/* Target-dependent code for GDB, the GNU debugger.
Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996,
- 1997, 2000, 2001, 2002 Free Software Foundation, Inc.
+ 1997, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of GDB.
#include "objfiles.h"
#include "regcache.h"
#include "value.h"
+#include "osabi.h"
#include "solib-svr4.h"
#include "ppc-tdep.h"
-/* The following two instructions are used in the signal trampoline
- code on GNU/Linux PPC. */
-#define INSTR_LI_R0_0x7777 0x38007777
-#define INSTR_SC 0x44000002
+/* The following instructions are used in the signal trampoline code
+ on GNU/Linux PPC. The kernel used to use magic syscalls 0x6666 and
+ 0x7777 but now uses the sigreturn syscalls. We check for both. */
+#define INSTR_LI_R0_0x6666 0x38006666
+#define INSTR_LI_R0_0x7777 0x38007777
+#define INSTR_LI_R0_NR_sigreturn 0x38000077
+#define INSTR_LI_R0_NR_rt_sigreturn 0x380000AC
+
+#define INSTR_SC 0x44000002
/* Since the *-tdep.c files are platform independent (i.e, they may be
used to build cross platform debuggers), we can't include system
behavior is ever fixed.)
PC_IN_SIGTRAMP is called from blockframe.c as well in order to set
- the signal_handler_caller flag. Because of our strange definition
- of in_sigtramp below, we can't rely on signal_handler_caller
+ the frame's type (if a SIGTRAMP_FRAME). Because of our strange
+ definition of in_sigtramp below, we can't rely on the frame's type
getting set correctly from within blockframe.c. This is why we
- take pains to set it in init_extra_frame_info(). */
+ take pains to set it in init_extra_frame_info().
+
+ NOTE: cagney/2002-11-10: I suspect the real problem here is that
+ the get_prev_frame() only initializes the frame's type after the
+ call to INIT_FRAME_INFO. get_prev_frame() should be fixed, this
+ code shouldn't be working its way around a bug :-(. */
int
ppc_linux_in_sigtramp (CORE_ADDR pc, char *func_name)
return (pc == handler || pc == handler + 4);
}
+static int
+insn_is_sigreturn (unsigned long pcinsn)
+{
+ switch(pcinsn)
+ {
+ case INSTR_LI_R0_0x6666:
+ case INSTR_LI_R0_0x7777:
+ case INSTR_LI_R0_NR_sigreturn:
+ case INSTR_LI_R0_NR_rt_sigreturn:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
/*
* The signal handler trampoline is on the stack and consists of exactly
* two instructions. The easiest and most accurate way of determining
pcinsn = extract_unsigned_integer (buf + 4, 4);
return (
- (pcinsn == INSTR_LI_R0_0x7777
+ (insn_is_sigreturn (pcinsn)
&& extract_unsigned_integer (buf + 8, 4) == INSTR_SC)
||
(pcinsn == INSTR_SC
- && extract_unsigned_integer (buf, 4) == INSTR_LI_R0_0x7777));
+ && insn_is_sigreturn (extract_unsigned_integer (buf, 4))));
}
-CORE_ADDR
+static CORE_ADDR
ppc_linux_skip_trampoline_code (CORE_ADDR pc)
{
char buf[4];
/* Get address of the relocation entry (Elf32_Rela) */
if (target_read_memory (plt_table + reloc_index, buf, 4) != 0)
return 0;
- reloc = extract_address (buf, 4);
+ reloc = extract_unsigned_integer (buf, 4);
sect = find_pc_section (reloc);
if (!sect)
/* This might not work right if we have multiple symbols with the
same name; the only way to really get it right is to perform
the same sort of lookup as the dynamic linker. */
- msymbol = lookup_minimal_symbol_text (symname, NULL, NULL);
+ msymbol = lookup_minimal_symbol_text (symname, NULL);
if (!msymbol)
return 0;
CORE_ADDR
ppc_linux_frame_saved_pc (struct frame_info *fi)
{
- if (fi->signal_handler_caller)
+ if ((get_frame_type (fi) == SIGTRAMP_FRAME))
{
CORE_ADDR regs_addr =
- read_memory_integer (fi->frame + PPC_LINUX_REGS_PTR_OFFSET, 4);
+ read_memory_integer (get_frame_base (fi)
+ + PPC_LINUX_REGS_PTR_OFFSET, 4);
/* return the NIP in the regs array */
return read_memory_integer (regs_addr + 4 * PPC_LINUX_PT_NIP, 4);
}
- else if (fi->next && fi->next->signal_handler_caller)
+ else if (get_next_frame (fi)
+ && (get_frame_type (get_next_frame (fi)) == SIGTRAMP_FRAME))
{
CORE_ADDR regs_addr =
- read_memory_integer (fi->next->frame + PPC_LINUX_REGS_PTR_OFFSET, 4);
+ read_memory_integer (get_frame_base (get_next_frame (fi))
+ + PPC_LINUX_REGS_PTR_OFFSET, 4);
/* return LNK in the regs array */
return read_memory_integer (regs_addr + 4 * PPC_LINUX_PT_LNK, 4);
}
{
rs6000_init_extra_frame_info (fromleaf, fi);
- if (fi->next != 0)
+ if (get_next_frame (fi) != 0)
{
/* We're called from get_prev_frame_info; check to see if
this is a signal frame by looking to see if the pc points
at trampoline code */
- if (ppc_linux_at_sigtramp_return_path (fi->pc))
- fi->signal_handler_caller = 1;
+ if (ppc_linux_at_sigtramp_return_path (get_frame_pc (fi)))
+ deprecated_set_frame_type (fi, SIGTRAMP_FRAME);
else
- fi->signal_handler_caller = 0;
+ /* FIXME: cagney/2002-11-10: Is this double bogus? What
+ happens if the frame has previously been marked as a dummy? */
+ deprecated_set_frame_type (fi, NORMAL_FRAME);
}
}
{
/* We'll find the wrong thing if we let
rs6000_frameless_function_invocation () search for a signal trampoline */
- if (ppc_linux_at_sigtramp_return_path (fi->pc))
+ if (ppc_linux_at_sigtramp_return_path (get_frame_pc (fi)))
return 0;
else
return rs6000_frameless_function_invocation (fi);
void
ppc_linux_frame_init_saved_regs (struct frame_info *fi)
{
- if (fi->signal_handler_caller)
+ if ((get_frame_type (fi) == SIGTRAMP_FRAME))
{
CORE_ADDR regs_addr;
int i;
- if (fi->saved_regs)
+ if (deprecated_get_frame_saved_regs (fi))
return;
frame_saved_regs_zalloc (fi);
regs_addr =
- read_memory_integer (fi->frame + PPC_LINUX_REGS_PTR_OFFSET, 4);
- fi->saved_regs[PC_REGNUM] = regs_addr + 4 * PPC_LINUX_PT_NIP;
- fi->saved_regs[gdbarch_tdep (current_gdbarch)->ppc_ps_regnum] =
+ read_memory_integer (get_frame_base (fi)
+ + PPC_LINUX_REGS_PTR_OFFSET, 4);
+ deprecated_get_frame_saved_regs (fi)[PC_REGNUM] = regs_addr + 4 * PPC_LINUX_PT_NIP;
+ deprecated_get_frame_saved_regs (fi)[gdbarch_tdep (current_gdbarch)->ppc_ps_regnum] =
regs_addr + 4 * PPC_LINUX_PT_MSR;
- fi->saved_regs[gdbarch_tdep (current_gdbarch)->ppc_cr_regnum] =
+ deprecated_get_frame_saved_regs (fi)[gdbarch_tdep (current_gdbarch)->ppc_cr_regnum] =
regs_addr + 4 * PPC_LINUX_PT_CCR;
- fi->saved_regs[gdbarch_tdep (current_gdbarch)->ppc_lr_regnum] =
+ deprecated_get_frame_saved_regs (fi)[gdbarch_tdep (current_gdbarch)->ppc_lr_regnum] =
regs_addr + 4 * PPC_LINUX_PT_LNK;
- fi->saved_regs[gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum] =
+ deprecated_get_frame_saved_regs (fi)[gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum] =
regs_addr + 4 * PPC_LINUX_PT_CTR;
- fi->saved_regs[gdbarch_tdep (current_gdbarch)->ppc_xer_regnum] =
+ deprecated_get_frame_saved_regs (fi)[gdbarch_tdep (current_gdbarch)->ppc_xer_regnum] =
regs_addr + 4 * PPC_LINUX_PT_XER;
- fi->saved_regs[gdbarch_tdep (current_gdbarch)->ppc_mq_regnum] =
+ deprecated_get_frame_saved_regs (fi)[gdbarch_tdep (current_gdbarch)->ppc_mq_regnum] =
regs_addr + 4 * PPC_LINUX_PT_MQ;
for (i = 0; i < 32; i++)
- fi->saved_regs[gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum + i] =
+ deprecated_get_frame_saved_regs (fi)[gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum + i] =
regs_addr + 4 * PPC_LINUX_PT_R0 + 4 * i;
for (i = 0; i < 32; i++)
- fi->saved_regs[FP0_REGNUM + i] = regs_addr + 4 * PPC_LINUX_PT_FPR0 + 8 * i;
+ deprecated_get_frame_saved_regs (fi)[FP0_REGNUM + i] = regs_addr + 4 * PPC_LINUX_PT_FPR0 + 8 * i;
}
else
rs6000_frame_init_saved_regs (fi);
ppc_linux_frame_chain (struct frame_info *thisframe)
{
/* Kernel properly constructs the frame chain for the handler */
- if (thisframe->signal_handler_caller)
- return read_memory_integer ((thisframe)->frame, 4);
+ if ((get_frame_type (thisframe) == SIGTRAMP_FRAME))
+ return read_memory_integer (get_frame_base (thisframe), 4);
else
return rs6000_frame_chain (thisframe);
}
return val;
}
+/* For historic reasons, PPC 32 GNU/Linux follows PowerOpen rather
+ than the 32 bit SYSV R4 ABI structure return convention - all
+ structures, no matter their size, are put in memory. Vectors,
+ which were added later, do get returned in a register though. */
+
+static enum return_value_convention
+ppc_linux_return_value (struct gdbarch *gdbarch, struct type *valtype,
+ struct regcache *regcache, void *readbuf,
+ const void *writebuf)
+{
+ if ((TYPE_CODE (valtype) == TYPE_CODE_STRUCT
+ || TYPE_CODE (valtype) == TYPE_CODE_UNION)
+ && !((TYPE_LENGTH (valtype) == 16 || TYPE_LENGTH (valtype) == 8)
+ && TYPE_VECTOR (valtype)))
+ return RETURN_VALUE_STRUCT_CONVENTION;
+ else
+ return ppc_sysv_abi_return_value (gdbarch, valtype, regcache, readbuf,
+ writebuf);
+}
+
/* Fetch (and possibly build) an appropriate link_map_offsets
structure for GNU/Linux PPC targets using the struct offsets
defined in link.h (but without actual reference to that file).
return lmp;
}
+
+/* Macros for matching instructions. Note that, since all the
+ operands are masked off before they're or-ed into the instruction,
+ you can use -1 to make masks. */
+
+#define insn_d(opcd, rts, ra, d) \
+ ((((opcd) & 0x3f) << 26) \
+ | (((rts) & 0x1f) << 21) \
+ | (((ra) & 0x1f) << 16) \
+ | ((d) & 0xffff))
+
+#define insn_ds(opcd, rts, ra, d, xo) \
+ ((((opcd) & 0x3f) << 26) \
+ | (((rts) & 0x1f) << 21) \
+ | (((ra) & 0x1f) << 16) \
+ | ((d) & 0xfffc) \
+ | ((xo) & 0x3))
+
+#define insn_xfx(opcd, rts, spr, xo) \
+ ((((opcd) & 0x3f) << 26) \
+ | (((rts) & 0x1f) << 21) \
+ | (((spr) & 0x1f) << 16) \
+ | (((spr) & 0x3e0) << 6) \
+ | (((xo) & 0x3ff) << 1))
+
+/* Read a PPC instruction from memory. PPC instructions are always
+ big-endian, no matter what endianness the program is running in, so
+ we can't use read_memory_integer or one of its friends here. */
+static unsigned int
+read_insn (CORE_ADDR pc)
+{
+ unsigned char buf[4];
+
+ read_memory (pc, buf, 4);
+ return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+}
+
+
+/* An instruction to match. */
+struct insn_pattern
+{
+ unsigned int mask; /* mask the insn with this... */
+ unsigned int data; /* ...and see if it matches this. */
+ int optional; /* If non-zero, this insn may be absent. */
+};
+
+/* Return non-zero if the instructions at PC match the series
+ described in PATTERN, or zero otherwise. PATTERN is an array of
+ 'struct insn_pattern' objects, terminated by an entry whose mask is
+ zero.
+
+ When the match is successful, fill INSN[i] with what PATTERN[i]
+ matched. If PATTERN[i] is optional, and the instruction wasn't
+ present, set INSN[i] to 0 (which is not a valid PPC instruction).
+ INSN should have as many elements as PATTERN. Note that, if
+ PATTERN contains optional instructions which aren't present in
+ memory, then INSN will have holes, so INSN[i] isn't necessarily the
+ i'th instruction in memory. */
+static int
+insns_match_pattern (CORE_ADDR pc,
+ struct insn_pattern *pattern,
+ unsigned int *insn)
+{
+ int i;
+
+ for (i = 0; pattern[i].mask; i++)
+ {
+ insn[i] = read_insn (pc);
+ if ((insn[i] & pattern[i].mask) == pattern[i].data)
+ pc += 4;
+ else if (pattern[i].optional)
+ insn[i] = 0;
+ else
+ return 0;
+ }
+
+ return 1;
+}
+
+
+/* Return the 'd' field of the d-form instruction INSN, properly
+ sign-extended. */
+static CORE_ADDR
+insn_d_field (unsigned int insn)
+{
+ return ((((CORE_ADDR) insn & 0xffff) ^ 0x8000) - 0x8000);
+}
+
+
+/* Return the 'ds' field of the ds-form instruction INSN, with the two
+ zero bits concatenated at the right, and properly
+ sign-extended. */
+static CORE_ADDR
+insn_ds_field (unsigned int insn)
+{
+ return ((((CORE_ADDR) insn & 0xfffc) ^ 0x8000) - 0x8000);
+}
+
+
+/* If DESC is the address of a 64-bit PowerPC GNU/Linux function
+ descriptor, return the descriptor's entry point. */
+static CORE_ADDR
+ppc64_desc_entry_point (CORE_ADDR desc)
+{
+ /* The first word of the descriptor is the entry point. */
+ return (CORE_ADDR) read_memory_unsigned_integer (desc, 8);
+}
+
+
+/* Pattern for the standard linkage function. These are built by
+ build_plt_stub in elf64-ppc.c, whose GLINK argument is always
+ zero. */
+static struct insn_pattern ppc64_standard_linkage[] =
+ {
+ /* addis r12, r2, <any> */
+ { insn_d (-1, -1, -1, 0), insn_d (15, 12, 2, 0), 0 },
+
+ /* std r2, 40(r1) */
+ { -1, insn_ds (62, 2, 1, 40, 0), 0 },
+
+ /* ld r11, <any>(r12) */
+ { insn_ds (-1, -1, -1, 0, -1), insn_ds (58, 11, 12, 0, 0), 0 },
+
+ /* addis r12, r12, 1 <optional> */
+ { insn_d (-1, -1, -1, -1), insn_d (15, 12, 2, 1), 1 },
+
+ /* ld r2, <any>(r12) */
+ { insn_ds (-1, -1, -1, 0, -1), insn_ds (58, 2, 12, 0, 0), 0 },
+
+ /* addis r12, r12, 1 <optional> */
+ { insn_d (-1, -1, -1, -1), insn_d (15, 12, 2, 1), 1 },
+
+ /* mtctr r11 */
+ { insn_xfx (-1, -1, -1, -1), insn_xfx (31, 11, 9, 467),
+ 0 },
+
+ /* ld r11, <any>(r12) */
+ { insn_ds (-1, -1, -1, 0, -1), insn_ds (58, 11, 12, 0, 0), 0 },
+
+ /* bctr */
+ { -1, 0x4e800420, 0 },
+
+ { 0, 0, 0 }
+ };
+#define PPC64_STANDARD_LINKAGE_LEN \
+ (sizeof (ppc64_standard_linkage) / sizeof (ppc64_standard_linkage[0]))
+
+
+/* Recognize a 64-bit PowerPC GNU/Linux linkage function --- what GDB
+ calls a "solib trampoline". */
+static int
+ppc64_in_solib_call_trampoline (CORE_ADDR pc, char *name)
+{
+ /* Detecting solib call trampolines on PPC64 GNU/Linux is a pain.
+
+ It's not specifically solib call trampolines that are the issue.
+ Any call from one function to another function that uses a
+ different TOC requires a trampoline, to save the caller's TOC
+ pointer and then load the callee's TOC. An executable or shared
+ library may have more than one TOC, so even intra-object calls
+ may require a trampoline. Since executable and shared libraries
+ will all have their own distinct TOCs, every inter-object call is
+ also an inter-TOC call, and requires a trampoline --- so "solib
+ call trampolines" are just a special case.
+
+ The 64-bit PowerPC GNU/Linux ABI calls these call trampolines
+ "linkage functions". Since they need to be near the functions
+ that call them, they all appear in .text, not in any special
+ section. The .plt section just contains an array of function
+ descriptors, from which the linkage functions load the callee's
+ entry point, TOC value, and environment pointer. So
+ in_plt_section is useless. The linkage functions don't have any
+ special linker symbols to name them, either.
+
+ The only way I can see to recognize them is to actually look at
+ their code. They're generated by ppc_build_one_stub and some
+ other functions in bfd/elf64-ppc.c, so that should show us all
+ the instruction sequences we need to recognize. */
+ unsigned int insn[PPC64_STANDARD_LINKAGE_LEN];
+
+ return insns_match_pattern (pc, ppc64_standard_linkage, insn);
+}
+
+
+/* When the dynamic linker is doing lazy symbol resolution, the first
+ call to a function in another object will go like this:
+
+ - The user's function calls the linkage function:
+
+ 100007c4: 4b ff fc d5 bl 10000498
+ 100007c8: e8 41 00 28 ld r2,40(r1)
+
+ - The linkage function loads the entry point (and other stuff) from
+ the function descriptor in the PLT, and jumps to it:
+
+ 10000498: 3d 82 00 00 addis r12,r2,0
+ 1000049c: f8 41 00 28 std r2,40(r1)
+ 100004a0: e9 6c 80 98 ld r11,-32616(r12)
+ 100004a4: e8 4c 80 a0 ld r2,-32608(r12)
+ 100004a8: 7d 69 03 a6 mtctr r11
+ 100004ac: e9 6c 80 a8 ld r11,-32600(r12)
+ 100004b0: 4e 80 04 20 bctr
+
+ - But since this is the first time that PLT entry has been used, it
+ sends control to its glink entry. That loads the number of the
+ PLT entry and jumps to the common glink0 code:
+
+ 10000c98: 38 00 00 00 li r0,0
+ 10000c9c: 4b ff ff dc b 10000c78
+
+ - The common glink0 code then transfers control to the dynamic
+ linker's fixup code:
+
+ 10000c78: e8 41 00 28 ld r2,40(r1)
+ 10000c7c: 3d 82 00 00 addis r12,r2,0
+ 10000c80: e9 6c 80 80 ld r11,-32640(r12)
+ 10000c84: e8 4c 80 88 ld r2,-32632(r12)
+ 10000c88: 7d 69 03 a6 mtctr r11
+ 10000c8c: e9 6c 80 90 ld r11,-32624(r12)
+ 10000c90: 4e 80 04 20 bctr
+
+ Eventually, this code will figure out how to skip all of this,
+ including the dynamic linker. At the moment, we just get through
+ the linkage function. */
+
+/* If the current thread is about to execute a series of instructions
+ at PC matching the ppc64_standard_linkage pattern, and INSN is the result
+ from that pattern match, return the code address to which the
+ standard linkage function will send them. (This doesn't deal with
+ dynamic linker lazy symbol resolution stubs.) */
+static CORE_ADDR
+ppc64_standard_linkage_target (CORE_ADDR pc, unsigned int *insn)
+{
+ struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
+
+ /* The address of the function descriptor this linkage function
+ references. */
+ CORE_ADDR desc
+ = ((CORE_ADDR) read_register (tdep->ppc_gp0_regnum + 2)
+ + (insn_d_field (insn[0]) << 16)
+ + insn_ds_field (insn[2]));
+
+ /* The first word of the descriptor is the entry point. Return that. */
+ return ppc64_desc_entry_point (desc);
+}
+
+
+/* Given that we've begun executing a call trampoline at PC, return
+ the entry point of the function the trampoline will go to. */
+static CORE_ADDR
+ppc64_skip_trampoline_code (CORE_ADDR pc)
+{
+ unsigned int ppc64_standard_linkage_insn[PPC64_STANDARD_LINKAGE_LEN];
+
+ if (insns_match_pattern (pc, ppc64_standard_linkage,
+ ppc64_standard_linkage_insn))
+ return ppc64_standard_linkage_target (pc, ppc64_standard_linkage_insn);
+ else
+ return 0;
+}
+
+
+/* Support for CONVERT_FROM_FUNC_PTR_ADDR (ARCH, ADDR, TARG) on PPC64
+ GNU/Linux.
+
+ Usually a function pointer's representation is simply the address
+ of the function. On GNU/Linux on the 64-bit PowerPC however, a
+ function pointer is represented by a pointer to a TOC entry. This
+ TOC entry contains three words, the first word is the address of
+ the function, the second word is the TOC pointer (r2), and the
+ third word is the static chain value. Throughout GDB it is
+ currently assumed that a function pointer contains the address of
+ the function, which is not easy to fix. In addition, the
+ conversion of a function address to a function pointer would
+ require allocation of a TOC entry in the inferior's memory space,
+ with all its drawbacks. To be able to call C++ virtual methods in
+ the inferior (which are called via function pointers),
+ find_function_addr uses this function to get the function address
+ from a function pointer. */
+
+/* If ADDR points at what is clearly a function descriptor, transform
+ it into the address of the corresponding function. Be
+ conservative, otherwize GDB will do the transformation on any
+ random addresses such as occures when there is no symbol table. */
+
+static CORE_ADDR
+ppc64_linux_convert_from_func_ptr_addr (struct gdbarch *gdbarch,
+ CORE_ADDR addr,
+ struct target_ops *targ)
+{
+ struct section_table *s = target_section_by_addr (targ, addr);
+
+ /* Check if ADDR points to a function descriptor. */
+ if (s && strcmp (s->the_bfd_section->name, ".opd") == 0)
+ return get_target_memory_unsigned (targ, addr, 8);
+
+ return addr;
+}
+
+
enum {
ELF_NGREG = 48,
ELF_NFPREG = 33,
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
- /* Until November 2001, gcc was not complying to the SYSV ABI for
- returning structures less than or equal to 8 bytes in size. It was
- returning everything in memory. When this was corrected, it wasn't
- fixed for native platforms. */
- set_gdbarch_use_struct_convention (gdbarch,
- ppc_sysv_abi_broken_use_struct_convention);
-
if (tdep->wordsize == 4)
{
+ /* Until November 2001, gcc did not comply with the 32 bit SysV
+ R4 ABI requirement that structures less than or equal to 8
+ bytes should be returned in registers. Instead GCC was using
+ the the AIX/PowerOpen ABI - everything returned in memory
+ (well ignoring vectors that is). When this was corrected, it
+ wasn't fixed for GNU/Linux native platform. Use the
+ PowerOpen struct convention. */
+ set_gdbarch_return_value (gdbarch, ppc_linux_return_value);
+
/* Note: kevinb/2002-04-12: See note in rs6000_gdbarch_init regarding
*_push_arguments(). The same remarks hold for the methods below. */
- set_gdbarch_frameless_function_invocation (gdbarch,
- ppc_linux_frameless_function_invocation);
- set_gdbarch_frame_chain (gdbarch, ppc_linux_frame_chain);
- set_gdbarch_frame_saved_pc (gdbarch, ppc_linux_frame_saved_pc);
+ set_gdbarch_deprecated_frameless_function_invocation (gdbarch, ppc_linux_frameless_function_invocation);
+ set_gdbarch_deprecated_frame_chain (gdbarch, ppc_linux_frame_chain);
+ set_gdbarch_deprecated_frame_saved_pc (gdbarch, ppc_linux_frame_saved_pc);
- set_gdbarch_frame_init_saved_regs (gdbarch,
+ set_gdbarch_deprecated_frame_init_saved_regs (gdbarch,
ppc_linux_frame_init_saved_regs);
- set_gdbarch_init_extra_frame_info (gdbarch,
+ set_gdbarch_deprecated_init_extra_frame_info (gdbarch,
ppc_linux_init_extra_frame_info);
set_gdbarch_memory_remove_breakpoint (gdbarch,
ppc_linux_memory_remove_breakpoint);
+ /* Shared library handling. */
+ set_gdbarch_in_solib_call_trampoline (gdbarch, in_plt_section);
+ set_gdbarch_skip_trampoline_code (gdbarch,
+ ppc_linux_skip_trampoline_code);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, ppc_linux_svr4_fetch_link_map_offsets);
}
+
+ if (tdep->wordsize == 8)
+ {
+ /* Handle PPC64 GNU/Linux function pointers (which are really
+ function descriptors). */
+ set_gdbarch_convert_from_func_ptr_addr
+ (gdbarch, ppc64_linux_convert_from_func_ptr_addr);
+
+ set_gdbarch_in_solib_call_trampoline
+ (gdbarch, ppc64_in_solib_call_trampoline);
+ set_gdbarch_skip_trampoline_code (gdbarch, ppc64_skip_trampoline_code);
+
+ /* PPC64 malloc's entry-point is called ".malloc". */
+ set_gdbarch_name_of_malloc (gdbarch, ".malloc");
+ }
}
void
_initialize_ppc_linux_tdep (void)
{
- gdbarch_register_osabi (bfd_arch_powerpc, GDB_OSABI_LINUX,
- ppc_linux_init_abi);
+ /* Register for all sub-familes of the POWER/PowerPC: 32-bit and
+ 64-bit PowerPC, and the older rs6k. */
+ gdbarch_register_osabi (bfd_arch_powerpc, bfd_mach_ppc, GDB_OSABI_LINUX,
+ ppc_linux_init_abi);
+ gdbarch_register_osabi (bfd_arch_powerpc, bfd_mach_ppc64, GDB_OSABI_LINUX,
+ ppc_linux_init_abi);
+ gdbarch_register_osabi (bfd_arch_rs6000, bfd_mach_rs6k, GDB_OSABI_LINUX,
+ ppc_linux_init_abi);
add_core_fns (&ppc_linux_regset_core_fns);
}
projects / deliverable / binutils-gdb.git / blobdiff