/* 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, 2009
- Free Software Foundation, Inc.
+ Copyright (C) 1986-2020 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"
#include "gdbtypes.h"
#include "objfiles.h"
#include "hppa-tdep.h"
+#include <algorithm>
-static int hppa_debug = 0;
+static bool hppa_debug = false;
/* Some local constants. */
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_key<hppa_objfile_private,
+ gdb::noop_deleter<hppa_objfile_private>>
+ hppa_objfile_priv_data;
-/* Get at various relevent fields of an instruction word. */
+/* Get at various relevant 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);
+ 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);
+ 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;
+ hppa_objfile_private *priv
+ = OBSTACK_ZALLOC (&objfile->objfile_obstack, hppa_objfile_private);
- priv = (struct hppa_objfile_private *)
- obstack_alloc (&objfile->objfile_obstack,
- sizeof (struct hppa_objfile_private));
- set_objfile_data (objfile, hppa_objfile_priv_data, priv);
- memset (priv, 0, sizeof (*priv));
+ hppa_objfile_priv_data.set (objfile, priv);
return 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 = 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.
+ section in the BFD looking for unwinder sections instead of trying
+ 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 (strcmp (unwind_sec->name, "$UNWIND_START$") == 0
|| strcmp (unwind_sec->name, ".PARISC.unwind") == 0)
{
- unwind_size = bfd_section_size (objfile->obfd, unwind_sec);
+ unwind_size = bfd_section_size (unwind_sec);
unwind_entries = unwind_size / UNWIND_ENTRY_SIZE;
total_entries += unwind_entries;
if (stub_unwind_sec)
{
- stub_unwind_size = bfd_section_size (objfile->obfd, stub_unwind_sec);
+ stub_unwind_size = bfd_section_size (stub_unwind_sec);
stub_entries = stub_unwind_size / STUB_UNWIND_ENTRY_SIZE;
}
else
if (strcmp (unwind_sec->name, "$UNWIND_START$") == 0
|| strcmp (unwind_sec->name, ".PARISC.unwind") == 0)
{
- unwind_size = bfd_section_size (objfile->obfd, unwind_sec);
+ unwind_size = bfd_section_size (unwind_sec);
unwind_entries = unwind_size / UNWIND_ENTRY_SIZE;
internalize_unwinds (objfile, &ui->table[index], unwind_sec,
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);
compare_unwind_entries);
/* Keep a pointer to the unwind information. */
- obj_private = (struct hppa_objfile_private *)
- objfile_data (objfile, hppa_objfile_priv_data);
+ obj_private = hppa_objfile_priv_data.get (objfile);
if (obj_private == NULL)
obj_private = hppa_init_objfile_priv_data (objfile);
find_unwind_entry (CORE_ADDR pc)
{
int first, middle, last;
- struct objfile *objfile;
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)
return NULL;
}
- ALL_OBJFILES (objfile)
- {
- struct hppa_unwind_info *ui;
- ui = NULL;
- priv = objfile_data (objfile, hppa_objfile_priv_data);
- if (priv)
- ui = ((struct hppa_objfile_private *) priv)->unwind_info;
+ for (objfile *objfile : current_program_space->objfiles ())
+ {
+ struct hppa_unwind_info *ui;
+ ui = NULL;
+ priv = hppa_objfile_priv_data.get (objfile);
+ if (priv)
+ ui = ((struct hppa_objfile_private *) priv)->unwind_info;
- if (!ui)
- {
- read_unwind_info (objfile);
- priv = objfile_data (objfile, hppa_objfile_priv_data);
- if (priv == NULL)
- error (_("Internal error reading unwind information."));
- ui = ((struct hppa_objfile_private *) priv)->unwind_info;
- }
+ if (!ui)
+ {
+ read_unwind_info (objfile);
+ priv = hppa_objfile_priv_data.get (objfile);
+ 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));
- return ui->cache;
- }
+ if (ui->cache
+ && pc >= ui->cache->region_start
+ && pc <= ui->cache->region_end)
+ {
+ if (hppa_debug)
+ 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;
+ first = 0;
+ last = ui->last;
- while (first <= last)
- {
- middle = (first + last) / 2;
- if (pc >= ui->table[middle].region_start
- && pc <= ui->table[middle].region_end)
- {
- ui->cache = &ui->table[middle];
- if (hppa_debug)
- fprintf_unfiltered (gdb_stdlog, "0x%s }\n",
- paddr_nz ((uintptr_t) ui->cache));
- return &ui->table[middle];
- }
+ while (first <= last)
+ {
+ middle = (first + last) / 2;
+ if (pc >= ui->table[middle].region_start
+ && pc <= ui->table[middle].region_end)
+ {
+ ui->cache = &ui->table[middle];
+ if (hppa_debug)
+ fprintf_unfiltered (gdb_stdlog, "%s }\n",
+ hex_string ((uintptr_t) ui->cache));
+ return &ui->table[middle];
+ }
- if (pc < ui->table[middle].region_start)
- last = middle - 1;
- else
- first = middle + 1;
- }
- } /* ALL_OBJFILES() */
+ if (pc < ui->table[middle].region_start)
+ last = middle - 1;
+ else
+ first = middle + 1;
+ }
+ }
if (hppa_debug)
fprintf_unfiltered (gdb_stdlog, "NULL (not found) }\n");
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 0;
}
-static const unsigned char *
-hppa_breakpoint_from_pc (struct gdbarch *gdbarch, CORE_ADDR *pc, int *len)
-{
- static const unsigned char breakpoint[] = {0x00, 0x01, 0x00, 0x04};
- (*len) = sizeof (breakpoint);
- return breakpoint;
-}
+constexpr gdb_byte hppa_break_insn[] = {0x00, 0x01, 0x00, 0x04};
+
+typedef BP_MANIPULATION (hppa_break_insn) hppa_breakpoint;
/* Return the name of a register. */
static const char *
hppa32_register_name (struct gdbarch *gdbarch, int i)
{
- static char *names[] = {
+ static const char *names[] = {
"flags", "r1", "rp", "r3",
"r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11",
static const char *
hppa64_register_name (struct gdbarch *gdbarch, int i)
{
- static char *names[] = {
+ static const char *names[] = {
"flags", "r1", "rp", "r3",
"r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11",
hppa64_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
{
/* The general registers and the sar are the same in both sets. */
- if (reg <= 32)
+ if (reg >= 0 && reg <= 32)
return reg;
/* fr4-fr31 are mapped from 72 in steps of 2. */
if (reg >= 72 && reg < 72 + 28 * 2 && !(reg & 1))
return HPPA64_FP4_REGNUM + (reg - 72) / 2;
- warning (_("Unmapped DWARF DBX Register #%d encountered."), reg);
return -1;
}
hppa32_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr,
int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+ function_call_return_method return_method,
+ 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;
/* Stack base address at which the first parameter is stored. */
CORE_ADDR param_end = 0;
- /* The inner most end of the stack after all the parameters have
- been pushed. */
- CORE_ADDR new_sp = 0;
-
/* Two passes. First pass computes the location of everything,
second pass writes the bytes out. */
int write_pass;
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)));
}
int fpLreg = 72 + (param_ptr - 36) / 4 * 2;
int fpreg = 74 + (param_ptr - 32) / 8 * 4;
- regcache_cooked_write (regcache, grreg, param_val);
- regcache_cooked_write (regcache, fpLreg, param_val);
+ regcache->cooked_write (grreg, param_val);
+ regcache->cooked_write (fpLreg, param_val);
if (param_len > 4)
{
- regcache_cooked_write (regcache, grreg + 1,
- param_val + 4);
+ regcache->cooked_write (grreg + 1, param_val + 4);
- regcache_cooked_write (regcache, fpreg, param_val);
- regcache_cooked_write (regcache, fpreg + 1,
- param_val + 4);
+ regcache->cooked_write (fpreg, param_val);
+ regcache->cooked_write (fpreg + 1, param_val + 4);
}
}
}
}
/* If a structure has to be returned, set up register 28 to hold its
- address */
- if (struct_return)
+ address. */
+ if (return_method == return_method_struct)
regcache_cooked_write_unsigned (regcache, 28, struct_addr);
gp = tdep->find_global_pointer (gdbarch, function);
}
case TYPE_CODE_PTR:
case TYPE_CODE_REF:
+ case TYPE_CODE_RVALUE_REF:
return (TYPE_LENGTH (type) == 8);
default:
break;
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;
hppa64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr,
int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+ function_call_return_method return_method,
+ 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;
}
}
passed in floating-point registers, are passed in
the right halves of the floating point registers;
the left halves are unused." */
- regcache_cooked_write_part (regcache, regnum, offset % 8,
- len, value_contents (arg));
+ regcache->cooked_write_part (regnum, offset % 8, len,
+ value_contents (arg));
}
}
}
{
/* "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
regnum = HPPA_ARG0_REGNUM - offset / 8;
while (regnum > HPPA_ARG0_REGNUM - 8 && len > 0)
{
- regcache_cooked_write_part (regcache, regnum,
- offset % 8, min (len, 8), valbuf);
- offset += min (len, 8);
- valbuf += min (len, 8);
- len -= min (len, 8);
+ regcache->cooked_write_part (regnum, offset % 8, std::min (len, 8),
+ valbuf);
+ offset += std::min (len, 8);
+ valbuf += std::min (len, 8);
+ len -= std::min (len, 8);
regnum--;
}
/* Allocate the outgoing parameter area. Make sure the outgoing
parameter area is multiple of 16 bytes in length. */
- sp += max (align_up (offset, 16), 64);
+ sp += std::max (align_up (offset, 16), (ULONGEST) 64);
/* Allocate 32-bytes of scratch space. The documentation doesn't
mention this, but it seems to be needed. */
/* If a structure has to be returned, set up GR 28 (%ret0) to hold
its address. */
- if (struct_return)
+ if (return_method == return_method_struct)
regcache_cooked_write_unsigned (regcache, HPPA_RET0_REGNUM, struct_addr);
/* Set up GR27 (%dp) to hold the global pointer (gp). */
/* 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)
{
if (part > 0)
{
if (readbuf != NULL)
- regcache_cooked_read_part (regcache, reg, 4 - part,
- part, readbuf);
+ regcache->cooked_read_part (reg, 4 - part, part, readbuf);
if (writebuf != NULL)
- regcache_cooked_write_part (regcache, reg, 4 - part,
- part, writebuf);
+ regcache->cooked_write_part (reg, 4 - part, part, writebuf);
reg++;
}
/* Now transfer the remaining register values. */
for (b = part; b < TYPE_LENGTH (type); b += 4)
{
if (readbuf != NULL)
- regcache_cooked_read (regcache, reg, readbuf + b);
+ regcache->cooked_read (reg, readbuf + b);
if (writebuf != NULL)
- regcache_cooked_write (regcache, reg, writebuf + b);
+ regcache->cooked_write (reg, writebuf + b);
reg++;
}
return RETURN_VALUE_REGISTER_CONVENTION;
}
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)
{
if (len > 16)
{
- /* All return values larget than 128 bits must be aggregate
+ /* All return values larger than 128 bits must be aggregate
return values. */
gdb_assert (!hppa64_integral_or_pointer_p (type));
gdb_assert (!hppa64_floating_p (type));
{
while (len > 0)
{
- regcache_cooked_read_part (regcache, regnum, offset,
- min (len, 8), readbuf);
- readbuf += min (len, 8);
- len -= min (len, 8);
+ regcache->cooked_read_part (regnum, offset, std::min (len, 8),
+ readbuf);
+ readbuf += std::min (len, 8);
+ len -= std::min (len, 8);
regnum++;
}
}
{
while (len > 0)
{
- regcache_cooked_write_part (regcache, regnum, offset,
- min (len, 8), writebuf);
- writebuf += min (len, 8);
- len -= min (len, 8);
+ regcache->cooked_write_part (regnum, offset, std::min (len, 8),
+ writebuf);
+ writebuf += std::min (len, 8);
+ len -= std::min (len, 8);
regnum++;
}
}
return align_up (addr, 16);
}
-CORE_ADDR
-hppa_read_pc (struct regcache *regcache)
+static CORE_ADDR
+hppa_read_pc (readable_regcache *regcache)
{
ULONGEST ipsw;
ULONGEST pc;
- regcache_cooked_read_unsigned (regcache, HPPA_IPSW_REGNUM, &ipsw);
- regcache_cooked_read_unsigned (regcache, HPPA_PCOQ_HEAD_REGNUM, &pc);
+ regcache->cooked_read (HPPA_IPSW_REGNUM, &ipsw);
+ regcache->cooked_read (HPPA_PCOQ_HEAD_REGNUM, &pc);
/* If the current instruction is nullified, then we are effectively
still executing the previous instruction. Pretend we are still
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_INDEX_TYPE (type));
- 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. */
/* std,ma X,D(sp) */
if ((inst & 0xffe00008) == 0x73c00008)
- return (inst & 0x1 ? -1 << 13 : 0) | (((inst >> 4) & 0x3ff) << 3);
+ return (inst & 0x1 ? -(1 << 13) : 0) | (((inst >> 4) & 0x3ff) << 3);
/* addil high21,%r30; ldo low11,(%r1),%r30)
save high bits in save_high21 for later use. */
}
/* 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 treat 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;
For unoptimized GCC code and for any HP CC code this will never ever
examine any user instructions.
- For optimzied GCC code we're faced with problems. GCC will schedule
+ For optimized GCC code we're faced with problems. GCC will schedule
its prologue and make prologue instructions available for delay slot
filling. The end result is user code gets mixed in with the prologue
and a prologue instruction may be in the delay slot of the first branch
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);
final_iteration = 1;
}
- /* We've got a tenative location for the end of the prologue. However
+ /* We've got a tentative location for the end of the prologue. However
because of limitations in the unwind descriptor mechanism we may
have went too far into user code looking for the save of a register
that does not exist. So, if there registers we expected to be saved
{
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
may be the first instruction of the prologue. If that happens, then
the instruction skipping code has a bug that needs to be fixed. */
if (post_prologue_pc != 0)
- return max (pc, post_prologue_pc);
+ return std::max (pc, post_prologue_pc);
else
return (skip_prologue_hard_way (gdbarch, pc, 1));
}
/* 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 frame_id *this_id)
{
struct hppa_frame_cache *info;
- CORE_ADDR pc = get_frame_pc (this_frame);
struct unwind_table_entry *u;
info = hppa_frame_cache (this_frame, this_cache);
{
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,
hppa_stub_frame_unwind_cache (struct frame_info *this_frame,
void **this_cache)
{
- struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct hppa_stub_unwind_cache *info;
- 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;
info->base = get_frame_register_unsigned (this_frame, HPPA_SP_REGNUM);
- if (gdbarch_osabi (gdbarch) == GDB_OSABI_HPUX_SOM)
- {
- /* HPUX uses export stubs in function calls; the export stub clobbers
- the return value of the caller, and, later restores it from the
- stack. */
- u = find_unwind_entry (get_frame_pc (this_frame));
-
- if (u && u->stub_unwind.stub_type == EXPORT)
- {
- info->saved_regs[HPPA_PCOQ_HEAD_REGNUM].addr = info->base - 24;
-
- return info;
- }
- }
-
/* By default we assume that stubs do not change the rp. */
info->saved_regs[HPPA_PCOQ_HEAD_REGNUM].realreg = HPPA_RP_REGNUM;
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,
hppa_stub_unwind_sniffer
};
-static struct frame_id
-hppa_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
-{
- return frame_id_build (get_frame_register_unsigned (this_frame,
- HPPA_SP_REGNUM),
- get_frame_pc (this_frame));
-}
-
CORE_ADDR
hppa_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
/* 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)
+ for (objfile *objfile : current_program_space->objfiles ())
{
- if (strcmp (SYMBOL_LINKAGE_NAME (msym), name) == 0)
- {
- struct unwind_table_entry *u;
+ for (minimal_symbol *msym : objfile->msymbols ())
+ {
+ if (strcmp (msym->linkage_name (), name) == 0)
+ {
+ struct unwind_table_entry *u;
- u = find_unwind_entry (SYMBOL_VALUE (msym));
- if (u != NULL && u->stub_unwind.stub_type == stub_type)
- return msym;
- }
+ u = find_unwind_entry (MSYMBOL_VALUE (msym));
+ if (u != NULL && u->stub_unwind.stub_type == stub_type)
+ {
+ result.objfile = objfile;
+ result.minsym = msym;
+ return result;
+ }
+ }
+ }
}
- return NULL;
+ return result;
}
static void
-unwind_command (char *exp, int from_tty)
+unwind_command (const char *exp, int from_tty)
{
CORE_ADDR address;
struct unwind_table_entry *u;
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);
- gdb_flush (gdb_stdout);
+ printf_unfiltered ("\tregion_start = %s\n", hex_string (u->region_start));
- printf_unfiltered ("\n\tregion_end = ");
- print_address (u->region_end, gdb_stdout);
- gdb_flush (gdb_stdout);
+ printf_unfiltered ("\tregion_end = %s\n", hex_string (u->region_end));
#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
-hppa_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
+static enum register_status
+hppa_pseudo_register_read (struct gdbarch *gdbarch, readable_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 (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
return 1;
}
-/* This relaxed version of the insstruction matcher allows us to match
+/* This relaxed version of the instruction matcher allows us to match
from somewhere inside the pattern, by looking backwards in the
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;
}
{
struct gdbarch_tdep *tdep;
struct gdbarch *gdbarch;
-
- /* Try to determine the ABI of the object we are loading. */
- if (info.abfd != NULL && info.osabi == GDB_OSABI_UNKNOWN)
- {
- /* If it's a SOM file, assume it's HP/UX SOM. */
- if (bfd_get_flavour (info.abfd) == bfd_target_som_flavour)
- info.osabi = GDB_OSABI_HPUX_SOM;
- }
/* find a candidate among the list of pre-declared architectures. */
arches = gdbarch_list_lookup_by_info (arches, &info);
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);
/* Helper for function argument information. */
set_gdbarch_fetch_pointer_argument (gdbarch, hppa_fetch_pointer_argument);
- set_gdbarch_print_insn (gdbarch, print_insn_hppa);
-
/* When a hardware watchpoint triggers, we'll move the inferior past
it by removing all eventpoints; stepping past the instruction
that caused the trigger; reinserting eventpoints; and checking
internal_error (__FILE__, __LINE__, _("bad switch"));
}
- set_gdbarch_breakpoint_from_pc (gdbarch, hppa_breakpoint_from_pc);
+ set_gdbarch_breakpoint_kind_from_pc (gdbarch, hppa_breakpoint::kind_from_pc);
+ set_gdbarch_sw_breakpoint_from_kind (gdbarch, hppa_breakpoint::bp_from_kind);
set_gdbarch_pseudo_register_read (gdbarch, hppa_pseudo_register_read);
/* Frame unwind methods. */
- set_gdbarch_dummy_id (gdbarch, hppa_dummy_id);
set_gdbarch_unwind_pc (gdbarch, hppa_unwind_pc);
/* Hook in ABI-specific overrides, if they have been registered. */
void
_initialize_hppa_tdep (void)
{
- struct cmd_list_element *c;
-
gdbarch_register (bfd_arch_hppa, hppa_gdbarch_init, hppa_dump_tdep);
- hppa_objfile_priv_data = register_objfile_data ();
-
add_cmd ("unwind", class_maintenance, unwind_command,
_("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."),
_("\
projects / deliverable / binutils-gdb.git / blobdiff