst = extract_unsigned_integer (buf, 4);
+ inst = extract_unsigned_integer (buf, 4, byte_order);
if (status != 0)
return pc;
reg_num = inst_saves_gr (inst);
save_fr &= ~(1 << reg_num);
status = target_read_memory (pc + 4, buf, 4);
- next_inst = extract_unsigned_integer (buf, 4);
+ next_inst = extract_unsigned_integer (buf, 4, byte_order);
/* Yow! */
if (status != 0)
{
pc += 8;
status = target_read_memory (pc, buf, 4);
- inst = extract_unsigned_integer (buf, 4);
+ inst = extract_unsigned_integer (buf, 4, byte_order);
if (status != 0)
return pc;
if ((inst & 0xfc000000) != 0x34000000)
break;
status = target_read_memory (pc + 4, buf, 4);
- next_inst = extract_unsigned_integer (buf, 4);
+ next_inst = extract_unsigned_integer (buf, 4, byte_order);
if (status != 0)
return pc;
reg_num = inst_saves_fr (next_inst);
{
struct symtab_and_line sal;
CORE_ADDR func_addr, func_end;
- struct symbol *f;
/* If we can not find the symbol in the partial symbol table, then
there is no hope we can determine the function's start address
is within the function bounds. In that case we return the end of the
source line. Second is the end of the source line extends beyond the
bounds of the current function. We need to use the slow code to
- examine instructions in that case.
+ examine instructions in that case.
Anything else is simply a bug elsewhere. Fixing it here is absolutely
the wrong thing to do. In fact, it should be entirely possible for this
/* To skip prologues, I use this predicate. Returns either PC itself
if the code at PC does not look like a function prologue; otherwise
- returns an address that (if we're lucky) follows the prologue.
+ returns an address that (if we're lucky) follows the prologue.
hppa_skip_prologue is called by gdb to place a breakpoint in a function.
- It doesn't necessarily skips all the insns in the prologue. In fact
+ It doesn't necessarily skips all the insns in the prologue. In fact
we might not want to skip all the insns because a prologue insn may
appear in the delay slot of the first branch, and we don't want to
skip over the branch in that case. */
static CORE_ADDR
hppa_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
- unsigned long inst;
- int offset;
CORE_ADDR post_prologue_pc;
- char buf[4];
/* See if we can determine the end of the prologue via the symbol table.
If so, then return either PC, or the PC after the prologue, whichever
/* FIXME drow/20070101: Calling gdbarch_addr_bits_remove on the
result of get_frame_address_in_block implies a problem.
The bits should have been removed earlier, before the return
- value of frame_pc_unwind. That might be happening already;
+ value of gdbarch_unwind_pc. That might be happening already;
if it isn't, it should be fixed. Then this call can be
removed. */
pc = gdbarch_addr_bits_remove (get_frame_arch (this_frame), pc);
hppa_frame_cache (struct frame_info *this_frame, void **this_cache)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ int word_size = gdbarch_ptr_bit (gdbarch) / 8;
struct hppa_frame_cache *cache;
long saved_gr_mask;
long saved_fr_mask;
- CORE_ADDR this_sp;
long frame_size;
struct unwind_table_entry *u;
CORE_ADDR prologue_end;
if ((*this_cache) != NULL)
{
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, "base=0x%s (cached) }",
- paddr_nz (((struct hppa_frame_cache *)*this_cache)->base));
- return (*this_cache);
+ fprintf_unfiltered (gdb_stdlog, "base=%s (cached) }",
+ paddress (gdbarch, ((struct hppa_frame_cache *)*this_cache)->base));
+ return (struct hppa_frame_cache *) (*this_cache);
}
cache = FRAME_OBSTACK_ZALLOC (struct hppa_frame_cache);
(*this_cache) = cache;
{
if (hppa_debug)
fprintf_unfiltered (gdb_stdlog, "base=NULL (no unwind entry) }");
- return (*this_cache);
+ return (struct hppa_frame_cache *) (*this_cache);
}
/* Turn the Entry_GR field into a bitmask. */
skip_prologue_using_sal, in case we stepped into a function without
symbol information. hppa_skip_prologue also bounds the returned
pc by the passed in pc, so it will not return a pc in the next
- function.
+ function.
We used to call hppa_skip_prologue to find the end of the prologue,
but if some non-prologue instructions get scheduled into the prologue,
/* We used to use get_frame_func to locate the beginning of the
function to pass to skip_prologue. However, when objects are
compiled without debug symbols, get_frame_func can return the wrong
- function (or 0). We can do better than that by using unwind records.
+ function (or 0). We can do better than that by using unwind records.
This only works if the Region_description of the unwind record
- indicates that it includes the entry point of the function.
+ indicates that it includes the entry point of the function.
HP compilers sometimes generate unwind records for regions that
do not include the entry or exit point of a function. GNU tools
do not do this. */
pc += 4)
{
int reg;
- char buf4[4];
+ gdb_byte buf4[4];
long inst;
if (!safe_frame_unwind_memory (this_frame, pc, buf4, sizeof buf4))
{
- error (_("Cannot read instruction at 0x%s."), paddr_nz (pc));
- return (*this_cache);
+ error (_("Cannot read instruction at %s."),
+ paddress (gdbarch, pc));
+ return (struct hppa_frame_cache *) (*this_cache);
}
- inst = extract_unsigned_integer (buf4, sizeof buf4);
+ inst = extract_unsigned_integer (buf4, sizeof buf4, byte_order);
/* Note the interesting effects of this instruction. */
frame_size += prologue_inst_adjust_sp (inst);
CORE_ADDR offset;
if ((inst >> 26) == 0x1c)
- offset = (inst & 0x1 ? -1 << 13 : 0) | (((inst >> 4) & 0x3ff) << 3);
+ offset = (inst & 0x1 ? -1 << 13 : 0)
+ | (((inst >> 4) & 0x3ff) << 3);
else if ((inst >> 26) == 0x03)
offset = hppa_low_hppa_sign_extend (inst & 0x1f, 5);
else
if (u->Save_SP)
cache->saved_regs[reg].addr = offset;
else
- cache->saved_regs[reg].addr = (u->Total_frame_size << 3) + offset;
+ cache->saved_regs[reg].addr
+ = (u->Total_frame_size << 3) + offset;
}
}
}
}
- /* Quit if we hit any kind of branch the previous iteration. */
+ /* Quit if we hit any kind of branch the previous iteration. */
if (final_iteration)
break;
/* We want to look precisely one instruction beyond the branch
CORE_ADDR fp;
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, " (this_sp=0x%s, pc=0x%s, "
- "prologue_end=0x%s) ",
- paddr_nz (this_sp),
- paddr_nz (get_frame_pc (this_frame)),
- paddr_nz (prologue_end));
+ fprintf_unfiltered (gdb_stdlog, " (this_sp=%s, pc=%s, "
+ "prologue_end=%s) ",
+ paddress (gdbarch, this_sp),
+ paddress (gdbarch, get_frame_pc (this_frame)),
+ paddress (gdbarch, prologue_end));
/* Check to see if a frame pointer is available, and use it for
frame unwinding if it is.
cache->base = fp;
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, " (base=0x%s) [frame pointer]",
- paddr_nz (cache->base));
+ fprintf_unfiltered (gdb_stdlog, " (base=%s) [frame pointer]",
+ paddress (gdbarch, cache->base));
}
else if (u->Save_SP
&& trad_frame_addr_p (cache->saved_regs, HPPA_SP_REGNUM))
/* Both we're expecting the SP to be saved and the SP has been
saved. The entry SP value is saved at this frame's SP
address. */
- cache->base = read_memory_integer
- (this_sp, gdbarch_ptr_bit (gdbarch) / 8);
+ cache->base = read_memory_integer (this_sp, word_size, byte_order);
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, " (base=0x%s) [saved]",
- paddr_nz (cache->base));
+ fprintf_unfiltered (gdb_stdlog, " (base=%s) [saved]",
+ paddress (gdbarch, cache->base));
}
else
{
the SP back. */
cache->base = this_sp - frame_size;
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, " (base=0x%s) [unwind adjust]",
- paddr_nz (cache->base));
+ fprintf_unfiltered (gdb_stdlog, " (base=%s) [unwind adjust]",
+ paddress (gdbarch, cache->base));
}
trad_frame_set_value (cache->saved_regs, HPPA_SP_REGNUM, cache->base);
}
if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, "base=0x%s }",
- paddr_nz (((struct hppa_frame_cache *)*this_cache)->base));
- return (*this_cache);
+ fprintf_unfiltered (gdb_stdlog, "base=%s }",
+ paddress (gdbarch, ((struct hppa_frame_cache *)*this_cache)->base));
+ return (struct hppa_frame_cache *) (*this_cache);
}
static void
{
struct hppa_frame_cache *info = hppa_frame_cache (this_frame, this_cache);
- return hppa_frame_prev_register_helper (this_frame, info->saved_regs, regnum);
+ return hppa_frame_prev_register_helper (this_frame,
+ info->saved_regs, regnum);
}
static int
static const struct frame_unwind hppa_frame_unwind =
{
NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
hppa_frame_this_id,
hppa_frame_prev_register,
NULL,
static struct hppa_frame_cache *
hppa_fallback_frame_cache (struct frame_info *this_frame, void **this_cache)
{
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct hppa_frame_cache *cache;
unsigned int frame_size = 0;
int found_rp = 0;
{
unsigned int insn;
- insn = read_memory_unsigned_integer (pc, 4);
+ insn = read_memory_unsigned_integer (pc, 4, byte_order);
frame_size += prologue_inst_adjust_sp (insn);
/* There are limited ways to store the return pointer into the
hppa_fallback_frame_prev_register (struct frame_info *this_frame,
void **this_cache, int regnum)
{
- struct hppa_frame_cache *info =
- hppa_fallback_frame_cache (this_frame, this_cache);
+ struct hppa_frame_cache *info
+ = hppa_fallback_frame_cache (this_frame, this_cache);
- return hppa_frame_prev_register_helper (this_frame, info->saved_regs, regnum);
+ return hppa_frame_prev_register_helper (this_frame,
+ info->saved_regs, regnum);
}
static const struct frame_unwind hppa_fallback_frame_unwind =
{
NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
hppa_fallback_frame_this_id,
hppa_fallback_frame_prev_register,
NULL,
struct unwind_table_entry *u;
if (*this_cache)
- return *this_cache;
+ return (struct hppa_stub_unwind_cache *) *this_cache;
info = FRAME_OBSTACK_ZALLOC (struct hppa_stub_unwind_cache);
*this_cache = info;
if (info)
*this_id = frame_id_build (info->base, get_frame_func (this_frame));
- else
- *this_id = null_frame_id;
}
static struct value *
if (info == NULL)
error (_("Requesting registers from null frame."));
- return hppa_frame_prev_register_helper (this_frame, info->saved_regs, regnum);
+ return hppa_frame_prev_register_helper (this_frame,
+ info->saved_regs, regnum);
}
static int
if (pc == 0
|| (tdep->in_solib_call_trampoline != NULL
- && tdep->in_solib_call_trampoline (pc, NULL))
+ && tdep->in_solib_call_trampoline (gdbarch, pc))
|| gdbarch_in_solib_return_trampoline (gdbarch, pc, NULL))
return 1;
return 0;
static const struct frame_unwind hppa_stub_frame_unwind = {
NORMAL_FRAME,
+ default_frame_unwind_stop_reason,
hppa_stub_frame_this_id,
hppa_stub_frame_prev_register,
NULL,
/* Return the minimal symbol whose name is NAME and stub type is STUB_TYPE.
Return NULL if no such symbol was found. */
-struct minimal_symbol *
+struct bound_minimal_symbol
hppa_lookup_stub_minimal_symbol (const char *name,
enum unwind_stub_types stub_type)
{
struct objfile *objfile;
struct minimal_symbol *msym;
+ struct bound_minimal_symbol result = { NULL, NULL };
ALL_MSYMBOLS (objfile, msym)
{
- if (strcmp (SYMBOL_LINKAGE_NAME (msym), name) == 0)
+ if (strcmp (MSYMBOL_LINKAGE_NAME (msym), name) == 0)
{
struct unwind_table_entry *u;
- u = find_unwind_entry (SYMBOL_VALUE (msym));
+ u = find_unwind_entry (MSYMBOL_VALUE (msym));
if (u != NULL && u->stub_unwind.stub_type == stub_type)
- return msym;
+ {
+ result.objfile = objfile;
+ result.minsym = msym;
+ return result;
+ }
}
}
- return NULL;
+ return result;
}
static void
return;
}
- printf_unfiltered ("unwind_table_entry (0x%lx):\n", (unsigned long)u);
+ printf_unfiltered ("unwind_table_entry (%s):\n", host_address_to_string (u));
- printf_unfiltered ("\tregion_start = ");
- print_address (u->region_start, gdb_stdout);
+ printf_unfiltered ("\tregion_start = %s\n", hex_string (u->region_start));
gdb_flush (gdb_stdout);
- printf_unfiltered ("\n\tregion_end = ");
- print_address (u->region_end, gdb_stdout);
+ printf_unfiltered ("\tregion_end = %s\n", hex_string (u->region_end));
gdb_flush (gdb_stdout);
#define pif(FLD) if (u->FLD) printf_unfiltered (" "#FLD);
hppa32_register_type (struct gdbarch *gdbarch, int regnum)
{
if (regnum < HPPA_FP4_REGNUM)
- return builtin_type_uint32;
+ return builtin_type (gdbarch)->builtin_uint32;
else
- return builtin_type_ieee_single;
+ return builtin_type (gdbarch)->builtin_float;
}
static struct type *
hppa64_register_type (struct gdbarch *gdbarch, int regnum)
{
if (regnum < HPPA64_FP4_REGNUM)
- return builtin_type_uint64;
+ return builtin_type (gdbarch)->builtin_uint64;
else
- return builtin_type_ieee_double;
+ return builtin_type (gdbarch)->builtin_double;
}
/* Return non-zero if REGNUM is not a register available to the user
}
static CORE_ADDR
-hppa_smash_text_address (struct gdbarch *gdbarch, CORE_ADDR addr)
+hppa_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr)
{
/* The low two bits of the PC on the PA contain the privilege level.
Some genius implementing a (non-GCC) compiler apparently decided
return get_frame_register_unsigned (frame, HPPA_R0_REGNUM + 26 - argi);
}
-static void
+static enum register_status
hppa_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
int regnum, gdb_byte *buf)
{
- ULONGEST tmp;
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ ULONGEST tmp;
+ enum register_status status;
- regcache_raw_read_unsigned (regcache, regnum, &tmp);
- if (regnum == HPPA_PCOQ_HEAD_REGNUM || regnum == HPPA_PCOQ_TAIL_REGNUM)
- tmp &= ~0x3;
- store_unsigned_integer (buf, sizeof tmp, tmp);
+ status = regcache_raw_read_unsigned (regcache, regnum, &tmp);
+ if (status == REG_VALID)
+ {
+ if (regnum == HPPA_PCOQ_HEAD_REGNUM || regnum == HPPA_PCOQ_TAIL_REGNUM)
+ tmp &= ~0x3;
+ store_unsigned_integer (buf, sizeof tmp, byte_order, tmp);
+ }
+ return status;
}
static CORE_ADDR
int regnum)
{
struct gdbarch *arch = get_frame_arch (this_frame);
+ enum bfd_endian byte_order = gdbarch_byte_order (arch);
if (regnum == HPPA_PCOQ_TAIL_REGNUM)
{
trad_frame_get_prev_register (this_frame, saved_regs,
HPPA_PCOQ_HEAD_REGNUM);
- pc = extract_unsigned_integer (value_contents_all (pcoq_val), size);
+ pc = extract_unsigned_integer (value_contents_all (pcoq_val),
+ size, byte_order);
return frame_unwind_got_constant (this_frame, regnum, pc + 4);
}
- /* Make sure the "flags" register is zero in all unwound frames.
- The "flags" registers is a HP-UX specific wart, and only the code
- in hppa-hpux-tdep.c depends on it. However, it is easier to deal
- with it here. This shouldn't affect other systems since those
- should provide zero for the "flags" register anyway. */
- if (regnum == HPPA_FLAGS_REGNUM)
- return frame_unwind_got_constant (this_frame, regnum, 0);
-
return trad_frame_get_prev_register (this_frame, saved_regs, regnum);
}
\f
{ 0, 0 }
};
-static struct insn_pattern hppa_sigtramp[] = {
- /* ldi 0, %r25 or ldi 1, %r25 */
- { 0x34190000, 0xfffffffd },
- /* ldi __NR_rt_sigreturn, %r20 */
- { 0x3414015a, 0xffffffff },
- /* be,l 0x100(%sr2, %r0), %sr0, %r31 */
- { 0xe4008200, 0xffffffff },
- /* nop */
- { 0x08000240, 0xffffffff },
- { 0, 0 }
-};
-
/* Maximum number of instructions on the patterns above. */
#define HPPA_MAX_INSN_PATTERN_LEN 4
matched. */
static int
-hppa_match_insns (CORE_ADDR pc, struct insn_pattern *pattern,
- unsigned int *insn)
+hppa_match_insns (struct gdbarch *gdbarch, CORE_ADDR pc,
+ struct insn_pattern *pattern, unsigned int *insn)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR npc = pc;
int i;
gdb_byte buf[HPPA_INSN_SIZE];
target_read_memory (npc, buf, HPPA_INSN_SIZE);
- insn[i] = extract_unsigned_integer (buf, HPPA_INSN_SIZE);
+ insn[i] = extract_unsigned_integer (buf, HPPA_INSN_SIZE, byte_order);
if ((insn[i] & pattern[i].mask) == pattern[i].data)
npc += 4;
else
instruction scheme. */
static int
-hppa_match_insns_relaxed (CORE_ADDR pc, struct insn_pattern *pattern,
- unsigned int *insn)
+hppa_match_insns_relaxed (struct gdbarch *gdbarch, CORE_ADDR pc,
+ struct insn_pattern *pattern, unsigned int *insn)
{
int offset, len = 0;
len++;
for (offset = 0; offset < len; offset++)
- if (hppa_match_insns (pc - offset * HPPA_INSN_SIZE, pattern, insn))
+ if (hppa_match_insns (gdbarch, pc - offset * HPPA_INSN_SIZE,
+ pattern, insn))
return 1;
return 0;
}
int
-hppa_in_solib_call_trampoline (CORE_ADDR pc, char *name)
+hppa_in_solib_call_trampoline (struct gdbarch *gdbarch, CORE_ADDR pc)
{
unsigned int insn[HPPA_MAX_INSN_PATTERN_LEN];
struct unwind_table_entry *u;
- if (in_plt_section (pc, name) || hppa_in_dyncall (pc))
+ if (in_plt_section (pc) || hppa_in_dyncall (pc))
return 1;
/* The GNU toolchain produces linker stubs without unwind
if (u != NULL)
return 0;
- return (hppa_match_insns_relaxed (pc, hppa_import_stub, insn)
- || hppa_match_insns_relaxed (pc, hppa_import_pic_stub, insn)
- || hppa_match_insns_relaxed (pc, hppa_long_branch_stub, insn)
- || hppa_match_insns_relaxed (pc, hppa_long_branch_pic_stub, insn));
+ return
+ (hppa_match_insns_relaxed (gdbarch, pc, hppa_import_stub, insn)
+ || hppa_match_insns_relaxed (gdbarch, pc, hppa_import_pic_stub, insn)
+ || hppa_match_insns_relaxed (gdbarch, pc, hppa_long_branch_stub, insn)
+ || hppa_match_insns_relaxed (gdbarch, pc,
+ hppa_long_branch_pic_stub, insn));
}
/* This code skips several kind of "trampolines" used on PA-RISC
return pc;
}
- dp_rel = hppa_match_insns (pc, hppa_import_stub, insn);
- if (dp_rel || hppa_match_insns (pc, hppa_import_pic_stub, insn))
+ dp_rel = hppa_match_insns (gdbarch, pc, hppa_import_stub, insn);
+ if (dp_rel || hppa_match_insns (gdbarch, pc, hppa_import_pic_stub, insn))
{
/* Extract the target address from the addil/ldw sequence. */
pc = hppa_extract_21 (insn[0]) + hppa_extract_14 (insn[1]);
/* fallthrough */
}
- if (in_plt_section (pc, NULL))
+ if (in_plt_section (pc))
{
pc = read_memory_typed_address (pc, func_ptr_type);
/* If the PLT slot has not yet been resolved, the target will be
the PLT stub. */
- if (in_plt_section (pc, NULL))
+ if (in_plt_section (pc))
{
/* Sanity check: are we pointing to the PLT stub? */
- if (!hppa_match_insns (pc, hppa_plt_stub, insn))
+ if (!hppa_match_insns (gdbarch, pc, hppa_plt_stub, insn))
{
- warning (_("Cannot resolve PLT stub at 0x%s."), paddr_nz (pc));
+ warning (_("Cannot resolve PLT stub at %s."),
+ paddress (gdbarch, pc));
return 0;
}
return (arches->gdbarch);
/* If none found, then allocate and initialize one. */
- tdep = XZALLOC (struct gdbarch_tdep);
+ tdep = XCNEW (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
/* Determine from the bfd_arch_info structure if we are dealing with
/* The following gdbarch vector elements do not depend on the address
size, or in any other gdbarch element previously set. */
set_gdbarch_skip_prologue (gdbarch, hppa_skip_prologue);
- set_gdbarch_in_function_epilogue_p (gdbarch,
- hppa_in_function_epilogue_p);
+ set_gdbarch_stack_frame_destroyed_p (gdbarch,
+ hppa_stack_frame_destroyed_p);
set_gdbarch_inner_than (gdbarch, core_addr_greaterthan);
set_gdbarch_sp_regnum (gdbarch, HPPA_SP_REGNUM);
set_gdbarch_fp0_regnum (gdbarch, HPPA_FP0_REGNUM);
- set_gdbarch_addr_bits_remove (gdbarch, hppa_smash_text_address);
- set_gdbarch_smash_text_address (gdbarch, hppa_smash_text_address);
+ set_gdbarch_addr_bits_remove (gdbarch, hppa_addr_bits_remove);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
set_gdbarch_read_pc (gdbarch, hppa_read_pc);
set_gdbarch_write_pc (gdbarch, hppa_write_pc);
fprintf_unfiltered (file, "elf = %s\n", tdep->is_elf ? "yes" : "no");
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_hppa_tdep;
+
void
_initialize_hppa_tdep (void)
{
_("Print unwind table entry at given address."),
&maintenanceprintlist);
- /* Debug this files internals. */
+ /* Debug this files internals. */
add_setshow_boolean_cmd ("hppa", class_maintenance, &hppa_debug, _("\
Set whether hppa target specific debugging information should be displayed."),
_("\