/* Target-dependent code for the HP PA architecture, for GDB.
- Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
#include "inferior.h"
#include "value.h"
#include "regcache.h"
-
+#include "completer.h"
+#include "language.h"
+#include "osabi.h"
+#include "gdb_assert.h"
+#include "infttrace.h"
/* For argument passing to the inferior */
#include "symtab.h"
+#include "infcall.h"
#ifdef USG
#include <sys/types.h>
#include "symfile.h"
#include "objfiles.h"
+/* Some local constants. */
+static const int hppa_num_regs = 128;
+
+/* Get at various relevent fields of an instruction word. */
+#define MASK_5 0x1f
+#define MASK_11 0x7ff
+#define MASK_14 0x3fff
+#define MASK_21 0x1fffff
+
+/* Define offsets into the call dummy for the target function address.
+ See comments related to CALL_DUMMY for more info. */
+#define FUNC_LDIL_OFFSET (INSTRUCTION_SIZE * 9)
+#define FUNC_LDO_OFFSET (INSTRUCTION_SIZE * 10)
+
+/* Define offsets into the call dummy for the _sr4export address.
+ See comments related to CALL_DUMMY for more info. */
+#define SR4EXPORT_LDIL_OFFSET (INSTRUCTION_SIZE * 12)
+#define SR4EXPORT_LDO_OFFSET (INSTRUCTION_SIZE * 13)
+
/* To support detection of the pseudo-initial frame
that threads have. */
#define THREAD_INITIAL_FRAME_SYMBOL "__pthread_exit"
#define THREAD_INITIAL_FRAME_SYM_LEN sizeof(THREAD_INITIAL_FRAME_SYMBOL)
+/* Sizes (in bytes) of the native unwind entries. */
+#define UNWIND_ENTRY_SIZE 16
+#define STUB_UNWIND_ENTRY_SIZE 8
+
+static int get_field (unsigned word, int from, int to);
+
static int extract_5_load (unsigned int);
static unsigned extract_5R_store (unsigned int);
static unsigned extract_5r_store (unsigned int);
-static void find_dummy_frame_regs (struct frame_info *,
- struct frame_saved_regs *);
+static void find_dummy_frame_regs (struct frame_info *, CORE_ADDR *);
static int find_proc_framesize (CORE_ADDR);
static int sign_extend (unsigned int, unsigned int);
-static int restore_pc_queue (struct frame_saved_regs *);
+static int restore_pc_queue (CORE_ADDR *);
static int hppa_alignof (struct type *);
static void pa_print_fp_reg (int);
static void pa_strcat_fp_reg (int, struct ui_file *, enum precision_type);
static void record_text_segment_lowaddr (bfd *, asection *, void *);
+/* FIXME: brobecker 2002-11-07: We will likely be able to make the
+ following functions static, once we hppa is partially multiarched. */
+int hppa_reg_struct_has_addr (int gcc_p, struct type *type);
+CORE_ADDR hppa_skip_prologue (CORE_ADDR pc);
+CORE_ADDR hppa_skip_trampoline_code (CORE_ADDR pc);
+int hppa_in_solib_call_trampoline (CORE_ADDR pc, char *name);
+int hppa_in_solib_return_trampoline (CORE_ADDR pc, char *name);
+CORE_ADDR hppa_saved_pc_after_call (struct frame_info *frame);
+int hppa_inner_than (CORE_ADDR lhs, CORE_ADDR rhs);
+CORE_ADDR hppa_stack_align (CORE_ADDR sp);
+int hppa_pc_requires_run_before_use (CORE_ADDR pc);
+int hppa_instruction_nullified (void);
+int hppa_register_raw_size (int reg_nr);
+int hppa_register_byte (int reg_nr);
+struct type * hppa_register_virtual_type (int reg_nr);
+void hppa_store_struct_return (CORE_ADDR addr, CORE_ADDR sp);
+void hppa_extract_return_value (struct type *type, char *regbuf, char *valbuf);
+int hppa_use_struct_convention (int gcc_p, struct type *type);
+void hppa_store_return_value (struct type *type, char *valbuf);
+CORE_ADDR hppa_extract_struct_value_address (char *regbuf);
+int hppa_cannot_store_register (int regnum);
+void hppa_init_extra_frame_info (int fromleaf, struct frame_info *frame);
+CORE_ADDR hppa_frame_chain (struct frame_info *frame);
+int hppa_frame_chain_valid (CORE_ADDR chain, struct frame_info *thisframe);
+int hppa_frameless_function_invocation (struct frame_info *frame);
+CORE_ADDR hppa_frame_saved_pc (struct frame_info *frame);
+CORE_ADDR hppa_frame_args_address (struct frame_info *fi);
+CORE_ADDR hppa_frame_locals_address (struct frame_info *fi);
+int hppa_frame_num_args (struct frame_info *frame);
+void hppa_push_dummy_frame (void);
+void hppa_pop_frame (void);
+CORE_ADDR hppa_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun,
+ int nargs, struct value **args,
+ struct type *type, int gcc_p);
+CORE_ADDR hppa_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
+ int struct_return, CORE_ADDR struct_addr);
+CORE_ADDR hppa_smash_text_address (CORE_ADDR addr);
+CORE_ADDR hppa_target_read_pc (ptid_t ptid);
+void hppa_target_write_pc (CORE_ADDR v, ptid_t ptid);
+CORE_ADDR hppa_target_read_fp (void);
typedef struct
{
}
args_for_find_stub;
-static int cover_find_stub_with_shl_get (PTR);
+static int cover_find_stub_with_shl_get (void *);
static int is_pa_2 = 0; /* False */
/* In breakpoint.c */
extern int exception_catchpoints_are_fragile;
-/* This is defined in valops.c. */
-extern struct value *find_function_in_inferior (char *);
-
/* Should call_function allocate stack space for a struct return? */
+
int
hppa_use_struct_convention (int gcc_p, struct type *type)
{
- return (TYPE_LENGTH (type) > 2 * REGISTER_SIZE);
+ return (TYPE_LENGTH (type) > 2 * DEPRECATED_REGISTER_SIZE);
}
\f
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). */
+
+static int
+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 */
static int
word &= MASK_21;
word <<= 11;
- val = GET_FIELD (word, 20, 20);
+ val = get_field (word, 20, 20);
val <<= 11;
- val |= GET_FIELD (word, 9, 19);
+ val |= get_field (word, 9, 19);
val <<= 2;
- val |= GET_FIELD (word, 5, 6);
+ val |= get_field (word, 5, 6);
val <<= 5;
- val |= GET_FIELD (word, 0, 4);
+ val |= get_field (word, 0, 4);
val <<= 2;
- val |= GET_FIELD (word, 7, 8);
+ val |= get_field (word, 7, 8);
return sign_extend (val, 21) << 11;
}
{
unsigned val = 0;
- val |= GET_FIELD (opnd, 11 + 14, 11 + 18);
+ val |= get_field (opnd, 11 + 14, 11 + 18);
val <<= 2;
- val |= GET_FIELD (opnd, 11 + 12, 11 + 13);
+ val |= get_field (opnd, 11 + 12, 11 + 13);
val <<= 2;
- val |= GET_FIELD (opnd, 11 + 19, 11 + 20);
+ val |= get_field (opnd, 11 + 19, 11 + 20);
val <<= 11;
- val |= GET_FIELD (opnd, 11 + 1, 11 + 11);
+ val |= get_field (opnd, 11 + 1, 11 + 11);
val <<= 1;
- val |= GET_FIELD (opnd, 11 + 0, 11 + 0);
+ val |= get_field (opnd, 11 + 0, 11 + 0);
return word | val;
}
static int
extract_17 (unsigned word)
{
- return sign_extend (GET_FIELD (word, 19, 28) |
- GET_FIELD (word, 29, 29) << 10 |
- GET_FIELD (word, 11, 15) << 11 |
+ return sign_extend (get_field (word, 19, 28) |
+ get_field (word, 29, 29) << 10 |
+ get_field (word, 11, 15) << 11 |
(word & 0x1) << 16, 17) << 2;
}
\f
static void
record_text_segment_lowaddr (bfd *abfd, asection *section, void *ignored)
{
- if ((section->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)
+ if (((section->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY))
== (SEC_ALLOC | SEC_LOAD | SEC_READONLY))
&& section->vma < low_text_segment_address)
low_text_segment_address = section->vma;
if (TARGET_PTR_BIT == 64 && text_offset == 0)
{
bfd_map_over_sections (objfile->obfd,
- record_text_segment_lowaddr, (PTR) NULL);
+ record_text_segment_lowaddr, NULL);
/* ?!? Mask off some low bits. Should this instead subtract
out the lowest section's filepos or something like that?
obj_private->so_info = NULL;
obj_private->dp = 0;
- objfile->obj_private = (PTR) obj_private;
+ objfile->obj_private = obj_private;
}
obj_private = (obj_private_data_t *) objfile->obj_private;
obj_private->unwind_info = ui;
return NULL;
}
+const unsigned char *
+hppa_breakpoint_from_pc (CORE_ADDR *pc, int *len)
+{
+ static const char breakpoint[] = {0x00, 0x01, 0x00, 0x04};
+ (*len) = sizeof (breakpoint);
+ return breakpoint;
+}
+
/* Return the adjustment necessary to make for addresses on the stack
as presented by hpread.c.
its frame isn't a pure interrupt frame. Deal with this. */
msym_us = lookup_minimal_symbol_by_pc (pc);
- return u->HP_UX_interrupt_marker && !IN_SIGTRAMP (pc, SYMBOL_NAME (msym_us));
+ return (u->HP_UX_interrupt_marker
+ && !PC_IN_SIGTRAMP (pc, DEPRECATED_SYMBOL_NAME (msym_us)));
}
/* Called when no unwind descriptor was found for PC. Returns 1 if it
/* If Save_SP is set, and we're not in an interrupt or signal caller,
then we have a frame pointer. Use it. */
- if (u->Save_SP && !pc_in_interrupt_handler (pc)
- && !IN_SIGTRAMP (pc, SYMBOL_NAME (msym_us)))
+ if (u->Save_SP
+ && !pc_in_interrupt_handler (pc)
+ && msym_us
+ && !PC_IN_SIGTRAMP (pc, DEPRECATED_SYMBOL_NAME (msym_us)))
return -1;
return u->Total_frame_size << 3;
}
\f
int
-frameless_function_invocation (struct frame_info *frame)
+hppa_frameless_function_invocation (struct frame_info *frame)
{
struct unwind_table_entry *u;
- u = find_unwind_entry (frame->pc);
+ u = find_unwind_entry (get_frame_pc (frame));
if (u == 0)
return 0;
return (u->Total_frame_size == 0 && u->stub_unwind.stub_type == 0);
}
+/* Immediately after a function call, return the saved pc.
+ Can't go through the frames for this because on some machines
+ the new frame is not set up until the new function executes
+ some instructions. */
+
CORE_ADDR
-saved_pc_after_call (struct frame_info *frame)
+hppa_saved_pc_after_call (struct frame_info *frame)
{
int ret_regnum;
CORE_ADDR pc;
the stub will return to out of the stack. */
u = find_unwind_entry (pc);
if (u && u->stub_unwind.stub_type != 0)
- return FRAME_SAVED_PC (frame);
+ return DEPRECATED_FRAME_SAVED_PC (frame);
else
return pc;
}
{
CORE_ADDR pc = get_frame_pc (frame);
struct unwind_table_entry *u;
- CORE_ADDR old_pc;
+ CORE_ADDR old_pc = 0;
int spun_around_loop = 0;
int rp_offset = 0;
are saved in the exact same order as GDB numbers registers. How
convienent. */
if (pc_in_interrupt_handler (pc))
- return read_memory_integer (frame->frame + PC_REGNUM * 4,
+ return read_memory_integer (get_frame_base (frame) + PC_REGNUM * 4,
TARGET_PTR_BIT / 8) & ~0x3;
- if ((frame->pc >= frame->frame
- && frame->pc <= (frame->frame
- /* A call dummy is sized in words, but it is
- actually a series of instructions. Account
- for that scaling factor. */
- + ((REGISTER_SIZE / INSTRUCTION_SIZE)
- * CALL_DUMMY_LENGTH)
- /* Similarly we have to account for 64bit
- wide register saves. */
- + (32 * REGISTER_SIZE)
- /* We always consider FP regs 8 bytes long. */
- + (NUM_REGS - FP0_REGNUM) * 8
- /* Similarly we have to account for 64bit
- wide register saves. */
- + (6 * REGISTER_SIZE))))
+ if ((get_frame_pc (frame) >= get_frame_base (frame)
+ && (get_frame_pc (frame)
+ <= (get_frame_base (frame)
+ /* A call dummy is sized in words, but it is actually a
+ series of instructions. Account for that scaling
+ factor. */
+ + ((DEPRECATED_REGISTER_SIZE / INSTRUCTION_SIZE)
+ * DEPRECATED_CALL_DUMMY_LENGTH)
+ /* Similarly we have to account for 64bit wide register
+ saves. */
+ + (32 * DEPRECATED_REGISTER_SIZE)
+ /* We always consider FP regs 8 bytes long. */
+ + (NUM_REGS - FP0_REGNUM) * 8
+ /* Similarly we have to account for 64bit wide register
+ saves. */
+ + (6 * DEPRECATED_REGISTER_SIZE)))))
{
- return read_memory_integer ((frame->frame
+ return read_memory_integer ((get_frame_base (frame)
+ (TARGET_PTR_BIT == 64 ? -16 : -20)),
TARGET_PTR_BIT / 8) & ~0x3;
}
#ifdef FRAME_SAVED_PC_IN_SIGTRAMP
/* Deal with signal handler caller frames too. */
- if (frame->signal_handler_caller)
+ if ((get_frame_type (frame) == SIGTRAMP_FRAME))
{
CORE_ADDR rp;
FRAME_SAVED_PC_IN_SIGTRAMP (frame, &rp);
}
#endif
- if (frameless_function_invocation (frame))
+ if (hppa_frameless_function_invocation (frame))
{
int ret_regnum;
handler caller, then we need to look in the saved
register area to get the return pointer (the values
in the registers may not correspond to anything useful). */
- if (frame->next
- && (frame->next->signal_handler_caller
- || pc_in_interrupt_handler (frame->next->pc)))
+ if (get_next_frame (frame)
+ && ((get_frame_type (get_next_frame (frame)) == SIGTRAMP_FRAME)
+ || pc_in_interrupt_handler (get_frame_pc (get_next_frame (frame)))))
{
- struct frame_saved_regs saved_regs;
-
- get_frame_saved_regs (frame->next, &saved_regs);
- if (read_memory_integer (saved_regs.regs[FLAGS_REGNUM],
+ CORE_ADDR *saved_regs;
+ hppa_frame_init_saved_regs (get_next_frame (frame));
+ saved_regs = get_frame_saved_regs (get_next_frame (frame));
+ if (read_memory_integer (saved_regs[FLAGS_REGNUM],
TARGET_PTR_BIT / 8) & 0x2)
{
- pc = read_memory_integer (saved_regs.regs[31],
+ pc = read_memory_integer (saved_regs[31],
TARGET_PTR_BIT / 8) & ~0x3;
/* Syscalls are really two frames. The syscall stub itself
with a return pointer in %rp and the kernel call with
a return pointer in %r31. We return the %rp variant
if %r31 is the same as frame->pc. */
- if (pc == frame->pc)
- pc = read_memory_integer (saved_regs.regs[RP_REGNUM],
+ if (pc == get_frame_pc (frame))
+ pc = read_memory_integer (saved_regs[RP_REGNUM],
TARGET_PTR_BIT / 8) & ~0x3;
}
else
- pc = read_memory_integer (saved_regs.regs[RP_REGNUM],
+ pc = read_memory_integer (saved_regs[RP_REGNUM],
TARGET_PTR_BIT / 8) & ~0x3;
}
else
frame is a signal or interrupt handler, then dig the right
information out of the saved register info. */
if (rp_offset == 0
- && frame->next
- && (frame->next->signal_handler_caller
- || pc_in_interrupt_handler (frame->next->pc)))
+ && get_next_frame (frame)
+ && ((get_frame_type (get_next_frame (frame)) == SIGTRAMP_FRAME)
+ || pc_in_interrupt_handler (get_frame_pc (get_next_frame (frame)))))
{
- struct frame_saved_regs saved_regs;
-
- get_frame_saved_regs (frame->next, &saved_regs);
- if (read_memory_integer (saved_regs.regs[FLAGS_REGNUM],
+ CORE_ADDR *saved_regs;
+ hppa_frame_init_saved_regs (get_next_frame (frame));
+ saved_regs = get_frame_saved_regs (get_next_frame (frame));
+ if (read_memory_integer (saved_regs[FLAGS_REGNUM],
TARGET_PTR_BIT / 8) & 0x2)
{
- pc = read_memory_integer (saved_regs.regs[31],
+ pc = read_memory_integer (saved_regs[31],
TARGET_PTR_BIT / 8) & ~0x3;
/* Syscalls are really two frames. The syscall stub itself
with a return pointer in %rp and the kernel call with
a return pointer in %r31. We return the %rp variant
if %r31 is the same as frame->pc. */
- if (pc == frame->pc)
- pc = read_memory_integer (saved_regs.regs[RP_REGNUM],
+ if (pc == get_frame_pc (frame))
+ pc = read_memory_integer (saved_regs[RP_REGNUM],
TARGET_PTR_BIT / 8) & ~0x3;
}
else
- pc = read_memory_integer (saved_regs.regs[RP_REGNUM],
+ pc = read_memory_integer (saved_regs[RP_REGNUM],
TARGET_PTR_BIT / 8) & ~0x3;
}
else if (rp_offset == 0)
else
{
old_pc = pc;
- pc = read_memory_integer (frame->frame + rp_offset,
+ pc = read_memory_integer (get_frame_base (frame) + rp_offset,
TARGET_PTR_BIT / 8) & ~0x3;
}
}
in a system call. */
void
-init_extra_frame_info (int fromleaf, struct frame_info *frame)
+hppa_init_extra_frame_info (int fromleaf, struct frame_info *frame)
{
int flags;
int framesize;
- if (frame->next && !fromleaf)
+ if (get_next_frame (frame) && !fromleaf)
return;
- /* If the next frame represents a frameless function invocation
- then we have to do some adjustments that are normally done by
- FRAME_CHAIN. (FRAME_CHAIN is not called in this case.) */
+ /* If the next frame represents a frameless function invocation then
+ we have to do some adjustments that are normally done by
+ DEPRECATED_FRAME_CHAIN. (DEPRECATED_FRAME_CHAIN is not called in
+ this case.) */
if (fromleaf)
{
/* Find the framesize of *this* frame without peeking at the PC
in the current frame structure (it isn't set yet). */
- framesize = find_proc_framesize (FRAME_SAVED_PC (get_next_frame (frame)));
+ framesize = find_proc_framesize (DEPRECATED_FRAME_SAVED_PC (get_next_frame (frame)));
/* Now adjust our base frame accordingly. If we have a frame pointer
use it, else subtract the size of this frame from the current
frame. (we always want frame->frame to point at the lowest address
in the frame). */
if (framesize == -1)
- frame->frame = TARGET_READ_FP ();
+ deprecated_update_frame_base_hack (frame, deprecated_read_fp ());
else
- frame->frame -= framesize;
+ deprecated_update_frame_base_hack (frame, get_frame_base (frame) - framesize);
return;
}
flags = read_register (FLAGS_REGNUM);
if (flags & 2) /* In system call? */
- frame->pc = read_register (31) & ~0x3;
+ deprecated_update_frame_pc_hack (frame, read_register (31) & ~0x3);
/* The outermost frame is always derived from PC-framesize
explain, but the parent *always* creates some stack space for
the child. So the child actually does have a frame of some
sorts, and its base is the high address in its parent's frame. */
- framesize = find_proc_framesize (frame->pc);
+ framesize = find_proc_framesize (get_frame_pc (frame));
if (framesize == -1)
- frame->frame = TARGET_READ_FP ();
+ deprecated_update_frame_base_hack (frame, deprecated_read_fp ());
else
- frame->frame = read_register (SP_REGNUM) - framesize;
+ deprecated_update_frame_base_hack (frame, read_register (SP_REGNUM) - framesize);
}
\f
-/* Given a GDB frame, determine the address of the calling function's frame.
- This will be used to create a new GDB frame struct, and then
- INIT_EXTRA_FRAME_INFO and INIT_FRAME_PC will be called for the new frame.
+/* Given a GDB frame, determine the address of the calling function's
+ frame. This will be used to create a new GDB frame struct, and
+ then DEPRECATED_INIT_EXTRA_FRAME_INFO and DEPRECATED_INIT_FRAME_PC
+ will be called for the new frame.
This may involve searching through prologues for several functions
at boundaries where GCC calls HP C code, or where code which has
a frame pointer calls code without a frame pointer. */
CORE_ADDR
-frame_chain (struct frame_info *frame)
+hppa_frame_chain (struct frame_info *frame)
{
int my_framesize, caller_framesize;
struct unwind_table_entry *u;
/* A frame in the current frame list, or zero. */
struct frame_info *saved_regs_frame = 0;
- /* Where the registers were saved in saved_regs_frame.
- If saved_regs_frame is zero, this is garbage. */
- struct frame_saved_regs saved_regs;
+ /* Where the registers were saved in saved_regs_frame. If
+ saved_regs_frame is zero, this is garbage. */
+ CORE_ADDR *saved_regs = NULL;
CORE_ADDR caller_pc;
/* If this is a threaded application, and we see the
routine "__pthread_exit", treat it as the stack root
for this thread. */
- min_frame_symbol = lookup_minimal_symbol_by_pc (frame->pc);
- frame_symbol = find_pc_function (frame->pc);
+ min_frame_symbol = lookup_minimal_symbol_by_pc (get_frame_pc (frame));
+ frame_symbol = find_pc_function (get_frame_pc (frame));
if ((min_frame_symbol != 0) /* && (frame_symbol == 0) */ )
{
pthread library itself, you'd get errors.
So for today, we don't make that check. */
- frame_symbol_name = SYMBOL_NAME (min_frame_symbol);
+ frame_symbol_name = DEPRECATED_SYMBOL_NAME (min_frame_symbol);
if (frame_symbol_name != 0)
{
if (0 == strncmp (frame_symbol_name,
are easy; at *sp we have a full save state strucutre which we can
pull the old stack pointer from. Also see frame_saved_pc for
code to dig a saved PC out of the save state structure. */
- if (pc_in_interrupt_handler (frame->pc))
- frame_base = read_memory_integer (frame->frame + SP_REGNUM * 4,
+ if (pc_in_interrupt_handler (get_frame_pc (frame)))
+ frame_base = read_memory_integer (get_frame_base (frame) + SP_REGNUM * 4,
TARGET_PTR_BIT / 8);
#ifdef FRAME_BASE_BEFORE_SIGTRAMP
- else if (frame->signal_handler_caller)
+ else if ((get_frame_type (frame) == SIGTRAMP_FRAME))
{
FRAME_BASE_BEFORE_SIGTRAMP (frame, &frame_base);
}
#endif
else
- frame_base = frame->frame;
+ frame_base = get_frame_base (frame);
/* Get frame sizes for the current frame and the frame of the
caller. */
- my_framesize = find_proc_framesize (frame->pc);
- caller_pc = FRAME_SAVED_PC (frame);
+ my_framesize = find_proc_framesize (get_frame_pc (frame));
+ caller_pc = DEPRECATED_FRAME_SAVED_PC (frame);
/* If we can't determine the caller's PC, then it's not likely we can
really determine anything meaningful about its frame. We'll consider
if (caller_pc == (CORE_ADDR) 0)
return (CORE_ADDR) 0;
- caller_framesize = find_proc_framesize (FRAME_SAVED_PC (frame));
+ caller_framesize = find_proc_framesize (DEPRECATED_FRAME_SAVED_PC (frame));
/* If caller does not have a frame pointer, then its frame
can be found at current_frame - caller_framesize. */
We use information from unwind descriptors to determine if %r3
is saved into the stack (Entry_GR field has this information). */
- for (tmp_frame = frame; tmp_frame; tmp_frame = tmp_frame->next)
+ for (tmp_frame = frame; tmp_frame; tmp_frame = get_next_frame (tmp_frame))
{
- u = find_unwind_entry (tmp_frame->pc);
+ u = find_unwind_entry (get_frame_pc (tmp_frame));
if (!u)
{
the dynamic linker will give you a PC that has none. Thus, I've
disabled this warning. */
#if 0
- warning ("Unable to find unwind for PC 0x%x -- Help!", tmp_frame->pc);
+ warning ("Unable to find unwind for PC 0x%x -- Help!", get_frame_pc (tmp_frame));
#endif
return (CORE_ADDR) 0;
}
if (u->Save_SP
- || tmp_frame->signal_handler_caller
- || pc_in_interrupt_handler (tmp_frame->pc))
+ || (get_frame_type (tmp_frame) == SIGTRAMP_FRAME)
+ || pc_in_interrupt_handler (get_frame_pc (tmp_frame)))
break;
/* Entry_GR specifies the number of callee-saved general registers
/* The unwind entry claims that r3 is saved here. However,
in optimized code, GCC often doesn't actually save r3.
We'll discover this if we look at the prologue. */
- get_frame_saved_regs (tmp_frame, &saved_regs);
+ hppa_frame_init_saved_regs (tmp_frame);
+ saved_regs = get_frame_saved_regs (tmp_frame);
saved_regs_frame = tmp_frame;
/* If we have an address for r3, that's good. */
- if (saved_regs.regs[FP_REGNUM])
+ if (saved_regs[DEPRECATED_FP_REGNUM])
break;
}
}
/* We may have walked down the chain into a function with a frame
pointer. */
if (u->Save_SP
- && !tmp_frame->signal_handler_caller
- && !pc_in_interrupt_handler (tmp_frame->pc))
+ && !(get_frame_type (tmp_frame) == SIGTRAMP_FRAME)
+ && !pc_in_interrupt_handler (get_frame_pc (tmp_frame)))
{
- return read_memory_integer (tmp_frame->frame, TARGET_PTR_BIT / 8);
+ return read_memory_integer (get_frame_base (tmp_frame), TARGET_PTR_BIT / 8);
}
/* %r3 was saved somewhere in the stack. Dig it out. */
else
system call has a variable sized stack frame. */
if (tmp_frame != saved_regs_frame)
- get_frame_saved_regs (tmp_frame, &saved_regs);
+ {
+ hppa_frame_init_saved_regs (tmp_frame);
+ saved_regs = get_frame_saved_regs (tmp_frame);
+ }
/* Abominable hack. */
if (current_target.to_has_execution == 0
- && ((saved_regs.regs[FLAGS_REGNUM]
- && (read_memory_integer (saved_regs.regs[FLAGS_REGNUM],
+ && ((saved_regs[FLAGS_REGNUM]
+ && (read_memory_integer (saved_regs[FLAGS_REGNUM],
TARGET_PTR_BIT / 8)
& 0x2))
- || (saved_regs.regs[FLAGS_REGNUM] == 0
+ || (saved_regs[FLAGS_REGNUM] == 0
&& read_register (FLAGS_REGNUM) & 0x2)))
{
- u = find_unwind_entry (FRAME_SAVED_PC (frame));
+ u = find_unwind_entry (DEPRECATED_FRAME_SAVED_PC (frame));
if (!u)
{
- return read_memory_integer (saved_regs.regs[FP_REGNUM],
+ return read_memory_integer (saved_regs[DEPRECATED_FP_REGNUM],
TARGET_PTR_BIT / 8);
}
else
}
}
- return read_memory_integer (saved_regs.regs[FP_REGNUM],
+ return read_memory_integer (saved_regs[DEPRECATED_FP_REGNUM],
TARGET_PTR_BIT / 8);
}
}
{
/* Get the innermost frame. */
tmp_frame = frame;
- while (tmp_frame->next != NULL)
- tmp_frame = tmp_frame->next;
+ while (get_next_frame (tmp_frame) != NULL)
+ tmp_frame = get_next_frame (tmp_frame);
if (tmp_frame != saved_regs_frame)
- get_frame_saved_regs (tmp_frame, &saved_regs);
+ {
+ hppa_frame_init_saved_regs (tmp_frame);
+ saved_regs = get_frame_saved_regs (tmp_frame);
+ }
/* Abominable hack. See above. */
if (current_target.to_has_execution == 0
- && ((saved_regs.regs[FLAGS_REGNUM]
- && (read_memory_integer (saved_regs.regs[FLAGS_REGNUM],
+ && ((saved_regs[FLAGS_REGNUM]
+ && (read_memory_integer (saved_regs[FLAGS_REGNUM],
TARGET_PTR_BIT / 8)
& 0x2))
- || (saved_regs.regs[FLAGS_REGNUM] == 0
+ || (saved_regs[FLAGS_REGNUM] == 0
&& read_register (FLAGS_REGNUM) & 0x2)))
{
- u = find_unwind_entry (FRAME_SAVED_PC (frame));
+ u = find_unwind_entry (DEPRECATED_FRAME_SAVED_PC (frame));
if (!u)
{
- return read_memory_integer (saved_regs.regs[FP_REGNUM],
+ return read_memory_integer (saved_regs[DEPRECATED_FP_REGNUM],
TARGET_PTR_BIT / 8);
}
else
/* The value in %r3 was never saved into the stack (thus %r3 still
holds the value of the previous frame pointer). */
- return TARGET_READ_FP ();
+ return deprecated_read_fp ();
}
}
\f
struct unwind_table_entry *u, *next_u = NULL;
struct frame_info *next;
- if (!chain)
- return 0;
-
- u = find_unwind_entry (thisframe->pc);
+ u = find_unwind_entry (get_frame_pc (thisframe));
if (u == NULL)
return 1;
indistinguishable (as nearly as I can tell) from the symbol for a function
which is (legitimately, since it is in the user's namespace)
named Ltext_end, so we can't just ignore it. */
- msym_us = lookup_minimal_symbol_by_pc (FRAME_SAVED_PC (thisframe));
+ msym_us = lookup_minimal_symbol_by_pc (DEPRECATED_FRAME_SAVED_PC (thisframe));
msym_start = lookup_minimal_symbol ("_start", NULL, NULL);
if (msym_us
&& msym_start
next = get_next_frame (thisframe);
if (next)
- next_u = find_unwind_entry (next->pc);
+ next_u = find_unwind_entry (get_frame_pc (next));
/* If this frame does not save SP, has no stack, isn't a stub,
and doesn't "call" an interrupt routine or signal handler caller,
then its not valid. */
if (u->Save_SP || u->Total_frame_size || u->stub_unwind.stub_type != 0
- || (thisframe->next && thisframe->next->signal_handler_caller)
+ || (get_next_frame (thisframe) && (get_frame_type (get_next_frame (thisframe)) == SIGTRAMP_FRAME))
|| (next_u && next_u->HP_UX_interrupt_marker))
return 1;
- if (pc_in_linker_stub (thisframe->pc))
+ if (pc_in_linker_stub (get_frame_pc (thisframe)))
return 1;
return 0;
}
-/*
- These functions deal with saving and restoring register state
- around a function call in the inferior. They keep the stack
- double-word aligned; eventually, on an hp700, the stack will have
- to be aligned to a 64-byte boundary. */
+/* These functions deal with saving and restoring register state
+ around a function call in the inferior. They keep the stack
+ double-word aligned; eventually, on an hp700, the stack will have
+ to be aligned to a 64-byte boundary. */
void
-push_dummy_frame (struct inferior_status *inf_status)
+hppa_push_dummy_frame (void)
{
CORE_ADDR sp, pc, pcspace;
register int regnum;
CORE_ADDR int_buffer;
double freg_buffer;
- /* Oh, what a hack. If we're trying to perform an inferior call
- while the inferior is asleep, we have to make sure to clear
- the "in system call" bit in the flag register (the call will
- start after the syscall returns, so we're no longer in the system
- call!) This state is kept in "inf_status", change it there.
-
- We also need a number of horrid hacks to deal with lossage in the
- PC queue registers (apparently they're not valid when the in syscall
- bit is set). */
- pc = target_read_pc (inferior_ptid);
+ pc = hppa_target_read_pc (inferior_ptid);
int_buffer = read_register (FLAGS_REGNUM);
if (int_buffer & 0x2)
{
- unsigned int sid;
- int_buffer &= ~0x2;
- write_inferior_status_register (inf_status, 0, int_buffer);
- write_inferior_status_register (inf_status, PCOQ_HEAD_REGNUM, pc + 0);
- write_inferior_status_register (inf_status, PCOQ_TAIL_REGNUM, pc + 4);
- sid = (pc >> 30) & 0x3;
+ const unsigned int sid = (pc >> 30) & 0x3;
if (sid == 0)
pcspace = read_register (SR4_REGNUM);
else
pcspace = read_register (SR4_REGNUM + 4 + sid);
- write_inferior_status_register (inf_status, PCSQ_HEAD_REGNUM, pcspace);
- write_inferior_status_register (inf_status, PCSQ_TAIL_REGNUM, pcspace);
}
else
pcspace = read_register (PCSQ_HEAD_REGNUM);
/* The 32bit and 64bit ABIs save the return pointer into different
stack slots. */
- if (REGISTER_SIZE == 8)
- write_memory (sp - 16, (char *) &int_buffer, REGISTER_SIZE);
+ if (DEPRECATED_REGISTER_SIZE == 8)
+ write_memory (sp - 16, (char *) &int_buffer, DEPRECATED_REGISTER_SIZE);
else
- write_memory (sp - 20, (char *) &int_buffer, REGISTER_SIZE);
+ write_memory (sp - 20, (char *) &int_buffer, DEPRECATED_REGISTER_SIZE);
- int_buffer = TARGET_READ_FP ();
- write_memory (sp, (char *) &int_buffer, REGISTER_SIZE);
+ int_buffer = deprecated_read_fp ();
+ write_memory (sp, (char *) &int_buffer, DEPRECATED_REGISTER_SIZE);
- write_register (FP_REGNUM, sp);
+ write_register (DEPRECATED_FP_REGNUM, sp);
- sp += 2 * REGISTER_SIZE;
+ sp += 2 * DEPRECATED_REGISTER_SIZE;
for (regnum = 1; regnum < 32; regnum++)
- if (regnum != RP_REGNUM && regnum != FP_REGNUM)
+ if (regnum != RP_REGNUM && regnum != DEPRECATED_FP_REGNUM)
sp = push_word (sp, read_register (regnum));
/* This is not necessary for the 64bit ABI. In fact it is dangerous. */
- if (REGISTER_SIZE != 8)
+ if (DEPRECATED_REGISTER_SIZE != 8)
sp += 4;
for (regnum = FP0_REGNUM; regnum < NUM_REGS; regnum++)
{
- read_register_bytes (REGISTER_BYTE (regnum), (char *) &freg_buffer, 8);
+ deprecated_read_register_bytes (REGISTER_BYTE (regnum),
+ (char *) &freg_buffer, 8);
sp = push_bytes (sp, (char *) &freg_buffer, 8);
}
sp = push_word (sp, read_register (IPSW_REGNUM));
static void
find_dummy_frame_regs (struct frame_info *frame,
- struct frame_saved_regs *frame_saved_regs)
+ CORE_ADDR frame_saved_regs[])
{
- CORE_ADDR fp = frame->frame;
+ CORE_ADDR fp = get_frame_base (frame);
int i;
/* The 32bit and 64bit ABIs save RP into different locations. */
- if (REGISTER_SIZE == 8)
- frame_saved_regs->regs[RP_REGNUM] = (fp - 16) & ~0x3;
+ if (DEPRECATED_REGISTER_SIZE == 8)
+ frame_saved_regs[RP_REGNUM] = (fp - 16) & ~0x3;
else
- frame_saved_regs->regs[RP_REGNUM] = (fp - 20) & ~0x3;
+ frame_saved_regs[RP_REGNUM] = (fp - 20) & ~0x3;
- frame_saved_regs->regs[FP_REGNUM] = fp;
+ frame_saved_regs[DEPRECATED_FP_REGNUM] = fp;
- frame_saved_regs->regs[1] = fp + (2 * REGISTER_SIZE);
+ frame_saved_regs[1] = fp + (2 * DEPRECATED_REGISTER_SIZE);
- for (fp += 3 * REGISTER_SIZE, i = 3; i < 32; i++)
+ for (fp += 3 * DEPRECATED_REGISTER_SIZE, i = 3; i < 32; i++)
{
- if (i != FP_REGNUM)
+ if (i != DEPRECATED_FP_REGNUM)
{
- frame_saved_regs->regs[i] = fp;
- fp += REGISTER_SIZE;
+ frame_saved_regs[i] = fp;
+ fp += DEPRECATED_REGISTER_SIZE;
}
}
/* This is not necessary or desirable for the 64bit ABI. */
- if (REGISTER_SIZE != 8)
+ if (DEPRECATED_REGISTER_SIZE != 8)
fp += 4;
for (i = FP0_REGNUM; i < NUM_REGS; i++, fp += 8)
- frame_saved_regs->regs[i] = fp;
-
- frame_saved_regs->regs[IPSW_REGNUM] = fp;
- frame_saved_regs->regs[SAR_REGNUM] = fp + REGISTER_SIZE;
- frame_saved_regs->regs[PCOQ_HEAD_REGNUM] = fp + 2 * REGISTER_SIZE;
- frame_saved_regs->regs[PCSQ_HEAD_REGNUM] = fp + 3 * REGISTER_SIZE;
- frame_saved_regs->regs[PCOQ_TAIL_REGNUM] = fp + 4 * REGISTER_SIZE;
- frame_saved_regs->regs[PCSQ_TAIL_REGNUM] = fp + 5 * REGISTER_SIZE;
+ frame_saved_regs[i] = fp;
+
+ frame_saved_regs[IPSW_REGNUM] = fp;
+ frame_saved_regs[SAR_REGNUM] = fp + DEPRECATED_REGISTER_SIZE;
+ frame_saved_regs[PCOQ_HEAD_REGNUM] = fp + 2 * DEPRECATED_REGISTER_SIZE;
+ frame_saved_regs[PCSQ_HEAD_REGNUM] = fp + 3 * DEPRECATED_REGISTER_SIZE;
+ frame_saved_regs[PCOQ_TAIL_REGNUM] = fp + 4 * DEPRECATED_REGISTER_SIZE;
+ frame_saved_regs[PCSQ_TAIL_REGNUM] = fp + 5 * DEPRECATED_REGISTER_SIZE;
}
void
register struct frame_info *frame = get_current_frame ();
register CORE_ADDR fp, npc, target_pc;
register int regnum;
- struct frame_saved_regs fsr;
+ CORE_ADDR *fsr;
double freg_buffer;
- fp = FRAME_FP (frame);
- get_frame_saved_regs (frame, &fsr);
+ fp = get_frame_base (frame);
+ hppa_frame_init_saved_regs (frame);
+ fsr = get_frame_saved_regs (frame);
#ifndef NO_PC_SPACE_QUEUE_RESTORE
- if (fsr.regs[IPSW_REGNUM]) /* Restoring a call dummy frame */
- restore_pc_queue (&fsr);
+ if (fsr[IPSW_REGNUM]) /* Restoring a call dummy frame */
+ restore_pc_queue (fsr);
#endif
for (regnum = 31; regnum > 0; regnum--)
- if (fsr.regs[regnum])
- write_register (regnum, read_memory_integer (fsr.regs[regnum],
- REGISTER_SIZE));
+ if (fsr[regnum])
+ write_register (regnum, read_memory_integer (fsr[regnum],
+ DEPRECATED_REGISTER_SIZE));
for (regnum = NUM_REGS - 1; regnum >= FP0_REGNUM; regnum--)
- if (fsr.regs[regnum])
+ if (fsr[regnum])
{
- read_memory (fsr.regs[regnum], (char *) &freg_buffer, 8);
- write_register_bytes (REGISTER_BYTE (regnum), (char *) &freg_buffer, 8);
+ read_memory (fsr[regnum], (char *) &freg_buffer, 8);
+ deprecated_write_register_bytes (REGISTER_BYTE (regnum),
+ (char *) &freg_buffer, 8);
}
- if (fsr.regs[IPSW_REGNUM])
+ if (fsr[IPSW_REGNUM])
write_register (IPSW_REGNUM,
- read_memory_integer (fsr.regs[IPSW_REGNUM],
- REGISTER_SIZE));
+ read_memory_integer (fsr[IPSW_REGNUM],
+ DEPRECATED_REGISTER_SIZE));
- if (fsr.regs[SAR_REGNUM])
+ if (fsr[SAR_REGNUM])
write_register (SAR_REGNUM,
- read_memory_integer (fsr.regs[SAR_REGNUM],
- REGISTER_SIZE));
+ read_memory_integer (fsr[SAR_REGNUM],
+ DEPRECATED_REGISTER_SIZE));
/* If the PC was explicitly saved, then just restore it. */
- if (fsr.regs[PCOQ_TAIL_REGNUM])
+ if (fsr[PCOQ_TAIL_REGNUM])
{
- npc = read_memory_integer (fsr.regs[PCOQ_TAIL_REGNUM],
- REGISTER_SIZE);
+ npc = read_memory_integer (fsr[PCOQ_TAIL_REGNUM],
+ DEPRECATED_REGISTER_SIZE);
write_register (PCOQ_TAIL_REGNUM, npc);
}
/* Else use the value in %rp to set the new PC. */
write_pc (npc);
}
- write_register (FP_REGNUM, read_memory_integer (fp, REGISTER_SIZE));
+ write_register (DEPRECATED_FP_REGNUM, read_memory_integer (fp, DEPRECATED_REGISTER_SIZE));
- if (fsr.regs[IPSW_REGNUM]) /* call dummy */
+ if (fsr[IPSW_REGNUM]) /* call dummy */
write_register (SP_REGNUM, fp - 48);
else
write_register (SP_REGNUM, fp);
Don't skip through the trampoline if we're popping a dummy frame. */
target_pc = SKIP_TRAMPOLINE_CODE (npc & ~0x3) & ~0x3;
- if (target_pc && !fsr.regs[IPSW_REGNUM])
+ if (target_pc && !fsr[IPSW_REGNUM])
{
struct symtab_and_line sal;
struct breakpoint *breakpoint;
for "return_command" will print the frame we returned to. */
sal = find_pc_line (target_pc, 0);
sal.pc = target_pc;
- breakpoint = set_momentary_breakpoint (sal, NULL, bp_finish);
+ breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_finish);
breakpoint->silent = 1;
/* So we can clean things up. */
queue space registers. */
static int
-restore_pc_queue (struct frame_saved_regs *fsr)
+restore_pc_queue (CORE_ADDR *fsr)
{
CORE_ADDR pc = read_pc ();
- CORE_ADDR new_pc = read_memory_integer (fsr->regs[PCOQ_HEAD_REGNUM],
+ CORE_ADDR new_pc = read_memory_integer (fsr[PCOQ_HEAD_REGNUM],
TARGET_PTR_BIT / 8);
struct target_waitstatus w;
int insn_count;
So, load up the registers and single step until we are in the
right place. */
- write_register (21, read_memory_integer (fsr->regs[PCSQ_HEAD_REGNUM],
- REGISTER_SIZE));
+ write_register (21, read_memory_integer (fsr[PCSQ_HEAD_REGNUM],
+ DEPRECATED_REGISTER_SIZE));
write_register (22, new_pc);
for (insn_count = 0; insn_count < 3; insn_count++)
the left. We do this by promoting them to full-width,
although the ABI says to pad them with garbage. */
if (is_integral_type (arg_type)
- && TYPE_LENGTH (arg_type) < REGISTER_SIZE)
+ && TYPE_LENGTH (arg_type) < DEPRECATED_REGISTER_SIZE)
{
args[i] = value_cast ((TYPE_UNSIGNED (arg_type)
? builtin_type_unsigned_long
/* Align the size of the argument to the word size for this
target. */
- bytes_reserved = (lengths[i] + REGISTER_SIZE - 1) & -REGISTER_SIZE;
+ bytes_reserved = (lengths[i] + DEPRECATED_REGISTER_SIZE - 1) & -DEPRECATED_REGISTER_SIZE;
offset[i] = cum_bytes_reserved;
if (bytes_reserved > 8)
{
/* Round up the offset to a multiple of two slots. */
- int new_offset = ((offset[i] + 2*REGISTER_SIZE-1)
- & -(2*REGISTER_SIZE));
+ int new_offset = ((offset[i] + 2*DEPRECATED_REGISTER_SIZE-1)
+ & -(2*DEPRECATED_REGISTER_SIZE));
/* Note the space we've wasted, if any. */
bytes_reserved += new_offset - offset[i];
/* Align the size of the argument to the word size for this
target. */
- bytes_reserved = (lengths[i] + REGISTER_SIZE - 1) & -REGISTER_SIZE;
+ bytes_reserved = (lengths[i] + DEPRECATED_REGISTER_SIZE - 1) & -DEPRECATED_REGISTER_SIZE;
- offset[i] = cum_bytes_reserved + lengths[i];
+ offset[i] = (cum_bytes_reserved
+ + (lengths[i] > 4 ? bytes_reserved : lengths[i]));
/* If the argument is a double word argument, then it needs to be
double word aligned. */
- if ((bytes_reserved == 2 * REGISTER_SIZE)
- && (offset[i] % 2 * REGISTER_SIZE))
+ if ((bytes_reserved == 2 * DEPRECATED_REGISTER_SIZE)
+ && (offset[i] % 2 * DEPRECATED_REGISTER_SIZE))
{
int new_offset = 0;
/* BYTES_RESERVED is already aligned to the word, so we put
This will leave one empty word on the stack, and one unused
register as mandated by the ABI. */
- new_offset = ((offset[i] + 2 * REGISTER_SIZE - 1)
- & -(2 * REGISTER_SIZE));
+ new_offset = ((offset[i] + 2 * DEPRECATED_REGISTER_SIZE - 1)
+ & -(2 * DEPRECATED_REGISTER_SIZE));
- if ((new_offset - offset[i]) >= 2 * REGISTER_SIZE)
+ if ((new_offset - offset[i]) >= 2 * DEPRECATED_REGISTER_SIZE)
{
- bytes_reserved += REGISTER_SIZE;
- offset[i] += REGISTER_SIZE;
+ bytes_reserved += DEPRECATED_REGISTER_SIZE;
+ offset[i] += DEPRECATED_REGISTER_SIZE;
}
}
args = alloca (sizeof (struct value *) * 8); /* 6 for the arguments and one null one??? */
funcval = find_function_in_inferior ("__d_shl_get");
- get_sym = lookup_symbol ("__d_shl_get", NULL, VAR_NAMESPACE, NULL, NULL);
+ get_sym = lookup_symbol ("__d_shl_get", NULL, VAR_DOMAIN, NULL, NULL);
buff_minsym = lookup_minimal_symbol ("__buffer", NULL, NULL);
msymbol = lookup_minimal_symbol ("__shldp", NULL, NULL);
- symbol2 = lookup_symbol ("__shldp", NULL, VAR_NAMESPACE, NULL, NULL);
+ symbol2 = lookup_symbol ("__shldp", NULL, VAR_DOMAIN, NULL, NULL);
endo_buff_addr = SYMBOL_VALUE_ADDRESS (buff_minsym);
- namelen = strlen (SYMBOL_NAME (function));
+ namelen = strlen (DEPRECATED_SYMBOL_NAME (function));
value_return_addr = endo_buff_addr + namelen;
ftype = check_typedef (SYMBOL_TYPE (get_sym));
/* set up stuff needed by __d_shl_get in buffer in end.o */
- target_write_memory (endo_buff_addr, SYMBOL_NAME (function), namelen);
+ target_write_memory (endo_buff_addr, DEPRECATED_SYMBOL_NAME (function), namelen);
target_write_memory (value_return_addr, (char *) &tmp, 4);
/* Cover routine for find_stub_with_shl_get to pass to catch_errors */
static int
-cover_find_stub_with_shl_get (PTR args_untyped)
+cover_find_stub_with_shl_get (void *args_untyped)
{
args_for_find_stub *args = args_untyped;
args->return_val = find_stub_with_shl_get (args->msym, args->solib_handle);
into a call sequence of the above form stored at DUMMYNAME.
On the hppa we need to call the stack dummy through $$dyncall.
- Therefore our version of FIX_CALL_DUMMY takes an extra argument,
- real_pc, which is the location where gdb should start up the
- inferior to do the function call.
+ Therefore our version of DEPRECATED_FIX_CALL_DUMMY takes an extra
+ argument, real_pc, which is the location where gdb should start up
+ the inferior to do the function call.
This has to work across several versions of hpux, bsd, osf1. It has to
work regardless of what compiler was used to build the inferior program.
at *(fun+4). Note the call dummy is *NOT* allowed to
trash %r19 before calling the target function. */
write_register (19, read_memory_integer ((fun & ~0x3) + 4,
- REGISTER_SIZE));
+ DEPRECATED_REGISTER_SIZE));
/* Now get the real address for the function we are calling, it's
at *fun. */
{
stub_symbol
= lookup_minimal_symbol_solib_trampoline
- (SYMBOL_NAME (funsymbol), NULL, objfile);
+ (DEPRECATED_SYMBOL_NAME (funsymbol), NULL, objfile);
if (!stub_symbol)
- stub_symbol = lookup_minimal_symbol (SYMBOL_NAME (funsymbol),
+ stub_symbol = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (funsymbol),
NULL, objfile);
/* Found a symbol with the right name. */
new_stub = find_stub_with_shl_get (fmsymbol, solib_handle);
if (new_stub == 0)
- error ("Can't find an import stub for %s", SYMBOL_NAME (fmsymbol));
+ error ("Can't find an import stub for %s", DEPRECATED_SYMBOL_NAME (fmsymbol));
/* We have to store the address of the stub in __shlib_funcptr. */
msymbol = lookup_minimal_symbol ("__shlib_funcptr", NULL,
if (flags & 2)
return pc;
#ifndef GDB_TARGET_IS_PA_ELF
- else if (som_solib_get_got_by_pc (target_read_pc (inferior_ptid)))
+ else if (som_solib_get_got_by_pc (hppa_target_read_pc (inferior_ptid)))
return pc;
#endif
else
#endif
}
-
-
-
/* If the pid is in a syscall, then the FP register is not readable.
We'll return zero in that case, rather than attempting to read it
and cause a warning. */
+
CORE_ADDR
-target_read_fp (int pid)
+hppa_read_fp (int pid)
{
int flags = read_register (FLAGS_REGNUM);
}
/* This is the only site that may directly read_register () the FP
- register. All others must use TARGET_READ_FP (). */
- return read_register (FP_REGNUM);
+ register. All others must use deprecated_read_fp (). */
+ return read_register (DEPRECATED_FP_REGNUM);
}
+CORE_ADDR
+hppa_target_read_fp (void)
+{
+ return hppa_read_fp (PIDGET (inferior_ptid));
+}
/* Get the PC from %r31 if currently in a syscall. Also mask out privilege
bits. */
CORE_ADDR
-target_read_pc (ptid_t ptid)
+hppa_target_read_pc (ptid_t ptid)
{
int flags = read_register_pid (FLAGS_REGNUM, ptid);
PC value into %r31. */
void
-target_write_pc (CORE_ADDR v, ptid_t ptid)
+hppa_target_write_pc (CORE_ADDR v, ptid_t ptid)
{
int flags = read_register_pid (FLAGS_REGNUM, ptid);
void
pa_do_registers_info (int regnum, int fpregs)
{
- char raw_regs[REGISTER_BYTES];
+ char *raw_regs = alloca (DEPRECATED_REGISTER_BYTES);
int i;
/* Make a copy of gdb's save area (may cause actual
reads from the target). */
for (i = 0; i < NUM_REGS; i++)
- read_relative_register_raw_bytes (i, raw_regs + REGISTER_BYTE (i));
+ frame_register_read (deprecated_selected_frame, i, raw_regs + REGISTER_BYTE (i));
if (regnum == -1)
pa_print_registers (raw_regs, regnum, fpregs);
if (!is_pa_2)
{
- printf_unfiltered ("%s %x\n", REGISTER_NAME (regnum), reg_val[1]);
+ printf_unfiltered ("%s %lx\n", REGISTER_NAME (regnum), reg_val[1]);
}
else
{
/* Fancy % formats to prevent leading zeros. */
if (reg_val[0] == 0)
- printf_unfiltered ("%s %x\n", REGISTER_NAME (regnum), reg_val[1]);
+ printf_unfiltered ("%s %lx\n", REGISTER_NAME (regnum), reg_val[1]);
else
- printf_unfiltered ("%s %x%8.8x\n", REGISTER_NAME (regnum),
+ printf_unfiltered ("%s %lx%8.8lx\n", REGISTER_NAME (regnum),
reg_val[0], reg_val[1]);
}
}
pa_do_strcat_registers_info (int regnum, int fpregs, struct ui_file *stream,
enum precision_type precision)
{
- char raw_regs[REGISTER_BYTES];
+ char *raw_regs = alloca (DEPRECATED_REGISTER_BYTES);
int i;
/* Make a copy of gdb's save area (may cause actual
reads from the target). */
for (i = 0; i < NUM_REGS; i++)
- read_relative_register_raw_bytes (i, raw_regs + REGISTER_BYTE (i));
+ frame_register_read (deprecated_selected_frame, i, raw_regs + REGISTER_BYTE (i));
if (regnum == -1)
pa_strcat_registers (raw_regs, regnum, fpregs, stream);
if (!is_pa_2)
{
- fprintf_unfiltered (stream, "%s %x", REGISTER_NAME (regnum), reg_val[1]);
+ fprintf_unfiltered (stream, "%s %lx", REGISTER_NAME (regnum), reg_val[1]);
}
else
{
/* Fancy % formats to prevent leading zeros. */
if (reg_val[0] == 0)
- fprintf_unfiltered (stream, "%s %x", REGISTER_NAME (regnum),
+ fprintf_unfiltered (stream, "%s %lx", REGISTER_NAME (regnum),
reg_val[1]);
else
- fprintf_unfiltered (stream, "%s %x%8.8x", REGISTER_NAME (regnum),
+ fprintf_unfiltered (stream, "%s %lx%8.8lx", REGISTER_NAME (regnum),
reg_val[0], reg_val[1]);
}
}
int start;
- char buf[MAX_REGISTER_RAW_SIZE];
+ char buf[MAX_REGISTER_SIZE];
long long reg_val;
if (!know_which)
/* Being big-endian, on this machine the low bits
(the ones we want to look at) are in the second longword. */
long_val = extract_signed_integer (&raw_val[1], 4);
- printf_filtered ("%10.10s: %8x ",
+ printf_filtered ("%10.10s: %8lx ",
REGISTER_NAME (regnum), long_val);
}
else
{
/* raw_val = extract_signed_integer(&raw_val, 8); */
if (raw_val[0] == 0)
- printf_filtered ("%10.10s: %8x ",
+ printf_filtered ("%10.10s: %8lx ",
REGISTER_NAME (regnum), raw_val[1]);
else
- printf_filtered ("%10.10s: %8x%8.8x ",
+ printf_filtered ("%10.10s: %8lx%8.8lx ",
REGISTER_NAME (regnum),
raw_val[0], raw_val[1]);
}
/* Being big-endian, on this machine the low bits
(the ones we want to look at) are in the second longword. */
long_val = extract_signed_integer (&raw_val[1], 4);
- fprintf_filtered (stream, "%8.8s: %8x ", REGISTER_NAME (i + (j * 18)), long_val);
+ fprintf_filtered (stream, "%8.8s: %8lx ",
+ REGISTER_NAME (i + (j * 18)), long_val);
}
else
{
/* raw_val = extract_signed_integer(&raw_val, 8); */
if (raw_val[0] == 0)
- fprintf_filtered (stream, "%8.8s: %8x ", REGISTER_NAME (i + (j * 18)),
- raw_val[1]);
+ fprintf_filtered (stream, "%8.8s: %8lx ",
+ REGISTER_NAME (i + (j * 18)), raw_val[1]);
else
- fprintf_filtered (stream, "%8.8s: %8x%8.8x ", REGISTER_NAME (i + (j * 18)),
- raw_val[0], raw_val[1]);
+ fprintf_filtered (stream, "%8.8s: %8lx%8.8lx ",
+ REGISTER_NAME (i + (j * 18)), raw_val[0],
+ raw_val[1]);
}
}
fprintf_unfiltered (stream, "\n");
static void
pa_print_fp_reg (int i)
{
- char raw_buffer[MAX_REGISTER_RAW_SIZE];
- char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];
+ char raw_buffer[MAX_REGISTER_SIZE];
+ char virtual_buffer[MAX_REGISTER_SIZE];
/* Get 32bits of data. */
- read_relative_register_raw_bytes (i, raw_buffer);
+ frame_register_read (deprecated_selected_frame, i, raw_buffer);
/* Put it in the buffer. No conversions are ever necessary. */
memcpy (virtual_buffer, raw_buffer, REGISTER_RAW_SIZE (i));
if ((i % 2) == 0)
{
/* Get the data in raw format for the 2nd half. */
- read_relative_register_raw_bytes (i + 1, raw_buffer);
+ frame_register_read (deprecated_selected_frame, i + 1, raw_buffer);
/* Copy it into the appropriate part of the virtual buffer. */
memcpy (virtual_buffer + REGISTER_RAW_SIZE (i), raw_buffer,
static void
pa_strcat_fp_reg (int i, struct ui_file *stream, enum precision_type precision)
{
- char raw_buffer[MAX_REGISTER_RAW_SIZE];
- char virtual_buffer[MAX_REGISTER_VIRTUAL_SIZE];
+ char raw_buffer[MAX_REGISTER_SIZE];
+ char virtual_buffer[MAX_REGISTER_SIZE];
fputs_filtered (REGISTER_NAME (i), stream);
print_spaces_filtered (8 - strlen (REGISTER_NAME (i)), stream);
/* Get 32bits of data. */
- read_relative_register_raw_bytes (i, raw_buffer);
+ frame_register_read (deprecated_selected_frame, i, raw_buffer);
/* Put it in the buffer. No conversions are ever necessary. */
memcpy (virtual_buffer, raw_buffer, REGISTER_RAW_SIZE (i));
if (precision == double_precision && (i % 2) == 0)
{
- char raw_buf[MAX_REGISTER_RAW_SIZE];
+ char raw_buf[MAX_REGISTER_SIZE];
/* Get the data in raw format for the 2nd half. */
- read_relative_register_raw_bytes (i + 1, raw_buf);
+ frame_register_read (deprecated_selected_frame, i + 1, raw_buf);
/* Copy it into the appropriate part of the virtual buffer. */
memcpy (virtual_buffer + REGISTER_RAW_SIZE (i), raw_buf, REGISTER_RAW_SIZE (i));
just shared library trampolines (import, export). */
int
-in_solib_call_trampoline (CORE_ADDR pc, char *name)
+hppa_in_solib_call_trampoline (CORE_ADDR pc, char *name)
{
struct minimal_symbol *minsym;
struct unwind_table_entry *u;
return 1;
minsym = lookup_minimal_symbol_by_pc (pc);
- if (minsym && strcmp (SYMBOL_NAME (minsym), ".stub") == 0)
+ if (minsym && strcmp (DEPRECATED_SYMBOL_NAME (minsym), ".stub") == 0)
return 1;
/* Get the unwind descriptor corresponding to PC, return zero
just shared library trampolines (import, export). */
int
-in_solib_return_trampoline (CORE_ADDR pc, char *name)
+hppa_in_solib_return_trampoline (CORE_ADDR pc, char *name)
{
struct unwind_table_entry *u;
used in dynamic executables. */
CORE_ADDR
-skip_trampoline_code (CORE_ADDR pc, char *name)
+hppa_skip_trampoline_code (CORE_ADDR pc)
{
long orig_pc = pc;
long prev_inst, curr_inst, loc;
ALL_MSYMBOLS (objfile, msymbol)
{
if (MSYMBOL_TYPE (msymbol) == mst_text
- && STREQ (SYMBOL_NAME (msymbol), SYMBOL_NAME (msym)))
+ && STREQ (DEPRECATED_SYMBOL_NAME (msymbol), DEPRECATED_SYMBOL_NAME (msym)))
{
function_found = 1;
break;
stubsym = lookup_minimal_symbol_by_pc (loc);
if (stubsym == NULL)
{
- warning ("Unable to find symbol for 0x%x", loc);
+ warning ("Unable to find symbol for 0x%lx", loc);
return orig_pc == pc ? 0 : pc & ~0x3;
}
- libsym = lookup_minimal_symbol (SYMBOL_NAME (stubsym), NULL, NULL);
+ libsym = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (stubsym), NULL, NULL);
if (libsym == NULL)
{
warning ("Unable to find library symbol for %s\n",
- SYMBOL_NAME (stubsym));
+ DEPRECATED_SYMBOL_NAME (stubsym));
return orig_pc == pc ? 0 : pc & ~0x3;
}
for (i = 3; i < u->Entry_GR + 3; i++)
{
/* Frame pointer gets saved into a special location. */
- if (u->Save_SP && i == FP_REGNUM)
+ if (u->Save_SP && i == DEPRECATED_FP_REGNUM)
continue;
save_gr |= (1 << i);
return (skip_prologue_hard_way (pc));
}
-/* Put here the code to store, into a struct frame_saved_regs,
- the addresses of the saved registers of frame described by FRAME_INFO.
- This includes special registers such as pc and fp saved in special
- ways in the stack frame. sp is even more special:
- the address we return for it IS the sp for the next frame. */
+/* Put here the code to store, into the SAVED_REGS, the addresses of
+ the saved registers of frame described by FRAME_INFO. This
+ includes special registers such as pc and fp saved in special ways
+ in the stack frame. sp is even more special: the address we return
+ for it IS the sp for the next frame. */
void
hppa_frame_find_saved_regs (struct frame_info *frame_info,
- struct frame_saved_regs *frame_saved_regs)
+ CORE_ADDR frame_saved_regs[])
{
CORE_ADDR pc;
struct unwind_table_entry *u;
int final_iteration;
/* Zero out everything. */
- memset (frame_saved_regs, '\0', sizeof (struct frame_saved_regs));
+ memset (frame_saved_regs, '\0', SIZEOF_FRAME_SAVED_REGS);
/* Call dummy frames always look the same, so there's no need to
examine the dummy code to determine locations of saved registers;
instead, let find_dummy_frame_regs fill in the correct offsets
for the saved registers. */
- if ((frame_info->pc >= frame_info->frame
- && frame_info->pc <= (frame_info->frame
- /* A call dummy is sized in words, but it is
- actually a series of instructions. Account
- for that scaling factor. */
- + ((REGISTER_SIZE / INSTRUCTION_SIZE)
- * CALL_DUMMY_LENGTH)
- /* Similarly we have to account for 64bit
- wide register saves. */
- + (32 * REGISTER_SIZE)
- /* We always consider FP regs 8 bytes long. */
- + (NUM_REGS - FP0_REGNUM) * 8
- /* Similarly we have to account for 64bit
- wide register saves. */
- + (6 * REGISTER_SIZE))))
+ if ((get_frame_pc (frame_info) >= get_frame_base (frame_info)
+ && (get_frame_pc (frame_info)
+ <= (get_frame_base (frame_info)
+ /* A call dummy is sized in words, but it is actually a
+ series of instructions. Account for that scaling
+ factor. */
+ + ((DEPRECATED_REGISTER_SIZE / INSTRUCTION_SIZE)
+ * DEPRECATED_CALL_DUMMY_LENGTH)
+ /* Similarly we have to account for 64bit wide register
+ saves. */
+ + (32 * DEPRECATED_REGISTER_SIZE)
+ /* We always consider FP regs 8 bytes long. */
+ + (NUM_REGS - FP0_REGNUM) * 8
+ /* Similarly we have to account for 64bit wide register
+ saves. */
+ + (6 * DEPRECATED_REGISTER_SIZE)))))
find_dummy_frame_regs (frame_info, frame_saved_regs);
/* Interrupt handlers are special too. They lay out the register
state in the exact same order as the register numbers in GDB. */
- if (pc_in_interrupt_handler (frame_info->pc))
+ if (pc_in_interrupt_handler (get_frame_pc (frame_info)))
{
for (i = 0; i < NUM_REGS; i++)
{
/* SP is a little special. */
if (i == SP_REGNUM)
- frame_saved_regs->regs[SP_REGNUM]
- = read_memory_integer (frame_info->frame + SP_REGNUM * 4,
+ frame_saved_regs[SP_REGNUM]
+ = read_memory_integer (get_frame_base (frame_info) + SP_REGNUM * 4,
TARGET_PTR_BIT / 8);
else
- frame_saved_regs->regs[i] = frame_info->frame + i * 4;
+ frame_saved_regs[i] = get_frame_base (frame_info) + i * 4;
}
return;
}
#ifdef FRAME_FIND_SAVED_REGS_IN_SIGTRAMP
/* Handle signal handler callers. */
- if (frame_info->signal_handler_caller)
+ if ((get_frame_type (frame_info) == SIGTRAMP_FRAME))
{
FRAME_FIND_SAVED_REGS_IN_SIGTRAMP (frame_info, frame_saved_regs);
return;
/* Get the starting address of the function referred to by the PC
saved in frame. */
- pc = get_pc_function_start (frame_info->pc);
+ pc = get_frame_func (frame_info);
/* Yow! */
u = find_unwind_entry (pc);
for (i = 3; i < u->Entry_GR + 3; i++)
{
/* Frame pointer gets saved into a special location. */
- if (u->Save_SP && i == FP_REGNUM)
+ if (u->Save_SP && i == DEPRECATED_FP_REGNUM)
continue;
save_gr |= (1 << i);
/* The frame always represents the value of %sp at entry to the
current function (and is thus equivalent to the "saved" stack
pointer. */
- frame_saved_regs->regs[SP_REGNUM] = frame_info->frame;
+ frame_saved_regs[SP_REGNUM] = get_frame_base (frame_info);
/* Loop until we find everything of interest or hit a branch.
GCC code. */
final_iteration = 0;
while ((save_gr || save_fr || save_rp || save_sp || stack_remaining > 0)
- && pc <= frame_info->pc)
+ && pc <= get_frame_pc (frame_info))
{
status = target_read_memory (pc, buf, 4);
inst = extract_unsigned_integer (buf, 4);
if (inst == 0x6bc23fd9) /* stw rp,-0x14(sr0,sp) */
{
save_rp = 0;
- frame_saved_regs->regs[RP_REGNUM] = frame_info->frame - 20;
+ frame_saved_regs[RP_REGNUM] = get_frame_base (frame_info) - 20;
}
else if (inst == 0x0fc212c1) /* std rp,-0x10(sr0,sp) */
{
save_rp = 0;
- frame_saved_regs->regs[RP_REGNUM] = frame_info->frame - 16;
+ frame_saved_regs[RP_REGNUM] = get_frame_base (frame_info) - 16;
}
/* Note if we saved SP into the stack. This also happens to indicate
if ( (inst & 0xffffc000) == 0x6fc10000 /* stw,ma r1,N(sr0,sp) */
|| (inst & 0xffffc00c) == 0x73c10008) /* std,ma r1,N(sr0,sp) */
{
- frame_saved_regs->regs[FP_REGNUM] = frame_info->frame;
+ frame_saved_regs[DEPRECATED_FP_REGNUM] = get_frame_base (frame_info);
save_sp = 0;
}
/* Account for general and floating-point register saves. */
reg = inst_saves_gr (inst);
if (reg >= 3 && reg <= 18
- && (!u->Save_SP || reg != FP_REGNUM))
+ && (!u->Save_SP || reg != DEPRECATED_FP_REGNUM))
{
save_gr &= ~(1 << reg);
/* stwm with a positive displacement is a *post modify*. */
if ((inst >> 26) == 0x1b
&& extract_14 (inst) >= 0)
- frame_saved_regs->regs[reg] = frame_info->frame;
+ frame_saved_regs[reg] = get_frame_base (frame_info);
/* A std has explicit post_modify forms. */
else if ((inst & 0xfc00000c0) == 0x70000008)
- frame_saved_regs->regs[reg] = frame_info->frame;
+ frame_saved_regs[reg] = get_frame_base (frame_info);
else
{
CORE_ADDR offset;
/* Handle code with and without frame pointers. */
if (u->Save_SP)
- frame_saved_regs->regs[reg]
- = frame_info->frame + offset;
+ frame_saved_regs[reg]
+ = get_frame_base (frame_info) + offset;
else
- frame_saved_regs->regs[reg]
- = (frame_info->frame + (u->Total_frame_size << 3)
+ frame_saved_regs[reg]
+ = (get_frame_base (frame_info) + (u->Total_frame_size << 3)
+ offset);
}
}
/* 1st HP CC FP register store. After this instruction
we've set enough state that the GCC and HPCC code are
both handled in the same manner. */
- frame_saved_regs->regs[reg + FP4_REGNUM + 4] = frame_info->frame;
+ frame_saved_regs[reg + FP4_REGNUM + 4] = get_frame_base (frame_info);
fp_loc = 8;
}
else
{
- frame_saved_regs->regs[reg + FP0_REGNUM + 4]
- = frame_info->frame + fp_loc;
+ frame_saved_regs[reg + FP0_REGNUM + 4]
+ = get_frame_base (frame_info) + fp_loc;
fp_loc += 8;
}
}
}
}
+/* XXX - deprecated. This is a compatibility function for targets
+ that do not yet implement DEPRECATED_FRAME_INIT_SAVED_REGS. */
+/* Find the addresses in which registers are saved in FRAME. */
+
+void
+hppa_frame_init_saved_regs (struct frame_info *frame)
+{
+ if (get_frame_saved_regs (frame) == NULL)
+ frame_saved_regs_zalloc (frame);
+ hppa_frame_find_saved_regs (frame, get_frame_saved_regs (frame));
+}
/* Exception handling support for the HP-UX ANSI C++ compiler.
The compiler (aCC) provides a callback for exception events;
args.return_val = 0;
recurse++;
- catch_errors (cover_find_stub_with_shl_get, (PTR) &args, message,
+ catch_errors (cover_find_stub_with_shl_get, &args, message,
RETURN_MASK_ALL);
eh_notify_callback_addr = args.return_val;
recurse--;
/* Next look for the catch enable flag provided in end.o */
sym = lookup_symbol (HP_ACC_EH_catch_catch, (struct block *) NULL,
- VAR_NAMESPACE, 0, (struct symtab **) NULL);
+ VAR_DOMAIN, 0, (struct symtab **) NULL);
if (sym) /* sometimes present in debug info */
{
eh_catch_catch_addr = SYMBOL_VALUE_ADDRESS (sym);
/* Next look for the catch enable flag provided end.o */
sym = lookup_symbol (HP_ACC_EH_catch_catch, (struct block *) NULL,
- VAR_NAMESPACE, 0, (struct symtab **) NULL);
+ VAR_DOMAIN, 0, (struct symtab **) NULL);
if (sym) /* sometimes present in debug info */
{
eh_catch_throw_addr = SYMBOL_VALUE_ADDRESS (sym);
{
break_callback_sal = (struct symtab_and_line *) xmalloc (sizeof (struct symtab_and_line));
}
- INIT_SAL (break_callback_sal);
+ init_sal (break_callback_sal);
break_callback_sal->symtab = NULL;
break_callback_sal->pc = eh_break_addr;
break_callback_sal->line = 0;
if (level != 0)
return (struct exception_event_record *) NULL;
- select_frame (fi, -1);
+ select_frame (fi);
/* Read in the arguments */
/* __d_eh_notify_callback() is called with 3 arguments:
if (level != 0)
return (struct exception_event_record *) NULL;
- select_frame (fi, -1);
- throw_addr = fi->pc;
+ select_frame (fi);
+ throw_addr = get_frame_pc (fi);
/* Go back to original (top) frame */
- select_frame (curr_frame, -1);
+ select_frame (curr_frame);
current_ex_event.kind = (enum exception_event_kind) event_kind;
current_ex_event.throw_sal = find_pc_line (throw_addr, 1);
return ¤t_ex_event;
}
+/* Instead of this nasty cast, add a method pvoid() that prints out a
+ host VOID data type (remember %p isn't portable). */
+
+static CORE_ADDR
+hppa_pointer_to_address_hack (void *ptr)
+{
+ gdb_assert (sizeof (ptr) == TYPE_LENGTH (builtin_type_void_data_ptr));
+ return POINTER_TO_ADDRESS (builtin_type_void_data_ptr, &ptr);
+}
+
static void
unwind_command (char *exp, int from_tty)
{
return;
}
- printf_unfiltered ("unwind_table_entry (0x%x):\n", u);
+ printf_unfiltered ("unwind_table_entry (0x%s):\n",
+ paddr_nz (hppa_pointer_to_address_hack (u)));
printf_unfiltered ("\tregion_start = ");
print_address (u->region_start, gdb_stdout);
pin (Total_frame_size);
}
-#ifdef PREPARE_TO_PROCEED
+void
+hppa_skip_permanent_breakpoint (void)
+{
+ /* To step over a breakpoint instruction on the PA takes some
+ fiddling with the instruction address queue.
-/* If the user has switched threads, and there is a breakpoint
- at the old thread's pc location, then switch to that thread
- and return TRUE, else return FALSE and don't do a thread
- switch (or rather, don't seem to have done a thread switch).
+ When we stop at a breakpoint, the IA queue front (the instruction
+ we're executing now) points at the breakpoint instruction, and
+ the IA queue back (the next instruction to execute) points to
+ whatever instruction we would execute after the breakpoint, if it
+ were an ordinary instruction. This is the case even if the
+ breakpoint is in the delay slot of a branch instruction.
- Ptrace-based gdb will always return FALSE to the thread-switch
- query, and thus also to PREPARE_TO_PROCEED.
+ Clearly, to step past the breakpoint, we need to set the queue
+ front to the back. But what do we put in the back? What
+ instruction comes after that one? Because of the branch delay
+ slot, the next insn is always at the back + 4. */
+ write_register (PCOQ_HEAD_REGNUM, read_register (PCOQ_TAIL_REGNUM));
+ write_register (PCSQ_HEAD_REGNUM, read_register (PCSQ_TAIL_REGNUM));
- The important thing is whether there is a BPT instruction,
- not how many user breakpoints there are. So we have to worry
- about things like these:
+ write_register (PCOQ_TAIL_REGNUM, read_register (PCOQ_TAIL_REGNUM) + 4);
+ /* We can leave the tail's space the same, since there's no jump. */
+}
- o Non-bp stop -- NO
+/* Copy the function value from VALBUF into the proper location
+ for a function return.
- o User hits bp, no switch -- NO
+ Called only in the context of the "return" command. */
- o User hits bp, switches threads -- YES
+void
+hppa_store_return_value (struct type *type, char *valbuf)
+{
+ /* For software floating point, the return value goes into the
+ integer registers. But we do not have any flag to key this on,
+ so we always store the value into the integer registers.
+
+ If its a float value, then we also store it into the floating
+ point registers. */
+ deprecated_write_register_bytes (REGISTER_BYTE (28)
+ + (TYPE_LENGTH (type) > 4
+ ? (8 - TYPE_LENGTH (type))
+ : (4 - TYPE_LENGTH (type))),
+ valbuf, TYPE_LENGTH (type));
+ if (TYPE_CODE (type) == TYPE_CODE_FLT)
+ deprecated_write_register_bytes (REGISTER_BYTE (FP4_REGNUM),
+ valbuf, TYPE_LENGTH (type));
+}
- o User hits bp, deletes bp, switches threads -- NO
+/* Copy the function's return value into VALBUF.
- o User hits bp, deletes one of two or more bps
- at that PC, user switches threads -- YES
+ This function is called only in the context of "target function calls",
+ ie. when the debugger forces a function to be called in the child, and
+ when the debugger forces a fucntion to return prematurely via the
+ "return" command. */
- o Plus, since we're buffering events, the user may have hit a
- breakpoint, deleted the breakpoint and then gotten another
- hit on that same breakpoint on another thread which
- actually hit before the delete. (FIXME in breakpoint.c
- so that "dead" breakpoints are ignored?) -- NO
+void
+hppa_extract_return_value (struct type *type, char *regbuf, char *valbuf)
+{
+ if (TYPE_CODE (type) == TYPE_CODE_FLT)
+ memcpy (valbuf,
+ (char *)regbuf + REGISTER_BYTE (FP4_REGNUM),
+ TYPE_LENGTH (type));
+ else
+ memcpy (valbuf,
+ ((char *)regbuf
+ + REGISTER_BYTE (28)
+ + (TYPE_LENGTH (type) > 4
+ ? (8 - TYPE_LENGTH (type))
+ : (4 - TYPE_LENGTH (type)))),
+ TYPE_LENGTH (type));
+}
- For these reasons, we have to violate information hiding and
- call "breakpoint_here_p". If core gdb thinks there is a bpt
- here, that's what counts, as core gdb is the one which is
- putting the BPT instruction in and taking it out.
+int
+hppa_reg_struct_has_addr (int gcc_p, struct type *type)
+{
+ /* On the PA, any pass-by-value structure > 8 bytes is actually passed
+ via a pointer regardless of its type or the compiler used. */
+ return (TYPE_LENGTH (type) > 8);
+}
- Note that this implementation is potentially redundant now that
- default_prepare_to_proceed() has been added.
+int
+hppa_inner_than (CORE_ADDR lhs, CORE_ADDR rhs)
+{
+ /* Stack grows upward */
+ return (lhs > rhs);
+}
+
+CORE_ADDR
+hppa_stack_align (CORE_ADDR sp)
+{
+ /* elz: adjust the quantity to the next highest value which is
+ 64-bit aligned. This is used in valops.c, when the sp is adjusted.
+ On hppa the sp must always be kept 64-bit aligned */
+ return ((sp % 8) ? (sp + 7) & -8 : sp);
+}
- FIXME This may not support switching threads after Ctrl-C
- correctly. The default implementation does support this. */
int
-hppa_prepare_to_proceed (void)
+hppa_pc_requires_run_before_use (CORE_ADDR pc)
{
- pid_t old_thread;
- pid_t current_thread;
+ /* Sometimes we may pluck out a minimal symbol that has a negative address.
+
+ An example of this occurs when an a.out is linked against a foo.sl.
+ The foo.sl defines a global bar(), and the a.out declares a signature
+ for bar(). However, the a.out doesn't directly call bar(), but passes
+ its address in another call.
+
+ If you have this scenario and attempt to "break bar" before running,
+ gdb will find a minimal symbol for bar() in the a.out. But that
+ symbol's address will be negative. What this appears to denote is
+ an index backwards from the base of the procedure linkage table (PLT)
+ into the data linkage table (DLT), the end of which is contiguous
+ with the start of the PLT. This is clearly not a valid address for
+ us to set a breakpoint on.
+
+ Note that one must be careful in how one checks for a negative address.
+ 0xc0000000 is a legitimate address of something in a shared text
+ segment, for example. Since I don't know what the possible range
+ is of these "really, truly negative" addresses that come from the
+ minimal symbols, I'm resorting to the gross hack of checking the
+ top byte of the address for all 1's. Sigh. */
+
+ return (!target_has_stack && (pc & 0xFF000000));
+}
- old_thread = hppa_switched_threads (PIDGET (inferior_ptid));
- if (old_thread != 0)
- {
- /* Switched over from "old_thread". Try to do
- as little work as possible, 'cause mostly
- we're going to switch back. */
- CORE_ADDR new_pc;
- CORE_ADDR old_pc = read_pc ();
-
- /* Yuk, shouldn't use global to specify current
- thread. But that's how gdb does it. */
- current_thread = PIDGET (inferior_ptid);
- inferior_ptid = pid_to_ptid (old_thread);
-
- new_pc = read_pc ();
- if (new_pc != old_pc /* If at same pc, no need */
- && breakpoint_here_p (new_pc))
- {
- /* User hasn't deleted the BP.
- Return TRUE, finishing switch to "old_thread". */
- flush_cached_frames ();
- registers_changed ();
-#if 0
- printf ("---> PREPARE_TO_PROCEED (was %d, now %d)!\n",
- current_thread, PIDGET (inferior_ptid));
-#endif
+int
+hppa_instruction_nullified (void)
+{
+ /* brobecker 2002/11/07: Couldn't we use a ULONGEST here? It would
+ avoid the type cast. I'm leaving it as is for now as I'm doing
+ semi-mechanical multiarching-related changes. */
+ const int ipsw = (int) read_register (IPSW_REGNUM);
+ const int flags = (int) read_register (FLAGS_REGNUM);
- return 1;
- }
+ return ((ipsw & 0x00200000) && !(flags & 0x2));
+}
- /* Otherwise switch back to the user-chosen thread. */
- inferior_ptid = pid_to_ptid (current_thread);
- new_pc = read_pc (); /* Re-prime register cache */
- }
+int
+hppa_register_raw_size (int reg_nr)
+{
+ /* All registers have the same size. */
+ return DEPRECATED_REGISTER_SIZE;
+}
- return 0;
+/* Index within the register vector of the first byte of the space i
+ used for register REG_NR. */
+
+int
+hppa_register_byte (int reg_nr)
+{
+ return reg_nr * 4;
}
-#endif /* PREPARE_TO_PROCEED */
+
+/* Return the GDB type object for the "standard" data type of data
+ in register N. */
+
+struct type *
+hppa_register_virtual_type (int reg_nr)
+{
+ if (reg_nr < FP4_REGNUM)
+ return builtin_type_int;
+ else
+ return builtin_type_float;
+}
+
+/* Store the address of the place in which to copy the structure the
+ subroutine will return. This is called from call_function. */
void
-hppa_skip_permanent_breakpoint (void)
+hppa_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
{
- /* To step over a breakpoint instruction on the PA takes some
- fiddling with the instruction address queue.
+ write_register (28, addr);
+}
- When we stop at a breakpoint, the IA queue front (the instruction
- we're executing now) points at the breakpoint instruction, and
- the IA queue back (the next instruction to execute) points to
- whatever instruction we would execute after the breakpoint, if it
- were an ordinary instruction. This is the case even if the
- breakpoint is in the delay slot of a branch instruction.
+CORE_ADDR
+hppa_extract_struct_value_address (char *regbuf)
+{
+ /* Extract from an array REGBUF containing the (raw) register state
+ the address in which a function should return its structure value,
+ as a CORE_ADDR (or an expression that can be used as one). */
+ /* FIXME: brobecker 2002-12-26.
+ The current implementation is historical, but we should eventually
+ implement it in a more robust manner as it relies on the fact that
+ the address size is equal to the size of an int* _on the host_...
+ One possible implementation that crossed my mind is to use
+ extract_address. */
+ return (*(int *)(regbuf + REGISTER_BYTE (28)));
+}
- Clearly, to step past the breakpoint, we need to set the queue
- front to the back. But what do we put in the back? What
- instruction comes after that one? Because of the branch delay
- slot, the next insn is always at the back + 4. */
- write_register (PCOQ_HEAD_REGNUM, read_register (PCOQ_TAIL_REGNUM));
- write_register (PCSQ_HEAD_REGNUM, read_register (PCSQ_TAIL_REGNUM));
+/* Return True if REGNUM is not a register available to the user
+ through ptrace(). */
- write_register (PCOQ_TAIL_REGNUM, read_register (PCOQ_TAIL_REGNUM) + 4);
- /* We can leave the tail's space the same, since there's no jump. */
+int
+hppa_cannot_store_register (int regnum)
+{
+ return (regnum == 0
+ || regnum == PCSQ_HEAD_REGNUM
+ || (regnum >= PCSQ_TAIL_REGNUM && regnum < IPSW_REGNUM)
+ || (regnum > IPSW_REGNUM && regnum < FP4_REGNUM));
+
+}
+
+CORE_ADDR
+hppa_frame_args_address (struct frame_info *fi)
+{
+ return get_frame_base (fi);
+}
+
+CORE_ADDR
+hppa_frame_locals_address (struct frame_info *fi)
+{
+ return get_frame_base (fi);
+}
+
+CORE_ADDR
+hppa_smash_text_address (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
+ this means that "addresses" in a text section therefore include a
+ privilege level, and thus symbol tables should contain these bits.
+ This seems like a bonehead thing to do--anyway, it seems to work
+ for our purposes to just ignore those bits. */
+
+ return (addr &= ~0x3);
+}
+
+/* Get the ith function argument for the current function. */
+CORE_ADDR
+hppa_fetch_pointer_argument (struct frame_info *frame, int argi,
+ struct type *type)
+{
+ CORE_ADDR addr;
+ frame_read_register (frame, R0_REGNUM + 26 - argi, &addr);
+ return addr;
+}
+
+static struct gdbarch *
+hppa_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
+{
+ 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);
+ if (arches != NULL)
+ return (arches->gdbarch);
+
+ /* If none found, then allocate and initialize one. */
+ gdbarch = gdbarch_alloc (&info, NULL);
+
+ /* Hook in ABI-specific overrides, if they have been registered. */
+ gdbarch_init_osabi (info, gdbarch);
+
+ set_gdbarch_reg_struct_has_addr (gdbarch, hppa_reg_struct_has_addr);
+ set_gdbarch_function_start_offset (gdbarch, 0);
+ set_gdbarch_skip_prologue (gdbarch, hppa_skip_prologue);
+ set_gdbarch_skip_trampoline_code (gdbarch, hppa_skip_trampoline_code);
+ set_gdbarch_in_solib_call_trampoline (gdbarch, hppa_in_solib_call_trampoline);
+ set_gdbarch_in_solib_return_trampoline (gdbarch,
+ hppa_in_solib_return_trampoline);
+ set_gdbarch_deprecated_saved_pc_after_call (gdbarch, hppa_saved_pc_after_call);
+ set_gdbarch_inner_than (gdbarch, hppa_inner_than);
+ set_gdbarch_stack_align (gdbarch, hppa_stack_align);
+ set_gdbarch_decr_pc_after_break (gdbarch, 0);
+ set_gdbarch_deprecated_register_size (gdbarch, 4);
+ set_gdbarch_num_regs (gdbarch, hppa_num_regs);
+ set_gdbarch_deprecated_fp_regnum (gdbarch, 3);
+ set_gdbarch_sp_regnum (gdbarch, 30);
+ set_gdbarch_fp0_regnum (gdbarch, 64);
+ set_gdbarch_pc_regnum (gdbarch, PCOQ_HEAD_REGNUM);
+ set_gdbarch_npc_regnum (gdbarch, PCOQ_TAIL_REGNUM);
+ set_gdbarch_register_raw_size (gdbarch, hppa_register_raw_size);
+ set_gdbarch_deprecated_register_bytes (gdbarch, hppa_num_regs * 4);
+ set_gdbarch_register_byte (gdbarch, hppa_register_byte);
+ set_gdbarch_register_virtual_size (gdbarch, hppa_register_raw_size);
+ set_gdbarch_deprecated_max_register_raw_size (gdbarch, 4);
+ set_gdbarch_deprecated_max_register_virtual_size (gdbarch, 8);
+ set_gdbarch_register_virtual_type (gdbarch, hppa_register_virtual_type);
+ set_gdbarch_deprecated_store_struct_return (gdbarch, hppa_store_struct_return);
+ set_gdbarch_deprecated_extract_return_value (gdbarch,
+ hppa_extract_return_value);
+ set_gdbarch_use_struct_convention (gdbarch, hppa_use_struct_convention);
+ set_gdbarch_deprecated_store_return_value (gdbarch, hppa_store_return_value);
+ set_gdbarch_deprecated_extract_struct_value_address
+ (gdbarch, hppa_extract_struct_value_address);
+ set_gdbarch_cannot_store_register (gdbarch, hppa_cannot_store_register);
+ set_gdbarch_deprecated_init_extra_frame_info (gdbarch, hppa_init_extra_frame_info);
+ set_gdbarch_deprecated_frame_chain (gdbarch, hppa_frame_chain);
+ set_gdbarch_deprecated_frame_chain_valid (gdbarch, hppa_frame_chain_valid);
+ set_gdbarch_frameless_function_invocation
+ (gdbarch, hppa_frameless_function_invocation);
+ set_gdbarch_deprecated_frame_saved_pc (gdbarch, hppa_frame_saved_pc);
+ set_gdbarch_frame_args_address (gdbarch, hppa_frame_args_address);
+ set_gdbarch_frame_locals_address (gdbarch, hppa_frame_locals_address);
+ set_gdbarch_frame_args_skip (gdbarch, 0);
+ set_gdbarch_deprecated_push_dummy_frame (gdbarch, hppa_push_dummy_frame);
+ set_gdbarch_deprecated_pop_frame (gdbarch, hppa_pop_frame);
+ set_gdbarch_deprecated_call_dummy_length (gdbarch, INSTRUCTION_SIZE * 28);
+ /* set_gdbarch_deprecated_fix_call_dummy (gdbarch, hppa_fix_call_dummy); */
+ set_gdbarch_deprecated_push_arguments (gdbarch, hppa_push_arguments);
+ set_gdbarch_smash_text_address (gdbarch, hppa_smash_text_address);
+ set_gdbarch_believe_pcc_promotion (gdbarch, 1);
+ set_gdbarch_read_pc (gdbarch, hppa_target_read_pc);
+ set_gdbarch_write_pc (gdbarch, hppa_target_write_pc);
+ set_gdbarch_deprecated_target_read_fp (gdbarch, hppa_target_read_fp);
+
+ /* Helper for function argument information. */
+ set_gdbarch_fetch_pointer_argument (gdbarch, hppa_fetch_pointer_argument);
+
+ return gdbarch;
+}
+
+static void
+hppa_dump_tdep (struct gdbarch *current_gdbarch, struct ui_file *file)
+{
+ /* Nothing to print for the moment. */
}
void
_initialize_hppa_tdep (void)
{
- tm_print_insn = print_insn_hppa;
+ struct cmd_list_element *c;
+ void break_at_finish_command (char *arg, int from_tty);
+ void tbreak_at_finish_command (char *arg, int from_tty);
+ void break_at_finish_at_depth_command (char *arg, int from_tty);
+
+ gdbarch_register (bfd_arch_hppa, hppa_gdbarch_init, hppa_dump_tdep);
+ deprecated_tm_print_insn = print_insn_hppa;
add_cmd ("unwind", class_maintenance, unwind_command,
"Print unwind table entry at given address.",
&maintenanceprintlist);
+
+ deprecate_cmd (add_com ("xbreak", class_breakpoint,
+ break_at_finish_command,
+ concat ("Set breakpoint at procedure exit. \n\
+Argument may be function name, or \"*\" and an address.\n\
+If function is specified, break at end of code for that function.\n\
+If an address is specified, break at the end of the function that contains \n\
+that exact address.\n",
+ "With no arg, uses current execution address of selected stack frame.\n\
+This is useful for breaking on return to a stack frame.\n\
+\n\
+Multiple breakpoints at one place are permitted, and useful if conditional.\n\
+\n\
+Do \"help breakpoints\" for info on other commands dealing with breakpoints.", NULL)), NULL);
+ deprecate_cmd (add_com_alias ("xb", "xbreak", class_breakpoint, 1), NULL);
+ deprecate_cmd (add_com_alias ("xbr", "xbreak", class_breakpoint, 1), NULL);
+ deprecate_cmd (add_com_alias ("xbre", "xbreak", class_breakpoint, 1), NULL);
+ deprecate_cmd (add_com_alias ("xbrea", "xbreak", class_breakpoint, 1), NULL);
+
+ deprecate_cmd (c = add_com ("txbreak", class_breakpoint,
+ tbreak_at_finish_command,
+"Set temporary breakpoint at procedure exit. Either there should\n\
+be no argument or the argument must be a depth.\n"), NULL);
+ set_cmd_completer (c, location_completer);
+
+ if (xdb_commands)
+ deprecate_cmd (add_com ("bx", class_breakpoint,
+ break_at_finish_at_depth_command,
+"Set breakpoint at procedure exit. Either there should\n\
+be no argument or the argument must be a depth.\n"), NULL);
}
+
projects / deliverable / binutils-gdb.git / blobdiff