#include "value.h"
#include "arch-utils.h"
#include "solib-svr4.h"
+#include "osabi.h"
#include "arm-tdep.h"
#include "gdb/sim-arm.h"
static int
arm_frame_chain_valid (CORE_ADDR chain, struct frame_info *thisframe)
{
- return (chain != 0 && (FRAME_SAVED_PC (thisframe) >= LOWEST_PC));
+ return (FRAME_SAVED_PC (thisframe) >= LOWEST_PC);
}
/* Set to true if the 32-bit mode is in use. */
static CORE_ADDR
arm_frame_args_address (struct frame_info *fi)
{
- return fi->frame;
+ return get_frame_base (fi);
}
/* The address of the local variables in the frame. */
static CORE_ADDR
arm_frame_locals_address (struct frame_info *fi)
{
- return fi->frame;
+ return get_frame_base (fi);
}
/* The number of arguments being passed in the frame. */
frame pointer, adjust the stack pointer, and save registers.
Do this until all basic prolog instructions are found. */
- fi->extra_info->framesize = 0;
+ get_frame_extra_info (fi)->framesize = 0;
for (current_pc = prologue_start;
(current_pc < prologue_end) && ((findmask & 7) != 7);
current_pc += 2)
for (regno = ARM_LR_REGNUM; regno >= 0; regno--)
if (mask & (1 << regno))
{
- fi->extra_info->framesize += 4;
+ get_frame_extra_info (fi)->framesize += 4;
get_frame_saved_regs (fi)[saved_reg[regno]] =
- -(fi->extra_info->framesize);
+ -(get_frame_extra_info (fi)->framesize);
/* Reset saved register map. */
saved_reg[regno] = regno;
}
offset = (insn & 0x7f) << 2; /* get scaled offset */
if (insn & 0x80) /* is it signed? (==subtracting) */
{
- fi->extra_info->frameoffset += offset;
+ get_frame_extra_info (fi)->frameoffset += offset;
offset = -offset;
}
- fi->extra_info->framesize -= offset;
+ get_frame_extra_info (fi)->framesize -= offset;
}
else if ((insn & 0xff00) == 0xaf00) /* add r7, sp, #imm */
{
findmask |= 2; /* setting of r7 found */
- fi->extra_info->framereg = THUMB_FP_REGNUM;
+ get_frame_extra_info (fi)->framereg = THUMB_FP_REGNUM;
/* get scaled offset */
- fi->extra_info->frameoffset = (insn & 0xff) << 2;
+ get_frame_extra_info (fi)->frameoffset = (insn & 0xff) << 2;
}
else if (insn == 0x466f) /* mov r7, sp */
{
findmask |= 2; /* setting of r7 found */
- fi->extra_info->framereg = THUMB_FP_REGNUM;
- fi->extra_info->frameoffset = 0;
+ get_frame_extra_info (fi)->framereg = THUMB_FP_REGNUM;
+ get_frame_extra_info (fi)->frameoffset = 0;
saved_reg[THUMB_FP_REGNUM] = ARM_SP_REGNUM;
}
else if ((insn & 0xffc0) == 0x4640) /* mov r0-r7, r8-r15 */
in a row (once to get the frame chain, and once to fill in the
extra frame information). */
-static struct frame_info prologue_cache;
+static struct frame_info *prologue_cache;
static int
check_prologue_cache (struct frame_info *fi)
{
int i;
- if (get_frame_pc (fi) == get_frame_pc (&prologue_cache))
+ if (get_frame_pc (fi) == get_frame_pc (prologue_cache))
{
- fi->extra_info->framereg = prologue_cache.extra_info->framereg;
- fi->extra_info->framesize = prologue_cache.extra_info->framesize;
- fi->extra_info->frameoffset = prologue_cache.extra_info->frameoffset;
+ get_frame_extra_info (fi)->framereg = get_frame_extra_info (prologue_cache)->framereg;
+ get_frame_extra_info (fi)->framesize = get_frame_extra_info (prologue_cache)->framesize;
+ get_frame_extra_info (fi)->frameoffset = get_frame_extra_info (prologue_cache)->frameoffset;
for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
- get_frame_saved_regs (fi)[i] = get_frame_saved_regs (&prologue_cache)[i];
+ get_frame_saved_regs (fi)[i] = get_frame_saved_regs (prologue_cache)[i];
return 1;
}
else
{
int i;
- deprecated_update_frame_pc_hack (&prologue_cache, get_frame_pc (fi));
- prologue_cache.extra_info->framereg = fi->extra_info->framereg;
- prologue_cache.extra_info->framesize = fi->extra_info->framesize;
- prologue_cache.extra_info->frameoffset = fi->extra_info->frameoffset;
+ deprecated_update_frame_pc_hack (prologue_cache, get_frame_pc (fi));
+ get_frame_extra_info (prologue_cache)->framereg = get_frame_extra_info (fi)->framereg;
+ get_frame_extra_info (prologue_cache)->framesize = get_frame_extra_info (fi)->framesize;
+ get_frame_extra_info (prologue_cache)->frameoffset = get_frame_extra_info (fi)->frameoffset;
for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
- get_frame_saved_regs (&prologue_cache)[i] = get_frame_saved_regs (fi)[i];
+ get_frame_saved_regs (prologue_cache)[i] = get_frame_saved_regs (fi)[i];
}
return;
/* Assume there is no frame until proven otherwise. */
- fi->extra_info->framereg = ARM_SP_REGNUM;
- fi->extra_info->framesize = 0;
- fi->extra_info->frameoffset = 0;
+ get_frame_extra_info (fi)->framereg = ARM_SP_REGNUM;
+ get_frame_extra_info (fi)->framesize = 0;
+ get_frame_extra_info (fi)->frameoffset = 0;
/* Check for Thumb prologue. */
if (arm_pc_is_thumb (get_frame_pc (fi)))
{
/* Get address of the stmfd in the prologue of the callee;
the saved PC is the address of the stmfd + 8. */
- if (!safe_read_memory_integer (fi->frame, 4, &return_value))
+ if (!safe_read_memory_integer (get_frame_base (fi), 4, &return_value))
return;
else
{
unsigned rot = (insn & 0xf00) >> 7; /* rotate amount */
imm = (imm >> rot) | (imm << (32 - rot));
fp_offset = -imm;
- fi->extra_info->framereg = ARM_FP_REGNUM;
+ get_frame_extra_info (fi)->framereg = ARM_FP_REGNUM;
}
else if ((insn & 0xfffff000) == 0xe24dd000) /* sub sp, sp #n */
{
/* The frame size is just the negative of the offset (from the
original SP) of the last thing thing we pushed on the stack.
The frame offset is [new FP] - [new SP]. */
- fi->extra_info->framesize = -sp_offset;
- if (fi->extra_info->framereg == ARM_FP_REGNUM)
- fi->extra_info->frameoffset = fp_offset - sp_offset;
+ get_frame_extra_info (fi)->framesize = -sp_offset;
+ if (get_frame_extra_info (fi)->framereg == ARM_FP_REGNUM)
+ get_frame_extra_info (fi)->frameoffset = fp_offset - sp_offset;
else
- fi->extra_info->frameoffset = 0;
+ get_frame_extra_info (fi)->frameoffset = 0;
save_prologue_cache (fi);
}
/* NOTE: cagney/2002-05-03: This function really shouldn't be
needed. Instead the (still being written) register unwind
function could be called directly. */
- for (; fi; fi = fi->next)
+ for (; fi; fi = get_next_frame (fi))
{
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), 0, 0))
{
- return deprecated_read_register_dummy (get_frame_pc (fi), fi->frame, regnum);
+ return deprecated_read_register_dummy (get_frame_pc (fi),
+ get_frame_base (fi), regnum);
}
else if (get_frame_saved_regs (fi)[regnum] != 0)
{
arm_frame_chain (struct frame_info *fi)
{
CORE_ADDR caller_pc;
- int framereg = fi->extra_info->framereg;
+ int framereg = get_frame_extra_info (fi)->framereg;
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), 0, 0))
/* A generic call dummy's frame is the same as caller's. */
- return fi->frame;
+ return get_frame_base (fi);
if (get_frame_pc (fi) < LOWEST_PC)
return 0;
caller_fi. */
if (arm_pc_is_thumb (caller_pc) != arm_pc_is_thumb (get_frame_pc (fi)))
{
- struct frame_info caller_fi;
- struct cleanup *old_chain;
-
- /* Create a temporary frame suitable for scanning the caller's
- prologue. (Ugh.) */
- memset (&caller_fi, 0, sizeof (caller_fi));
- caller_fi.extra_info = (struct frame_extra_info *)
- xcalloc (1, sizeof (struct frame_extra_info));
- old_chain = make_cleanup (xfree, caller_fi.extra_info);
- caller_fi.saved_regs = (CORE_ADDR *)
- xcalloc (1, SIZEOF_FRAME_SAVED_REGS);
- make_cleanup (xfree, caller_fi.saved_regs);
+ struct cleanup *old_chain = make_cleanup (null_cleanup, NULL);
+ struct frame_info *caller_fi =
+ deprecated_frame_xmalloc_with_cleanup (SIZEOF_FRAME_SAVED_REGS,
+ sizeof (struct frame_extra_info));
/* Now, scan the prologue and obtain the frame register. */
- deprecated_update_frame_pc_hack (&caller_fi, caller_pc);
- arm_scan_prologue (&caller_fi);
- framereg = caller_fi.extra_info->framereg;
+ deprecated_update_frame_pc_hack (caller_fi, caller_pc);
+ arm_scan_prologue (caller_fi);
+ framereg = get_frame_extra_info (caller_fi)->framereg;
/* Deallocate the storage associated with the temporary frame
created above. */
if (framereg == ARM_FP_REGNUM || framereg == THUMB_FP_REGNUM)
return arm_find_callers_reg (fi, framereg);
else
- return fi->frame + fi->extra_info->framesize;
+ return get_frame_base (fi) + get_frame_extra_info (fi)->framesize;
}
/* This function actually figures out the frame address for a given pc
if (get_frame_saved_regs (fi) == NULL)
frame_saved_regs_zalloc (fi);
- fi->extra_info = (struct frame_extra_info *)
- frame_obstack_alloc (sizeof (struct frame_extra_info));
+ frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info));
- fi->extra_info->framesize = 0;
- fi->extra_info->frameoffset = 0;
- fi->extra_info->framereg = 0;
+ get_frame_extra_info (fi)->framesize = 0;
+ get_frame_extra_info (fi)->frameoffset = 0;
+ get_frame_extra_info (fi)->framereg = 0;
- if (fi->next)
- deprecated_update_frame_pc_hack (fi, FRAME_SAVED_PC (fi->next));
+ if (get_next_frame (fi))
+ deprecated_update_frame_pc_hack (fi, FRAME_SAVED_PC (get_next_frame (fi)));
memset (get_frame_saved_regs (fi), '\000', sizeof get_frame_saved_regs (fi));
/* Compute stack pointer for this frame. We use this value for both
the sigtramp and call dummy cases. */
- if (!fi->next)
+ if (!get_next_frame (fi))
sp = read_sp();
- else if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi->next), 0, 0))
+ else if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (get_next_frame (fi)), 0, 0))
/* For generic dummy frames, pull the value direct from the frame.
Having an unwind function to do this would be nice. */
- sp = deprecated_read_register_dummy (get_frame_pc (fi->next), fi->next->frame,
+ sp = deprecated_read_register_dummy (get_frame_pc (get_next_frame (fi)),
+ get_frame_base (get_next_frame (fi)),
ARM_SP_REGNUM);
else
- sp = (fi->next->frame - fi->next->extra_info->frameoffset
- + fi->next->extra_info->framesize);
+ sp = (get_frame_base (get_next_frame (fi))
+ - get_frame_extra_info (get_next_frame (fi))->frameoffset
+ + get_frame_extra_info (get_next_frame (fi))->framesize);
/* Determine whether or not we're in a sigtramp frame.
Unfortunately, it isn't sufficient to test (get_frame_type (fi)
get_frame_saved_regs (fi)[reg] = SIGCONTEXT_REGISTER_ADDRESS (sp, get_frame_pc (fi), reg);
/* FIXME: What about thumb mode? */
- fi->extra_info->framereg = ARM_SP_REGNUM;
- fi->frame =
- read_memory_integer (get_frame_saved_regs (fi)[fi->extra_info->framereg],
- REGISTER_RAW_SIZE (fi->extra_info->framereg));
- fi->extra_info->framesize = 0;
- fi->extra_info->frameoffset = 0;
+ get_frame_extra_info (fi)->framereg = ARM_SP_REGNUM;
+ deprecated_update_frame_base_hack (fi, read_memory_integer (get_frame_saved_regs (fi)[get_frame_extra_info (fi)->framereg], REGISTER_RAW_SIZE (get_frame_extra_info (fi)->framereg)));
+ get_frame_extra_info (fi)->framesize = 0;
+ get_frame_extra_info (fi)->frameoffset = 0;
}
else
{
arm_scan_prologue (fi);
- if (!fi->next)
+ if (!get_next_frame (fi))
/* This is the innermost frame? */
- fi->frame = read_register (fi->extra_info->framereg);
- else if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi->next), 0, 0))
+ deprecated_update_frame_base_hack (fi, read_register (get_frame_extra_info (fi)->framereg));
+ else if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (get_next_frame (fi)), 0, 0))
/* Next inner most frame is a dummy, just grab its frame.
Dummy frames always have the same FP as their caller. */
- fi->frame = fi->next->frame;
- else if (fi->extra_info->framereg == ARM_FP_REGNUM
- || fi->extra_info->framereg == THUMB_FP_REGNUM)
+ deprecated_update_frame_base_hack (fi, get_frame_base (get_next_frame (fi)));
+ else if (get_frame_extra_info (fi)->framereg == ARM_FP_REGNUM
+ || get_frame_extra_info (fi)->framereg == THUMB_FP_REGNUM)
{
/* not the innermost frame */
/* If we have an FP, the callee saved it. */
- if (get_frame_saved_regs (get_next_frame (fi))[fi->extra_info->framereg] != 0)
- fi->frame =
- read_memory_integer (get_frame_saved_regs (get_next_frame (fi))[fi->extra_info->framereg], 4);
+ if (get_frame_saved_regs (get_next_frame (fi))[get_frame_extra_info (fi)->framereg] != 0)
+ deprecated_update_frame_base_hack (fi, read_memory_integer (get_frame_saved_regs (get_next_frame (fi))[get_frame_extra_info (fi)->framereg], 4));
else if (fromleaf)
/* If we were called by a frameless fn. then our frame is
still in the frame pointer register on the board... */
- fi->frame = read_fp ();
+ deprecated_update_frame_base_hack (fi, read_fp ());
}
/* Calculate actual addresses of saved registers using offsets
determined by arm_scan_prologue. */
for (reg = 0; reg < NUM_REGS; reg++)
if (get_frame_saved_regs (fi)[reg] != 0)
- get_frame_saved_regs (fi)[reg] += (fi->frame + fi->extra_info->framesize
- - fi->extra_info->frameoffset);
+ get_frame_saved_regs (fi)[reg]
+ += (get_frame_base (fi)
+ + get_frame_extra_info (fi)->framesize
+ - get_frame_extra_info (fi)->frameoffset);
}
}
{
/* If a dummy frame, pull the PC out of the frame's register buffer. */
if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), 0, 0))
- return deprecated_read_register_dummy (get_frame_pc (fi), fi->frame, ARM_PC_REGNUM);
+ return deprecated_read_register_dummy (get_frame_pc (fi),
+ get_frame_base (fi), ARM_PC_REGNUM);
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi), fi->frame - fi->extra_info->frameoffset,
- fi->frame))
+ if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi),
+ (get_frame_base (fi)
+ - get_frame_extra_info (fi)->frameoffset),
+ get_frame_base (fi)))
{
return read_memory_integer (get_frame_saved_regs (fi)[ARM_PC_REGNUM],
REGISTER_RAW_SIZE (ARM_PC_REGNUM));
{
int regnum;
struct frame_info *frame = get_current_frame ();
- CORE_ADDR old_SP = (frame->frame - frame->extra_info->frameoffset
- + frame->extra_info->framesize);
+ CORE_ADDR old_SP = (get_frame_base (frame)
+ - get_frame_extra_info (frame)->frameoffset
+ + get_frame_extra_info (frame)->framesize);
- if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame), frame->frame, frame->frame))
+ if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
+ get_frame_base (frame),
+ get_frame_base (frame)))
{
generic_pop_dummy_frame ();
flush_cached_frames ();
{
struct gdbarch_tdep *tdep;
struct gdbarch *gdbarch;
- enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;
/* Try to deterimine the ABI of the object we are loading. */
- if (info.abfd != NULL)
+ if (info.abfd != NULL && info.osabi == GDB_OSABI_UNKNOWN)
{
- osabi = gdbarch_lookup_osabi (info.abfd);
- if (osabi == GDB_OSABI_UNKNOWN)
+ switch (bfd_get_flavour (info.abfd))
{
- switch (bfd_get_flavour (info.abfd))
- {
- case bfd_target_aout_flavour:
- /* Assume it's an old APCS-style ABI. */
- osabi = GDB_OSABI_ARM_APCS;
- break;
+ case bfd_target_aout_flavour:
+ /* Assume it's an old APCS-style ABI. */
+ info.osabi = GDB_OSABI_ARM_APCS;
+ break;
- case bfd_target_coff_flavour:
- /* Assume it's an old APCS-style ABI. */
- /* XXX WinCE? */
- osabi = GDB_OSABI_ARM_APCS;
- break;
+ case bfd_target_coff_flavour:
+ /* Assume it's an old APCS-style ABI. */
+ /* XXX WinCE? */
+ info.osabi = GDB_OSABI_ARM_APCS;
+ break;
- default:
- /* Leave it as "unknown". */
- }
+ default:
+ /* Leave it as "unknown". */
}
}
- /* Find a candidate among extant architectures. */
- for (arches = gdbarch_list_lookup_by_info (arches, &info);
- arches != NULL;
- arches = gdbarch_list_lookup_by_info (arches->next, &info))
- {
- /* Make sure the ABI selection matches. */
- tdep = gdbarch_tdep (arches->gdbarch);
- if (tdep && tdep->osabi == osabi)
- return arches->gdbarch;
- }
+ /* If there is already a candidate, use it. */
+ arches = gdbarch_list_lookup_by_info (arches, &info);
+ if (arches != NULL)
+ return arches->gdbarch;
tdep = xmalloc (sizeof (struct gdbarch_tdep));
gdbarch = gdbarch_alloc (&info, tdep);
ready to unwind the PC first (see frame.c:get_prev_frame()). */
set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
- tdep->osabi = osabi;
-
/* This is the way it has always defaulted. */
tdep->fp_model = ARM_FLOAT_FPA;
arm_coff_make_msymbol_special);
/* Hook in the ABI-specific overrides, if they have been registered. */
- gdbarch_init_osabi (info, gdbarch, osabi);
+ gdbarch_init_osabi (info, gdbarch);
/* Now we have tuned the configuration, set a few final things,
based on what the OS ABI has told us. */
/* We can't use SIZEOF_FRAME_SAVED_REGS here, since that still
references the old architecture vector, not the one we are
building here. */
- if (get_frame_saved_regs (&prologue_cache) != NULL)
- xfree (get_frame_saved_regs (&prologue_cache));
+ if (get_frame_saved_regs (prologue_cache) != NULL)
+ xfree (get_frame_saved_regs (prologue_cache));
/* We can't use NUM_REGS nor NUM_PSEUDO_REGS here, since that still
references the old architecture vector, not the one we are
building here. */
- prologue_cache.saved_regs = (CORE_ADDR *)
- xcalloc (1, (sizeof (CORE_ADDR)
- * (gdbarch_num_regs (gdbarch)
- + gdbarch_num_pseudo_regs (gdbarch))));
+ {
+ CORE_ADDR *saved_regs = xcalloc (1, (sizeof (CORE_ADDR)
+ * (gdbarch_num_regs (gdbarch)
+ + gdbarch_num_pseudo_regs (gdbarch))));
+ deprecated_set_frame_saved_regs_hack (prologue_cache, saved_regs);
+ }
return gdbarch;
}
if (tdep == NULL)
return;
- fprintf_unfiltered (file, "arm_dump_tdep: OS ABI = %s\n",
- gdbarch_osabi_name (tdep->osabi));
-
fprintf_unfiltered (file, "arm_dump_tdep: Lowest pc = 0x%lx",
(unsigned long) tdep->lowest_pc);
}
add_com ("othernames", class_obscure, arm_othernames,
"Switch to the next set of register names.");
- /* Fill in the prologue_cache fields. */
- prologue_cache.saved_regs = NULL;
- prologue_cache.extra_info = (struct frame_extra_info *)
- xcalloc (1, sizeof (struct frame_extra_info));
+ /* Allocate the prologue_cache. */
+ prologue_cache = deprecated_frame_xmalloc ();
+ deprecated_set_frame_extra_info_hack (prologue_cache, xcalloc (1, sizeof (struct frame_extra_info)));
/* Debugging flag. */
add_show_from_set (add_set_cmd ("arm", class_maintenance, var_zinteger,
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