#include "arch-utils.h"
#include "floatformat.h"
#include "regcache.h"
+#include "reggroups.h"
+#include "frame.h"
+#include "frame-base.h"
+#include "frame-unwind.h"
#include "doublest.h"
#include "value.h"
-
+#include "gdb_assert.h"
#include "objfiles.h"
#include "elf/common.h" /* for DT_PLTGOT value */
#include "elf-bfd.h"
+#include "dis-asm.h"
/* Hook for determining the global pointer when calling functions in
the inferior under AIX. The initialization code in ia64-aix-nat.c
static gdbarch_init_ftype ia64_gdbarch_init;
static gdbarch_register_name_ftype ia64_register_name;
-static gdbarch_register_raw_size_ftype ia64_register_raw_size;
-static gdbarch_register_virtual_size_ftype ia64_register_virtual_size;
-static gdbarch_register_virtual_type_ftype ia64_register_virtual_type;
-static gdbarch_register_byte_ftype ia64_register_byte;
+static gdbarch_register_type_ftype ia64_register_type;
static gdbarch_breakpoint_from_pc_ftype ia64_breakpoint_from_pc;
-static gdbarch_frame_chain_ftype ia64_frame_chain;
-static gdbarch_frame_saved_pc_ftype ia64_frame_saved_pc;
static gdbarch_skip_prologue_ftype ia64_skip_prologue;
-static gdbarch_frame_init_saved_regs_ftype ia64_frame_init_saved_regs;
-static gdbarch_get_saved_register_ftype ia64_get_saved_register;
-static gdbarch_deprecated_extract_return_value_ftype ia64_extract_return_value;
-static gdbarch_deprecated_extract_struct_value_address_ftype ia64_extract_struct_value_address;
+static gdbarch_extract_return_value_ftype ia64_extract_return_value;
+static gdbarch_extract_struct_value_address_ftype ia64_extract_struct_value_address;
static gdbarch_use_struct_convention_ftype ia64_use_struct_convention;
-static gdbarch_frameless_function_invocation_ftype ia64_frameless_function_invocation;
-static gdbarch_init_extra_frame_info_ftype ia64_init_extra_frame_info;
-static gdbarch_store_struct_return_ftype ia64_store_struct_return;
-static gdbarch_push_arguments_ftype ia64_push_arguments;
-static gdbarch_push_return_address_ftype ia64_push_return_address;
-static gdbarch_pop_frame_ftype ia64_pop_frame;
-static gdbarch_saved_pc_after_call_ftype ia64_saved_pc_after_call;
-static void ia64_pop_frame_regular (struct frame_info *frame);
static struct type *is_float_or_hfa_type (struct type *t);
-static int ia64_num_regs = 590;
+static struct type *builtin_type_ia64_ext;
+
+#define NUM_IA64_RAW_REGS 462
-static int pc_regnum = IA64_IP_REGNUM;
static int sp_regnum = IA64_GR12_REGNUM;
static int fp_regnum = IA64_VFP_REGNUM;
static int lr_regnum = IA64_VRAP_REGNUM;
-static LONGEST ia64_call_dummy_words[] = {0};
+/* NOTE: we treat the register stack registers r32-r127 as pseudo-registers because
+ they may not be accessible via the ptrace register get/set interfaces. */
+enum pseudo_regs { FIRST_PSEUDO_REGNUM = NUM_IA64_RAW_REGS, VBOF_REGNUM = IA64_NAT127_REGNUM + 1, V32_REGNUM,
+ V127_REGNUM = V32_REGNUM + 95,
+ VP0_REGNUM, VP16_REGNUM = VP0_REGNUM + 16, VP63_REGNUM = VP0_REGNUM + 63, LAST_PSEUDO_REGNUM };
/* Array of register names; There should be ia64_num_regs strings in
the initializer. */
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
- "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
- "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
- "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
- "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
- "r64", "r65", "r66", "r67", "r68", "r69", "r70", "r71",
- "r72", "r73", "r74", "r75", "r76", "r77", "r78", "r79",
- "r80", "r81", "r82", "r83", "r84", "r85", "r86", "r87",
- "r88", "r89", "r90", "r91", "r92", "r93", "r94", "r95",
- "r96", "r97", "r98", "r99", "r100", "r101", "r102", "r103",
- "r104", "r105", "r106", "r107", "r108", "r109", "r110", "r111",
- "r112", "r113", "r114", "r115", "r116", "r117", "r118", "r119",
- "r120", "r121", "r122", "r123", "r124", "r125", "r126", "r127",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
"f112", "f113", "f114", "f115", "f116", "f117", "f118", "f119",
"f120", "f121", "f122", "f123", "f124", "f125", "f126", "f127",
- "p0", "p1", "p2", "p3", "p4", "p5", "p6", "p7",
- "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15",
- "p16", "p17", "p18", "p19", "p20", "p21", "p22", "p23",
- "p24", "p25", "p26", "p27", "p28", "p29", "p30", "p31",
- "p32", "p33", "p34", "p35", "p36", "p37", "p38", "p39",
- "p40", "p41", "p42", "p43", "p44", "p45", "p46", "p47",
- "p48", "p49", "p50", "p51", "p52", "p53", "p54", "p55",
- "p56", "p57", "p58", "p59", "p60", "p61", "p62", "p63",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
"b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7",
"nat104","nat105","nat106","nat107","nat108","nat109","nat110","nat111",
"nat112","nat113","nat114","nat115","nat116","nat117","nat118","nat119",
"nat120","nat121","nat122","nat123","nat124","nat125","nat126","nat127",
+
+ "bof",
+
+ "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39",
+ "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47",
+ "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55",
+ "r56", "r57", "r58", "r59", "r60", "r61", "r62", "r63",
+ "r64", "r65", "r66", "r67", "r68", "r69", "r70", "r71",
+ "r72", "r73", "r74", "r75", "r76", "r77", "r78", "r79",
+ "r80", "r81", "r82", "r83", "r84", "r85", "r86", "r87",
+ "r88", "r89", "r90", "r91", "r92", "r93", "r94", "r95",
+ "r96", "r97", "r98", "r99", "r100", "r101", "r102", "r103",
+ "r104", "r105", "r106", "r107", "r108", "r109", "r110", "r111",
+ "r112", "r113", "r114", "r115", "r116", "r117", "r118", "r119",
+ "r120", "r121", "r122", "r123", "r124", "r125", "r126", "r127",
+
+ "p0", "p1", "p2", "p3", "p4", "p5", "p6", "p7",
+ "p8", "p9", "p10", "p11", "p12", "p13", "p14", "p15",
+ "p16", "p17", "p18", "p19", "p20", "p21", "p22", "p23",
+ "p24", "p25", "p26", "p27", "p28", "p29", "p30", "p31",
+ "p32", "p33", "p34", "p35", "p36", "p37", "p38", "p39",
+ "p40", "p41", "p42", "p43", "p44", "p45", "p46", "p47",
+ "p48", "p49", "p50", "p51", "p52", "p53", "p54", "p55",
+ "p56", "p57", "p58", "p59", "p60", "p61", "p62", "p63",
};
-struct frame_extra_info
- {
- CORE_ADDR bsp; /* points at r32 for the current frame */
- CORE_ADDR cfm; /* cfm value for current frame */
- int sof; /* Size of frame (decoded from cfm value) */
- int sol; /* Size of locals (decoded from cfm value) */
- CORE_ADDR after_prologue;
- /* Address of first instruction after the last
- prologue instruction; Note that there may
- be instructions from the function's body
- intermingled with the prologue. */
- int mem_stack_frame_size;
- /* Size of the memory stack frame (may be zero),
- or -1 if it has not been determined yet. */
- int fp_reg; /* Register number (if any) used a frame pointer
+struct ia64_frame_cache
+{
+ CORE_ADDR base; /* frame pointer base for frame */
+ CORE_ADDR pc; /* function start pc for frame */
+ CORE_ADDR saved_sp; /* stack pointer for frame */
+ CORE_ADDR bsp; /* points at r32 for the current frame */
+ CORE_ADDR cfm; /* cfm value for current frame */
+ CORE_ADDR prev_cfm; /* cfm value for previous frame */
+ int frameless;
+ int sof; /* Size of frame (decoded from cfm value) */
+ int sol; /* Size of locals (decoded from cfm value) */
+ int sor; /* Number of rotating registers. (decoded from cfm value) */
+ CORE_ADDR after_prologue;
+ /* Address of first instruction after the last
+ prologue instruction; Note that there may
+ be instructions from the function's body
+ intermingled with the prologue. */
+ int mem_stack_frame_size;
+ /* Size of the memory stack frame (may be zero),
+ or -1 if it has not been determined yet. */
+ int fp_reg; /* Register number (if any) used a frame pointer
for this frame. 0 if no register is being used
as the frame pointer. */
- };
+
+ /* Saved registers. */
+ CORE_ADDR saved_regs[NUM_IA64_RAW_REGS];
+
+};
struct gdbarch_tdep
{
#define FIND_GLOBAL_POINTER \
(gdbarch_tdep (current_gdbarch)->find_global_pointer)
+int
+ia64_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
+ struct reggroup *group)
+{
+ int vector_p;
+ int float_p;
+ int raw_p;
+ if (group == all_reggroup)
+ return 1;
+ vector_p = TYPE_VECTOR (register_type (gdbarch, regnum));
+ float_p = TYPE_CODE (register_type (gdbarch, regnum)) == TYPE_CODE_FLT;
+ raw_p = regnum < NUM_IA64_RAW_REGS;
+ if (group == float_reggroup)
+ return float_p;
+ if (group == vector_reggroup)
+ return vector_p;
+ if (group == general_reggroup)
+ return (!vector_p && !float_p);
+ if (group == save_reggroup || group == restore_reggroup)
+ return raw_p;
+ return 0;
+}
+
static const char *
ia64_register_name (int reg)
{
return ia64_register_names[reg];
}
-int
-ia64_register_raw_size (int reg)
+struct type *
+ia64_register_type (struct gdbarch *arch, int reg)
{
- return (IA64_FR0_REGNUM <= reg && reg <= IA64_FR127_REGNUM) ? 16 : 8;
+ if (reg >= IA64_FR0_REGNUM && reg <= IA64_FR127_REGNUM)
+ return builtin_type_ia64_ext;
+ else
+ return builtin_type_long;
}
-int
-ia64_register_virtual_size (int reg)
+static int
+ia64_dwarf_reg_to_regnum (int reg)
{
- return (IA64_FR0_REGNUM <= reg && reg <= IA64_FR127_REGNUM) ? 16 : 8;
+ if (reg >= IA64_GR32_REGNUM && reg <= IA64_GR127_REGNUM)
+ return V32_REGNUM + (reg - IA64_GR32_REGNUM);
+ return reg;
}
-/* Return true iff register N's virtual format is different from
- its raw format. */
-int
-ia64_register_convertible (int nr)
+static int
+floatformat_valid (fmt, from)
+ const struct floatformat *fmt;
+ const char *from;
{
- return (IA64_FR0_REGNUM <= nr && nr <= IA64_FR127_REGNUM);
+ return 1;
}
const struct floatformat floatformat_ia64_ext =
{
floatformat_little, 82, 0, 1, 17, 65535, 0x1ffff, 18, 64,
- floatformat_intbit_yes
+ floatformat_intbit_yes, "floatformat_ia64_ext", floatformat_valid
};
-void
-ia64_register_convert_to_virtual (int regnum, struct type *type,
- char *from, char *to)
-{
- if (regnum >= IA64_FR0_REGNUM && regnum <= IA64_FR127_REGNUM)
- {
- DOUBLEST val;
- floatformat_to_doublest (&floatformat_ia64_ext, from, &val);
- store_floating(to, TYPE_LENGTH(type), val);
- }
- else
- error("ia64_register_convert_to_virtual called with non floating point register number");
-}
-
-void
-ia64_register_convert_to_raw (struct type *type, int regnum,
- char *from, char *to)
-{
- if (regnum >= IA64_FR0_REGNUM && regnum <= IA64_FR127_REGNUM)
- {
- DOUBLEST val = extract_floating (from, TYPE_LENGTH(type));
- floatformat_from_doublest (&floatformat_ia64_ext, &val, to);
- }
- else
- error("ia64_register_convert_to_raw called with non floating point register number");
-}
-
-struct type *
-ia64_register_virtual_type (int reg)
-{
- if (reg >= IA64_FR0_REGNUM && reg <= IA64_FR127_REGNUM)
- return builtin_type_long_double;
- else
- return builtin_type_long;
-}
-
-int
-ia64_register_byte (int reg)
-{
- return (8 * reg) +
- (reg <= IA64_FR0_REGNUM ? 0 : 8 * ((reg > IA64_FR127_REGNUM) ? 128 : reg - IA64_FR0_REGNUM));
-}
/* Read the given register from a sigcontext structure in the
specified frame. */
regaddr = SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), regnum);
if (regaddr)
- return read_memory_integer (regaddr, REGISTER_RAW_SIZE (regnum));
+ return read_memory_integer (regaddr, register_size (current_gdbarch, regnum));
else
internal_error (__FILE__, __LINE__,
"read_sigcontext_register: Register %d not in struct sigcontext", regnum);
using the pattern seen below. */
#if 0
-#define BREAKPOINT 0x00002000040LL
+#define IA64_BREAKPOINT 0x00002000040LL
#endif
-#define BREAKPOINT 0x00003333300LL
+#define IA64_BREAKPOINT 0x00003333300LL
static int
ia64_memory_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
instr = slotN_contents (bundle, slotnum);
memcpy(contents_cache, &instr, sizeof(instr));
- replace_slotN_contents (bundle, BREAKPOINT, slotnum);
+ replace_slotN_contents (bundle, IA64_BREAKPOINT, slotnum);
if (val == 0)
target_write_memory (addr, bundle, BUNDLE_LEN);
return breakpoint;
}
-CORE_ADDR
+static CORE_ADDR
+ia64_read_fp (void)
+{
+ /* We won't necessarily have a frame pointer and even if we do, it
+ winds up being extraordinarly messy when attempting to find the
+ frame chain. So for the purposes of creating frames (which is
+ all deprecated_read_fp() is used for), simply use the stack
+ pointer value instead. */
+ gdb_assert (SP_REGNUM >= 0);
+ return read_register (SP_REGNUM);
+}
+
+static CORE_ADDR
ia64_read_pc (ptid_t ptid)
{
CORE_ADDR psr_value = read_register_pid (IA64_PSR_REGNUM, ptid);
return pc_value | (slot_num * SLOT_MULTIPLIER);
}
-void
+static void
ia64_write_pc (CORE_ADDR new_pc, ptid_t ptid)
{
int slot_num = (int) (new_pc & 0xf) / SLOT_MULTIPLIER;
return new_addr;
}
-/* The IA-64 frame chain is a bit odd. We won't always have a frame
- pointer, so we use the SP value as the FP for the purpose of
- creating a frame. There is sometimes a register (not fixed) which
- is used as a frame pointer. When this register exists, it is not
- especially hard to determine which one is being used. It isn't
- even really hard to compute the frame chain, but it can be
- computationally expensive. So, instead of making life difficult
- (and slow), we pick a more convenient representation of the frame
- chain, knowing that we'll have to make some small adjustments in
- other places. (E.g, note that read_fp() is actually read_sp() in
- ia64_gdbarch_init() below.)
-
- Okay, so what is the frame chain exactly? It'll be the SP value
- at the time that the function in question was entered.
-
- Note that this *should* actually the frame pointer for the current
- function! But as I note above, if we were to attempt to find the
- address of the beginning of the previous frame, we'd waste a lot
- of cycles for no good reason. So instead, we simply choose to
- represent the frame chain as the end of the previous frame instead
- of the beginning. */
-
-CORE_ADDR
-ia64_frame_chain (struct frame_info *frame)
-{
- if ((get_frame_type (frame) == SIGTRAMP_FRAME))
- return read_sigcontext_register (frame, sp_regnum);
- else if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- return get_frame_base (frame);
- else
+static void
+ia64_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
+ int regnum, void *buf)
+{
+ if (regnum >= V32_REGNUM && regnum <= V127_REGNUM)
{
- FRAME_INIT_SAVED_REGS (frame);
- if (get_frame_saved_regs (frame)[IA64_VFP_REGNUM])
- return read_memory_integer (get_frame_saved_regs (frame)[IA64_VFP_REGNUM], 8);
+ ULONGEST bsp;
+ ULONGEST cfm;
+ CORE_ADDR reg;
+ regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
+
+ /* The bsp points at the end of the register frame so we
+ subtract the size of frame from it to get start of register frame. */
+ bsp = rse_address_add (bsp, -(cfm & 0x7f));
+
+ if ((cfm & 0x7f) > regnum - V32_REGNUM)
+ {
+ ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
+ reg = read_memory_integer ((CORE_ADDR)reg_addr, 8);
+ store_unsigned_integer (buf, register_size (current_gdbarch, regnum), reg);
+ }
else
- return (get_frame_base (frame)
- + frame->extra_info->mem_stack_frame_size);
+ store_unsigned_integer (buf, register_size (current_gdbarch, regnum), 0);
}
-}
+ else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
+ {
+ ULONGEST unatN_val;
+ ULONGEST unat;
+ regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat);
+ unatN_val = (unat & (1LL << (regnum - IA64_NAT0_REGNUM))) != 0;
+ store_unsigned_integer (buf, register_size (current_gdbarch, regnum), unatN_val);
+ }
+ else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
+ {
+ ULONGEST natN_val = 0;
+ ULONGEST bsp;
+ ULONGEST cfm;
+ CORE_ADDR gr_addr = 0;
+ regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
+
+ /* The bsp points at the end of the register frame so we
+ subtract the size of frame from it to get start of register frame. */
+ bsp = rse_address_add (bsp, -(cfm & 0x7f));
+
+ if ((cfm & 0x7f) > regnum - V32_REGNUM)
+ gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
+
+ if (gr_addr != 0)
+ {
+ /* Compute address of nat collection bits. */
+ CORE_ADDR nat_addr = gr_addr | 0x1f8;
+ CORE_ADDR nat_collection;
+ int nat_bit;
+ /* If our nat collection address is bigger than bsp, we have to get
+ the nat collection from rnat. Otherwise, we fetch the nat
+ collection from the computed address. */
+ if (nat_addr >= bsp)
+ regcache_cooked_read_unsigned (regcache, IA64_RNAT_REGNUM, &nat_collection);
+ else
+ nat_collection = read_memory_integer (nat_addr, 8);
+ nat_bit = (gr_addr >> 3) & 0x3f;
+ natN_val = (nat_collection >> nat_bit) & 1;
+ }
+
+ store_unsigned_integer (buf, register_size (current_gdbarch, regnum), natN_val);
+ }
+ else if (regnum == VBOF_REGNUM)
+ {
+ /* A virtual register frame start is provided for user convenience.
+ It can be calculated as the bsp - sof (sizeof frame). */
+ ULONGEST bsp, vbsp;
+ ULONGEST cfm;
+ CORE_ADDR reg;
+ regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
+
+ /* The bsp points at the end of the register frame so we
+ subtract the size of frame from it to get beginning of frame. */
+ vbsp = rse_address_add (bsp, -(cfm & 0x7f));
+ store_unsigned_integer (buf, register_size (current_gdbarch, regnum), vbsp);
+ }
+ else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
+ {
+ ULONGEST pr;
+ ULONGEST cfm;
+ ULONGEST prN_val;
+ CORE_ADDR reg;
+ regcache_cooked_read_unsigned (regcache, IA64_PR_REGNUM, &pr);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
+
+ if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
+ {
+ /* Fetch predicate register rename base from current frame
+ marker for this frame. */
+ int rrb_pr = (cfm >> 32) & 0x3f;
-CORE_ADDR
-ia64_frame_saved_pc (struct frame_info *frame)
-{
- if ((get_frame_type (frame) == SIGTRAMP_FRAME))
- return read_sigcontext_register (frame, pc_regnum);
- else if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame)))
- return deprecated_read_register_dummy (get_frame_pc (frame),
- get_frame_base (frame), pc_regnum);
+ /* Adjust the register number to account for register rotation. */
+ regnum = VP16_REGNUM
+ + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
+ }
+ prN_val = (pr & (1LL << (regnum - VP0_REGNUM))) != 0;
+ store_unsigned_integer (buf, register_size (current_gdbarch, regnum), prN_val);
+ }
else
+ memset (buf, 0, register_size (current_gdbarch, regnum));
+}
+
+static void
+ia64_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
+ int regnum, const void *buf)
+{
+ if (regnum >= V32_REGNUM && regnum <= V127_REGNUM)
+ {
+ ULONGEST bsp;
+ ULONGEST cfm;
+ CORE_ADDR reg;
+ regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
+
+ bsp = rse_address_add (bsp, -(cfm & 0x7f));
+
+ if ((cfm & 0x7f) > regnum - V32_REGNUM)
+ {
+ ULONGEST reg_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
+ write_memory (reg_addr, (void *)buf, 8);
+ }
+ }
+ else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
+ {
+ ULONGEST unatN_val, unat, unatN_mask;
+ regcache_cooked_read_unsigned (regcache, IA64_UNAT_REGNUM, &unat);
+ unatN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
+ unatN_mask = (1LL << (regnum - IA64_NAT0_REGNUM));
+ if (unatN_val == 0)
+ unat &= ~unatN_mask;
+ else if (unatN_val == 1)
+ unat |= unatN_mask;
+ regcache_cooked_write_unsigned (regcache, IA64_UNAT_REGNUM, unat);
+ }
+ else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
+ {
+ ULONGEST natN_val;
+ ULONGEST bsp;
+ ULONGEST cfm;
+ CORE_ADDR gr_addr = 0;
+ regcache_cooked_read_unsigned (regcache, IA64_BSP_REGNUM, &bsp);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
+
+ /* The bsp points at the end of the register frame so we
+ subtract the size of frame from it to get start of register frame. */
+ bsp = rse_address_add (bsp, -(cfm & 0x7f));
+
+ if ((cfm & 0x7f) > regnum - V32_REGNUM)
+ gr_addr = rse_address_add (bsp, (regnum - V32_REGNUM));
+
+ natN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
+
+ if (gr_addr != 0 && (natN_val == 0 || natN_val == 1))
+ {
+ /* Compute address of nat collection bits. */
+ CORE_ADDR nat_addr = gr_addr | 0x1f8;
+ CORE_ADDR nat_collection;
+ int natN_bit = (gr_addr >> 3) & 0x3f;
+ ULONGEST natN_mask = (1LL << natN_bit);
+ /* If our nat collection address is bigger than bsp, we have to get
+ the nat collection from rnat. Otherwise, we fetch the nat
+ collection from the computed address. */
+ if (nat_addr >= bsp)
+ {
+ regcache_cooked_read_unsigned (regcache, IA64_RNAT_REGNUM, &nat_collection);
+ if (natN_val)
+ nat_collection |= natN_mask;
+ else
+ nat_collection &= ~natN_mask;
+ regcache_cooked_write_unsigned (regcache, IA64_RNAT_REGNUM, nat_collection);
+ }
+ else
+ {
+ char nat_buf[8];
+ nat_collection = read_memory_integer (nat_addr, 8);
+ if (natN_val)
+ nat_collection |= natN_mask;
+ else
+ nat_collection &= ~natN_mask;
+ store_unsigned_integer (nat_buf, register_size (current_gdbarch, regnum), nat_collection);
+ write_memory (nat_addr, nat_buf, 8);
+ }
+ }
+ }
+ else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
{
- FRAME_INIT_SAVED_REGS (frame);
-
- if (get_frame_saved_regs (frame)[IA64_VRAP_REGNUM])
- return read_memory_integer (get_frame_saved_regs (frame)[IA64_VRAP_REGNUM], 8);
- else if (get_next_frame (frame)
- && (get_frame_type (get_next_frame (frame)) == SIGTRAMP_FRAME))
- return read_sigcontext_register (get_next_frame (frame), IA64_BR0_REGNUM);
- else /* either frameless, or not far enough along in the prologue... */
- return ia64_saved_pc_after_call (frame);
+ ULONGEST pr;
+ ULONGEST cfm;
+ ULONGEST prN_val;
+ ULONGEST prN_mask;
+
+ regcache_cooked_read_unsigned (regcache, IA64_PR_REGNUM, &pr);
+ regcache_cooked_read_unsigned (regcache, IA64_CFM_REGNUM, &cfm);
+
+ if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
+ {
+ /* Fetch predicate register rename base from current frame
+ marker for this frame. */
+ int rrb_pr = (cfm >> 32) & 0x3f;
+
+ /* Adjust the register number to account for register rotation. */
+ regnum = VP16_REGNUM
+ + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
+ }
+ prN_val = extract_unsigned_integer (buf, register_size (current_gdbarch, regnum));
+ prN_mask = (1LL << (regnum - VP0_REGNUM));
+ if (prN_val == 0)
+ pr &= ~prN_mask;
+ else if (prN_val == 1)
+ pr |= prN_mask;
+ regcache_cooked_write_unsigned (regcache, IA64_PR_REGNUM, pr);
}
}
+/* The ia64 needs to convert between various ieee floating-point formats
+ and the special ia64 floating point register format. */
+
+static int
+ia64_convert_register_p (int regno, struct type *type)
+{
+ return (regno >= IA64_FR0_REGNUM && regno <= IA64_FR127_REGNUM);
+}
+
+static void
+ia64_register_to_value (struct frame_info *frame, int regnum,
+ struct type *valtype, void *out)
+{
+ char in[MAX_REGISTER_SIZE];
+ frame_register_read (frame, regnum, in);
+ convert_typed_floating (in, builtin_type_ia64_ext, out, valtype);
+}
+
+static void
+ia64_value_to_register (struct frame_info *frame, int regnum,
+ struct type *valtype, const void *in)
+{
+ char out[MAX_REGISTER_SIZE];
+ convert_typed_floating (in, valtype, out, builtin_type_ia64_ext);
+ put_frame_register (frame, regnum, out);
+}
+
+
/* Limit the number of skipped non-prologue instructions since examining
of the prologue is expensive. */
-static int max_skip_non_prologue_insns = 10;
+static int max_skip_non_prologue_insns = 40;
/* Given PC representing the starting address of a function, and
LIM_PC which is the (sloppy) limit to which to scan when looking
| (((_instr_) & 0x00008000000LL) >> 20) \
| (((_instr_) & 0x00000001fc0LL) >> 6))
+/* Allocate and initialize a frame cache. */
+
+static struct ia64_frame_cache *
+ia64_alloc_frame_cache (void)
+{
+ struct ia64_frame_cache *cache;
+ int i;
+
+ cache = FRAME_OBSTACK_ZALLOC (struct ia64_frame_cache);
+
+ /* Base address. */
+ cache->base = 0;
+ cache->pc = 0;
+ cache->cfm = 0;
+ cache->prev_cfm = 0;
+ cache->sof = 0;
+ cache->sol = 0;
+ cache->sor = 0;
+ cache->bsp = 0;
+ cache->fp_reg = 0;
+ cache->frameless = 1;
+
+ for (i = 0; i < NUM_IA64_RAW_REGS; i++)
+ cache->saved_regs[i] = 0;
+
+ return cache;
+}
+
static CORE_ADDR
-examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *frame)
+examine_prologue (CORE_ADDR pc, CORE_ADDR lim_pc, struct frame_info *next_frame, struct ia64_frame_cache *cache)
{
CORE_ADDR next_pc;
CORE_ADDR last_prologue_pc = pc;
instruction_type it;
long long instr;
- int do_fsr_stuff = 0;
-
int cfm_reg = 0;
int ret_reg = 0;
int fp_reg = 0;
CORE_ADDR spill_addr = 0;
char instores[8];
char infpstores[8];
+ char reg_contents[256];
int trust_limit;
+ int frameless = 1;
+ int i;
+ CORE_ADDR addr;
+ char buf[8];
+ CORE_ADDR bof, sor, sol, sof, cfm, rrb_gr;
memset (instores, 0, sizeof instores);
memset (infpstores, 0, sizeof infpstores);
+ memset (reg_contents, 0, sizeof reg_contents);
- if (frame && !get_frame_saved_regs (frame))
- {
- frame_saved_regs_zalloc (frame);
- do_fsr_stuff = 1;
- }
-
- if (frame
- && !do_fsr_stuff
- && frame->extra_info->after_prologue != 0
- && frame->extra_info->after_prologue <= lim_pc)
- return frame->extra_info->after_prologue;
+ if (cache->after_prologue != 0
+ && cache->after_prologue <= lim_pc)
+ return cache->after_prologue;
lim_pc = refine_prologue_limit (pc, lim_pc, &trust_limit);
-
- /* Must start with an alloc instruction */
next_pc = fetch_instruction (pc, &it, &instr);
+
+ /* We want to check if we have a recognizable function start before we
+ look ahead for a prologue. */
if (pc < lim_pc && next_pc
&& it == M && ((instr & 0x1ee0000003fLL) == 0x02c00000000LL))
{
- /* alloc */
+ /* alloc - start of a regular function. */
int sor = (int) ((instr & 0x00078000000LL) >> 27);
int sol = (int) ((instr & 0x00007f00000LL) >> 20);
int sof = (int) ((instr & 0x000000fe000LL) >> 13);
- /* Okay, so sor, sol, and sof aren't used right now; but perhaps
- we could compare against the size given to us via the cfm as
- either a sanity check or possibly to see if the frame has been
- changed by a later alloc instruction... */
int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
+
+ /* Verify that the current cfm matches what we think is the
+ function start. If we have somehow jumped within a function,
+ we do not want to interpret the prologue and calculate the
+ addresses of various registers such as the return address.
+ We will instead treat the frame as frameless. */
+ if (!next_frame ||
+ (sof == (cache->cfm & 0x7f) &&
+ sol == ((cache->cfm >> 7) & 0x7f)))
+ frameless = 0;
+
cfm_reg = rN;
last_prologue_pc = next_pc;
pc = next_pc;
}
else
{
- pc = lim_pc; /* Frameless: We're done early. */
- if (trust_limit)
- last_prologue_pc = lim_pc;
+ /* Look for a leaf routine. */
+ if (pc < lim_pc && next_pc
+ && (it == I || it == M)
+ && ((instr & 0x1ee00000000LL) == 0x10800000000LL))
+ {
+ /* adds rN = imm14, rM (or mov rN, rM when imm14 is 0) */
+ int imm = (int) ((((instr & 0x01000000000LL) ? -1 : 0) << 13)
+ | ((instr & 0x001f8000000LL) >> 20)
+ | ((instr & 0x000000fe000LL) >> 13));
+ int rM = (int) ((instr & 0x00007f00000LL) >> 20);
+ int rN = (int) ((instr & 0x00000001fc0LL) >> 6);
+ int qp = (int) (instr & 0x0000000003fLL);
+ if (qp == 0 && rN == 2 && imm == 0 && rM == 12 && fp_reg == 0)
+ {
+ /* mov r2, r12 - beginning of leaf routine */
+ fp_reg = rN;
+ last_prologue_pc = next_pc;
+ }
+ }
+
+ /* If we don't recognize a regular function or leaf routine, we are
+ done. */
+ if (!fp_reg)
+ {
+ pc = lim_pc;
+ if (trust_limit)
+ last_prologue_pc = lim_pc;
+ }
}
/* Loop, looking for prologue instructions, keeping track of
if (next_pc == 0)
break;
- if ((it == B && ((instr & 0x1e1f800003f) != 0x04000000000))
- || ((instr & 0x3fLL) != 0LL))
+ if (it == B && ((instr & 0x1e1f800003f) != 0x04000000000))
{
- /* Exit loop upon hitting a non-nop branch instruction
- or a predicated instruction. */
+ /* Exit loop upon hitting a non-nop branch instruction. */
+ if (trust_limit)
+ lim_pc = pc;
+ break;
+ }
+ else if (((instr & 0x3fLL) != 0LL) &&
+ (frameless || ret_reg != 0))
+ {
+ /* Exit loop upon hitting a predicated instruction if
+ we already have the return register or if we are frameless. */
+ if (trust_limit)
+ lim_pc = pc;
break;
}
else if (it == I && ((instr & 0x1eff8000000LL) == 0x00188000000LL))
else if (qp == 0 && rN == 2
&& ((rM == fp_reg && fp_reg != 0) || rM == 12))
{
+ char buf[MAX_REGISTER_SIZE];
+ CORE_ADDR saved_sp = 0;
/* adds r2, spilloffset, rFramePointer
or
adds r2, spilloffset, r12
/* Hmm... whether or not this will work will depend on
where the pc is. If it's still early in the prologue
this'll be wrong. FIXME */
- spill_addr = (frame ? get_frame_base (frame) : 0)
+ if (next_frame)
+ {
+ frame_unwind_register (next_frame, sp_regnum, buf);
+ saved_sp = extract_unsigned_integer (buf, 8);
+ }
+ spill_addr = saved_sp
+ (rM == 12 ? 0 : mem_stack_frame_size)
+ imm;
spill_reg = rN;
last_prologue_pc = next_pc;
}
+ else if (qp == 0 && rM >= 32 && rM < 40 && !instores[rM] &&
+ rN < 256 && imm == 0)
+ {
+ /* mov rN, rM where rM is an input register */
+ reg_contents[rN] = rM;
+ last_prologue_pc = next_pc;
+ }
+ else if (frameless && qp == 0 && rN == fp_reg && imm == 0 &&
+ rM == 2)
+ {
+ /* mov r12, r2 */
+ last_prologue_pc = next_pc;
+ break;
+ }
}
else if (it == M
&& ( ((instr & 0x1efc0000000LL) == 0x0eec0000000LL)
if (qp == 0 && rN == spill_reg && spill_addr != 0
&& ((2 <= fM && fM <= 5) || (16 <= fM && fM <= 31)))
{
- if (do_fsr_stuff)
- get_frame_saved_regs (frame)[IA64_FR0_REGNUM + fM] = spill_addr;
+ cache->saved_regs[IA64_FR0_REGNUM + fM] = spill_addr;
if ((instr & 0x1efc0000000) == 0x0eec0000000)
spill_addr += imm;
int rN = (int) ((instr & 0x00007f00000LL) >> 20);
int rM = (int) ((instr & 0x000000fe000LL) >> 13);
int qp = (int) (instr & 0x0000000003fLL);
+ int indirect = rM < 256 ? reg_contents[rM] : 0;
if (qp == 0 && rN == spill_reg && spill_addr != 0
&& (rM == unat_save_reg || rM == pr_save_reg))
{
if (rM == unat_save_reg)
{
/* Track UNAT register */
- if (do_fsr_stuff)
- get_frame_saved_regs (frame)[IA64_UNAT_REGNUM] = spill_addr;
+ cache->saved_regs[IA64_UNAT_REGNUM] = spill_addr;
unat_save_reg = 0;
}
else
{
/* Track PR register */
- if (do_fsr_stuff)
- get_frame_saved_regs (frame)[IA64_PR_REGNUM] = spill_addr;
+ cache->saved_regs[IA64_PR_REGNUM] = spill_addr;
pr_save_reg = 0;
}
if ((instr & 0x1efc0000000LL) == 0x0acc0000000LL)
instores[rM-32] = 1;
last_prologue_pc = next_pc;
}
+ else if (qp == 0 && 32 <= indirect && indirect < 40 &&
+ !instores[indirect-32])
+ {
+ /* Allow an indirect store of an input register. */
+ instores[indirect-32] = 1;
+ last_prologue_pc = next_pc;
+ }
}
else if (it == M && ((instr & 0x1ff08000000LL) == 0x08c00000000LL))
{
register is permitted. */
int rM = (int) ((instr & 0x000000fe000LL) >> 13);
int qp = (int) (instr & 0x0000000003fLL);
+ int indirect = rM < 256 ? reg_contents[rM] : 0;
if (qp == 0 && 32 <= rM && rM < 40 && !instores[rM-32])
{
instores[rM-32] = 1;
last_prologue_pc = next_pc;
}
+ else if (qp == 0 && 32 <= indirect && indirect < 40 &&
+ !instores[indirect-32])
+ {
+ /* Allow an indirect store of an input register. */
+ instores[indirect-32] = 1;
+ last_prologue_pc = next_pc;
+ }
}
else if (it == M && ((instr & 0x1ff88000000LL) == 0x0cc80000000LL))
{
/* We've found a spill of one of the preserved general purpose
regs. Record the spill address and advance the spill
register if appropriate. */
- if (do_fsr_stuff)
- get_frame_saved_regs (frame)[IA64_GR0_REGNUM + rM] = spill_addr;
+ cache->saved_regs[IA64_GR0_REGNUM + rM] = spill_addr;
if ((instr & 0x1efc0000000LL) == 0x0aec0000000LL)
/* st8.spill [rN] = rM, imm9 */
spill_addr += imm9(instr);
pc = next_pc;
}
- if (do_fsr_stuff) {
- int i;
- CORE_ADDR addr;
- int sor, rrb_gr;
-
- /* Extract the size of the rotating portion of the stack
- frame and the register rename base from the current
- frame marker. */
- sor = ((frame->extra_info->cfm >> 14) & 0xf) * 8;
- rrb_gr = (frame->extra_info->cfm >> 18) & 0x7f;
-
- for (i = 0, addr = frame->extra_info->bsp;
- i < frame->extra_info->sof;
- i++, addr += 8)
- {
- if (IS_NaT_COLLECTION_ADDR (addr))
- {
- addr += 8;
- }
- if (i < sor)
- get_frame_saved_regs (frame)[IA64_GR32_REGNUM + ((i + (sor - rrb_gr)) % sor)]
- = addr;
- else
- get_frame_saved_regs (frame)[IA64_GR32_REGNUM + i] = addr;
-
- if (i+32 == cfm_reg)
- get_frame_saved_regs (frame)[IA64_CFM_REGNUM] = addr;
- if (i+32 == ret_reg)
- get_frame_saved_regs (frame)[IA64_VRAP_REGNUM] = addr;
- if (i+32 == fp_reg)
- get_frame_saved_regs (frame)[IA64_VFP_REGNUM] = addr;
- }
- }
+ /* If not frameless and we aren't called by skip_prologue, then we need to calculate
+ registers for the previous frame which will be needed later. */
+
+ if (!frameless && next_frame)
+ {
+ /* Extract the size of the rotating portion of the stack
+ frame and the register rename base from the current
+ frame marker. */
+ cfm = cache->cfm;
+ sor = cache->sor;
+ sof = cache->sof;
+ sol = cache->sol;
+ rrb_gr = (cfm >> 18) & 0x7f;
+
+ /* Find the bof (beginning of frame). */
+ bof = rse_address_add (cache->bsp, -sof);
+
+ for (i = 0, addr = bof;
+ i < sof;
+ i++, addr += 8)
+ {
+ if (IS_NaT_COLLECTION_ADDR (addr))
+ {
+ addr += 8;
+ }
+ if (i+32 == cfm_reg)
+ cache->saved_regs[IA64_CFM_REGNUM] = addr;
+ if (i+32 == ret_reg)
+ cache->saved_regs[IA64_VRAP_REGNUM] = addr;
+ if (i+32 == fp_reg)
+ cache->saved_regs[IA64_VFP_REGNUM] = addr;
+ }
+
+ /* For the previous argument registers we require the previous bof.
+ If we can't find the previous cfm, then we can do nothing. */
+ cfm = 0;
+ if (cache->saved_regs[IA64_CFM_REGNUM] != 0)
+ {
+ cfm = read_memory_integer (cache->saved_regs[IA64_CFM_REGNUM], 8);
+ }
+ else if (cfm_reg != 0)
+ {
+ frame_unwind_register (next_frame, cfm_reg, buf);
+ cfm = extract_unsigned_integer (buf, 8);
+ }
+ cache->prev_cfm = cfm;
+
+ if (cfm != 0)
+ {
+ sor = ((cfm >> 14) & 0xf) * 8;
+ sof = (cfm & 0x7f);
+ sol = (cfm >> 7) & 0x7f;
+ rrb_gr = (cfm >> 18) & 0x7f;
+
+ /* The previous bof only requires subtraction of the sol (size of locals)
+ due to the overlap between output and input of subsequent frames. */
+ bof = rse_address_add (bof, -sol);
+
+ for (i = 0, addr = bof;
+ i < sof;
+ i++, addr += 8)
+ {
+ if (IS_NaT_COLLECTION_ADDR (addr))
+ {
+ addr += 8;
+ }
+ if (i < sor)
+ cache->saved_regs[IA64_GR32_REGNUM + ((i + (sor - rrb_gr)) % sor)]
+ = addr;
+ else
+ cache->saved_regs[IA64_GR32_REGNUM + i] = addr;
+ }
+
+ }
+ }
+
+ /* Try and trust the lim_pc value whenever possible. */
+ if (trust_limit && lim_pc >= last_prologue_pc)
+ last_prologue_pc = lim_pc;
- if (frame && frame->extra_info) {
- frame->extra_info->after_prologue = last_prologue_pc;
- frame->extra_info->mem_stack_frame_size = mem_stack_frame_size;
- frame->extra_info->fp_reg = fp_reg;
- }
+ cache->frameless = frameless;
+ cache->after_prologue = last_prologue_pc;
+ cache->mem_stack_frame_size = mem_stack_frame_size;
+ cache->fp_reg = fp_reg;
return last_prologue_pc;
}
CORE_ADDR
ia64_skip_prologue (CORE_ADDR pc)
{
- return examine_prologue (pc, pc+1024, 0);
+ struct ia64_frame_cache cache;
+ cache.base = 0;
+ cache.after_prologue = 0;
+ cache.cfm = 0;
+ cache.bsp = 0;
+
+ /* Call examine_prologue with - as third argument since we don't have a next frame pointer to send. */
+ return examine_prologue (pc, pc+1024, 0, &cache);
}
-void
-ia64_frame_init_saved_regs (struct frame_info *frame)
+
+/* Normal frames. */
+
+static struct ia64_frame_cache *
+ia64_frame_cache (struct frame_info *next_frame, void **this_cache)
{
- if (get_frame_saved_regs (frame))
- return;
+ struct ia64_frame_cache *cache;
+ char buf[8];
+ CORE_ADDR cfm, sof, sol, bsp, psr;
+ int i;
- if ((get_frame_type (frame) == SIGTRAMP_FRAME) && SIGCONTEXT_REGISTER_ADDRESS)
- {
- int regno;
+ if (*this_cache)
+ return *this_cache;
- frame_saved_regs_zalloc (frame);
+ cache = ia64_alloc_frame_cache ();
+ *this_cache = cache;
- get_frame_saved_regs (frame)[IA64_VRAP_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_IP_REGNUM);
- get_frame_saved_regs (frame)[IA64_CFM_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_CFM_REGNUM);
- get_frame_saved_regs (frame)[IA64_PSR_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_PSR_REGNUM);
-#if 0
- get_frame_saved_regs (frame)[IA64_BSP_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (frame->frame, IA64_BSP_REGNUM);
-#endif
- get_frame_saved_regs (frame)[IA64_RNAT_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_RNAT_REGNUM);
- get_frame_saved_regs (frame)[IA64_CCV_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_CCV_REGNUM);
- get_frame_saved_regs (frame)[IA64_UNAT_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_UNAT_REGNUM);
- get_frame_saved_regs (frame)[IA64_FPSR_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_FPSR_REGNUM);
- get_frame_saved_regs (frame)[IA64_PFS_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_PFS_REGNUM);
- get_frame_saved_regs (frame)[IA64_LC_REGNUM] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), IA64_LC_REGNUM);
- for (regno = IA64_GR1_REGNUM; regno <= IA64_GR31_REGNUM; regno++)
- if (regno != sp_regnum)
- get_frame_saved_regs (frame)[regno] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), regno);
- for (regno = IA64_BR0_REGNUM; regno <= IA64_BR7_REGNUM; regno++)
- get_frame_saved_regs (frame)[regno] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), regno);
- for (regno = IA64_FR2_REGNUM; regno <= IA64_BR7_REGNUM; regno++)
- get_frame_saved_regs (frame)[regno] =
- SIGCONTEXT_REGISTER_ADDRESS (get_frame_base (frame), regno);
- }
- else
- {
- CORE_ADDR func_start;
+ frame_unwind_register (next_frame, sp_regnum, buf);
+ cache->saved_sp = extract_unsigned_integer (buf, 8);
- func_start = get_pc_function_start (get_frame_pc (frame));
- examine_prologue (func_start, get_frame_pc (frame), frame);
- }
+ /* We always want the bsp to point to the end of frame.
+ This way, we can always get the beginning of frame (bof)
+ by subtracting frame size. */
+ frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ cache->bsp = extract_unsigned_integer (buf, 8);
+
+ frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
+ psr = extract_unsigned_integer (buf, 8);
+
+ frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
+ cfm = extract_unsigned_integer (buf, 8);
+
+ cache->sof = (cfm & 0x7f);
+ cache->sol = (cfm >> 7) & 0x7f;
+ cache->sor = ((cfm >> 14) & 0xf) * 8;
+
+ cache->cfm = cfm;
+
+ cache->pc = frame_func_unwind (next_frame);
+
+ if (cache->pc != 0)
+ examine_prologue (cache->pc, frame_pc_unwind (next_frame), next_frame, cache);
+
+ cache->base = cache->saved_sp + cache->mem_stack_frame_size;
+
+ return cache;
}
-void
-ia64_get_saved_register (char *raw_buffer,
- int *optimized,
- CORE_ADDR *addrp,
- struct frame_info *frame,
- int regnum,
- enum lval_type *lval)
+static void
+ia64_frame_this_id (struct frame_info *next_frame, void **this_cache,
+ struct frame_id *this_id)
{
- int is_dummy_frame;
+ struct ia64_frame_cache *cache =
+ ia64_frame_cache (next_frame, this_cache);
- if (!target_has_registers)
- error ("No registers.");
+ /* This marks the outermost frame. */
+ if (cache->base == 0)
+ return;
+
+ (*this_id) = frame_id_build_special (cache->base, cache->pc, cache->bsp);
+ if (gdbarch_debug >= 1)
+ fprintf_unfiltered (gdb_stdlog,
+ "regular frame id: code %lx, stack %lx, special %lx, next_frame %p\n",
+ this_id->code_addr, this_id->stack_addr, cache->bsp, next_frame);
+}
- if (optimized != NULL)
- *optimized = 0;
+static void
+ia64_frame_prev_register (struct frame_info *next_frame, void **this_cache,
+ int regnum, int *optimizedp,
+ enum lval_type *lvalp, CORE_ADDR *addrp,
+ int *realnump, void *valuep)
+{
+ struct ia64_frame_cache *cache =
+ ia64_frame_cache (next_frame, this_cache);
+ char dummy_valp[MAX_REGISTER_SIZE];
+ char buf[8];
- if (addrp != NULL)
- *addrp = 0;
+ gdb_assert (regnum >= 0);
- if (lval != NULL)
- *lval = not_lval;
+ if (!target_has_registers)
+ error ("No registers.");
- is_dummy_frame = DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (frame),
- get_frame_base (frame),
- get_frame_base (frame));
+ *optimizedp = 0;
+ *addrp = 0;
+ *lvalp = not_lval;
+ *realnump = -1;
- if (regnum == SP_REGNUM && get_next_frame (frame))
+ /* Rather than check each time if valuep is non-null, supply a dummy buffer
+ when valuep is not supplied. */
+ if (!valuep)
+ valuep = dummy_valp;
+
+ memset (valuep, 0, register_size (current_gdbarch, regnum));
+
+ if (regnum == SP_REGNUM)
{
/* Handle SP values for all frames but the topmost. */
- store_address (raw_buffer, REGISTER_RAW_SIZE (regnum),
- get_frame_base (frame));
+ store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
+ cache->base);
}
else if (regnum == IA64_BSP_REGNUM)
{
- store_address (raw_buffer, REGISTER_RAW_SIZE (regnum),
- frame->extra_info->bsp);
+ char cfm_valuep[MAX_REGISTER_SIZE];
+ int cfm_optim;
+ int cfm_realnum;
+ enum lval_type cfm_lval;
+ CORE_ADDR cfm_addr;
+ CORE_ADDR bsp, prev_cfm, prev_bsp;
+
+ /* We want to calculate the previous bsp as the end of the previous register stack frame.
+ This corresponds to what the hardware bsp register will be if we pop the frame
+ back which is why we might have been called. We know the beginning of the current
+ frame is cache->bsp - cache->sof. This value in the previous frame points to
+ the start of the output registers. We can calculate the end of that frame by adding
+ the size of output (sof (size of frame) - sol (size of locals)). */
+ ia64_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
+ &cfm_optim, &cfm_lval, &cfm_addr, &cfm_realnum, cfm_valuep);
+ prev_cfm = extract_unsigned_integer (cfm_valuep, 8);
+
+ bsp = rse_address_add (cache->bsp, -(cache->sof));
+ prev_bsp = rse_address_add (bsp, (prev_cfm & 0x7f) - ((prev_cfm >> 7) & 0x7f));
+
+ store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
+ prev_bsp);
+ }
+ else if (regnum == IA64_CFM_REGNUM)
+ {
+ CORE_ADDR addr = cache->saved_regs[IA64_CFM_REGNUM];
+
+ if (addr != 0)
+ {
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, valuep, register_size (current_gdbarch, regnum));
+ }
+ else if (cache->prev_cfm)
+ store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), cache->prev_cfm);
+ else if (cache->frameless)
+ {
+ CORE_ADDR cfm = 0;
+ frame_unwind_register (next_frame, IA64_PFS_REGNUM, valuep);
+ }
}
else if (regnum == IA64_VFP_REGNUM)
{
/* If the function in question uses an automatic register (r32-r127)
for the frame pointer, it'll be found by ia64_find_saved_register()
above. If the function lacks one of these frame pointers, we can
- still provide a value since we know the size of the frame */
- CORE_ADDR vfp = (get_frame_base (frame)
- + frame->extra_info->mem_stack_frame_size);
- store_address (raw_buffer, REGISTER_RAW_SIZE (IA64_VFP_REGNUM), vfp);
+ still provide a value since we know the size of the frame. */
+ CORE_ADDR vfp = cache->base;
+ store_unsigned_integer (valuep, register_size (current_gdbarch, IA64_VFP_REGNUM), vfp);
}
- else if (IA64_PR0_REGNUM <= regnum && regnum <= IA64_PR63_REGNUM)
+ else if (VP0_REGNUM <= regnum && regnum <= VP63_REGNUM)
{
- char *pr_raw_buffer = alloca (MAX_REGISTER_RAW_SIZE);
+ char pr_valuep[MAX_REGISTER_SIZE];
int pr_optim;
+ int pr_realnum;
enum lval_type pr_lval;
CORE_ADDR pr_addr;
- int prN_val;
- ia64_get_saved_register (pr_raw_buffer, &pr_optim, &pr_addr,
- frame, IA64_PR_REGNUM, &pr_lval);
- if (IA64_PR16_REGNUM <= regnum && regnum <= IA64_PR63_REGNUM)
+ ULONGEST prN_val;
+ ia64_frame_prev_register (next_frame, this_cache, IA64_PR_REGNUM,
+ &pr_optim, &pr_lval, &pr_addr, &pr_realnum, pr_valuep);
+ if (VP16_REGNUM <= regnum && regnum <= VP63_REGNUM)
{
/* Fetch predicate register rename base from current frame
- marker for this frame. */
- int rrb_pr = (frame->extra_info->cfm >> 32) & 0x3f;
+ marker for this frame. */
+ int rrb_pr = (cache->cfm >> 32) & 0x3f;
- /* Adjust the register number to account for register rotation. */
- regnum = IA64_PR16_REGNUM
- + ((regnum - IA64_PR16_REGNUM) + rrb_pr) % 48;
+ /* Adjust the register number to account for register rotation. */
+ regnum = VP16_REGNUM
+ + ((regnum - VP16_REGNUM) + rrb_pr) % 48;
}
- prN_val = extract_bit_field ((unsigned char *) pr_raw_buffer,
- regnum - IA64_PR0_REGNUM, 1);
- store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), prN_val);
+ prN_val = extract_bit_field ((unsigned char *) pr_valuep,
+ regnum - VP0_REGNUM, 1);
+ store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), prN_val);
}
else if (IA64_NAT0_REGNUM <= regnum && regnum <= IA64_NAT31_REGNUM)
{
- char *unat_raw_buffer = alloca (MAX_REGISTER_RAW_SIZE);
+ char unat_valuep[MAX_REGISTER_SIZE];
int unat_optim;
+ int unat_realnum;
enum lval_type unat_lval;
CORE_ADDR unat_addr;
- int unatN_val;
- ia64_get_saved_register (unat_raw_buffer, &unat_optim, &unat_addr,
- frame, IA64_UNAT_REGNUM, &unat_lval);
- unatN_val = extract_bit_field ((unsigned char *) unat_raw_buffer,
+ ULONGEST unatN_val;
+ ia64_frame_prev_register (next_frame, this_cache, IA64_UNAT_REGNUM,
+ &unat_optim, &unat_lval, &unat_addr, &unat_realnum, unat_valuep);
+ unatN_val = extract_bit_field ((unsigned char *) unat_valuep,
regnum - IA64_NAT0_REGNUM, 1);
- store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum),
+ store_unsigned_integer (valuep, register_size (current_gdbarch, regnum),
unatN_val);
}
else if (IA64_NAT32_REGNUM <= regnum && regnum <= IA64_NAT127_REGNUM)
{
int natval = 0;
/* Find address of general register corresponding to nat bit we're
- interested in. */
- CORE_ADDR gr_addr = 0;
+ interested in. */
+ CORE_ADDR gr_addr;
- if (!is_dummy_frame)
- {
- FRAME_INIT_SAVED_REGS (frame);
- gr_addr = get_frame_saved_regs (frame)[ regnum - IA64_NAT0_REGNUM
- + IA64_GR0_REGNUM];
- }
- if (gr_addr)
+ gr_addr = cache->saved_regs[regnum - IA64_NAT0_REGNUM
+ + IA64_GR0_REGNUM];
+ if (gr_addr != 0)
{
- /* Compute address of nat collection bits */
+ /* Compute address of nat collection bits. */
CORE_ADDR nat_addr = gr_addr | 0x1f8;
- CORE_ADDR bsp = read_register (IA64_BSP_REGNUM);
+ CORE_ADDR bsp;
CORE_ADDR nat_collection;
int nat_bit;
/* If our nat collection address is bigger than bsp, we have to get
the nat collection from rnat. Otherwise, we fetch the nat
- collection from the computed address. */
+ collection from the computed address. */
+ frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ bsp = extract_unsigned_integer (buf, 8);
if (nat_addr >= bsp)
- nat_collection = read_register (IA64_RNAT_REGNUM);
+ {
+ frame_unwind_register (next_frame, IA64_RNAT_REGNUM, buf);
+ nat_collection = extract_unsigned_integer (buf, 8);
+ }
else
nat_collection = read_memory_integer (nat_addr, 8);
nat_bit = (gr_addr >> 3) & 0x3f;
natval = (nat_collection >> nat_bit) & 1;
}
- store_unsigned_integer (raw_buffer, REGISTER_RAW_SIZE (regnum), natval);
+
+ store_unsigned_integer (valuep, register_size (current_gdbarch, regnum), natval);
}
else if (regnum == IA64_IP_REGNUM)
{
- CORE_ADDR pc;
- if (get_next_frame (frame))
- {
- /* FIXME: Set *addrp, *lval when possible. */
- pc = ia64_frame_saved_pc (get_next_frame (frame));
- }
- else
- {
- pc = read_pc ();
+ CORE_ADDR pc = 0;
+ CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
+
+ if (addr != 0)
+ {
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
+ pc = extract_unsigned_integer (buf, 8);
+ }
+ else if (cache->frameless)
+ {
+ frame_unwind_register (next_frame, IA64_BR0_REGNUM, buf);
+ pc = extract_unsigned_integer (buf, 8);
}
- store_address (raw_buffer, REGISTER_RAW_SIZE (IA64_IP_REGNUM), pc);
+ pc &= ~0xf;
+ store_unsigned_integer (valuep, 8, pc);
}
- else if (IA64_GR32_REGNUM <= regnum && regnum <= IA64_GR127_REGNUM)
+ else if (regnum == IA64_PSR_REGNUM)
{
- CORE_ADDR addr = 0;
- if (!is_dummy_frame)
+ /* We don't know how to get the complete previous PSR, but we need it for
+ the slot information when we unwind the pc (pc is formed of IP register
+ plus slot information from PSR). To get the previous slot information,
+ we mask it off the return address. */
+ ULONGEST slot_num = 0;
+ CORE_ADDR pc= 0;
+ CORE_ADDR psr = 0;
+ CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
+
+ frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
+ psr = extract_unsigned_integer (buf, 8);
+
+ if (addr != 0)
{
- FRAME_INIT_SAVED_REGS (frame);
- addr = get_frame_saved_regs (frame)[regnum];
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
+ pc = extract_unsigned_integer (buf, 8);
}
-
+ else if (cache->frameless)
+ {
+ CORE_ADDR pc;
+ frame_unwind_register (next_frame, IA64_BR0_REGNUM, buf);
+ pc = extract_unsigned_integer (buf, 8);
+ }
+ psr &= ~(3LL << 41);
+ slot_num = pc & 0x3LL;
+ psr |= (CORE_ADDR)slot_num << 41;
+ store_unsigned_integer (valuep, 8, psr);
+ }
+ else if (regnum == IA64_BR0_REGNUM)
+ {
+ CORE_ADDR br0 = 0;
+ CORE_ADDR addr = cache->saved_regs[IA64_BR0_REGNUM];
if (addr != 0)
{
- if (lval != NULL)
- *lval = lval_memory;
- if (addrp != NULL)
- *addrp = addr;
- read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum));
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, buf, register_size (current_gdbarch, IA64_BR0_REGNUM));
+ br0 = extract_unsigned_integer (buf, 8);
}
- else
+ store_unsigned_integer (valuep, 8, br0);
+ }
+ else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) ||
+ (regnum >= V32_REGNUM && regnum <= V127_REGNUM))
+ {
+ CORE_ADDR addr = 0;
+ if (regnum >= V32_REGNUM)
+ regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
+ addr = cache->saved_regs[regnum];
+ if (addr != 0)
+ {
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, valuep, register_size (current_gdbarch, regnum));
+ }
+ else if (cache->frameless)
{
- /* r32 - r127 must be fetchable via memory. If they aren't,
- then the register is unavailable */
- memset (raw_buffer, 0, REGISTER_RAW_SIZE (regnum));
+ char r_valuep[MAX_REGISTER_SIZE];
+ int r_optim;
+ int r_realnum;
+ enum lval_type r_lval;
+ CORE_ADDR r_addr;
+ CORE_ADDR prev_cfm, prev_bsp, prev_bof;
+ CORE_ADDR addr = 0;
+ if (regnum >= V32_REGNUM)
+ regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
+ ia64_frame_prev_register (next_frame, this_cache, IA64_CFM_REGNUM,
+ &r_optim, &r_lval, &r_addr, &r_realnum, r_valuep);
+ prev_cfm = extract_unsigned_integer (r_valuep, 8);
+ ia64_frame_prev_register (next_frame, this_cache, IA64_BSP_REGNUM,
+ &r_optim, &r_lval, &r_addr, &r_realnum, r_valuep);
+ prev_bsp = extract_unsigned_integer (r_valuep, 8);
+ prev_bof = rse_address_add (prev_bsp, -(prev_cfm & 0x7f));
+
+ addr = rse_address_add (prev_bof, (regnum - IA64_GR32_REGNUM));
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, valuep, register_size (current_gdbarch, regnum));
}
}
else
{
+ CORE_ADDR addr = 0;
if (IA64_FR32_REGNUM <= regnum && regnum <= IA64_FR127_REGNUM)
{
/* Fetch floating point register rename base from current
- frame marker for this frame. */
- int rrb_fr = (frame->extra_info->cfm >> 25) & 0x7f;
+ frame marker for this frame. */
+ int rrb_fr = (cache->cfm >> 25) & 0x7f;
/* Adjust the floating point register number to account for
- register rotation. */
+ register rotation. */
regnum = IA64_FR32_REGNUM
+ ((regnum - IA64_FR32_REGNUM) + rrb_fr) % 96;
}
- deprecated_generic_get_saved_register (raw_buffer, optimized, addrp,
- frame, regnum, lval);
+ /* If we have stored a memory address, access the register. */
+ addr = cache->saved_regs[regnum];
+ if (addr != 0)
+ {
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, valuep, register_size (current_gdbarch, regnum));
+ }
+ /* Otherwise, punt and get the current value of the register. */
+ else
+ frame_unwind_register (next_frame, regnum, valuep);
}
+
+ if (gdbarch_debug >= 1)
+ fprintf_unfiltered (gdb_stdlog,
+ "regular prev register <%d> <%s> is %lx\n", regnum,
+ (((unsigned) regnum <= IA64_NAT127_REGNUM)
+ ? ia64_register_names[regnum] : "r??"), extract_unsigned_integer (valuep, 8));
+}
+
+static const struct frame_unwind ia64_frame_unwind =
+{
+ NORMAL_FRAME,
+ &ia64_frame_this_id,
+ &ia64_frame_prev_register
+};
+
+static const struct frame_unwind *
+ia64_frame_sniffer (struct frame_info *next_frame)
+{
+ return &ia64_frame_unwind;
+}
+
+/* Signal trampolines. */
+
+static void
+ia64_sigtramp_frame_init_saved_regs (struct ia64_frame_cache *cache)
+{
+ if (SIGCONTEXT_REGISTER_ADDRESS)
+ {
+ int regno;
+
+ cache->saved_regs[IA64_VRAP_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_IP_REGNUM);
+ cache->saved_regs[IA64_CFM_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_CFM_REGNUM);
+ cache->saved_regs[IA64_PSR_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_PSR_REGNUM);
+ cache->saved_regs[IA64_BSP_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_BSP_REGNUM);
+ cache->saved_regs[IA64_RNAT_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_RNAT_REGNUM);
+ cache->saved_regs[IA64_CCV_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_CCV_REGNUM);
+ cache->saved_regs[IA64_UNAT_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_UNAT_REGNUM);
+ cache->saved_regs[IA64_FPSR_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_FPSR_REGNUM);
+ cache->saved_regs[IA64_PFS_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_PFS_REGNUM);
+ cache->saved_regs[IA64_LC_REGNUM] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, IA64_LC_REGNUM);
+ for (regno = IA64_GR1_REGNUM; regno <= IA64_GR31_REGNUM; regno++)
+ cache->saved_regs[regno] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
+ for (regno = IA64_BR0_REGNUM; regno <= IA64_BR7_REGNUM; regno++)
+ cache->saved_regs[regno] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
+ for (regno = IA64_FR2_REGNUM; regno <= IA64_FR31_REGNUM; regno++)
+ cache->saved_regs[regno] =
+ SIGCONTEXT_REGISTER_ADDRESS (cache->base, regno);
+ }
+}
+
+static struct ia64_frame_cache *
+ia64_sigtramp_frame_cache (struct frame_info *next_frame, void **this_cache)
+{
+ struct ia64_frame_cache *cache;
+ CORE_ADDR addr;
+ char buf[8];
+ int i;
+
+ if (*this_cache)
+ return *this_cache;
+
+ cache = ia64_alloc_frame_cache ();
+
+ frame_unwind_register (next_frame, sp_regnum, buf);
+ /* Note that frame size is hard-coded below. We cannot calculate it
+ via prologue examination. */
+ cache->base = extract_unsigned_integer (buf, 8) + 16;
+
+ frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ cache->bsp = extract_unsigned_integer (buf, 8);
+
+ frame_unwind_register (next_frame, IA64_CFM_REGNUM, buf);
+ cache->cfm = extract_unsigned_integer (buf, 8);
+ cache->sof = cache->cfm & 0x7f;
+
+ ia64_sigtramp_frame_init_saved_regs (cache);
+
+ *this_cache = cache;
+ return cache;
+}
+
+static void
+ia64_sigtramp_frame_this_id (struct frame_info *next_frame,
+ void **this_cache, struct frame_id *this_id)
+{
+ struct ia64_frame_cache *cache =
+ ia64_sigtramp_frame_cache (next_frame, this_cache);
+
+ (*this_id) = frame_id_build_special (cache->base, frame_pc_unwind (next_frame), cache->bsp);
+ if (gdbarch_debug >= 1)
+ fprintf_unfiltered (gdb_stdlog,
+ "sigtramp frame id: code %lx, stack %lx, special %lx, next_frame %p\n",
+ this_id->code_addr, this_id->stack_addr, cache->bsp, next_frame);
}
+static void
+ia64_sigtramp_frame_prev_register (struct frame_info *next_frame,
+ void **this_cache,
+ int regnum, int *optimizedp,
+ enum lval_type *lvalp, CORE_ADDR *addrp,
+ int *realnump, void *valuep)
+{
+ char dummy_valp[MAX_REGISTER_SIZE];
+ char buf[MAX_REGISTER_SIZE];
+
+ struct ia64_frame_cache *cache =
+ ia64_sigtramp_frame_cache (next_frame, this_cache);
+
+ gdb_assert (regnum >= 0);
+
+ if (!target_has_registers)
+ error ("No registers.");
+
+ *optimizedp = 0;
+ *addrp = 0;
+ *lvalp = not_lval;
+ *realnump = -1;
+
+ /* Rather than check each time if valuep is non-null, supply a dummy buffer
+ when valuep is not supplied. */
+ if (!valuep)
+ valuep = dummy_valp;
+
+ memset (valuep, 0, register_size (current_gdbarch, regnum));
+
+ if (regnum == IA64_IP_REGNUM)
+ {
+ CORE_ADDR pc = 0;
+ CORE_ADDR addr = cache->saved_regs[IA64_VRAP_REGNUM];
+
+ if (addr != 0)
+ {
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, buf, register_size (current_gdbarch, IA64_IP_REGNUM));
+ pc = extract_unsigned_integer (buf, 8);
+ }
+ pc &= ~0xf;
+ store_unsigned_integer (valuep, 8, pc);
+ }
+ else if ((regnum >= IA64_GR32_REGNUM && regnum <= IA64_GR127_REGNUM) ||
+ (regnum >= V32_REGNUM && regnum <= V127_REGNUM))
+ {
+ CORE_ADDR addr = 0;
+ if (regnum >= V32_REGNUM)
+ regnum = IA64_GR32_REGNUM + (regnum - V32_REGNUM);
+ addr = cache->saved_regs[regnum];
+ if (addr != 0)
+ {
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, valuep, register_size (current_gdbarch, regnum));
+ }
+ }
+ else
+ {
+ /* All other registers not listed above. */
+ CORE_ADDR addr = cache->saved_regs[regnum];
+ if (addr != 0)
+ {
+ *lvalp = lval_memory;
+ *addrp = addr;
+ read_memory (addr, valuep, register_size (current_gdbarch, regnum));
+ }
+ }
+
+ if (gdbarch_debug >= 1)
+ fprintf_unfiltered (gdb_stdlog,
+ "sigtramp prev register <%s> is %lx\n",
+ (((unsigned) regnum <= IA64_NAT127_REGNUM)
+ ? ia64_register_names[regnum] : "r??"), extract_unsigned_integer (valuep, 8));
+}
+
+static const struct frame_unwind ia64_sigtramp_frame_unwind =
+{
+ SIGTRAMP_FRAME,
+ ia64_sigtramp_frame_this_id,
+ ia64_sigtramp_frame_prev_register
+};
+
+static const struct frame_unwind *
+ia64_sigtramp_frame_sniffer (struct frame_info *next_frame)
+{
+ char *name;
+ CORE_ADDR pc = frame_pc_unwind (next_frame);
+
+ find_pc_partial_function (pc, &name, NULL, NULL);
+ if (PC_IN_SIGTRAMP (pc, name))
+ return &ia64_sigtramp_frame_unwind;
+
+ return NULL;
+}
+\f
+
+static CORE_ADDR
+ia64_frame_base_address (struct frame_info *next_frame, void **this_cache)
+{
+ struct ia64_frame_cache *cache =
+ ia64_frame_cache (next_frame, this_cache);
+
+ return cache->base;
+}
+
+static const struct frame_base ia64_frame_base =
+{
+ &ia64_frame_unwind,
+ ia64_frame_base_address,
+ ia64_frame_base_address,
+ ia64_frame_base_address
+};
+
/* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of
EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc
and TYPE is the type (which is known to be struct, union or array). */
/* HFAs are structures (or arrays) consisting entirely of floating
point values of the same length. Up to 8 of these are returned
in registers. Don't use the struct convention when this is the
- case. */
+ case. */
float_elt_type = is_float_or_hfa_type (type);
if (float_elt_type != NULL
&& TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type) <= 8)
return 0;
/* Other structs of length 32 or less are returned in r8-r11.
- Don't use the struct convention for those either. */
+ Don't use the struct convention for those either. */
return TYPE_LENGTH (type) > 32;
}
void
-ia64_extract_return_value (struct type *type, char *regbuf, char *valbuf)
+ia64_extract_return_value (struct type *type, struct regcache *regcache, void *valbuf)
{
struct type *float_elt_type;
float_elt_type = is_float_or_hfa_type (type);
if (float_elt_type != NULL)
{
+ char from[MAX_REGISTER_SIZE];
int offset = 0;
int regnum = IA64_FR8_REGNUM;
int n = TYPE_LENGTH (type) / TYPE_LENGTH (float_elt_type);
while (n-- > 0)
{
- ia64_register_convert_to_virtual (regnum, float_elt_type,
- ®buf[REGISTER_BYTE (regnum)], valbuf + offset);
+ regcache_cooked_read (regcache, regnum, from);
+ convert_typed_floating (from, builtin_type_ia64_ext,
+ (char *)valbuf + offset, float_elt_type);
offset += TYPE_LENGTH (float_elt_type);
regnum++;
}
}
else
- memcpy (valbuf, ®buf[REGISTER_BYTE (IA64_GR8_REGNUM)],
- TYPE_LENGTH (type));
-}
-
-/* FIXME: Turn this into a stack of some sort. Unfortunately, something
- like this is necessary though since the IA-64 calling conventions specify
- that r8 is not preserved. */
-static CORE_ADDR struct_return_address;
-
-CORE_ADDR
-ia64_extract_struct_value_address (char *regbuf)
-{
- /* FIXME: See above. */
- return struct_return_address;
-}
-
-void
-ia64_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
-{
- /* FIXME: See above. */
- /* Note that most of the work was done in ia64_push_arguments() */
- struct_return_address = addr;
-}
-
-int
-ia64_frameless_function_invocation (struct frame_info *frame)
-{
- FRAME_INIT_SAVED_REGS (frame);
- return (frame->extra_info->mem_stack_frame_size == 0);
-}
+ {
+ ULONGEST val;
+ int offset = 0;
+ int regnum = IA64_GR8_REGNUM;
+ int reglen = TYPE_LENGTH (ia64_register_type (NULL, IA64_GR8_REGNUM));
+ int n = TYPE_LENGTH (type) / reglen;
+ int m = TYPE_LENGTH (type) % reglen;
-CORE_ADDR
-ia64_saved_pc_after_call (struct frame_info *frame)
-{
- return read_register (IA64_BR0_REGNUM);
-}
+ while (n-- > 0)
+ {
+ ULONGEST val;
+ regcache_cooked_read_unsigned (regcache, regnum, &val);
+ memcpy ((char *)valbuf + offset, &val, reglen);
+ offset += reglen;
+ regnum++;
+ }
-CORE_ADDR
-ia64_frame_args_address (struct frame_info *frame)
-{
- /* frame->frame points at the SP for this frame; But we want the start
- of the frame, not the end. Calling frame chain will get his for us. */
- return ia64_frame_chain (frame);
+ if (m)
+ {
+ regcache_cooked_read_unsigned (regcache, regnum, &val);
+ memcpy ((char *)valbuf + offset, &val, m);
+ }
+ }
}
CORE_ADDR
-ia64_frame_locals_address (struct frame_info *frame)
+ia64_extract_struct_value_address (struct regcache *regcache)
{
- /* frame->frame points at the SP for this frame; But we want the start
- of the frame, not the end. Calling frame chain will get his for us. */
- return ia64_frame_chain (frame);
+ error ("ia64_extract_struct_value_address called and cannot get struct value address");
+ return 0;
}
-void
-ia64_init_extra_frame_info (int fromleaf, struct frame_info *frame)
-{
- CORE_ADDR bsp, cfm;
- int next_frame_is_call_dummy = ((get_next_frame (frame) != NULL)
- && DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (get_next_frame (frame)),
- get_frame_base (get_next_frame (frame)),
- get_frame_base (get_next_frame (frame))));
-
- frame_extra_info_zalloc (frame, sizeof (struct frame_extra_info));
-
- if (get_next_frame (frame) == 0)
- {
- bsp = read_register (IA64_BSP_REGNUM);
- cfm = read_register (IA64_CFM_REGNUM);
-
- }
- else if ((get_frame_type (get_next_frame (frame)) == SIGTRAMP_FRAME))
- {
- bsp = read_sigcontext_register (get_next_frame (frame), IA64_BSP_REGNUM);
- cfm = read_sigcontext_register (get_next_frame (frame), IA64_CFM_REGNUM);
- }
- else if (next_frame_is_call_dummy)
- {
- bsp = deprecated_read_register_dummy (get_frame_pc (get_next_frame (frame)),
- get_frame_base (get_next_frame (frame)),
- IA64_BSP_REGNUM);
- cfm = deprecated_read_register_dummy (get_frame_pc (get_next_frame (frame)),
- get_frame_base (get_next_frame (frame)),
- IA64_CFM_REGNUM);
- }
- else
- {
- struct frame_info *frn = get_next_frame (frame);
-
- FRAME_INIT_SAVED_REGS (frn);
-
- if (get_frame_saved_regs (frn)[IA64_CFM_REGNUM] != 0)
- cfm = read_memory_integer (get_frame_saved_regs (frn)[IA64_CFM_REGNUM], 8);
- else if (get_next_frame (frn) && (get_frame_type (get_next_frame (frn)) == SIGTRAMP_FRAME))
- cfm = read_sigcontext_register (get_next_frame (frn), IA64_PFS_REGNUM);
- else if (get_next_frame (frn)
- && DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (get_next_frame (frn)),
- get_frame_base (get_next_frame (frn)),
- get_frame_base (get_next_frame (frn))))
- cfm = deprecated_read_register_dummy (get_frame_pc (get_next_frame (frn)),
- get_frame_base (get_next_frame (frn)),
- IA64_PFS_REGNUM);
- else
- cfm = read_register (IA64_PFS_REGNUM);
-
- bsp = frn->extra_info->bsp;
- }
- frame->extra_info->cfm = cfm;
- frame->extra_info->sof = cfm & 0x7f;
- frame->extra_info->sol = (cfm >> 7) & 0x7f;
- if (get_next_frame (frame) == 0
- || (get_frame_type (get_next_frame (frame)) == SIGTRAMP_FRAME)
- || next_frame_is_call_dummy)
- frame->extra_info->bsp = rse_address_add (bsp, -frame->extra_info->sof);
- else
- frame->extra_info->bsp = rse_address_add (bsp, -frame->extra_info->sol);
-
- frame->extra_info->after_prologue = 0;
- frame->extra_info->mem_stack_frame_size = -1; /* Not yet determined */
- frame->extra_info->fp_reg = 0;
-}
static int
is_float_or_hfa_type_recurse (struct type *t, struct type **etp)
/* Determine if the given type is one of the floating point types or
and HFA (which is a struct, array, or combination thereof whose
- bottom-most elements are all of the same floating point type.) */
+ bottom-most elements are all of the same floating point type). */
static struct type *
is_float_or_hfa_type (struct type *t)
/* Return 1 if the alignment of T is such that the next even slot
should be used. Return 0, if the next available slot should
be used. (See section 8.5.1 of the IA-64 Software Conventions
- and Runtime manual.) */
+ and Runtime manual). */
static int
slot_alignment_is_next_even (struct type *t)
status = target_read_memory (addr + 8, buf, sizeof (buf));
if (status != 0)
break;
- global_pointer = extract_address (buf, sizeof (buf));
+ global_pointer = extract_unsigned_integer (buf, sizeof (buf));
/* The payoff... */
return global_pointer;
/* Given a function's address, attempt to find (and return) the
corresponding (canonical) function descriptor. Return 0 if
- not found. */
+ not found. */
static CORE_ADDR
find_extant_func_descr (CORE_ADDR faddr)
{
struct obj_section *faddr_sect;
- /* Return early if faddr is already a function descriptor */
+ /* Return early if faddr is already a function descriptor. */
faddr_sect = find_pc_section (faddr);
if (faddr_sect && strcmp (faddr_sect->the_bfd_section->name, ".opd") == 0)
return faddr;
/* Attempt to find a function descriptor corresponding to the
given address. If none is found, construct one on the
- stack using the address at fdaptr */
+ stack using the address at fdaptr. */
static CORE_ADDR
find_func_descr (CORE_ADDR faddr, CORE_ADDR *fdaptr)
if (global_pointer == 0)
global_pointer = read_register (IA64_GR1_REGNUM);
- store_address (buf, 8, faddr);
- store_address (buf + 8, 8, global_pointer);
+ store_unsigned_integer (buf, 8, faddr);
+ store_unsigned_integer (buf + 8, 8, global_pointer);
write_memory (fdesc, buf, 16);
}
return fdesc;
}
-CORE_ADDR
-ia64_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+/* Use the following routine when printing out function pointers
+ so the user can see the function address rather than just the
+ function descriptor. */
+static CORE_ADDR
+ia64_convert_from_func_ptr_addr (struct gdbarch *gdbarch, CORE_ADDR addr,
+ struct target_ops *targ)
+{
+ struct obj_section *s;
+
+ s = find_pc_section (addr);
+
+ /* check if ADDR points to a function descriptor. */
+ if (s && strcmp (s->the_bfd_section->name, ".opd") == 0)
+ return read_memory_unsigned_integer (addr, 8);
+
+ return addr;
+}
+
+static CORE_ADDR
+ia64_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
+{
+ return sp & ~0xfLL;
+}
+
+static CORE_ADDR
+ia64_push_dummy_call (struct gdbarch *gdbarch, CORE_ADDR func_addr,
+ struct regcache *regcache, CORE_ADDR bp_addr,
+ int nargs, struct value **args, CORE_ADDR sp,
+ int struct_return, CORE_ADDR struct_addr)
{
int argno;
struct value *arg;
int len, argoffset;
int nslots, rseslots, memslots, slotnum, nfuncargs;
int floatreg;
- CORE_ADDR bsp, cfm, pfs, new_bsp, funcdescaddr;
+ CORE_ADDR bsp, cfm, pfs, new_bsp, funcdescaddr, pc, global_pointer;
nslots = 0;
nfuncargs = 0;
- /* Count the number of slots needed for the arguments */
+ /* Count the number of slots needed for the arguments. */
for (argno = 0; argno < nargs; argno++)
{
arg = args[argno];
nslots += (len + 7) / 8;
}
- /* Divvy up the slots between the RSE and the memory stack */
+ /* Divvy up the slots between the RSE and the memory stack. */
rseslots = (nslots > 8) ? 8 : nslots;
memslots = nslots - rseslots;
- /* Allocate a new RSE frame */
+ /* Allocate a new RSE frame. */
cfm = read_register (IA64_CFM_REGNUM);
bsp = read_register (IA64_BSP_REGNUM);
- bsp = rse_address_add (bsp, cfm & 0x7f);
new_bsp = rse_address_add (bsp, rseslots);
write_register (IA64_BSP_REGNUM, new_bsp);
/* We will attempt to find function descriptors in the .opd segment,
but if we can't we'll construct them ourselves. That being the
- case, we'll need to reserve space on the stack for them. */
+ case, we'll need to reserve space on the stack for them. */
funcdescaddr = sp - nfuncargs * 16;
funcdescaddr &= ~0xfLL;
/* Adjust the stack pointer to it's new value. The calling conventions
require us to have 16 bytes of scratch, plus whatever space is
- necessary for the memory slots and our function descriptors */
+ necessary for the memory slots and our function descriptors. */
sp = sp - 16 - (memslots + nfuncargs) * 8;
- sp &= ~0xfLL; /* Maintain 16 byte alignment */
+ sp &= ~0xfLL; /* Maintain 16 byte alignment. */
/* Place the arguments where they belong. The arguments will be
either placed in the RSE backing store or on the memory stack.
In addition, floating point arguments or HFAs are placed in
- floating point registers. */
+ floating point registers. */
slotnum = 0;
floatreg = IA64_FR8_REGNUM;
for (argno = 0; argno < nargs; argno++)
type = check_typedef (VALUE_TYPE (arg));
len = TYPE_LENGTH (type);
- /* Special handling for function parameters */
+ /* Special handling for function parameters. */
if (len == 8
&& TYPE_CODE (type) == TYPE_CODE_PTR
&& TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC)
{
char val_buf[8];
- store_address (val_buf, 8,
- find_func_descr (extract_address (VALUE_CONTENTS (arg), 8),
- &funcdescaddr));
+ store_unsigned_integer (val_buf, 8,
+ find_func_descr (extract_unsigned_integer (VALUE_CONTENTS (arg), 8),
+ &funcdescaddr));
if (slotnum < rseslots)
write_memory (rse_address_add (bsp, slotnum), val_buf, 8);
else
continue;
}
- /* Normal slots */
+ /* Normal slots. */
/* Skip odd slot if necessary... */
if ((slotnum & 1) && slot_alignment_is_next_even (type))
slotnum++;
}
- /* Handle floating point types (including HFAs) */
+ /* Handle floating point types (including HFAs). */
float_elt_type = is_float_or_hfa_type (type);
if (float_elt_type != NULL)
{
len = TYPE_LENGTH (type);
while (len > 0 && floatreg < IA64_FR16_REGNUM)
{
- ia64_register_convert_to_raw (
- float_elt_type,
- floatreg,
- VALUE_CONTENTS (arg) + argoffset,
- &deprecated_registers[REGISTER_BYTE (floatreg)]);
+ char to[MAX_REGISTER_SIZE];
+ convert_typed_floating (VALUE_CONTENTS (arg) + argoffset, float_elt_type,
+ to, builtin_type_ia64_ext);
+ regcache_cooked_write (regcache, floatreg, (void *)to);
floatreg++;
argoffset += TYPE_LENGTH (float_elt_type);
len -= TYPE_LENGTH (float_elt_type);
}
}
- /* Store the struct return value in r8 if necessary. */
+ /* Store the struct return value in r8 if necessary. */
if (struct_return)
{
- store_address (&deprecated_registers[REGISTER_BYTE (IA64_GR8_REGNUM)],
- REGISTER_RAW_SIZE (IA64_GR8_REGNUM),
- struct_addr);
+ regcache_cooked_write_unsigned (regcache, IA64_GR8_REGNUM, (ULONGEST)struct_addr);
}
- /* Sync gdb's idea of what the registers are with the target. */
- target_store_registers (-1);
+ global_pointer = FIND_GLOBAL_POINTER (func_addr);
- /* FIXME: This doesn't belong here! Instead, SAVE_DUMMY_FRAME_TOS needs
- to be defined to call generic_save_dummy_frame_tos(). But at the
- time of this writing, SAVE_DUMMY_FRAME_TOS wasn't gdbarch'd, so
- I chose to put this call here instead of using the old mechanisms.
- Once SAVE_DUMMY_FRAME_TOS is gdbarch'd, all we need to do is add the
- line
+ if (global_pointer != 0)
+ write_register (IA64_GR1_REGNUM, global_pointer);
- set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
+ write_register (IA64_BR0_REGNUM, bp_addr);
- to ia64_gdbarch_init() and remove the line below. */
- generic_save_dummy_frame_tos (sp);
+ write_register (sp_regnum, sp);
return sp;
}
-CORE_ADDR
-ia64_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
+static struct frame_id
+ia64_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
- CORE_ADDR global_pointer = FIND_GLOBAL_POINTER (pc);
+ char buf[8];
+ CORE_ADDR sp, bsp;
- if (global_pointer != 0)
- write_register (IA64_GR1_REGNUM, global_pointer);
+ frame_unwind_register (next_frame, sp_regnum, buf);
+ sp = extract_unsigned_integer (buf, 8);
- write_register (IA64_BR0_REGNUM, CALL_DUMMY_ADDRESS ());
- return sp;
-}
+ frame_unwind_register (next_frame, IA64_BSP_REGNUM, buf);
+ bsp = extract_unsigned_integer (buf, 8);
-void
-ia64_store_return_value (struct type *type, char *valbuf)
-{
- if (TYPE_CODE (type) == TYPE_CODE_FLT)
- {
- ia64_register_convert_to_raw (type, IA64_FR8_REGNUM, valbuf,
- &deprecated_registers[REGISTER_BYTE (IA64_FR8_REGNUM)]);
- target_store_registers (IA64_FR8_REGNUM);
- }
- else
- deprecated_write_register_bytes (REGISTER_BYTE (IA64_GR8_REGNUM),
- valbuf, TYPE_LENGTH (type));
+ if (gdbarch_debug >= 1)
+ fprintf_unfiltered (gdb_stdlog,
+ "dummy frame id: code %lx, stack %lx, special %lx\n",
+ frame_pc_unwind (next_frame), sp, bsp);
+
+ return frame_id_build_special (sp, frame_pc_unwind (next_frame), bsp);
}
-void
-ia64_pop_frame (void)
+static CORE_ADDR
+ia64_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
- generic_pop_current_frame (ia64_pop_frame_regular);
+ char buf[8];
+ CORE_ADDR ip, psr, pc;
+
+ frame_unwind_register (next_frame, IA64_IP_REGNUM, buf);
+ ip = extract_unsigned_integer (buf, 8);
+ frame_unwind_register (next_frame, IA64_PSR_REGNUM, buf);
+ psr = extract_unsigned_integer (buf, 8);
+
+ pc = (ip & ~0xf) | ((psr >> 41) & 3);
+ return pc;
}
static void
-ia64_pop_frame_regular (struct frame_info *frame)
+ia64_store_return_value (struct type *type, struct regcache *regcache, const void *valbuf)
{
- int regno;
- CORE_ADDR bsp, cfm, pfs;
-
- FRAME_INIT_SAVED_REGS (frame);
-
- for (regno = 0; regno < ia64_num_regs; regno++)
- {
- if (get_frame_saved_regs (frame)[regno]
- && (!(IA64_GR32_REGNUM <= regno && regno <= IA64_GR127_REGNUM))
- && regno != pc_regnum
- && regno != sp_regnum
- && regno != IA64_PFS_REGNUM
- && regno != IA64_CFM_REGNUM
- && regno != IA64_BSP_REGNUM
- && regno != IA64_BSPSTORE_REGNUM)
- {
- write_register (regno,
- read_memory_integer (get_frame_saved_regs (frame)[regno],
- REGISTER_RAW_SIZE (regno)));
- }
- }
-
- write_register (sp_regnum, FRAME_CHAIN (frame));
- write_pc (FRAME_SAVED_PC (frame));
-
- cfm = read_register (IA64_CFM_REGNUM);
-
- if (get_frame_saved_regs (frame)[IA64_PFS_REGNUM])
+ if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
- pfs = read_memory_integer (get_frame_saved_regs (frame)[IA64_PFS_REGNUM],
- REGISTER_RAW_SIZE (IA64_PFS_REGNUM));
+ char to[MAX_REGISTER_SIZE];
+ convert_typed_floating (valbuf, type, to, builtin_type_ia64_ext);
+ regcache_cooked_write (regcache, IA64_FR8_REGNUM, (void *)to);
+ target_store_registers (IA64_FR8_REGNUM);
}
else
- pfs = read_register (IA64_PFS_REGNUM);
-
- /* Compute the new bsp by *adding* the difference between the
- size of the frame and the size of the locals (both wrt the
- frame that we're going back to). This seems kind of strange,
- especially since it seems like we ought to be subtracting the
- size of the locals... and we should; but the Linux kernel
- wants bsp to be set at the end of all used registers. It's
- likely that this code will need to be revised to accomodate
- other operating systems. */
- bsp = rse_address_add (frame->extra_info->bsp,
- (pfs & 0x7f) - ((pfs >> 7) & 0x7f));
- write_register (IA64_BSP_REGNUM, bsp);
-
- /* FIXME: What becomes of the epilog count in the PFS? */
- cfm = (cfm & ~0xffffffffffffLL) | (pfs & 0xffffffffffffLL);
- write_register (IA64_CFM_REGNUM, cfm);
-
- flush_cached_frames ();
+ regcache_cooked_write (regcache, IA64_GR8_REGNUM, valbuf);
}
static void
-ia64_remote_translate_xfer_address (CORE_ADDR memaddr, int nr_bytes,
+ia64_remote_translate_xfer_address (struct gdbarch *gdbarch,
+ struct regcache *regcache,
+ CORE_ADDR memaddr, int nr_bytes,
CORE_ADDR *targ_addr, int *targ_len)
{
*targ_addr = memaddr;
{
int os_number = bfd_h_get_32 (abfd, note + 16);
- /* The case numbers are from abi-tags in glibc */
+ /* The case numbers are from abi-tags in glibc. */
switch (os_number)
{
case 0 :
}
}
+static int
+ia64_print_insn (bfd_vma memaddr, struct disassemble_info *info)
+{
+ info->bytes_per_line = SLOT_MULTIPLIER;
+ return print_insn_ia64 (memaddr, info);
+}
+
static struct gdbarch *
ia64_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
on a SYSV system. (ELFOSABI_NONE is defined to be 0.)
GNU/Linux uses a note section to record OS/ABI info, but
leaves e_ident[EI_OSABI] zero. So we have to check for note
- sections too. */
+ sections too. */
if (os_ident == 0)
{
bfd_map_over_sections (info.abfd,
gdbarch = gdbarch_alloc (&info, tdep);
tdep->os_ident = os_ident;
- /* NOTE: cagney/2002-12-06: This can be deleted when this arch is
- ready to unwind the PC first (see frame.c:get_prev_frame()). */
- set_gdbarch_deprecated_init_frame_pc (gdbarch, init_frame_pc_default);
-
/* Set the method of obtaining the sigcontext addresses at which
registers are saved. The method of checking to see if
native_find_global_pointer is nonzero to indicate that we're
else
tdep->find_global_pointer = generic_elf_find_global_pointer;
+ /* Define the ia64 floating-point format to gdb. */
+ builtin_type_ia64_ext =
+ init_type (TYPE_CODE_FLT, 128 / 8,
+ 0, "builtin_type_ia64_ext", NULL);
+ TYPE_FLOATFORMAT (builtin_type_ia64_ext) = &floatformat_ia64_ext;
+
set_gdbarch_short_bit (gdbarch, 16);
set_gdbarch_int_bit (gdbarch, 32);
set_gdbarch_long_bit (gdbarch, 64);
set_gdbarch_long_long_bit (gdbarch, 64);
set_gdbarch_float_bit (gdbarch, 32);
set_gdbarch_double_bit (gdbarch, 64);
- set_gdbarch_long_double_bit (gdbarch, 64);
+ set_gdbarch_long_double_bit (gdbarch, 128);
set_gdbarch_ptr_bit (gdbarch, 64);
- set_gdbarch_num_regs (gdbarch, ia64_num_regs);
+ set_gdbarch_num_regs (gdbarch, NUM_IA64_RAW_REGS);
+ set_gdbarch_num_pseudo_regs (gdbarch, LAST_PSEUDO_REGNUM - FIRST_PSEUDO_REGNUM);
set_gdbarch_sp_regnum (gdbarch, sp_regnum);
- set_gdbarch_fp_regnum (gdbarch, fp_regnum);
- set_gdbarch_pc_regnum (gdbarch, pc_regnum);
set_gdbarch_fp0_regnum (gdbarch, IA64_FR0_REGNUM);
set_gdbarch_register_name (gdbarch, ia64_register_name);
- set_gdbarch_register_size (gdbarch, 8);
- set_gdbarch_register_bytes (gdbarch, ia64_num_regs * 8 + 128*8);
- set_gdbarch_register_byte (gdbarch, ia64_register_byte);
- set_gdbarch_register_raw_size (gdbarch, ia64_register_raw_size);
- set_gdbarch_max_register_raw_size (gdbarch, 16);
- set_gdbarch_register_virtual_size (gdbarch, ia64_register_virtual_size);
- set_gdbarch_max_register_virtual_size (gdbarch, 16);
- set_gdbarch_register_virtual_type (gdbarch, ia64_register_virtual_type);
+ /* FIXME: Following interface should not be needed, however, without it recurse.exp
+ gets a number of extra failures. */
+ set_gdbarch_deprecated_register_size (gdbarch, 8);
+ set_gdbarch_register_type (gdbarch, ia64_register_type);
+
+ set_gdbarch_pseudo_register_read (gdbarch, ia64_pseudo_register_read);
+ set_gdbarch_pseudo_register_write (gdbarch, ia64_pseudo_register_write);
+ set_gdbarch_dwarf2_reg_to_regnum (gdbarch, ia64_dwarf_reg_to_regnum);
+ set_gdbarch_register_reggroup_p (gdbarch, ia64_register_reggroup_p);
+ set_gdbarch_convert_register_p (gdbarch, ia64_convert_register_p);
+ set_gdbarch_register_to_value (gdbarch, ia64_register_to_value);
+ set_gdbarch_value_to_register (gdbarch, ia64_value_to_register);
set_gdbarch_skip_prologue (gdbarch, ia64_skip_prologue);
- set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
- set_gdbarch_frameless_function_invocation (gdbarch, ia64_frameless_function_invocation);
-
- set_gdbarch_saved_pc_after_call (gdbarch, ia64_saved_pc_after_call);
-
- set_gdbarch_frame_chain (gdbarch, ia64_frame_chain);
- set_gdbarch_frame_saved_pc (gdbarch, ia64_frame_saved_pc);
-
- set_gdbarch_frame_init_saved_regs (gdbarch, ia64_frame_init_saved_regs);
- set_gdbarch_get_saved_register (gdbarch, ia64_get_saved_register);
-
- set_gdbarch_register_convertible (gdbarch, ia64_register_convertible);
- set_gdbarch_register_convert_to_virtual (gdbarch, ia64_register_convert_to_virtual);
- set_gdbarch_register_convert_to_raw (gdbarch, ia64_register_convert_to_raw);
-
set_gdbarch_use_struct_convention (gdbarch, ia64_use_struct_convention);
- set_gdbarch_deprecated_extract_return_value (gdbarch, ia64_extract_return_value);
+ set_gdbarch_extract_return_value (gdbarch, ia64_extract_return_value);
- set_gdbarch_store_struct_return (gdbarch, ia64_store_struct_return);
- set_gdbarch_deprecated_store_return_value (gdbarch, ia64_store_return_value);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, ia64_extract_struct_value_address);
+ set_gdbarch_store_return_value (gdbarch, ia64_store_return_value);
+ set_gdbarch_extract_struct_value_address (gdbarch, ia64_extract_struct_value_address);
set_gdbarch_memory_insert_breakpoint (gdbarch, ia64_memory_insert_breakpoint);
set_gdbarch_memory_remove_breakpoint (gdbarch, ia64_memory_remove_breakpoint);
set_gdbarch_write_pc (gdbarch, ia64_write_pc);
/* Settings for calling functions in the inferior. */
- set_gdbarch_call_dummy_length (gdbarch, 0);
- set_gdbarch_push_arguments (gdbarch, ia64_push_arguments);
- set_gdbarch_push_return_address (gdbarch, ia64_push_return_address);
- set_gdbarch_pop_frame (gdbarch, ia64_pop_frame);
-
- set_gdbarch_call_dummy_p (gdbarch, 1);
- set_gdbarch_call_dummy_words (gdbarch, ia64_call_dummy_words);
- set_gdbarch_sizeof_call_dummy_words (gdbarch, sizeof (ia64_call_dummy_words));
- set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
- set_gdbarch_init_extra_frame_info (gdbarch, ia64_init_extra_frame_info);
- set_gdbarch_frame_args_address (gdbarch, ia64_frame_args_address);
- set_gdbarch_frame_locals_address (gdbarch, ia64_frame_locals_address);
-
- /* We won't necessarily have a frame pointer and even if we do,
- it winds up being extraordinarly messy when attempting to find
- the frame chain. So for the purposes of creating frames (which
- is all read_fp() is used for), simply use the stack pointer value
- instead. */
- set_gdbarch_read_fp (gdbarch, generic_target_read_sp);
+ set_gdbarch_push_dummy_call (gdbarch, ia64_push_dummy_call);
+ set_gdbarch_frame_align (gdbarch, ia64_frame_align);
+ set_gdbarch_unwind_dummy_id (gdbarch, ia64_unwind_dummy_id);
+
+ set_gdbarch_unwind_pc (gdbarch, ia64_unwind_pc);
+ frame_unwind_append_sniffer (gdbarch, ia64_sigtramp_frame_sniffer);
+ frame_unwind_append_sniffer (gdbarch, ia64_frame_sniffer);
+ frame_base_set_default (gdbarch, &ia64_frame_base);
/* Settings that should be unnecessary. */
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
- set_gdbarch_read_sp (gdbarch, generic_target_read_sp);
- set_gdbarch_write_sp (gdbarch, generic_target_write_sp);
-
- set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
- set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
- set_gdbarch_call_dummy_start_offset (gdbarch, 0);
- set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
- set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
- set_gdbarch_fix_call_dummy (gdbarch, generic_fix_call_dummy);
-
set_gdbarch_decr_pc_after_break (gdbarch, 0);
set_gdbarch_function_start_offset (gdbarch, 0);
set_gdbarch_frame_args_skip (gdbarch, 0);
set_gdbarch_remote_translate_xfer_address (
gdbarch, ia64_remote_translate_xfer_address);
+ set_gdbarch_print_insn (gdbarch, ia64_print_insn);
+ set_gdbarch_convert_from_func_ptr_addr (gdbarch, ia64_convert_from_func_ptr_addr);
+
return gdbarch;
}
+extern initialize_file_ftype _initialize_ia64_tdep; /* -Wmissing-prototypes */
+
void
_initialize_ia64_tdep (void)
{
register_gdbarch_init (bfd_arch_ia64, ia64_gdbarch_init);
-
- tm_print_insn = print_insn_ia64;
- tm_print_insn_info.bytes_per_line = SLOT_MULTIPLIER;
}
projects / deliverable / binutils-gdb.git / blobdiff