#include "arch-utils.h"
#include "osabi.h"
#include "block.h"
+#include "infcall.h"
#include "elf-bfd.h"
/* Similarly, this represents exactly the conversion performed by
the STS instruction. */
-static inline void
+static void
alpha_sts (void *out, const void *in)
{
ULONGEST reg, mem;
structure to be returned is passed as a hidden first argument. */
static CORE_ADDR
-alpha_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr,
+alpha_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)
};
struct alpha_arg *alpha_args
= (struct alpha_arg *) alloca (nargs * sizeof (struct alpha_arg));
- register struct alpha_arg *m_arg;
+ struct alpha_arg *m_arg;
char arg_reg_buffer[ALPHA_REGISTER_SIZE * ALPHA_NUM_ARG_REGS];
int required_arg_regs;
+ CORE_ADDR func_addr = find_function_addr (function, NULL);
/* The ABI places the address of the called function in T12. */
regcache_cooked_write_signed (regcache, ALPHA_T12_REGNUM, func_addr);
return info;
}
-/* Return the address of REGNO in a sigtramp frame. Since this is all
- arithmetic, it doesn't seem worthwhile to cache it. */
-
-#ifndef SIGFRAME_PC_OFF
-#define SIGFRAME_PC_OFF (2 * 8)
-#define SIGFRAME_REGSAVE_OFF (4 * 8)
-#define SIGFRAME_FPREGSAVE_OFF (SIGFRAME_REGSAVE_OFF + 32 * 8 + 8)
-#endif
+/* Return the address of REGNUM in a sigtramp frame. Since this is
+ all arithmetic, it doesn't seem worthwhile to cache it. */
static CORE_ADDR
-alpha_sigtramp_register_address (CORE_ADDR sigcontext_addr, unsigned int regno)
+alpha_sigtramp_register_address (CORE_ADDR sigcontext_addr, int regnum)
{
- if (regno < 32)
- return sigcontext_addr + SIGFRAME_REGSAVE_OFF + regno * 8;
- if (regno >= ALPHA_FP0_REGNUM && regno < ALPHA_FP0_REGNUM + 32)
- return sigcontext_addr + SIGFRAME_FPREGSAVE_OFF + regno * 8;
- if (regno == ALPHA_PC_REGNUM)
- return sigcontext_addr + SIGFRAME_PC_OFF;
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+
+ if (regnum >= 0 && regnum < 32)
+ return sigcontext_addr + tdep->sc_regs_offset + regnum * 8;
+ else if (regnum >= ALPHA_FP0_REGNUM && regnum < ALPHA_FP0_REGNUM + 32)
+ return sigcontext_addr + tdep->sc_fpregs_offset + regnum * 8;
+ else if (regnum == ALPHA_PC_REGNUM)
+ return sigcontext_addr + tdep->sc_pc_offset;
return 0;
}
};
static const struct frame_unwind *
-alpha_sigtramp_frame_p (CORE_ADDR pc)
+alpha_sigtramp_frame_sniffer (struct frame_info *next_frame)
{
+ CORE_ADDR pc = frame_pc_unwind (next_frame);
char *name;
- /* We shouldn't even bother to try if the OSABI didn't register
- a sigcontext_addr handler. */
- if (!gdbarch_tdep (current_gdbarch)->sigcontext_addr)
+ /* NOTE: cagney/2004-04-30: Do not copy/clone this code. Instead
+ look at tramp-frame.h and other simplier per-architecture
+ sigtramp unwinders. */
+
+ /* We shouldn't even bother to try if the OSABI didn't register a
+ sigcontext_addr handler or pc_in_sigtramp hander. */
+ if (gdbarch_tdep (current_gdbarch)->sigcontext_addr == NULL)
+ return NULL;
+ if (gdbarch_tdep (current_gdbarch)->pc_in_sigtramp == NULL)
return NULL;
/* Otherwise we should be in a signal frame. */
find_pc_partial_function (pc, &name, NULL, NULL);
- if (PC_IN_SIGTRAMP (pc, name))
+ if (gdbarch_tdep (current_gdbarch)->pc_in_sigtramp (pc, name))
return &alpha_sigtramp_frame_unwind;
return NULL;
{
reg = (word & 0x03e00000) >> 21;
+ /* Ignore this instruction if we have already encountered
+ an instruction saving the same register earlier in the
+ function code. The current instruction does not tell
+ us where the original value upon function entry is saved.
+ All it says is that the function we are scanning reused
+ that register for some computation of its own, and is now
+ saving its result. */
+ if (info->saved_regs[reg])
+ continue;
+
if (reg == 31)
continue;
struct alpha_heuristic_unwind_cache *info
= alpha_heuristic_frame_unwind_cache (next_frame, this_prologue_cache, 0);
- /* This is meant to halt the backtrace at "_start". Make sure we
- don't halt it at a generic dummy frame. */
- if (inside_entry_file (info->start_pc))
- return;
-
*this_id = frame_id_build (info->vfp, info->start_pc);
}
};
static const struct frame_unwind *
-alpha_heuristic_frame_p (CORE_ADDR pc)
+alpha_heuristic_frame_sniffer (struct frame_info *next_frame)
{
return &alpha_heuristic_frame_unwind;
}
/* Lowest text address. This is used by heuristic_proc_start()
to decide when to stop looking. */
- tdep->vm_min_address = (CORE_ADDR) 0x120000000;
+ tdep->vm_min_address = (CORE_ADDR) 0x120000000LL;
tdep->dynamic_sigtramp_offset = NULL;
tdep->sigcontext_addr = NULL;
+ tdep->sc_pc_offset = 2 * 8;
+ tdep->sc_regs_offset = 4 * 8;
+ tdep->sc_fpregs_offset = tdep->sc_regs_offset + 32 * 8 + 8;
tdep->jb_pc = -1; /* longjmp support not enabled by default */
set_gdbarch_print_insn (gdbarch, print_insn_alpha);
/* Call info. */
- set_gdbarch_frameless_function_invocation (gdbarch,
- generic_frameless_function_invocation_not);
set_gdbarch_use_struct_convention (gdbarch, always_use_struct_convention);
set_gdbarch_extract_return_value (gdbarch, alpha_extract_return_value);
set_gdbarch_store_return_value (gdbarch, alpha_store_return_value);
- set_gdbarch_extract_struct_value_address (gdbarch,
- alpha_extract_struct_value_address);
+ set_gdbarch_deprecated_extract_struct_value_address (gdbarch, alpha_extract_struct_value_address);
/* Settings for calling functions in the inferior. */
set_gdbarch_push_dummy_call (gdbarch, alpha_push_dummy_call);
set_gdbarch_breakpoint_from_pc (gdbarch, alpha_breakpoint_from_pc);
set_gdbarch_decr_pc_after_break (gdbarch, 4);
- set_gdbarch_function_start_offset (gdbarch, 0);
- set_gdbarch_frame_args_skip (gdbarch, 0);
-
/* Hook in ABI-specific overrides, if they have been registered. */
gdbarch_init_osabi (info, gdbarch);
if (tdep->jb_pc >= 0)
set_gdbarch_get_longjmp_target (gdbarch, alpha_get_longjmp_target);
- frame_unwind_append_predicate (gdbarch, alpha_sigtramp_frame_p);
- frame_unwind_append_predicate (gdbarch, alpha_heuristic_frame_p);
+ frame_unwind_append_sniffer (gdbarch, alpha_sigtramp_frame_sniffer);
+ frame_unwind_append_sniffer (gdbarch, alpha_heuristic_frame_sniffer);
frame_base_set_default (gdbarch, &alpha_heuristic_frame_base);
void
alpha_dwarf2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
- frame_unwind_append_predicate (gdbarch, dwarf2_frame_p);
- frame_base_append_predicate (gdbarch, dwarf2_frame_base_p);
- set_gdbarch_dwarf2_build_frame_info (gdbarch, dwarf2_build_frame_info);
+ frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
+ frame_base_append_sniffer (gdbarch, dwarf2_frame_base_sniffer);
}
extern initialize_file_ftype _initialize_alpha_tdep; /* -Wmissing-prototypes */
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