/* Target-dependent code for GDB, the GNU debugger.
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001, 2002
+ 1998, 1999, 2000, 2001, 2002, 2003
Free Software Foundation, Inc.
This file is part of GDB.
#include "doublest.h"
#include "value.h"
#include "parser-defs.h"
+#include "osabi.h"
#include "libbfd.h" /* for bfd_default_set_arch_mach */
#include "coff/internal.h" /* for libcoff.h */
#include "solib-svr4.h"
#include "ppc-tdep.h"
+#include "gdb_assert.h"
+#include "dis-asm.h"
+
/* If the kernel has to deliver a signal, it pushes a sigcontext
structure on the stack and then calls the signal handler, passing
the address of the sigcontext in an argument register. Usually
int saved_gpr; /* smallest # of saved gpr */
int saved_fpr; /* smallest # of saved fpr */
int saved_vr; /* smallest # of saved vr */
+ int saved_ev; /* smallest # of saved ev */
int alloca_reg; /* alloca register number (frame ptr) */
char frameless; /* true if frameless functions. */
char nosavedpc; /* true if pc not saved. */
int gpr_offset; /* offset of saved gprs from prev sp */
int fpr_offset; /* offset of saved fprs from prev sp */
int vr_offset; /* offset of saved vrs from prev sp */
+ int ev_offset; /* offset of saved evs from prev sp */
int lr_offset; /* offset of saved lr */
int cr_offset; /* offset of saved cr */
int vrsave_offset; /* offset of saved vrsave register */
struct rs6000_framedata * fdatap);
static CORE_ADDR frame_initial_stack_address (struct frame_info *);
+/* Is REGNO an AltiVec register? Return 1 if so, 0 otherwise. */
+int
+altivec_register_p (int regno)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+ if (tdep->ppc_vr0_regnum < 0 || tdep->ppc_vrsave_regnum < 0)
+ return 0;
+ else
+ return (regno >= tdep->ppc_vr0_regnum && regno <= tdep->ppc_vrsave_regnum);
+}
+
+/* Use the architectures FP registers? */
+int
+ppc_floating_point_unit_p (struct gdbarch *gdbarch)
+{
+ const struct bfd_arch_info *info = gdbarch_bfd_arch_info (gdbarch);
+ if (info->arch == bfd_arch_powerpc)
+ return (info->mach != bfd_mach_ppc_e500);
+ if (info->arch == bfd_arch_rs6000)
+ return 1;
+ return 0;
+}
+
/* Read a LEN-byte address from debugged memory address MEMADDR. */
static CORE_ADDR
void
rs6000_init_extra_frame_info (int fromleaf, struct frame_info *fi)
{
- fi->extra_info = (struct frame_extra_info *)
- frame_obstack_alloc (sizeof (struct frame_extra_info));
- fi->extra_info->initial_sp = 0;
- if (fi->next != (CORE_ADDR) 0
- && fi->pc < TEXT_SEGMENT_BASE)
+ struct frame_extra_info *extra_info =
+ frame_extra_info_zalloc (fi, sizeof (struct frame_extra_info));
+ extra_info->initial_sp = 0;
+ if (get_next_frame (fi) != NULL
+ && get_frame_pc (fi) < TEXT_SEGMENT_BASE)
/* We're in get_prev_frame */
/* and this is a special signal frame. */
/* (fi->pc will be some low address in the kernel, */
/* to which the signal handler returns). */
- fi->signal_handler_caller = 1;
+ deprecated_set_frame_type (fi, SIGTRAMP_FRAME);
}
/* Put here the code to store, into a struct frame_saved_regs,
static CORE_ADDR
rs6000_frame_args_address (struct frame_info *fi)
{
- if (fi->extra_info->initial_sp != 0)
- return fi->extra_info->initial_sp;
+ struct frame_extra_info *extra_info = get_frame_extra_info (fi);
+ if (extra_info->initial_sp != 0)
+ return extra_info->initial_sp;
else
return frame_initial_stack_address (fi);
}
return read_register (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum);
}
+/* Get the ith function argument for the current function. */
+static CORE_ADDR
+rs6000_fetch_pointer_argument (struct frame_info *frame, int argi,
+ struct type *type)
+{
+ CORE_ADDR addr;
+ get_frame_register (frame, 3 + argi, &addr);
+ return addr;
+}
+
/* Calculate the destination of a branch/jump. Return -1 if not a branch. */
static CORE_ADDR
fi = get_current_frame ();
if (fi != NULL)
- dest = read_memory_addr (fi->frame + SIG_FRAME_PC_OFFSET,
+ dest = read_memory_addr (get_frame_base (fi) + SIG_FRAME_PC_OFFSET,
gdbarch_tdep (current_gdbarch)->wordsize);
}
}
/* Sequence of bytes for breakpoint instruction. */
-#define BIG_BREAKPOINT { 0x7d, 0x82, 0x10, 0x08 }
-#define LITTLE_BREAKPOINT { 0x08, 0x10, 0x82, 0x7d }
-
const static unsigned char *
rs6000_breakpoint_from_pc (CORE_ADDR *bp_addr, int *bp_size)
{
- static unsigned char big_breakpoint[] = BIG_BREAKPOINT;
- static unsigned char little_breakpoint[] = LITTLE_BREAKPOINT;
+ static unsigned char big_breakpoint[] = { 0x7d, 0x82, 0x10, 0x08 };
+ static unsigned char little_breakpoint[] = { 0x08, 0x10, 0x82, 0x7d };
*bp_size = 4;
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
return big_breakpoint;
- saved_gpr is the number of the first saved gpr.
- saved_fpr is the number of the first saved fpr.
- saved_vr is the number of the first saved vr.
+ - saved_ev is the number of the first saved ev.
- alloca_reg is the number of the register used for alloca() handling.
Otherwise -1.
- gpr_offset is the offset of the first saved gpr from the previous frame.
- fpr_offset is the offset of the first saved fpr from the previous frame.
- vr_offset is the offset of the first saved vr from the previous frame.
+ - ev_offset is the offset of the first saved ev from the previous frame.
- lr_offset is the offset of the saved lr
- cr_offset is the offset of the saved cr
- vrsave_offset is the offset of the saved vrsave register
int lr_reg = -1;
int cr_reg = -1;
int vr_reg = -1;
+ int ev_reg = -1;
+ long ev_offset = 0;
int vrsave_reg = -1;
int reg;
int framep = 0;
int minimal_toc_loaded = 0;
int prev_insn_was_prologue_insn = 1;
int num_skip_non_prologue_insns = 0;
-
+ const struct bfd_arch_info *arch_info = gdbarch_bfd_arch_info (current_gdbarch);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+
/* Attempt to find the end of the prologue when no limit is specified.
Note that refine_prologue_limit() has been written so that it may
be used to "refine" the limits of non-zero PC values too, but this
fdata->saved_gpr = -1;
fdata->saved_fpr = -1;
fdata->saved_vr = -1;
+ fdata->saved_ev = -1;
fdata->alloca_reg = -1;
fdata->frameless = 1;
fdata->nosavedpc = 1;
if ((op & 0xfc1fffff) == 0x7c0802a6)
{ /* mflr Rx */
- lr_reg = (op & 0x03e00000) | 0x90010000;
+ lr_reg = (op & 0x03e00000);
continue;
}
else if ((op & 0xfc1fffff) == 0x7c000026)
{ /* mfcr Rx */
- cr_reg = (op & 0x03e00000) | 0x90010000;
+ cr_reg = (op & 0x03e00000);
continue;
}
{
fdata->saved_gpr = reg;
if ((op & 0xfc1f0003) == 0xf8010000)
- op = (op >> 1) << 1;
+ op &= ~3UL;
fdata->gpr_offset = SIGNED_SHORT (op) + offset;
}
continue;
}
else if ((op & 0xffff0000) == 0x60000000)
{
- /* nop */
+ /* nop */
/* Allow nops in the prologue, but do not consider them to
be part of the prologue unless followed by other prologue
instructions. */
continue;
}
- else if (lr_reg != -1 && (op & 0xffff0000) == lr_reg)
- { /* st Rx,NUM(r1)
- where Rx == lr */
- fdata->lr_offset = SIGNED_SHORT (op) + offset;
+ else if (lr_reg != -1 &&
+ /* std Rx, NUM(r1) || stdu Rx, NUM(r1) */
+ (((op & 0xffff0000) == (lr_reg | 0xf8010000)) ||
+ /* stw Rx, NUM(r1) */
+ ((op & 0xffff0000) == (lr_reg | 0x90010000)) ||
+ /* stwu Rx, NUM(r1) */
+ ((op & 0xffff0000) == (lr_reg | 0x94010000))))
+ { /* where Rx == lr */
+ fdata->lr_offset = offset;
fdata->nosavedpc = 0;
lr_reg = 0;
+ if ((op & 0xfc000003) == 0xf8000000 || /* std */
+ (op & 0xfc000000) == 0x90000000) /* stw */
+ {
+ /* Does not update r1, so add displacement to lr_offset. */
+ fdata->lr_offset += SIGNED_SHORT (op);
+ }
continue;
}
- else if (cr_reg != -1 && (op & 0xffff0000) == cr_reg)
- { /* st Rx,NUM(r1)
- where Rx == cr */
- fdata->cr_offset = SIGNED_SHORT (op) + offset;
+ else if (cr_reg != -1 &&
+ /* std Rx, NUM(r1) || stdu Rx, NUM(r1) */
+ (((op & 0xffff0000) == (cr_reg | 0xf8010000)) ||
+ /* stw Rx, NUM(r1) */
+ ((op & 0xffff0000) == (cr_reg | 0x90010000)) ||
+ /* stwu Rx, NUM(r1) */
+ ((op & 0xffff0000) == (cr_reg | 0x94010000))))
+ { /* where Rx == cr */
+ fdata->cr_offset = offset;
cr_reg = 0;
+ if ((op & 0xfc000003) == 0xf8000000 ||
+ (op & 0xfc000000) == 0x90000000)
+ {
+ /* Does not update r1, so add displacement to cr_offset. */
+ fdata->cr_offset += SIGNED_SHORT (op);
+ }
continue;
}
this branch */
continue;
- /* update stack pointer */
}
- else if ((op & 0xffff0000) == 0x94210000 || /* stu r1,NUM(r1) */
- (op & 0xffff0003) == 0xf8210001) /* stdu r1,NUM(r1) */
- {
+ /* update stack pointer */
+ else if ((op & 0xfc1f0000) == 0x94010000)
+ { /* stu rX,NUM(r1) || stwu rX,NUM(r1) */
fdata->frameless = 0;
- if ((op & 0xffff0003) == 0xf8210001)
- op = (op >> 1) << 1;
fdata->offset = SIGNED_SHORT (op);
offset = fdata->offset;
continue;
-
}
- else if (op == 0x7c21016e)
- { /* stwux 1,1,0 */
+ else if ((op & 0xfc1f016a) == 0x7c01016e)
+ { /* stwux rX,r1,rY */
+ /* no way to figure out what r1 is going to be */
fdata->frameless = 0;
offset = fdata->offset;
continue;
-
- /* Load up minimal toc pointer */
}
- else if ((op >> 22) == 0x20f
+ else if ((op & 0xfc1f0003) == 0xf8010001)
+ { /* stdu rX,NUM(r1) */
+ fdata->frameless = 0;
+ fdata->offset = SIGNED_SHORT (op & ~3UL);
+ offset = fdata->offset;
+ continue;
+ }
+ else if ((op & 0xfc1f016a) == 0x7c01016a)
+ { /* stdux rX,r1,rY */
+ /* no way to figure out what r1 is going to be */
+ fdata->frameless = 0;
+ offset = fdata->offset;
+ continue;
+ }
+ /* Load up minimal toc pointer */
+ else if (((op >> 22) == 0x20f || /* l r31,... or l r30,... */
+ (op >> 22) == 0x3af) /* ld r31,... or ld r30,... */
&& !minimal_toc_loaded)
- { /* l r31,... or l r30,... */
+ {
minimal_toc_loaded = 1;
continue;
else if ((op & 0xfc0007fe) == 0x7c000378 && /* mr(.) Rx,Ry */
(((op >> 21) & 31) >= 3) && /* R3 >= Ry >= R10 */
(((op >> 21) & 31) <= 10) &&
- (((op >> 16) & 31) >= fdata->saved_gpr)) /* Rx: local var reg */
+ ((long) ((op >> 16) & 31) >= fdata->saved_gpr)) /* Rx: local var reg */
{
continue;
{ /* mr r31, r1 */
fdata->frameless = 0;
framep = 1;
- fdata->alloca_reg = 31;
+ fdata->alloca_reg = (tdep->ppc_gp0_regnum + 31);
continue;
/* Another way to set up the frame pointer. */
{ /* addi rX, r1, 0x0 */
fdata->frameless = 0;
framep = 1;
- fdata->alloca_reg = (op & ~0x38010000) >> 21;
+ fdata->alloca_reg = (tdep->ppc_gp0_regnum
+ + ((op & ~0x38010000) >> 21));
continue;
}
/* AltiVec related instructions. */
in a pair of insns to save the vector registers on the
stack. */
/* 001110 00000 00000 iiii iiii iiii iiii */
- else if ((op & 0xffff0000) == 0x38000000) /* li r0, SIMM */
+ /* 001110 01110 00000 iiii iiii iiii iiii */
+ else if ((op & 0xffff0000) == 0x38000000 /* li r0, SIMM */
+ || (op & 0xffff0000) == 0x39c00000) /* li r14, SIMM */
{
li_found_pc = pc;
vr_saved_offset = SIGNED_SHORT (op);
}
}
/* End AltiVec related instructions. */
+
+ /* Start BookE related instructions. */
+ /* Store gen register S at (r31+uimm).
+ Any register less than r13 is volatile, so we don't care. */
+ /* 000100 sssss 11111 iiiii 01100100001 */
+ else if (arch_info->mach == bfd_mach_ppc_e500
+ && (op & 0xfc1f07ff) == 0x101f0321) /* evstdd Rs,uimm(R31) */
+ {
+ if ((op & 0x03e00000) >= 0x01a00000) /* Rs >= r13 */
+ {
+ unsigned int imm;
+ ev_reg = GET_SRC_REG (op);
+ imm = (op >> 11) & 0x1f;
+ ev_offset = imm * 8;
+ /* If this is the first vector reg to be saved, or if
+ it has a lower number than others previously seen,
+ reupdate the frame info. */
+ if (fdata->saved_ev == -1 || fdata->saved_ev > ev_reg)
+ {
+ fdata->saved_ev = ev_reg;
+ fdata->ev_offset = ev_offset + offset;
+ }
+ }
+ continue;
+ }
+ /* Store gen register rS at (r1+rB). */
+ /* 000100 sssss 00001 bbbbb 01100100000 */
+ else if (arch_info->mach == bfd_mach_ppc_e500
+ && (op & 0xffe007ff) == 0x13e00320) /* evstddx RS,R1,Rb */
+ {
+ if (pc == (li_found_pc + 4))
+ {
+ ev_reg = GET_SRC_REG (op);
+ /* If this is the first vector reg to be saved, or if
+ it has a lower number than others previously seen,
+ reupdate the frame info. */
+ /* We know the contents of rB from the previous instruction. */
+ if (fdata->saved_ev == -1 || fdata->saved_ev > ev_reg)
+ {
+ fdata->saved_ev = ev_reg;
+ fdata->ev_offset = vr_saved_offset + offset;
+ }
+ vr_saved_offset = -1;
+ ev_reg = -1;
+ li_found_pc = 0;
+ }
+ continue;
+ }
+ /* Store gen register r31 at (rA+uimm). */
+ /* 000100 11111 aaaaa iiiii 01100100001 */
+ else if (arch_info->mach == bfd_mach_ppc_e500
+ && (op & 0xffe007ff) == 0x13e00321) /* evstdd R31,Ra,UIMM */
+ {
+ /* Wwe know that the source register is 31 already, but
+ it can't hurt to compute it. */
+ ev_reg = GET_SRC_REG (op);
+ ev_offset = ((op >> 11) & 0x1f) * 8;
+ /* If this is the first vector reg to be saved, or if
+ it has a lower number than others previously seen,
+ reupdate the frame info. */
+ if (fdata->saved_ev == -1 || fdata->saved_ev > ev_reg)
+ {
+ fdata->saved_ev = ev_reg;
+ fdata->ev_offset = ev_offset + offset;
+ }
+
+ continue;
+ }
+ /* Store gen register S at (r31+r0).
+ Store param on stack when offset from SP bigger than 4 bytes. */
+ /* 000100 sssss 11111 00000 01100100000 */
+ else if (arch_info->mach == bfd_mach_ppc_e500
+ && (op & 0xfc1fffff) == 0x101f0320) /* evstddx Rs,R31,R0 */
+ {
+ if (pc == (li_found_pc + 4))
+ {
+ if ((op & 0x03e00000) >= 0x01a00000)
+ {
+ ev_reg = GET_SRC_REG (op);
+ /* If this is the first vector reg to be saved, or if
+ it has a lower number than others previously seen,
+ reupdate the frame info. */
+ /* We know the contents of r0 from the previous
+ instruction. */
+ if (fdata->saved_ev == -1 || fdata->saved_ev > ev_reg)
+ {
+ fdata->saved_ev = ev_reg;
+ fdata->ev_offset = vr_saved_offset + offset;
+ }
+ ev_reg = -1;
+ }
+ vr_saved_offset = -1;
+ li_found_pc = 0;
+ continue;
+ }
+ }
+ /* End BookE related instructions. */
+
else
{
/* Not a recognized prologue instruction.
int ii, wordsize;
pc = read_pc ();
- sp = FRAME_FP (frame);
+ sp = get_frame_base (frame);
- if (PC_IN_CALL_DUMMY (frame->pc, 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 ();
}
/* Make sure that all registers are valid. */
- read_register_bytes (0, NULL, REGISTER_BYTES);
+ deprecated_read_register_bytes (0, NULL, DEPRECATED_REGISTER_BYTES);
/* Figure out previous %pc value. If the function is frameless, it is
still in the link register, otherwise walk the frames and retrieve the
saved %pc value in the previous frame. */
- addr = get_pc_function_start (frame->pc);
- (void) skip_prologue (addr, frame->pc, &fdata);
+ addr = get_frame_func (frame);
+ (void) skip_prologue (addr, get_frame_pc (frame), &fdata);
wordsize = gdbarch_tdep (current_gdbarch)->wordsize;
if (fdata.frameless)
addr = prev_sp + fdata.gpr_offset;
for (ii = fdata.saved_gpr; ii <= 31; ++ii)
{
- read_memory (addr, ®isters[REGISTER_BYTE (ii)], wordsize);
+ read_memory (addr, &deprecated_registers[DEPRECATED_REGISTER_BYTE (ii)],
+ wordsize);
addr += wordsize;
}
}
addr = prev_sp + fdata.fpr_offset;
for (ii = fdata.saved_fpr; ii <= 31; ++ii)
{
- read_memory (addr, ®isters[REGISTER_BYTE (ii + FP0_REGNUM)], 8);
+ read_memory (addr, &deprecated_registers[DEPRECATED_REGISTER_BYTE (ii + FP0_REGNUM)], 8);
addr += 8;
}
}
flush_cached_frames ();
}
-/* Fixup the call sequence of a dummy function, with the real function
- address. Its arguments will be passed by gdb. */
-
-static void
-rs6000_fix_call_dummy (char *dummyname, CORE_ADDR pc, CORE_ADDR fun,
- int nargs, struct value **args, struct type *type,
- int gcc_p)
+/* All the ABI's require 16 byte alignment. */
+static CORE_ADDR
+rs6000_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
{
- int ii;
- CORE_ADDR target_addr;
-
- if (rs6000_find_toc_address_hook != NULL)
- {
- CORE_ADDR tocvalue = (*rs6000_find_toc_address_hook) (fun);
- write_register (gdbarch_tdep (current_gdbarch)->ppc_toc_regnum,
- tocvalue);
- }
+ return (addr & -16);
}
/* Pass the arguments in either registers, or in the stack. In RS/6000,
starting from r4. */
static CORE_ADDR
-rs6000_push_arguments (int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+rs6000_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)
{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
int ii;
int len = 0;
int argno; /* current argument number */
CORE_ADDR saved_sp;
/* The first eight words of ther arguments are passed in registers.
- Copy them appropriately.
-
- If the function is returning a `struct', then the first word (which
- will be passed in r3) is used for struct return address. In that
- case we should advance one word and start from r4 register to copy
- parameters. */
-
- ii = struct_return ? 1 : 0;
+ Copy them appropriately. */
+ ii = 0;
+
+ /* If the function is returning a `struct', then the first word
+ (which will be passed in r3) is used for struct return address.
+ In that case we should advance one word and start from r4
+ register to copy parameters. */
+ if (struct_return)
+ {
+ regcache_raw_write_unsigned (regcache, tdep->ppc_gp0_regnum + 3,
+ struct_addr);
+ ii++;
+ }
/*
effectively indirect call... gcc does...
for (argno = 0, argbytes = 0; argno < nargs && ii < 8; ++ii)
{
- int reg_size = REGISTER_RAW_SIZE (ii + 3);
+ int reg_size = DEPRECATED_REGISTER_RAW_SIZE (ii + 3);
arg = args[argno];
type = check_typedef (VALUE_TYPE (arg));
printf_unfiltered (
"Fatal Error: a floating point parameter #%d with a size > 8 is found!\n", argno);
- memcpy (®isters[REGISTER_BYTE (FP0_REGNUM + 1 + f_argno)],
+ memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM + 1 + f_argno)],
VALUE_CONTENTS (arg),
len);
++f_argno;
/* Argument takes more than one register. */
while (argbytes < len)
{
- memset (®isters[REGISTER_BYTE (ii + 3)], 0, reg_size);
- memcpy (®isters[REGISTER_BYTE (ii + 3)],
+ memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (ii + 3)], 0,
+ reg_size);
+ memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (ii + 3)],
((char *) VALUE_CONTENTS (arg)) + argbytes,
(len - argbytes) > reg_size
? reg_size : len - argbytes);
{
/* Argument can fit in one register. No problem. */
int adj = TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? reg_size - len : 0;
- memset (®isters[REGISTER_BYTE (ii + 3)], 0, reg_size);
- memcpy ((char *)®isters[REGISTER_BYTE (ii + 3)] + adj,
+ memset (&deprecated_registers[DEPRECATED_REGISTER_BYTE (ii + 3)], 0, reg_size);
+ memcpy ((char *)&deprecated_registers[DEPRECATED_REGISTER_BYTE (ii + 3)] + adj,
VALUE_CONTENTS (arg), len);
}
++argno;
space = (space + 15) & -16;
sp -= space;
- /* This is another instance we need to be concerned about
- securing our stack space. If we write anything underneath %sp
- (r1), we might conflict with the kernel who thinks he is free
- to use this area. So, update %sp first before doing anything
- else. */
-
- write_register (SP_REGNUM, sp);
-
/* If the last argument copied into the registers didn't fit there
completely, push the rest of it into stack. */
printf_unfiltered (
"Fatal Error: a floating point parameter #%d with a size > 8 is found!\n", argno);
- memcpy (®isters[REGISTER_BYTE (FP0_REGNUM + 1 + f_argno)],
+ memcpy (&deprecated_registers[DEPRECATED_REGISTER_BYTE (FP0_REGNUM + 1 + f_argno)],
VALUE_CONTENTS (arg),
len);
++f_argno;
ii += ((len + 3) & -4) / 4;
}
}
- else
- /* Secure stack areas first, before doing anything else. */
- write_register (SP_REGNUM, sp);
/* set back chain properly */
- store_address (tmp_buffer, 4, saved_sp);
+ store_unsigned_integer (tmp_buffer, 4, saved_sp);
write_memory (sp, tmp_buffer, 4);
+ /* Set the stack pointer. According to the ABI, the SP is meant to
+ be set _before_ the corresponding stack space is used. No need
+ for that here though - the target has been completely stopped -
+ it isn't possible for an exception handler to stomp on the stack. */
+ regcache_raw_write_signed (regcache, SP_REGNUM, sp);
+
+ /* Point the inferior function call's return address at the dummy's
+ breakpoint. */
+ regcache_raw_write_signed (regcache, tdep->ppc_lr_regnum, bp_addr);
+
+ /* Set the TOC register, get the value from the objfile reader
+ which, in turn, gets it from the VMAP table. */
+ if (rs6000_find_toc_address_hook != NULL)
+ {
+ CORE_ADDR tocvalue = (*rs6000_find_toc_address_hook) (func_addr);
+ regcache_raw_write_signed (regcache, tdep->ppc_toc_regnum, tocvalue);
+ }
+
target_store_registers (-1);
return sp;
}
-/* Function: ppc_push_return_address (pc, sp)
- Set up the return address for the inferior function call. */
+/* PowerOpen always puts structures in memory. Vectors, which were
+ added later, do get returned in a register though. */
-static CORE_ADDR
-ppc_push_return_address (CORE_ADDR pc, CORE_ADDR sp)
-{
- write_register (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum,
- CALL_DUMMY_ADDRESS ());
- return sp;
+static int
+rs6000_use_struct_convention (int gcc_p, struct type *value_type)
+{
+ if ((TYPE_LENGTH (value_type) == 16 || TYPE_LENGTH (value_type) == 8)
+ && TYPE_VECTOR (value_type))
+ return 0;
+ return 1;
}
-/* Extract a function return value of type TYPE from raw register array
- REGBUF, and copy that return value into VALBUF in virtual format. */
-
static void
rs6000_extract_return_value (struct type *valtype, char *regbuf, char *valbuf)
{
if (TYPE_LENGTH (valtype) > 4) /* this is a double */
memcpy (valbuf,
- ®buf[REGISTER_BYTE (FP0_REGNUM + 1)],
+ ®buf[DEPRECATED_REGISTER_BYTE (FP0_REGNUM + 1)],
TYPE_LENGTH (valtype));
else
{ /* float */
- memcpy (&dd, ®buf[REGISTER_BYTE (FP0_REGNUM + 1)], 8);
+ memcpy (&dd, ®buf[DEPRECATED_REGISTER_BYTE (FP0_REGNUM + 1)], 8);
ff = (float) dd;
memcpy (valbuf, &ff, sizeof (float));
}
&& TYPE_LENGTH (valtype) == 16
&& TYPE_VECTOR (valtype))
{
- memcpy (valbuf, regbuf + REGISTER_BYTE (tdep->ppc_vr0_regnum + 2),
+ memcpy (valbuf, regbuf + DEPRECATED_REGISTER_BYTE (tdep->ppc_vr0_regnum + 2),
TYPE_LENGTH (valtype));
}
else
{
/* return value is copied starting from r3. */
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG
- && TYPE_LENGTH (valtype) < REGISTER_RAW_SIZE (3))
- offset = REGISTER_RAW_SIZE (3) - TYPE_LENGTH (valtype);
+ && TYPE_LENGTH (valtype) < DEPRECATED_REGISTER_RAW_SIZE (3))
+ offset = DEPRECATED_REGISTER_RAW_SIZE (3) - TYPE_LENGTH (valtype);
memcpy (valbuf,
- regbuf + REGISTER_BYTE (3) + offset,
+ regbuf + DEPRECATED_REGISTER_BYTE (3) + offset,
TYPE_LENGTH (valtype));
}
}
-/* Keep structure return address in this variable.
- FIXME: This is a horrid kludge which should not be allowed to continue
- living. This only allows a single nested call to a structure-returning
- function. Come on, guys! -- gnu@cygnus.com, Aug 92 */
-
-static CORE_ADDR rs6000_struct_return_address;
-
/* Return whether handle_inferior_event() should proceed through code
starting at PC in function NAME when stepping.
CORE_ADDR
rs6000_skip_trampoline_code (CORE_ADDR pc)
{
- register unsigned int ii, op;
+ unsigned int ii, op;
int rel;
CORE_ADDR solib_target_pc;
struct minimal_symbol *msymbol;
/* Check for bigtoc fixup code. */
msymbol = lookup_minimal_symbol_by_pc (pc);
- if (msymbol && rs6000_in_solib_return_trampoline (pc, SYMBOL_NAME (msymbol)))
+ if (msymbol && rs6000_in_solib_return_trampoline (pc, DEPRECATED_SYMBOL_NAME (msymbol)))
{
/* Double-check that the third instruction from PC is relative "b". */
op = read_memory_integer (pc + 8, 4);
/* Don't even think about framelessness except on the innermost frame
or if the function was interrupted by a signal. */
- if (fi->next != NULL && !fi->next->signal_handler_caller)
+ if (get_next_frame (fi) != NULL
+ && !(get_frame_type (get_next_frame (fi)) == SIGTRAMP_FRAME))
return 0;
- func_start = get_pc_function_start (fi->pc);
+ func_start = get_frame_func (fi);
/* If we failed to find the start of the function, it is a mistake
to inspect the instructions. */
function pointer, normally causing an immediate core dump of the
inferior. Mark function as frameless, as the inferior has no chance
of setting up a stack frame. */
- if (fi->pc == 0)
+ if (get_frame_pc (fi) == 0)
return 1;
else
return 0;
}
- (void) skip_prologue (func_start, fi->pc, &fdata);
+ (void) skip_prologue (func_start, get_frame_pc (fi), &fdata);
return fdata.frameless;
}
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
int wordsize = tdep->wordsize;
- if (fi->signal_handler_caller)
- return read_memory_addr (fi->frame + SIG_FRAME_PC_OFFSET, wordsize);
+ if ((get_frame_type (fi) == SIGTRAMP_FRAME))
+ return read_memory_addr (get_frame_base (fi) + SIG_FRAME_PC_OFFSET,
+ wordsize);
- if (PC_IN_CALL_DUMMY (fi->pc, fi->frame, fi->frame))
- return generic_read_register_dummy (fi->pc, fi->frame, PC_REGNUM);
+ if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (fi),
+ get_frame_base (fi),
+ get_frame_base (fi)))
+ return deprecated_read_register_dummy (get_frame_pc (fi),
+ get_frame_base (fi), PC_REGNUM);
- func_start = get_pc_function_start (fi->pc);
+ func_start = get_frame_func (fi);
/* If we failed to find the start of the function, it is a mistake
to inspect the instructions. */
if (!func_start)
return 0;
- (void) skip_prologue (func_start, fi->pc, &fdata);
+ (void) skip_prologue (func_start, get_frame_pc (fi), &fdata);
- if (fdata.lr_offset == 0 && fi->next != NULL)
+ if (fdata.lr_offset == 0 && get_next_frame (fi) != NULL)
{
- if (fi->next->signal_handler_caller)
- return read_memory_addr (fi->next->frame + SIG_FRAME_LR_OFFSET,
+ if ((get_frame_type (get_next_frame (fi)) == SIGTRAMP_FRAME))
+ return read_memory_addr ((get_frame_base (get_next_frame (fi))
+ + SIG_FRAME_LR_OFFSET),
wordsize);
+ else if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (get_next_frame (fi)), 0, 0))
+ /* The link register wasn't saved by this frame and the next
+ (inner, newer) frame is a dummy. Get the link register
+ value by unwinding it from that [dummy] frame. */
+ {
+ ULONGEST lr;
+ frame_unwind_unsigned_register (get_next_frame (fi),
+ tdep->ppc_lr_regnum, &lr);
+ return lr;
+ }
else
- return read_memory_addr (FRAME_CHAIN (fi) + tdep->lr_frame_offset,
+ return read_memory_addr (DEPRECATED_FRAME_CHAIN (fi)
+ + tdep->lr_frame_offset,
wordsize);
}
if (fdata.lr_offset == 0)
return read_register (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum);
- return read_memory_addr (FRAME_CHAIN (fi) + fdata.lr_offset, wordsize);
+ return read_memory_addr (DEPRECATED_FRAME_CHAIN (fi) + fdata.lr_offset,
+ wordsize);
}
/* If saved registers of frame FI are not known yet, read and cache them.
struct gdbarch_tdep * tdep = gdbarch_tdep (current_gdbarch);
int wordsize = tdep->wordsize;
- if (fi->saved_regs)
+ if (deprecated_get_frame_saved_regs (fi))
return;
if (fdatap == NULL)
{
fdatap = &work_fdata;
- (void) skip_prologue (get_pc_function_start (fi->pc), fi->pc, fdatap);
+ (void) skip_prologue (get_frame_func (fi), get_frame_pc (fi), fdatap);
}
frame_saved_regs_zalloc (fi);
if (fdatap->saved_fpr == 0
&& fdatap->saved_gpr == 0
&& fdatap->saved_vr == 0
+ && fdatap->saved_ev == 0
&& fdatap->lr_offset == 0
&& fdatap->cr_offset == 0
- && fdatap->vr_offset == 0)
+ && fdatap->vr_offset == 0
+ && fdatap->ev_offset == 0)
frame_addr = 0;
else
/* NOTE: cagney/2002-04-14: The ->frame points to the inner-most
->frame pointed to the outer-most address of the frame. In the
mean time, the address of the prev frame is used as the base
address of this frame. */
- frame_addr = FRAME_CHAIN (fi);
+ frame_addr = DEPRECATED_FRAME_CHAIN (fi);
/* if != -1, fdatap->saved_fpr is the smallest number of saved_fpr.
All fpr's from saved_fpr to fp31 are saved. */
CORE_ADDR fpr_addr = frame_addr + fdatap->fpr_offset;
for (i = fdatap->saved_fpr; i < 32; i++)
{
- fi->saved_regs[FP0_REGNUM + i] = fpr_addr;
+ deprecated_get_frame_saved_regs (fi)[FP0_REGNUM + i] = fpr_addr;
fpr_addr += 8;
}
}
CORE_ADDR gpr_addr = frame_addr + fdatap->gpr_offset;
for (i = fdatap->saved_gpr; i < 32; i++)
{
- fi->saved_regs[i] = gpr_addr;
+ deprecated_get_frame_saved_regs (fi)[tdep->ppc_gp0_regnum + i] = gpr_addr;
gpr_addr += wordsize;
}
}
CORE_ADDR vr_addr = frame_addr + fdatap->vr_offset;
for (i = fdatap->saved_vr; i < 32; i++)
{
- fi->saved_regs[tdep->ppc_vr0_regnum + i] = vr_addr;
- vr_addr += REGISTER_RAW_SIZE (tdep->ppc_vr0_regnum);
+ deprecated_get_frame_saved_regs (fi)[tdep->ppc_vr0_regnum + i] = vr_addr;
+ vr_addr += DEPRECATED_REGISTER_RAW_SIZE (tdep->ppc_vr0_regnum);
}
}
}
+ /* if != -1, fdatap->saved_ev is the smallest number of saved_ev.
+ All vr's from saved_ev to ev31 are saved. ????? */
+ if (tdep->ppc_ev0_regnum != -1 && tdep->ppc_ev31_regnum != -1)
+ {
+ if (fdatap->saved_ev >= 0)
+ {
+ int i;
+ CORE_ADDR ev_addr = frame_addr + fdatap->ev_offset;
+ for (i = fdatap->saved_ev; i < 32; i++)
+ {
+ deprecated_get_frame_saved_regs (fi)[tdep->ppc_ev0_regnum + i] = ev_addr;
+ deprecated_get_frame_saved_regs (fi)[tdep->ppc_gp0_regnum + i] = ev_addr + 4;
+ ev_addr += DEPRECATED_REGISTER_RAW_SIZE (tdep->ppc_ev0_regnum);
+ }
+ }
+ }
+
/* If != 0, fdatap->cr_offset is the offset from the frame that holds
the CR. */
if (fdatap->cr_offset != 0)
- fi->saved_regs[tdep->ppc_cr_regnum] = frame_addr + fdatap->cr_offset;
+ deprecated_get_frame_saved_regs (fi)[tdep->ppc_cr_regnum] = frame_addr + fdatap->cr_offset;
/* If != 0, fdatap->lr_offset is the offset from the frame that holds
the LR. */
if (fdatap->lr_offset != 0)
- fi->saved_regs[tdep->ppc_lr_regnum] = frame_addr + fdatap->lr_offset;
+ deprecated_get_frame_saved_regs (fi)[tdep->ppc_lr_regnum] = frame_addr + fdatap->lr_offset;
/* If != 0, fdatap->vrsave_offset is the offset from the frame that holds
the VRSAVE. */
if (fdatap->vrsave_offset != 0)
- fi->saved_regs[tdep->ppc_vrsave_regnum] = frame_addr + fdatap->vrsave_offset;
+ deprecated_get_frame_saved_regs (fi)[tdep->ppc_vrsave_regnum] = frame_addr + fdatap->vrsave_offset;
}
/* Return the address of a frame. This is the inital %sp value when the frame
/* If the initial stack pointer (frame address) of this frame is known,
just return it. */
- if (fi->extra_info->initial_sp)
- return fi->extra_info->initial_sp;
+ if (get_frame_extra_info (fi)->initial_sp)
+ return get_frame_extra_info (fi)->initial_sp;
/* Find out if this function is using an alloca register. */
- (void) skip_prologue (get_pc_function_start (fi->pc), fi->pc, &fdata);
+ (void) skip_prologue (get_frame_func (fi), get_frame_pc (fi), &fdata);
/* If saved registers of this frame are not known yet, read and
cache them. */
- if (!fi->saved_regs)
+ if (!deprecated_get_frame_saved_regs (fi))
frame_get_saved_regs (fi, &fdata);
/* If no alloca register used, then fi->frame is the value of the %sp for
if (fdata.alloca_reg < 0)
{
- fi->extra_info->initial_sp = fi->frame;
- return fi->extra_info->initial_sp;
+ get_frame_extra_info (fi)->initial_sp = get_frame_base (fi);
+ return get_frame_extra_info (fi)->initial_sp;
}
/* There is an alloca register, use its value, in the current frame,
as the initial stack pointer. */
{
- char *tmpbuf = alloca (MAX_REGISTER_RAW_SIZE);
+ char tmpbuf[MAX_REGISTER_SIZE];
if (frame_register_read (fi, fdata.alloca_reg, tmpbuf))
{
- fi->extra_info->initial_sp
+ get_frame_extra_info (fi)->initial_sp
= extract_unsigned_integer (tmpbuf,
- REGISTER_RAW_SIZE (fdata.alloca_reg));
+ DEPRECATED_REGISTER_RAW_SIZE (fdata.alloca_reg));
}
else
/* NOTE: cagney/2002-04-17: At present the only time
frame_register_read will fail is when the register isn't
available. If that does happen, use the frame. */
- fi->extra_info->initial_sp = fi->frame;
+ get_frame_extra_info (fi)->initial_sp = get_frame_base (fi);
}
- return fi->extra_info->initial_sp;
+ return get_frame_extra_info (fi)->initial_sp;
}
/* Describe the pointer in each stack frame to the previous stack frame
(its caller). */
-/* FRAME_CHAIN takes a frame's nominal address
- and produces the frame's chain-pointer. */
+/* DEPRECATED_FRAME_CHAIN takes a frame's nominal address and produces
+ the frame's chain-pointer. */
/* In the case of the RS/6000, the frame's nominal address
is the address of a 4-byte word containing the calling frame's address. */
CORE_ADDR fp, fpp, lr;
int wordsize = gdbarch_tdep (current_gdbarch)->wordsize;
- if (PC_IN_CALL_DUMMY (thisframe->pc, thisframe->frame, thisframe->frame))
- return thisframe->frame; /* dummy frame same as caller's frame */
+ if (DEPRECATED_PC_IN_CALL_DUMMY (get_frame_pc (thisframe),
+ get_frame_base (thisframe),
+ get_frame_base (thisframe)))
+ /* A dummy frame always correctly chains back to the previous
+ frame. */
+ return read_memory_addr (get_frame_base (thisframe), wordsize);
- if (inside_entry_file (thisframe->pc) ||
- thisframe->pc == entry_point_address ())
+ if (deprecated_inside_entry_file (get_frame_pc (thisframe))
+ || get_frame_pc (thisframe) == entry_point_address ())
return 0;
- if (thisframe->signal_handler_caller)
- fp = read_memory_addr (thisframe->frame + SIG_FRAME_FP_OFFSET,
- wordsize);
- else if (thisframe->next != NULL
- && thisframe->next->signal_handler_caller
+ if ((get_frame_type (thisframe) == SIGTRAMP_FRAME))
+ fp = read_memory_addr (get_frame_base (thisframe) + SIG_FRAME_FP_OFFSET,
+ wordsize);
+ else if (get_next_frame (thisframe) != NULL
+ && (get_frame_type (get_next_frame (thisframe)) == SIGTRAMP_FRAME)
&& FRAMELESS_FUNCTION_INVOCATION (thisframe))
/* A frameless function interrupted by a signal did not change the
frame pointer. */
- fp = FRAME_FP (thisframe);
+ fp = get_frame_base (thisframe);
else
- fp = read_memory_addr ((thisframe)->frame, wordsize);
-
- lr = read_register (gdbarch_tdep (current_gdbarch)->ppc_lr_regnum);
- if (lr == entry_point_address ())
- if (fp != 0 && (fpp = read_memory_addr (fp, wordsize)) != 0)
- if (PC_IN_CALL_DUMMY (lr, fpp, fpp))
- return fpp;
-
+ fp = read_memory_addr (get_frame_base (thisframe), wordsize);
return fp;
}
int size = regsize (reg, tdep->wordsize);
switch (size)
{
+ case 0:
+ return builtin_type_int0;
+ case 4:
+ return builtin_type_int32;
case 8:
if (tdep->ppc_ev0_regnum <= n && n <= tdep->ppc_ev31_regnum)
return builtin_type_vec64;
return builtin_type_vec128;
break;
default:
- return builtin_type_int32;
- break;
+ internal_error (__FILE__, __LINE__, "Register %d size %d unknown",
+ n, size);
}
}
}
-/* For the PowerPC, it appears that the debug info marks float parameters as
- floats regardless of whether the function is prototyped, but the actual
- values are always passed in as doubles. Tell gdb to always assume that
- floats are passed as doubles and then converted in the callee. */
-
-static int
-rs6000_coerce_float_to_double (struct type *formal, struct type *actual)
-{
- return 1;
-}
-
/* Return whether register N requires conversion when moving from raw format
to virtual format.
rs6000_register_convert_to_virtual (int n, struct type *type,
char *from, char *to)
{
- if (TYPE_LENGTH (type) != REGISTER_RAW_SIZE (n))
+ if (TYPE_LENGTH (type) != DEPRECATED_REGISTER_RAW_SIZE (n))
{
- double val = extract_floating (from, REGISTER_RAW_SIZE (n));
- store_floating (to, TYPE_LENGTH (type), val);
+ double val = deprecated_extract_floating (from, DEPRECATED_REGISTER_RAW_SIZE (n));
+ deprecated_store_floating (to, TYPE_LENGTH (type), val);
}
else
- memcpy (to, from, REGISTER_RAW_SIZE (n));
+ memcpy (to, from, DEPRECATED_REGISTER_RAW_SIZE (n));
}
/* Convert data from virtual format with type TYPE in buffer FROM
static void
rs6000_register_convert_to_raw (struct type *type, int n,
- char *from, char *to)
+ const char *from, char *to)
{
- if (TYPE_LENGTH (type) != REGISTER_RAW_SIZE (n))
+ if (TYPE_LENGTH (type) != DEPRECATED_REGISTER_RAW_SIZE (n))
{
- double val = extract_floating (from, TYPE_LENGTH (type));
- store_floating (to, REGISTER_RAW_SIZE (n), val);
+ double val = deprecated_extract_floating (from, TYPE_LENGTH (type));
+ deprecated_store_floating (to, DEPRECATED_REGISTER_RAW_SIZE (n), val);
}
else
- memcpy (to, from, REGISTER_RAW_SIZE (n));
+ memcpy (to, from, DEPRECATED_REGISTER_RAW_SIZE (n));
}
static void
{
int base_regnum;
int offset = 0;
- char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
+ char temp_buffer[MAX_REGISTER_SIZE];
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
if (reg_nr >= tdep->ppc_gp0_regnum
{
int base_regnum;
int offset = 0;
- char *temp_buffer = (char*) alloca (MAX_REGISTER_RAW_SIZE);
+ char temp_buffer[MAX_REGISTER_SIZE];
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
if (reg_nr >= tdep->ppc_gp0_regnum
return regnum;
}
-/* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function.
-
- In RS/6000, struct return addresses are passed as an extra parameter in r3.
- In function return, callee is not responsible of returning this address
- back. Since gdb needs to find it, we will store in a designated variable
- `rs6000_struct_return_address'. */
-
-static void
-rs6000_store_struct_return (CORE_ADDR addr, CORE_ADDR sp)
-{
- write_register (3, addr);
- rs6000_struct_return_address = addr;
-}
-
-/* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. */
-
static void
rs6000_store_return_value (struct type *type, char *valbuf)
{
Say a double_double_double type could be returned in
FPR1/FPR2/FPR3 triple. */
- write_register_bytes (REGISTER_BYTE (FP0_REGNUM + 1), valbuf,
- TYPE_LENGTH (type));
+ deprecated_write_register_bytes (DEPRECATED_REGISTER_BYTE (FP0_REGNUM + 1), valbuf,
+ TYPE_LENGTH (type));
else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
{
if (TYPE_LENGTH (type) == 16
&& TYPE_VECTOR (type))
- write_register_bytes (REGISTER_BYTE (tdep->ppc_vr0_regnum + 2),
- valbuf, TYPE_LENGTH (type));
+ deprecated_write_register_bytes (DEPRECATED_REGISTER_BYTE (tdep->ppc_vr0_regnum + 2),
+ valbuf, TYPE_LENGTH (type));
}
else
/* Everything else is returned in GPR3 and up. */
- write_register_bytes (REGISTER_BYTE (gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum + 3),
- valbuf, TYPE_LENGTH (type));
+ deprecated_write_register_bytes (DEPRECATED_REGISTER_BYTE (gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum + 3),
+ valbuf, TYPE_LENGTH (type));
}
/* Extract from an array REGBUF containing the (raw) register state
as a CORE_ADDR (or an expression that can be used as one). */
static CORE_ADDR
-rs6000_extract_struct_value_address (char *regbuf)
-{
- return rs6000_struct_return_address;
+rs6000_extract_struct_value_address (struct regcache *regcache)
+{
+ /* FIXME: cagney/2002-09-26: PR gdb/724: When making an inferior
+ function call GDB knows the address of the struct return value
+ and hence, should not need to call this function. Unfortunately,
+ the current call_function_by_hand() code only saves the most
+ recent struct address leading to occasional calls. The code
+ should instead maintain a stack of such addresses (in the dummy
+ frame object). */
+ /* NOTE: cagney/2002-09-26: Return 0 which indicates that we've
+ really got no idea where the return value is being stored. While
+ r3, on function entry, contained the address it will have since
+ been reused (scratch) and hence wouldn't be valid */
+ return 0;
}
/* Return whether PC is in a dummy function call.
rs6000_set_host_arch_hook (pid);
}
\f
-/* Support for CONVERT_FROM_FUNC_PTR_ADDR(ADDR).
+/* Support for CONVERT_FROM_FUNC_PTR_ADDR (ARCH, ADDR, TARG).
Usually a function pointer's representation is simply the address
of the function. On the RS/6000 however, a function pointer is
/* Return real function address if ADDR (a function pointer) is in the data
space and is therefore a special function pointer. */
-CORE_ADDR
-rs6000_convert_from_func_ptr_addr (CORE_ADDR addr)
+static CORE_ADDR
+rs6000_convert_from_func_ptr_addr (struct gdbarch *gdbarch,
+ CORE_ADDR addr,
+ struct target_ops *targ)
{
struct obj_section *s;
/* 0 */ P(r0), P(r1), P(r2), P(r3), P(r4), P(r5), P(r6), P(r7), \
/* 8 */ P(r8), P(r9), P(r10),P(r11),P(r12),P(r13),P(r14),P(r15), \
/* 16 */ P(r16),P(r17),P(r18),P(r19),P(r20),P(r21),P(r22),P(r23), \
- /* 24 */ P(r24),P(r25),P(r26),P(r27),P(r28),P(r29),P(r30),P(r31), \
+ /* 24 */ P(r24),P(r25),P(r26),P(r27),P(r28),P(r29),P(r30),P(r31)
/* IBM POWER (pre-PowerPC) architecture, user-level view. We only cover
user-level SPR's. */
PPC_UISA_NOFP_SPRS,
/* 7...38 */
PPC_EV_REGS,
+ R8(acc), R(spefscr),
+ /* NOTE: Add new registers here the end of the raw register
+ list and just before the first pseudo register. */
/* 39...70 */
PPC_GPRS_PSEUDO_REGS
};
unsigned long mach;
bfd abfd;
int sysv_abi;
- enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;
asection *sect;
from_xcoff_exec = info.abfd && info.abfd->format == bfd_object &&
sysv_abi = info.abfd && bfd_get_flavour (info.abfd) == bfd_target_elf_flavour;
- if (info.abfd)
- osabi = gdbarch_lookup_osabi (info.abfd);
-
/* Check word size. If INFO is from a binary file, infer it from
that, else choose a likely default. */
if (from_xcoff_exec)
meaningful, because 64-bit CPUs can run in 32-bit mode. So, perform
separate word size check. */
tdep = gdbarch_tdep (arches->gdbarch);
- if (tdep && tdep->wordsize == wordsize && tdep->osabi == osabi)
+ if (tdep && tdep->wordsize == wordsize)
return arches->gdbarch;
}
else
{
arch = bfd_arch_powerpc;
- mach = 0;
- bfd_default_set_arch_mach (&abfd, arch, mach);
+ bfd_default_set_arch_mach (&abfd, arch, 0);
info.bfd_arch_info = bfd_get_arch_info (&abfd);
+ mach = info.bfd_arch_info->mach;
}
tdep = xmalloc (sizeof (struct gdbarch_tdep));
tdep->wordsize = wordsize;
- tdep->osabi = osabi;
/* For e500 executables, the apuinfo section is of help here. Such
section contains the identifier and revision number of each
set_gdbarch_pc_regnum (gdbarch, 64);
set_gdbarch_sp_regnum (gdbarch, 1);
- set_gdbarch_fp_regnum (gdbarch, 1);
+ set_gdbarch_deprecated_fp_regnum (gdbarch, 1);
+ if (sysv_abi && wordsize == 8)
+ {
+ set_gdbarch_extract_return_value (gdbarch, ppc64_sysv_abi_extract_return_value);
+ set_gdbarch_store_return_value (gdbarch, ppc64_sysv_abi_store_return_value);
+ }
+ else if (sysv_abi && wordsize == 4)
+ {
+ set_gdbarch_extract_return_value (gdbarch, ppc_sysv_abi_extract_return_value);
+ set_gdbarch_store_return_value (gdbarch, ppc_sysv_abi_store_return_value);
+ }
+ else
+ {
+ set_gdbarch_deprecated_extract_return_value (gdbarch, rs6000_extract_return_value);
+ set_gdbarch_deprecated_store_return_value (gdbarch, rs6000_store_return_value);
+ }
if (v->arch == bfd_arch_powerpc)
switch (v->mach)
break;
case bfd_mach_ppc_7400:
tdep->ppc_vr0_regnum = 119;
- tdep->ppc_vrsave_regnum = 153;
+ tdep->ppc_vrsave_regnum = 152;
tdep->ppc_ev0_regnum = -1;
tdep->ppc_ev31_regnum = -1;
break;
case bfd_mach_ppc_e500:
- tdep->ppc_gp0_regnum = 39;
- tdep->ppc_gplast_regnum = 70;
+ tdep->ppc_gp0_regnum = 41;
+ tdep->ppc_gplast_regnum = tdep->ppc_gp0_regnum + 32 - 1;
tdep->ppc_toc_regnum = -1;
tdep->ppc_ps_regnum = 1;
tdep->ppc_cr_regnum = 2;
tdep->ppc_ev0_regnum = 7;
tdep->ppc_ev31_regnum = 38;
set_gdbarch_pc_regnum (gdbarch, 0);
- set_gdbarch_sp_regnum (gdbarch, 40);
- set_gdbarch_fp_regnum (gdbarch, 40);
+ set_gdbarch_sp_regnum (gdbarch, tdep->ppc_gp0_regnum + 1);
+ set_gdbarch_deprecated_fp_regnum (gdbarch, tdep->ppc_gp0_regnum + 1);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, e500_dwarf2_reg_to_regnum);
set_gdbarch_pseudo_register_read (gdbarch, e500_pseudo_register_read);
set_gdbarch_pseudo_register_write (gdbarch, e500_pseudo_register_write);
break;
}
+ /* Sanity check on registers. */
+ gdb_assert (strcmp (tdep->regs[tdep->ppc_gp0_regnum].name, "r0") == 0);
+
/* Set lr_frame_offset. */
if (wordsize == 8)
tdep->lr_frame_offset = 16;
else
set_gdbarch_print_insn (gdbarch, gdb_print_insn_powerpc);
- set_gdbarch_read_pc (gdbarch, generic_target_read_pc);
set_gdbarch_write_pc (gdbarch, generic_target_write_pc);
- set_gdbarch_read_fp (gdbarch, generic_target_read_fp);
- set_gdbarch_read_sp (gdbarch, generic_target_read_sp);
- set_gdbarch_write_sp (gdbarch, generic_target_write_sp);
set_gdbarch_num_regs (gdbarch, v->nregs);
set_gdbarch_num_pseudo_regs (gdbarch, v->npregs);
set_gdbarch_register_name (gdbarch, rs6000_register_name);
- set_gdbarch_register_size (gdbarch, wordsize);
- set_gdbarch_register_bytes (gdbarch, off);
- set_gdbarch_register_byte (gdbarch, rs6000_register_byte);
- set_gdbarch_register_raw_size (gdbarch, rs6000_register_raw_size);
- set_gdbarch_max_register_raw_size (gdbarch, 16);
- set_gdbarch_register_virtual_size (gdbarch, generic_register_size);
- set_gdbarch_max_register_virtual_size (gdbarch, 16);
- set_gdbarch_register_virtual_type (gdbarch, rs6000_register_virtual_type);
+ set_gdbarch_deprecated_register_size (gdbarch, wordsize);
+ set_gdbarch_deprecated_register_bytes (gdbarch, off);
+ set_gdbarch_deprecated_register_byte (gdbarch, rs6000_register_byte);
+ set_gdbarch_deprecated_register_raw_size (gdbarch, rs6000_register_raw_size);
+ set_gdbarch_deprecated_register_virtual_type (gdbarch, rs6000_register_virtual_type);
set_gdbarch_ptr_bit (gdbarch, wordsize * TARGET_CHAR_BIT);
set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
- set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
+ if (sysv_abi)
+ set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT);
+ else
+ set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_char_signed (gdbarch, 0);
- set_gdbarch_use_generic_dummy_frames (gdbarch, 1);
- set_gdbarch_call_dummy_length (gdbarch, 0);
- set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
- set_gdbarch_call_dummy_address (gdbarch, entry_point_address);
- set_gdbarch_call_dummy_breakpoint_offset_p (gdbarch, 1);
- set_gdbarch_call_dummy_breakpoint_offset (gdbarch, 0);
- set_gdbarch_call_dummy_start_offset (gdbarch, 0);
- set_gdbarch_pc_in_call_dummy (gdbarch, generic_pc_in_call_dummy);
- set_gdbarch_call_dummy_p (gdbarch, 1);
- set_gdbarch_call_dummy_stack_adjust_p (gdbarch, 0);
- set_gdbarch_get_saved_register (gdbarch, generic_unwind_get_saved_register);
- set_gdbarch_fix_call_dummy (gdbarch, rs6000_fix_call_dummy);
- set_gdbarch_push_dummy_frame (gdbarch, generic_push_dummy_frame);
- set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
- set_gdbarch_push_return_address (gdbarch, ppc_push_return_address);
+ set_gdbarch_frame_align (gdbarch, rs6000_frame_align);
+ if (sysv_abi && wordsize == 8)
+ /* PPC64 SYSV. */
+ set_gdbarch_frame_red_zone_size (gdbarch, 288);
+ else if (!sysv_abi && wordsize == 4)
+ /* PowerOpen / AIX 32 bit. The saved area or red zone consists of
+ 19 4 byte GPRS + 18 8 byte FPRs giving a total of 220 bytes.
+ Problem is, 220 isn't frame (16 byte) aligned. Round it up to
+ 224. */
+ set_gdbarch_frame_red_zone_size (gdbarch, 224);
+ set_gdbarch_deprecated_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos);
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
- set_gdbarch_coerce_float_to_double (gdbarch, rs6000_coerce_float_to_double);
- set_gdbarch_register_convertible (gdbarch, rs6000_register_convertible);
- set_gdbarch_register_convert_to_virtual (gdbarch, rs6000_register_convert_to_virtual);
- set_gdbarch_register_convert_to_raw (gdbarch, rs6000_register_convert_to_raw);
+ set_gdbarch_deprecated_register_convertible (gdbarch, rs6000_register_convertible);
+ set_gdbarch_deprecated_register_convert_to_virtual (gdbarch, rs6000_register_convert_to_virtual);
+ set_gdbarch_deprecated_register_convert_to_raw (gdbarch, rs6000_register_convert_to_raw);
set_gdbarch_stab_reg_to_regnum (gdbarch, rs6000_stab_reg_to_regnum);
-
- set_gdbarch_deprecated_extract_return_value (gdbarch, rs6000_extract_return_value);
-
/* Note: kevinb/2002-04-12: I'm not convinced that rs6000_push_arguments()
is correct for the SysV ABI when the wordsize is 8, but I'm also
fairly certain that ppc_sysv_abi_push_arguments() will give even
64-bit code. At some point in the future, this matter needs to be
revisited. */
if (sysv_abi && wordsize == 4)
- set_gdbarch_push_arguments (gdbarch, ppc_sysv_abi_push_arguments);
+ set_gdbarch_push_dummy_call (gdbarch, ppc_sysv_abi_push_dummy_call);
+ else if (sysv_abi && wordsize == 8)
+ set_gdbarch_push_dummy_call (gdbarch, ppc64_sysv_abi_push_dummy_call);
else
- set_gdbarch_push_arguments (gdbarch, rs6000_push_arguments);
+ set_gdbarch_push_dummy_call (gdbarch, rs6000_push_dummy_call);
- set_gdbarch_store_struct_return (gdbarch, rs6000_store_struct_return);
- set_gdbarch_store_return_value (gdbarch, rs6000_store_return_value);
- set_gdbarch_deprecated_extract_struct_value_address (gdbarch, rs6000_extract_struct_value_address);
- set_gdbarch_pop_frame (gdbarch, rs6000_pop_frame);
+ set_gdbarch_extract_struct_value_address (gdbarch, rs6000_extract_struct_value_address);
+ set_gdbarch_deprecated_pop_frame (gdbarch, rs6000_pop_frame);
set_gdbarch_skip_prologue (gdbarch, rs6000_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
/* Not sure on this. FIXMEmgo */
set_gdbarch_frame_args_skip (gdbarch, 8);
- if (sysv_abi)
+ if (sysv_abi && wordsize == 4)
set_gdbarch_use_struct_convention (gdbarch,
ppc_sysv_abi_use_struct_convention);
+ else if (sysv_abi && wordsize == 8)
+ set_gdbarch_use_struct_convention (gdbarch, ppc64_sysv_abi_use_struct_convention);
else
set_gdbarch_use_struct_convention (gdbarch,
- generic_use_struct_convention);
-
- set_gdbarch_frame_chain_valid (gdbarch, file_frame_chain_valid);
+ rs6000_use_struct_convention);
set_gdbarch_frameless_function_invocation (gdbarch,
rs6000_frameless_function_invocation);
- set_gdbarch_frame_chain (gdbarch, rs6000_frame_chain);
- set_gdbarch_frame_saved_pc (gdbarch, rs6000_frame_saved_pc);
+ set_gdbarch_deprecated_frame_chain (gdbarch, rs6000_frame_chain);
+ set_gdbarch_deprecated_frame_saved_pc (gdbarch, rs6000_frame_saved_pc);
- set_gdbarch_frame_init_saved_regs (gdbarch, rs6000_frame_init_saved_regs);
- set_gdbarch_init_extra_frame_info (gdbarch, rs6000_init_extra_frame_info);
+ set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, rs6000_frame_init_saved_regs);
+ set_gdbarch_deprecated_init_extra_frame_info (gdbarch, rs6000_init_extra_frame_info);
if (!sysv_abi)
{
set_gdbarch_convert_from_func_ptr_addr (gdbarch,
rs6000_convert_from_func_ptr_addr);
}
- set_gdbarch_frame_args_address (gdbarch, rs6000_frame_args_address);
- set_gdbarch_frame_locals_address (gdbarch, rs6000_frame_args_address);
- set_gdbarch_saved_pc_after_call (gdbarch, rs6000_saved_pc_after_call);
+ set_gdbarch_deprecated_frame_args_address (gdbarch, rs6000_frame_args_address);
+ set_gdbarch_deprecated_frame_locals_address (gdbarch, rs6000_frame_args_address);
+ set_gdbarch_deprecated_saved_pc_after_call (gdbarch, rs6000_saved_pc_after_call);
- /* We can't tell how many args there are
- now that the C compiler delays popping them. */
- set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown);
+ /* Helpers for function argument information. */
+ set_gdbarch_fetch_pointer_argument (gdbarch, rs6000_fetch_pointer_argument);
/* Hook in ABI-specific overrides, if they have been registered. */
- gdbarch_init_osabi (info, gdbarch, osabi);
+ gdbarch_init_osabi (info, gdbarch);
+
+ if (from_xcoff_exec)
+ {
+ /* NOTE: jimix/2003-06-09: This test should really check for
+ GDB_OSABI_AIX when that is defined and becomes
+ available. (Actually, once things are properly split apart,
+ the test goes away.) */
+ /* RS6000/AIX does not support PT_STEP. Has to be simulated. */
+ set_gdbarch_software_single_step (gdbarch, rs6000_software_single_step);
+ }
return gdbarch;
}
if (tdep == NULL)
return;
- fprintf_unfiltered (file, "rs6000_dump_tdep: OS ABI = %s\n",
- gdbarch_osabi_name (tdep->osabi));
+ /* FIXME: Dump gdbarch_tdep. */
}
static struct cmd_list_element *info_powerpc_cmdlist = NULL;
/* Initialization code. */
+extern initialize_file_ftype _initialize_rs6000_tdep; /* -Wmissing-prototypes */
+
void
_initialize_rs6000_tdep (void)
{
projects / deliverable / binutils-gdb.git / blobdiff