/* Native support code for PPC AIX, for GDB the GNU debugger.
- Copyright (C) 2006-2013 Free Software Foundation, Inc.
+ Copyright (C) 2006-2020 Free Software Foundation, Inc.
Free Software Foundation, Inc.
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "gdb_string.h"
-#include "gdb_assert.h"
#include "osabi.h"
#include "regcache.h"
#include "regset.h"
#include "breakpoint.h"
#include "rs6000-tdep.h"
#include "ppc-tdep.h"
-#include "exceptions.h"
+#include "rs6000-aix-tdep.h"
#include "xcoffread.h"
#include "solib.h"
#include "solib-aix.h"
+#include "target-float.h"
+#include "gdbsupport/xml-utils.h"
+#include "trad-frame.h"
+#include "frame-unwind.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 signal handler doesn't save this register, so we have to
access the sigcontext structure via an offset from the signal handler
frame.
- The following constants were determined by experimentation on AIX 3.2. */
+ The following constants were determined by experimentation on AIX 3.2.
+
+ sigcontext structure have the mstsave saved under the
+ sc_jmpbuf.jmp_context. STKMIN(minimum stack size) is 56 for 32-bit
+ processes, and iar offset under sc_jmpbuf.jmp_context is 40.
+ ie offsetof(struct sigcontext, sc_jmpbuf.jmp_context.iar).
+ so PC offset in this case is STKMIN+iar offset, which is 96. */
+
#define SIG_FRAME_PC_OFFSET 96
#define SIG_FRAME_LR_OFFSET 108
+/* STKMIN+grp1 offset, which is 56+228=284 */
#define SIG_FRAME_FP_OFFSET 284
+/* 64 bit process.
+ STKMIN64 is 112 and iar offset is 312. So 112+312=424 */
+#define SIG_FRAME_LR_OFFSET64 424
+/* STKMIN64+grp1 offset. 112+56=168 */
+#define SIG_FRAME_FP_OFFSET64 168
+
+static struct trad_frame_cache *
+aix_sighandle_frame_cache (struct frame_info *this_frame,
+ void **this_cache)
+{
+ LONGEST backchain;
+ CORE_ADDR base, base_orig, func;
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ struct trad_frame_cache *this_trad_cache;
+
+ if ((*this_cache) != NULL)
+ return (struct trad_frame_cache *) (*this_cache);
+
+ this_trad_cache = trad_frame_cache_zalloc (this_frame);
+ (*this_cache) = this_trad_cache;
+
+ base = get_frame_register_unsigned (this_frame,
+ gdbarch_sp_regnum (gdbarch));
+ base_orig = base;
+
+ if (tdep->wordsize == 4)
+ {
+ func = read_memory_unsigned_integer (base_orig +
+ SIG_FRAME_PC_OFFSET + 8,
+ tdep->wordsize, byte_order);
+ safe_read_memory_integer (base_orig + SIG_FRAME_FP_OFFSET + 8,
+ tdep->wordsize, byte_order, &backchain);
+ base = (CORE_ADDR)backchain;
+ }
+ else
+ {
+ func = read_memory_unsigned_integer (base_orig +
+ SIG_FRAME_LR_OFFSET64,
+ tdep->wordsize, byte_order);
+ safe_read_memory_integer (base_orig + SIG_FRAME_FP_OFFSET64,
+ tdep->wordsize, byte_order, &backchain);
+ base = (CORE_ADDR)backchain;
+ }
+
+ trad_frame_set_reg_value (this_trad_cache, gdbarch_pc_regnum (gdbarch), func);
+ trad_frame_set_reg_value (this_trad_cache, gdbarch_sp_regnum (gdbarch), base);
+
+ if (tdep->wordsize == 4)
+ trad_frame_set_reg_addr (this_trad_cache, tdep->ppc_lr_regnum,
+ base_orig + 0x38 + 52 + 8);
+ else
+ trad_frame_set_reg_addr (this_trad_cache, tdep->ppc_lr_regnum,
+ base_orig + 0x70 + 320);
+
+ trad_frame_set_id (this_trad_cache, frame_id_build (base, func));
+ trad_frame_set_this_base (this_trad_cache, base);
+
+ return this_trad_cache;
+}
+
+static void
+aix_sighandle_frame_this_id (struct frame_info *this_frame,
+ void **this_prologue_cache,
+ struct frame_id *this_id)
+{
+ struct trad_frame_cache *this_trad_cache
+ = aix_sighandle_frame_cache (this_frame, this_prologue_cache);
+ trad_frame_get_id (this_trad_cache, this_id);
+}
+
+static struct value *
+aix_sighandle_frame_prev_register (struct frame_info *this_frame,
+ void **this_prologue_cache, int regnum)
+{
+ struct trad_frame_cache *this_trad_cache
+ = aix_sighandle_frame_cache (this_frame, this_prologue_cache);
+ return trad_frame_get_register (this_trad_cache, this_frame, regnum);
+}
+
+static int
+aix_sighandle_frame_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame,
+ void **this_prologue_cache)
+{
+ CORE_ADDR pc = get_frame_pc (this_frame);
+ if (pc && pc < AIX_TEXT_SEGMENT_BASE)
+ return 1;
+
+ return 0;
+}
+
+/* AIX signal handler frame unwinder */
+
+static const struct frame_unwind aix_sighandle_frame_unwind = {
+ SIGTRAMP_FRAME,
+ default_frame_unwind_stop_reason,
+ aix_sighandle_frame_this_id,
+ aix_sighandle_frame_prev_register,
+ NULL,
+ aix_sighandle_frame_sniffer
+};
/* Core file support. */
/* Floating-point registers. */
336, /* f0_offset */
56, /* fpscr_offset */
- 4, /* fpscr_size */
-
- /* AltiVec registers. */
- -1, /* vr0_offset */
- -1, /* vscr_offset */
- -1 /* vrsave_offset */
+ 4 /* fpscr_size */
};
static struct ppc_reg_offsets rs6000_aix64_reg_offsets =
/* Floating-point registers. */
312, /* f0_offset */
296, /* fpscr_offset */
- 4, /* fpscr_size */
-
- /* AltiVec registers. */
- -1, /* vr0_offset */
- -1, /* vscr_offset */
- -1 /* vrsave_offset */
+ 4 /* fpscr_size */
};
/* AIX register set. */
-static struct regset rs6000_aix32_regset =
+static const struct regset rs6000_aix32_regset =
{
&rs6000_aix32_reg_offsets,
rs6000_aix_supply_regset,
rs6000_aix_collect_regset,
};
-static struct regset rs6000_aix64_regset =
+static const struct regset rs6000_aix64_regset =
{
&rs6000_aix64_reg_offsets,
rs6000_aix_supply_regset,
rs6000_aix_collect_regset,
};
-/* Return the appropriate register set for the core section identified
- by SECT_NAME and SECT_SIZE. */
+/* Iterate over core file register note sections. */
-static const struct regset *
-rs6000_aix_regset_from_core_section (struct gdbarch *gdbarch,
- const char *sect_name, size_t sect_size)
+static void
+rs6000_aix_iterate_over_regset_sections (struct gdbarch *gdbarch,
+ iterate_over_regset_sections_cb *cb,
+ void *cb_data,
+ const struct regcache *regcache)
{
if (gdbarch_tdep (gdbarch)->wordsize == 4)
- {
- if (strcmp (sect_name, ".reg") == 0 && sect_size >= 592)
- return &rs6000_aix32_regset;
- }
+ cb (".reg", 592, 592, &rs6000_aix32_regset, NULL, cb_data);
else
- {
- if (strcmp (sect_name, ".reg") == 0 && sect_size >= 576)
- return &rs6000_aix64_regset;
- }
-
- return NULL;
+ cb (".reg", 576, 576, &rs6000_aix64_regset, NULL, cb_data);
}
rs6000_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr,
int nargs, struct value **args, CORE_ADDR sp,
- int struct_return, CORE_ADDR struct_addr)
+ function_call_return_method return_method,
+ CORE_ADDR struct_addr)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
(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)
+ if (return_method == return_method_struct)
{
regcache_raw_write_unsigned (regcache, tdep->ppc_gp0_regnum + 3,
struct_addr);
if (TYPE_CODE (type) == TYPE_CODE_FLT)
{
-
/* Floating point arguments are passed in fpr's, as well as gpr's.
There are 13 fpr's reserved for passing parameters. At this point
- there is no way we would run out of them. */
+ there is no way we would run out of them.
+
+ Always store the floating point value using the register's
+ floating-point format. */
+ const int fp_regnum = tdep->ppc_fp0_regnum + 1 + f_argno;
+ gdb_byte reg_val[PPC_MAX_REGISTER_SIZE];
+ struct type *reg_type = register_type (gdbarch, fp_regnum);
gdb_assert (len <= 8);
- regcache_cooked_write (regcache,
- tdep->ppc_fp0_regnum + 1 + f_argno,
- value_contents (arg));
+ target_float_convert (value_contents (arg), type, reg_val, reg_type);
+ regcache->cooked_write (fp_regnum, reg_val);
++f_argno;
}
/* Argument takes more than one register. */
while (argbytes < len)
{
- gdb_byte word[MAX_REGISTER_SIZE];
+ gdb_byte word[PPC_MAX_REGISTER_SIZE];
memset (word, 0, reg_size);
memcpy (word,
((char *) value_contents (arg)) + argbytes,
(len - argbytes) > reg_size
? reg_size : len - argbytes);
- regcache_cooked_write (regcache,
- tdep->ppc_gp0_regnum + 3 + ii,
- word);
+ regcache->cooked_write (tdep->ppc_gp0_regnum + 3 + ii, word);
++ii, argbytes += reg_size;
if (ii >= 8)
else
{
/* Argument can fit in one register. No problem. */
- int adj = gdbarch_byte_order (gdbarch)
- == BFD_ENDIAN_BIG ? reg_size - len : 0;
- gdb_byte word[MAX_REGISTER_SIZE];
+ gdb_byte word[PPC_MAX_REGISTER_SIZE];
memset (word, 0, reg_size);
memcpy (word, value_contents (arg), len);
- regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3 +ii, word);
+ regcache->cooked_write (tdep->ppc_gp0_regnum + 3 +ii, word);
}
++argno;
}
gdb_assert (len <= 8);
- regcache_cooked_write (regcache,
- tdep->ppc_fp0_regnum + 1 + f_argno,
- value_contents (arg));
+ regcache->cooked_write (tdep->ppc_fp0_regnum + 1 + f_argno,
+ value_contents (arg));
++f_argno;
}
&& TYPE_LENGTH (valtype) == 16)
{
if (readbuf)
- regcache_cooked_read (regcache, tdep->ppc_vr0_regnum + 2, readbuf);
+ regcache->cooked_read (tdep->ppc_vr0_regnum + 2, readbuf);
if (writebuf)
- regcache_cooked_write (regcache, tdep->ppc_vr0_regnum + 2, writebuf);
+ regcache->cooked_write (tdep->ppc_vr0_regnum + 2, writebuf);
return RETURN_VALUE_REGISTER_CONVENTION;
}
if (readbuf)
{
- regcache_cooked_read (regcache, tdep->ppc_fp0_regnum + 1, regval);
- convert_typed_floating (regval, regtype, readbuf, valtype);
+ regcache->cooked_read (tdep->ppc_fp0_regnum + 1, regval);
+ target_float_convert (regval, regtype, readbuf, valtype);
}
if (writebuf)
{
- convert_typed_floating (writebuf, valtype, regval, regtype);
- regcache_cooked_write (regcache, tdep->ppc_fp0_regnum + 1, regval);
+ target_float_convert (writebuf, valtype, regval, regtype);
+ regcache->cooked_write (tdep->ppc_fp0_regnum + 1, regval);
}
return RETURN_VALUE_REGISTER_CONVENTION;
{
gdb_byte regval[8];
- regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 3, regval);
- regcache_cooked_read (regcache, tdep->ppc_gp0_regnum + 4,
- regval + 4);
+ regcache->cooked_read (tdep->ppc_gp0_regnum + 3, regval);
+ regcache->cooked_read (tdep->ppc_gp0_regnum + 4, regval + 4);
memcpy (readbuf, regval, 8);
}
if (writebuf)
{
- regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 3, writebuf);
- regcache_cooked_write (regcache, tdep->ppc_gp0_regnum + 4,
- writebuf + 4);
+ regcache->cooked_write (tdep->ppc_gp0_regnum + 3, writebuf);
+ regcache->cooked_write (tdep->ppc_gp0_regnum + 4, writebuf + 4);
}
return RETURN_VALUE_REGISTER_CONVENTION;
{
CORE_ADDR pc = 0;
struct obj_section *pc_section;
- volatile struct gdb_exception e;
- TRY_CATCH (e, RETURN_MASK_ERROR)
+ try
{
pc = read_memory_unsigned_integer (addr, tdep->wordsize, byte_order);
}
- if (e.reason < 0)
+ catch (const gdb_exception_error &e)
{
/* An error occured during reading. Probably a memory error
due to the section not being loaded yet. This address
cannot be a function descriptor. */
return addr;
}
+
pc_section = find_pc_section (pc);
if (pc_section && (pc_section->the_bfd_section->flags & SEC_CODE))
/* Calculate the destination of a branch/jump. Return -1 if not a branch. */
static CORE_ADDR
-branch_dest (struct frame_info *frame, int opcode, int instr,
+branch_dest (struct regcache *regcache, int opcode, int instr,
CORE_ADDR pc, CORE_ADDR safety)
{
- struct gdbarch *gdbarch = get_frame_arch (frame);
+ struct gdbarch *gdbarch = regcache->arch ();
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
CORE_ADDR dest;
if (ext_op == 16) /* br conditional register */
{
- dest = get_frame_register_unsigned (frame, tdep->ppc_lr_regnum) & ~3;
+ dest = regcache_raw_get_unsigned (regcache, tdep->ppc_lr_regnum) & ~3;
/* If we are about to return from a signal handler, dest is
something like 0x3c90. The current frame is a signal handler
caller frame, upon completion of the sigreturn system call
execution will return to the saved PC in the frame. */
if (dest < AIX_TEXT_SEGMENT_BASE)
- dest = read_memory_unsigned_integer
- (get_frame_base (frame) + SIG_FRAME_PC_OFFSET,
- tdep->wordsize, byte_order);
+ {
+ struct frame_info *frame = get_current_frame ();
+
+ dest = read_memory_unsigned_integer
+ (get_frame_base (frame) + SIG_FRAME_PC_OFFSET,
+ tdep->wordsize, byte_order);
+ }
}
else if (ext_op == 528) /* br cond to count reg */
{
- dest = get_frame_register_unsigned (frame,
- tdep->ppc_ctr_regnum) & ~3;
+ dest = regcache_raw_get_unsigned (regcache,
+ tdep->ppc_ctr_regnum) & ~3;
/* If we are about to execute a system call, dest is something
like 0x22fc or 0x3b00. Upon completion the system call
will return to the address in the link register. */
if (dest < AIX_TEXT_SEGMENT_BASE)
- dest = get_frame_register_unsigned (frame,
- tdep->ppc_lr_regnum) & ~3;
+ dest = regcache_raw_get_unsigned (regcache,
+ tdep->ppc_lr_regnum) & ~3;
}
else
return -1;
/* AIX does not support PT_STEP. Simulate it. */
-static int
-rs6000_software_single_step (struct frame_info *frame)
+static std::vector<CORE_ADDR>
+rs6000_software_single_step (struct regcache *regcache)
{
- struct gdbarch *gdbarch = get_frame_arch (frame);
- struct address_space *aspace = get_frame_address_space (frame);
+ struct gdbarch *gdbarch = regcache->arch ();
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
int ii, insn;
CORE_ADDR loc;
CORE_ADDR breaks[2];
int opcode;
- loc = get_frame_pc (frame);
+ loc = regcache_read_pc (regcache);
insn = read_memory_integer (loc, 4, byte_order);
- if (ppc_deal_with_atomic_sequence (frame))
- return 1;
+ std::vector<CORE_ADDR> next_pcs = ppc_deal_with_atomic_sequence (regcache);
+ if (!next_pcs.empty ())
+ return next_pcs;
breaks[0] = loc + PPC_INSN_SIZE;
opcode = insn >> 26;
- breaks[1] = branch_dest (frame, opcode, insn, loc, breaks[0]);
+ breaks[1] = branch_dest (regcache, opcode, insn, loc, breaks[0]);
/* Don't put two breakpoints on the same address. */
if (breaks[1] == breaks[0])
/* ignore invalid breakpoint. */
if (breaks[ii] == -1)
continue;
- insert_single_step_breakpoint (gdbarch, aspace, breaks[ii]);
+
+ next_pcs.push_back (breaks[ii]);
}
errno = 0; /* FIXME, don't ignore errors! */
/* What errors? {read,write}_memory call error(). */
- return 1;
+ return next_pcs;
}
/* Implement the "auto_wide_charset" gdbarch method for this platform. */
return GDB_OSABI_AIX;
}
+/* A structure encoding the offset and size of a field within
+ a struct. */
+
+struct field_info
+{
+ int offset;
+ int size;
+};
+
+/* A structure describing the layout of all the fields of interest
+ in AIX's struct ld_info. Each field in this struct corresponds
+ to the field of the same name in struct ld_info. */
+
+struct ld_info_desc
+{
+ struct field_info ldinfo_next;
+ struct field_info ldinfo_fd;
+ struct field_info ldinfo_textorg;
+ struct field_info ldinfo_textsize;
+ struct field_info ldinfo_dataorg;
+ struct field_info ldinfo_datasize;
+ struct field_info ldinfo_filename;
+};
+
+/* The following data has been generated by compiling and running
+ the following program on AIX 5.3. */
+
+#if 0
+#include <stddef.h>
+#include <stdio.h>
+#define __LDINFO_PTRACE32__
+#define __LDINFO_PTRACE64__
+#include <sys/ldr.h>
+
+#define pinfo(type,member) \
+ { \
+ struct type ldi = {0}; \
+ \
+ printf (" {%d, %d},\t/* %s */\n", \
+ offsetof (struct type, member), \
+ sizeof (ldi.member), \
+ #member); \
+ } \
+ while (0)
+
+int
+main (void)
+{
+ printf ("static const struct ld_info_desc ld_info32_desc =\n{\n");
+ pinfo (__ld_info32, ldinfo_next);
+ pinfo (__ld_info32, ldinfo_fd);
+ pinfo (__ld_info32, ldinfo_textorg);
+ pinfo (__ld_info32, ldinfo_textsize);
+ pinfo (__ld_info32, ldinfo_dataorg);
+ pinfo (__ld_info32, ldinfo_datasize);
+ pinfo (__ld_info32, ldinfo_filename);
+ printf ("};\n");
+
+ printf ("\n");
+
+ printf ("static const struct ld_info_desc ld_info64_desc =\n{\n");
+ pinfo (__ld_info64, ldinfo_next);
+ pinfo (__ld_info64, ldinfo_fd);
+ pinfo (__ld_info64, ldinfo_textorg);
+ pinfo (__ld_info64, ldinfo_textsize);
+ pinfo (__ld_info64, ldinfo_dataorg);
+ pinfo (__ld_info64, ldinfo_datasize);
+ pinfo (__ld_info64, ldinfo_filename);
+ printf ("};\n");
+
+ return 0;
+}
+#endif /* 0 */
+
+/* Layout of the 32bit version of struct ld_info. */
+
+static const struct ld_info_desc ld_info32_desc =
+{
+ {0, 4}, /* ldinfo_next */
+ {4, 4}, /* ldinfo_fd */
+ {8, 4}, /* ldinfo_textorg */
+ {12, 4}, /* ldinfo_textsize */
+ {16, 4}, /* ldinfo_dataorg */
+ {20, 4}, /* ldinfo_datasize */
+ {24, 2}, /* ldinfo_filename */
+};
+
+/* Layout of the 64bit version of struct ld_info. */
+
+static const struct ld_info_desc ld_info64_desc =
+{
+ {0, 4}, /* ldinfo_next */
+ {8, 4}, /* ldinfo_fd */
+ {16, 8}, /* ldinfo_textorg */
+ {24, 8}, /* ldinfo_textsize */
+ {32, 8}, /* ldinfo_dataorg */
+ {40, 8}, /* ldinfo_datasize */
+ {48, 2}, /* ldinfo_filename */
+};
+
+/* A structured representation of one entry read from the ld_info
+ binary data provided by the AIX loader. */
+
+struct ld_info
+{
+ ULONGEST next;
+ int fd;
+ CORE_ADDR textorg;
+ ULONGEST textsize;
+ CORE_ADDR dataorg;
+ ULONGEST datasize;
+ char *filename;
+ char *member_name;
+};
+
+/* Return a struct ld_info object corresponding to the entry at
+ LDI_BUF.
+
+ Note that the filename and member_name strings still point
+ to the data in LDI_BUF. So LDI_BUF must not be deallocated
+ while the struct ld_info object returned is in use. */
+
+static struct ld_info
+rs6000_aix_extract_ld_info (struct gdbarch *gdbarch,
+ const gdb_byte *ldi_buf)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ struct type *ptr_type = builtin_type (gdbarch)->builtin_data_ptr;
+ const struct ld_info_desc desc
+ = tdep->wordsize == 8 ? ld_info64_desc : ld_info32_desc;
+ struct ld_info info;
+
+ info.next = extract_unsigned_integer (ldi_buf + desc.ldinfo_next.offset,
+ desc.ldinfo_next.size,
+ byte_order);
+ info.fd = extract_signed_integer (ldi_buf + desc.ldinfo_fd.offset,
+ desc.ldinfo_fd.size,
+ byte_order);
+ info.textorg = extract_typed_address (ldi_buf + desc.ldinfo_textorg.offset,
+ ptr_type);
+ info.textsize
+ = extract_unsigned_integer (ldi_buf + desc.ldinfo_textsize.offset,
+ desc.ldinfo_textsize.size,
+ byte_order);
+ info.dataorg = extract_typed_address (ldi_buf + desc.ldinfo_dataorg.offset,
+ ptr_type);
+ info.datasize
+ = extract_unsigned_integer (ldi_buf + desc.ldinfo_datasize.offset,
+ desc.ldinfo_datasize.size,
+ byte_order);
+ info.filename = (char *) ldi_buf + desc.ldinfo_filename.offset;
+ info.member_name = info.filename + strlen (info.filename) + 1;
+
+ return info;
+}
+
+/* Append to OBJSTACK an XML string description of the shared library
+ corresponding to LDI, following the TARGET_OBJECT_LIBRARIES_AIX
+ format. */
+
+static void
+rs6000_aix_shared_library_to_xml (struct ld_info *ldi,
+ struct obstack *obstack)
+{
+ obstack_grow_str (obstack, "<library name=\"");
+ std::string p = xml_escape_text (ldi->filename);
+ obstack_grow_str (obstack, p.c_str ());
+ obstack_grow_str (obstack, "\"");
+
+ if (ldi->member_name[0] != '\0')
+ {
+ obstack_grow_str (obstack, " member=\"");
+ p = xml_escape_text (ldi->member_name);
+ obstack_grow_str (obstack, p.c_str ());
+ obstack_grow_str (obstack, "\"");
+ }
+
+ obstack_grow_str (obstack, " text_addr=\"");
+ obstack_grow_str (obstack, core_addr_to_string (ldi->textorg));
+ obstack_grow_str (obstack, "\"");
+
+ obstack_grow_str (obstack, " text_size=\"");
+ obstack_grow_str (obstack, pulongest (ldi->textsize));
+ obstack_grow_str (obstack, "\"");
+
+ obstack_grow_str (obstack, " data_addr=\"");
+ obstack_grow_str (obstack, core_addr_to_string (ldi->dataorg));
+ obstack_grow_str (obstack, "\"");
+
+ obstack_grow_str (obstack, " data_size=\"");
+ obstack_grow_str (obstack, pulongest (ldi->datasize));
+ obstack_grow_str (obstack, "\"");
+
+ obstack_grow_str (obstack, "></library>");
+}
+
+/* Convert the ld_info binary data provided by the AIX loader into
+ an XML representation following the TARGET_OBJECT_LIBRARIES_AIX
+ format.
+
+ LDI_BUF is a buffer containing the ld_info data.
+ READBUF, OFFSET and LEN follow the same semantics as target_ops'
+ to_xfer_partial target_ops method.
+
+ If CLOSE_LDINFO_FD is nonzero, then this routine also closes
+ the ldinfo_fd file descriptor. This is useful when the ldinfo
+ data is obtained via ptrace, as ptrace opens a file descriptor
+ for each and every entry; but we cannot use this descriptor
+ as the consumer of the XML library list might live in a different
+ process. */
+
+ULONGEST
+rs6000_aix_ld_info_to_xml (struct gdbarch *gdbarch, const gdb_byte *ldi_buf,
+ gdb_byte *readbuf, ULONGEST offset, ULONGEST len,
+ int close_ldinfo_fd)
+{
+ struct obstack obstack;
+ const char *buf;
+ ULONGEST len_avail;
+
+ obstack_init (&obstack);
+ obstack_grow_str (&obstack, "<library-list-aix version=\"1.0\">\n");
+
+ while (1)
+ {
+ struct ld_info ldi = rs6000_aix_extract_ld_info (gdbarch, ldi_buf);
+
+ rs6000_aix_shared_library_to_xml (&ldi, &obstack);
+ if (close_ldinfo_fd)
+ close (ldi.fd);
+
+ if (!ldi.next)
+ break;
+ ldi_buf = ldi_buf + ldi.next;
+ }
+
+ obstack_grow_str0 (&obstack, "</library-list-aix>\n");
+
+ buf = (const char *) obstack_finish (&obstack);
+ len_avail = strlen (buf);
+ if (offset >= len_avail)
+ len= 0;
+ else
+ {
+ if (len > len_avail - offset)
+ len = len_avail - offset;
+ memcpy (readbuf, buf + offset, len);
+ }
+
+ obstack_free (&obstack, NULL);
+ return len;
+}
+
+/* Implement the core_xfer_shared_libraries_aix gdbarch method. */
+
+static ULONGEST
+rs6000_aix_core_xfer_shared_libraries_aix (struct gdbarch *gdbarch,
+ gdb_byte *readbuf,
+ ULONGEST offset,
+ ULONGEST len)
+{
+ struct bfd_section *ldinfo_sec;
+ int ldinfo_size;
+
+ ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo");
+ if (ldinfo_sec == NULL)
+ error (_("cannot find .ldinfo section from core file: %s"),
+ bfd_errmsg (bfd_get_error ()));
+ ldinfo_size = bfd_section_size (ldinfo_sec);
+
+ gdb::byte_vector ldinfo_buf (ldinfo_size);
+
+ if (! bfd_get_section_contents (core_bfd, ldinfo_sec,
+ ldinfo_buf.data (), 0, ldinfo_size))
+ error (_("unable to read .ldinfo section from core file: %s"),
+ bfd_errmsg (bfd_get_error ()));
+
+ return rs6000_aix_ld_info_to_xml (gdbarch, ldinfo_buf.data (), readbuf,
+ offset, len, 0);
+}
+
static void
rs6000_aix_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
software single-stepping. */
set_gdbarch_displaced_step_copy_insn (gdbarch, NULL);
set_gdbarch_displaced_step_fixup (gdbarch, NULL);
- set_gdbarch_displaced_step_free_closure (gdbarch, NULL);
set_gdbarch_displaced_step_location (gdbarch, NULL);
set_gdbarch_push_dummy_call (gdbarch, rs6000_push_dummy_call);
(gdbarch, rs6000_convert_from_func_ptr_addr);
/* Core file support. */
- set_gdbarch_regset_from_core_section
- (gdbarch, rs6000_aix_regset_from_core_section);
+ set_gdbarch_iterate_over_regset_sections
+ (gdbarch, rs6000_aix_iterate_over_regset_sections);
+ set_gdbarch_core_xfer_shared_libraries_aix
+ (gdbarch, rs6000_aix_core_xfer_shared_libraries_aix);
if (tdep->wordsize == 8)
tdep->lr_frame_offset = 16;
else
set_gdbarch_frame_red_zone_size (gdbarch, 0);
+ if (tdep->wordsize == 8)
+ set_gdbarch_wchar_bit (gdbarch, 32);
+ else
+ set_gdbarch_wchar_bit (gdbarch, 16);
+ set_gdbarch_wchar_signed (gdbarch, 0);
set_gdbarch_auto_wide_charset (gdbarch, rs6000_aix_auto_wide_charset);
set_solib_ops (gdbarch, &solib_aix_so_ops);
+ frame_unwind_append_unwinder (gdbarch, &aix_sighandle_frame_unwind);
}
-/* Provide a prototype to silence -Wmissing-prototypes. */
-extern initialize_file_ftype _initialize_rs6000_aix_tdep;
-
void
_initialize_rs6000_aix_tdep (void)
{
projects / deliverable / binutils-gdb.git / blobdiff