/* Target-dependent code for GDB, the GNU debugger.
- Copyright (C) 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright (C) 1986-2014 Free Software Foundation, Inc.
This file is part of GDB.
#include "osabi.h"
#include "regset.h"
#include "solib-svr4.h"
+#include "solib-spu.h"
+#include "solib.h"
+#include "solist.h"
#include "ppc-tdep.h"
+#include "ppc64-tdep.h"
#include "ppc-linux-tdep.h"
+#include "glibc-tdep.h"
#include "trad-frame.h"
#include "frame-unwind.h"
#include "tramp-frame.h"
+#include "observer.h"
+#include "auxv.h"
+#include "elf/common.h"
+#include "elf/ppc64.h"
+#include "exceptions.h"
+#include "arch-utils.h"
+#include "spu-tdep.h"
+#include "xml-syscall.h"
+#include "linux-tdep.h"
+
+#include "stap-probe.h"
+#include "ax.h"
+#include "ax-gdb.h"
+#include "cli/cli-utils.h"
+#include "parser-defs.h"
+#include "user-regs.h"
+#include <ctype.h>
+#include "elf-bfd.h" /* for elfcore_write_* */
#include "features/rs6000/powerpc-32l.c"
#include "features/rs6000/powerpc-altivec32l.c"
+#include "features/rs6000/powerpc-cell32l.c"
+#include "features/rs6000/powerpc-vsx32l.c"
+#include "features/rs6000/powerpc-isa205-32l.c"
+#include "features/rs6000/powerpc-isa205-altivec32l.c"
+#include "features/rs6000/powerpc-isa205-vsx32l.c"
#include "features/rs6000/powerpc-64l.c"
#include "features/rs6000/powerpc-altivec64l.c"
+#include "features/rs6000/powerpc-cell64l.c"
+#include "features/rs6000/powerpc-vsx64l.c"
+#include "features/rs6000/powerpc-isa205-64l.c"
+#include "features/rs6000/powerpc-isa205-altivec64l.c"
+#include "features/rs6000/powerpc-isa205-vsx64l.c"
#include "features/rs6000/powerpc-e500l.c"
-static CORE_ADDR
-ppc_linux_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
-{
- gdb_byte buf[4];
- struct obj_section *sect;
- struct objfile *objfile;
- unsigned long insn;
- CORE_ADDR plt_start = 0;
- CORE_ADDR symtab = 0;
- CORE_ADDR strtab = 0;
- int num_slots = -1;
- int reloc_index = -1;
- CORE_ADDR plt_table;
- CORE_ADDR reloc;
- CORE_ADDR sym;
- long symidx;
- char symname[1024];
- struct minimal_symbol *msymbol;
-
- /* Find the section pc is in; if not in .plt, try the default method. */
- sect = find_pc_section (pc);
- if (!sect || strcmp (sect->the_bfd_section->name, ".plt") != 0)
- return find_solib_trampoline_target (frame, pc);
-
- objfile = sect->objfile;
-
- /* Pick up the instruction at pc. It had better be of the
- form
- li r11, IDX
-
- where IDX is an index into the plt_table. */
-
- if (target_read_memory (pc, buf, 4) != 0)
- return 0;
- insn = extract_unsigned_integer (buf, 4);
-
- if ((insn & 0xffff0000) != 0x39600000 /* li r11, VAL */ )
- return 0;
-
- reloc_index = (insn << 16) >> 16;
-
- /* Find the objfile that pc is in and obtain the information
- necessary for finding the symbol name. */
- for (sect = objfile->sections; sect < objfile->sections_end; ++sect)
- {
- const char *secname = sect->the_bfd_section->name;
- if (strcmp (secname, ".plt") == 0)
- plt_start = sect->addr;
- else if (strcmp (secname, ".rela.plt") == 0)
- num_slots = ((int) sect->endaddr - (int) sect->addr) / 12;
- else if (strcmp (secname, ".dynsym") == 0)
- symtab = sect->addr;
- else if (strcmp (secname, ".dynstr") == 0)
- strtab = sect->addr;
- }
+/* Shared library operations for PowerPC-Linux. */
+static struct target_so_ops powerpc_so_ops;
- /* Make sure we have all the information we need. */
- if (plt_start == 0 || num_slots == -1 || symtab == 0 || strtab == 0)
- return 0;
-
- /* Compute the value of the plt table */
- plt_table = plt_start + 72 + 8 * num_slots;
-
- /* Get address of the relocation entry (Elf32_Rela) */
- if (target_read_memory (plt_table + reloc_index, buf, 4) != 0)
- return 0;
- reloc = extract_unsigned_integer (buf, 4);
-
- sect = find_pc_section (reloc);
- if (!sect)
- return 0;
-
- if (strcmp (sect->the_bfd_section->name, ".text") == 0)
- return reloc;
-
- /* Now get the r_info field which is the relocation type and symbol
- index. */
- if (target_read_memory (reloc + 4, buf, 4) != 0)
- return 0;
- symidx = extract_unsigned_integer (buf, 4);
-
- /* Shift out the relocation type leaving just the symbol index */
- /* symidx = ELF32_R_SYM(symidx); */
- symidx = symidx >> 8;
-
- /* compute the address of the symbol */
- sym = symtab + symidx * 4;
-
- /* Fetch the string table index */
- if (target_read_memory (sym, buf, 4) != 0)
- return 0;
- symidx = extract_unsigned_integer (buf, 4);
-
- /* Fetch the string; we don't know how long it is. Is it possible
- that the following will fail because we're trying to fetch too
- much? */
- if (target_read_memory (strtab + symidx, (gdb_byte *) symname,
- sizeof (symname)) != 0)
- return 0;
-
- /* 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);
- if (!msymbol)
- return 0;
-
- return SYMBOL_VALUE_ADDRESS (msymbol);
-}
+/* The syscall's XML filename for PPC and PPC64. */
+#define XML_SYSCALL_FILENAME_PPC "syscalls/ppc-linux.xml"
+#define XML_SYSCALL_FILENAME_PPC64 "syscalls/ppc64-linux.xml"
/* ppc_linux_memory_remove_breakpoints attempts to remove a breakpoint
in much the same fashion as memory_remove_breakpoint in mem-break.c,
Now we've hit the breakpoint at shr1. (The breakpoint was
reset from the PLT entry to the actual shr1 function after the
shared library was loaded.) Note that the PLT entry has been
- resolved to contain a branch that takes us directly to shr1.
+ resolved to contain a branch that takes us directly to shr1.
(The real one, not the PLT entry.)
(gdb) x/2i 0x100409d4
changed twice.
Now the problem should be obvious. GDB places a breakpoint (a
- trap instruction) on the zero value of the PLT entry for shr1.
+ trap instruction) on the zero value of the PLT entry for shr1.
Later on, after the shared library had been loaded and the PLT
initialized, GDB gets a signal indicating this fact and attempts
(as it always does when it stops) to remove all the breakpoints.
word) to be written back to the now initialized PLT entry thus
destroying a portion of the initialization that had occurred only a
short time ago. When execution continued, the zero word would be
- executed as an instruction an an illegal instruction trap was
+ executed as an instruction an illegal instruction trap was
generated instead. (0 is not a legal instruction.)
The fix for this problem was fairly straightforward. The function
that the latter does not is check to make sure that the breakpoint
location actually contains a breakpoint (trap instruction) prior
to attempting to write back the old contents. If it does contain
- a trap instruction, we allow the old contents to be written back.
+ a trap instruction, we allow the old contents to be written back.
Otherwise, we silently do nothing.
The big question is whether memory_remove_breakpoint () should be
else in the event that some other platform has similar needs with
regard to removing breakpoints in some potentially self modifying
code. */
-int
+static int
ppc_linux_memory_remove_breakpoint (struct gdbarch *gdbarch,
struct bp_target_info *bp_tgt)
{
/* If our breakpoint is no longer at the address, this means that the
program modified the code on us, so it is wrong to put back the
- old value */
+ old value. */
if (val == 0 && memcmp (bp, old_contents, bplen) == 0)
- val = target_write_memory (addr, bp_tgt->shadow_contents, bplen);
+ val = target_write_raw_memory (addr, bp_tgt->shadow_contents, bplen);
do_cleanups (cleanup);
return val;
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 *func_type,
+ppc_linux_return_value (struct gdbarch *gdbarch, struct value *function,
struct type *valtype, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
&& TYPE_VECTOR (valtype)))
return RETURN_VALUE_STRUCT_CONVENTION;
else
- return ppc_sysv_abi_return_value (gdbarch, func_type, valtype, regcache,
+ return ppc_sysv_abi_return_value (gdbarch, function, valtype, regcache,
readbuf, writebuf);
}
-/* 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)
+static struct core_regset_section ppc_linux_vsx_regset_sections[] =
{
- unsigned char buf[4];
-
- read_memory (pc, buf, 4);
- return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
-}
-
+ { ".reg", 48 * 4, "general-purpose" },
+ { ".reg2", 264, "floating-point" },
+ { ".reg-ppc-vmx", 544, "ppc Altivec" },
+ { ".reg-ppc-vsx", 256, "POWER7 VSX" },
+ { NULL, 0}
+};
-/* An instruction to match. */
-struct insn_pattern
+static struct core_regset_section ppc_linux_vmx_regset_sections[] =
{
- 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. */
+ { ".reg", 48 * 4, "general-purpose" },
+ { ".reg2", 264, "floating-point" },
+ { ".reg-ppc-vmx", 544, "ppc Altivec" },
+ { NULL, 0}
};
-/* 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)
+static struct core_regset_section ppc_linux_fp_regset_sections[] =
{
- 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;
-}
-
+ { ".reg", 48 * 4, "general-purpose" },
+ { ".reg2", 264, "floating-point" },
+ { NULL, 0}
+};
-/* Return the 'd' field of the d-form instruction INSN, properly
- sign-extended. */
-static CORE_ADDR
-insn_d_field (unsigned int insn)
+static struct core_regset_section ppc64_linux_vsx_regset_sections[] =
{
- return ((((CORE_ADDR) insn & 0xffff) ^ 0x8000) - 0x8000);
-}
-
+ { ".reg", 48 * 8, "general-purpose" },
+ { ".reg2", 264, "floating-point" },
+ { ".reg-ppc-vmx", 544, "ppc Altivec" },
+ { ".reg-ppc-vsx", 256, "POWER7 VSX" },
+ { NULL, 0}
+};
-/* 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)
+static struct core_regset_section ppc64_linux_vmx_regset_sections[] =
{
- return ((((CORE_ADDR) insn & 0xfffc) ^ 0x8000) - 0x8000);
-}
-
+ { ".reg", 48 * 8, "general-purpose" },
+ { ".reg2", 264, "floating-point" },
+ { ".reg-ppc-vmx", 544, "ppc Altivec" },
+ { NULL, 0}
+};
-/* 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)
+static struct core_regset_section ppc64_linux_fp_regset_sections[] =
{
- /* The first word of the descriptor is the entry point. */
- return (CORE_ADDR) read_memory_unsigned_integer (desc, 8);
-}
-
+ { ".reg", 48 * 8, "general-purpose" },
+ { ".reg2", 264, "floating-point" },
+ { NULL, 0}
+};
-/* 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[] =
+/* PLT stub in executable. */
+static struct ppc_insn_pattern powerpc32_plt_stub[] =
{
- /* 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 },
+ { 0xffff0000, 0x3d600000, 0 }, /* lis r11, xxxx */
+ { 0xffff0000, 0x816b0000, 0 }, /* lwz r11, xxxx(r11) */
+ { 0xffffffff, 0x7d6903a6, 0 }, /* mtctr r11 */
+ { 0xffffffff, 0x4e800420, 0 }, /* bctr */
+ { 0, 0, 0 }
+ };
- { 0, 0, 0 }
+/* PLT stub in shared library. */
+static struct ppc_insn_pattern powerpc32_plt_stub_so[] =
+ {
+ { 0xffff0000, 0x817e0000, 0 }, /* lwz r11, xxxx(r30) */
+ { 0xffffffff, 0x7d6903a6, 0 }, /* mtctr r11 */
+ { 0xffffffff, 0x4e800420, 0 }, /* bctr */
+ { 0xffffffff, 0x60000000, 0 }, /* nop */
+ { 0, 0, 0 }
};
-#define PPC64_STANDARD_LINKAGE_LEN \
- (sizeof (ppc64_standard_linkage) / sizeof (ppc64_standard_linkage[0]))
-
-/* 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 (struct frame_info *frame,
- CORE_ADDR pc, unsigned int *insn)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (get_frame_arch (frame));
-
- /* The address of the function descriptor this linkage function
- references. */
- CORE_ADDR desc
- = ((CORE_ADDR) get_frame_register_unsigned (frame,
- 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);
-}
+#define POWERPC32_PLT_STUB_LEN ARRAY_SIZE (powerpc32_plt_stub)
+/* Check if PC is in PLT stub. For non-secure PLT, stub is in .plt
+ section. For secure PLT, stub is in .text and we need to check
+ instruction patterns. */
-/* 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 (struct frame_info *frame, CORE_ADDR pc)
+static int
+powerpc_linux_in_dynsym_resolve_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 (frame, pc,
- ppc64_standard_linkage_insn);
- else
- return 0;
+ struct bound_minimal_symbol sym;
+
+ /* Check whether PC is in the dynamic linker. This also checks
+ whether it is in the .plt section, used by non-PIC executables. */
+ if (svr4_in_dynsym_resolve_code (pc))
+ return 1;
+
+ /* Check if we are in the resolver. */
+ sym = lookup_minimal_symbol_by_pc (pc);
+ if (sym.minsym != NULL
+ && (strcmp (MSYMBOL_LINKAGE_NAME (sym.minsym), "__glink") == 0
+ || strcmp (MSYMBOL_LINKAGE_NAME (sym.minsym),
+ "__glink_PLTresolve") == 0))
+ return 1;
+
+ return 0;
}
-
-/* Support for convert_from_func_ptr_addr (ARCH, ADDR, TARG) on PPC
- GNU/Linux.
-
- Usually a function pointer's representation is simply the address
- of the function. On GNU/Linux on the PowerPC however, a function
- pointer may be a pointer to a function descriptor.
-
- For PPC64, a function descriptor is a TOC entry, in a data section,
- which 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.
-
- For PPC32, there are two kinds of function pointers: non-secure and
- secure. Non-secure function pointers point directly to the
- function in a code section and thus need no translation. Secure
- ones (from GCC's -msecure-plt option) are in a data section and
- contain one word: the address of the function.
-
- 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, if needed. Be
- conservative, otherwise GDB will do the transformation on any
- random addresses such as occur when there is no symbol table. */
+/* Follow PLT stub to actual routine. */
static CORE_ADDR
-ppc_linux_convert_from_func_ptr_addr (struct gdbarch *gdbarch,
- CORE_ADDR addr,
- struct target_ops *targ)
+ppc_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
{
- struct gdbarch_tdep *tdep;
- struct section_table *s = target_section_by_addr (targ, addr);
- char *sect_name = NULL;
-
- if (!s)
- return addr;
-
- tdep = gdbarch_tdep (gdbarch);
+ unsigned int insnbuf[POWERPC32_PLT_STUB_LEN];
+ struct gdbarch *gdbarch = get_frame_arch (frame);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ CORE_ADDR target = 0;
- switch (tdep->wordsize)
+ if (ppc_insns_match_pattern (frame, pc, powerpc32_plt_stub, insnbuf))
{
- case 4:
- sect_name = ".plt";
- break;
- case 8:
- sect_name = ".opd";
- break;
- default:
- internal_error (__FILE__, __LINE__,
- _("failed internal consistency check"));
+ /* Insn pattern is
+ lis r11, xxxx
+ lwz r11, xxxx(r11)
+ Branch target is in r11. */
+
+ target = (ppc_insn_d_field (insnbuf[0]) << 16)
+ | ppc_insn_d_field (insnbuf[1]);
+ target = read_memory_unsigned_integer (target, 4, byte_order);
}
- /* Check if ADDR points to a function descriptor. */
+ if (ppc_insns_match_pattern (frame, pc, powerpc32_plt_stub_so, insnbuf))
+ {
+ /* Insn pattern is
+ lwz r11, xxxx(r30)
+ Branch target is in r11. */
- /* NOTE: this depends on the coincidence that the address of a functions
- entry point is contained in the first word of its function descriptor
- for both PPC-64 and for PPC-32 with secure PLTs. */
- if ((strcmp (s->the_bfd_section->name, sect_name) == 0)
- && s->the_bfd_section->flags & SEC_DATA)
- return get_target_memory_unsigned (targ, addr, tdep->wordsize);
+ target = get_frame_register_unsigned (frame, tdep->ppc_gp0_regnum + 30)
+ + ppc_insn_d_field (insnbuf[0]);
+ target = read_memory_unsigned_integer (target, 4, byte_order);
+ }
- return addr;
+ return target;
}
/* Wrappers to handle Linux-only registers. */
NULL
};
+static const struct regset ppc32_linux_vsxregset = {
+ &ppc32_linux_reg_offsets,
+ ppc_supply_vsxregset,
+ ppc_collect_vsxregset,
+ NULL
+};
+
const struct regset *
ppc_linux_gregset (int wordsize)
{
return &ppc32_linux_fpregset;
if (strcmp (sect_name, ".reg-ppc-vmx") == 0)
return &ppc32_linux_vrregset;
+ if (strcmp (sect_name, ".reg-ppc-vsx") == 0)
+ return &ppc32_linux_vsxregset;
return NULL;
}
int i;
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
base = get_frame_register_unsigned (this_frame,
gdbarch_sp_regnum (gdbarch));
regs = base + offset;
/* Use that to find the address of the corresponding register
buffers. */
- gpregs = read_memory_unsigned_integer (regs, tdep->wordsize);
+ gpregs = read_memory_unsigned_integer (regs, tdep->wordsize, byte_order);
fpregs = gpregs + 48 * tdep->wordsize;
/* General purpose. */
for (i = 0; i < 32; i++)
{
int regnum = i + tdep->ppc_gp0_regnum;
- trad_frame_set_reg_addr (this_cache, regnum, gpregs + i * tdep->wordsize);
+ trad_frame_set_reg_addr (this_cache,
+ regnum, gpregs + i * tdep->wordsize);
}
trad_frame_set_reg_addr (this_cache,
gdbarch_pc_regnum (gdbarch),
};
+/* Address to use for displaced stepping. When debugging a stand-alone
+ SPU executable, entry_point_address () will point to an SPU local-store
+ address and is thus not usable as displaced stepping location. We use
+ the auxiliary vector to determine the PowerPC-side entry point address
+ instead. */
+
+static CORE_ADDR ppc_linux_entry_point_addr = 0;
+
+static void
+ppc_linux_inferior_created (struct target_ops *target, int from_tty)
+{
+ ppc_linux_entry_point_addr = 0;
+}
+
+static CORE_ADDR
+ppc_linux_displaced_step_location (struct gdbarch *gdbarch)
+{
+ if (ppc_linux_entry_point_addr == 0)
+ {
+ CORE_ADDR addr;
+
+ /* Determine entry point from target auxiliary vector. */
+ if (target_auxv_search (¤t_target, AT_ENTRY, &addr) <= 0)
+ error (_("Cannot find AT_ENTRY auxiliary vector entry."));
+
+ /* Make certain that the address points at real code, and not a
+ function descriptor. */
+ addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
+ ¤t_target);
+
+ /* Inferior calls also use the entry point as a breakpoint location.
+ We don't want displaced stepping to interfere with those
+ breakpoints, so leave space. */
+ ppc_linux_entry_point_addr = addr + 2 * PPC_INSN_SIZE;
+ }
+
+ return ppc_linux_entry_point_addr;
+}
+
+
/* Return 1 if PPC_ORIG_R3_REGNUM and PPC_TRAP_REGNUM are usable. */
int
ppc_linux_trap_reg_p (struct gdbarch *gdbarch)
&& register_size (gdbarch, PPC_TRAP_REGNUM) > 0;
}
+/* Return the current system call's number present in the
+ r0 register. When the function fails, it returns -1. */
+static LONGEST
+ppc_linux_get_syscall_number (struct gdbarch *gdbarch,
+ ptid_t ptid)
+{
+ struct regcache *regcache = get_thread_regcache (ptid);
+ struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ struct cleanup *cleanbuf;
+ /* The content of a register */
+ gdb_byte *buf;
+ /* The result */
+ LONGEST ret;
+
+ /* Make sure we're in a 32- or 64-bit machine */
+ gdb_assert (tdep->wordsize == 4 || tdep->wordsize == 8);
+
+ buf = (gdb_byte *) xmalloc (tdep->wordsize * sizeof (gdb_byte));
+
+ cleanbuf = make_cleanup (xfree, buf);
+
+ /* Getting the system call number from the register.
+ When dealing with PowerPC architecture, this information
+ is stored at 0th register. */
+ regcache_cooked_read (regcache, tdep->ppc_gp0_regnum, buf);
+
+ ret = extract_signed_integer (buf, tdep->wordsize, byte_order);
+ do_cleanups (cleanbuf);
+
+ return ret;
+}
+
static void
ppc_linux_write_pc (struct regcache *regcache, CORE_ADDR pc)
{
regcache_cooked_write_unsigned (regcache, PPC_TRAP_REGNUM, -1);
}
+static int
+ppc_linux_spu_section (bfd *abfd, asection *asect, void *user_data)
+{
+ return strncmp (bfd_section_name (abfd, asect), "SPU/", 4) == 0;
+}
+
static const struct target_desc *
ppc_linux_core_read_description (struct gdbarch *gdbarch,
struct target_ops *target,
bfd *abfd)
{
+ asection *cell = bfd_sections_find_if (abfd, ppc_linux_spu_section, NULL);
asection *altivec = bfd_get_section_by_name (abfd, ".reg-ppc-vmx");
+ asection *vsx = bfd_get_section_by_name (abfd, ".reg-ppc-vsx");
asection *section = bfd_get_section_by_name (abfd, ".reg");
if (! section)
return NULL;
switch (bfd_section_size (abfd, section))
{
case 48 * 4:
- return altivec? tdesc_powerpc_altivec32l : tdesc_powerpc_32l;
+ if (cell)
+ return tdesc_powerpc_cell32l;
+ else if (vsx)
+ return tdesc_powerpc_vsx32l;
+ else if (altivec)
+ return tdesc_powerpc_altivec32l;
+ else
+ return tdesc_powerpc_32l;
case 48 * 8:
- return altivec? tdesc_powerpc_altivec64l : tdesc_powerpc_64l;
+ if (cell)
+ return tdesc_powerpc_cell64l;
+ else if (vsx)
+ return tdesc_powerpc_vsx64l;
+ else if (altivec)
+ return tdesc_powerpc_altivec64l;
+ else
+ return tdesc_powerpc_64l;
default:
return NULL;
}
}
+
+/* Implementation of `gdbarch_elf_make_msymbol_special', as defined in
+ gdbarch.h. This implementation is used for the ELFv2 ABI only. */
+
+static void
+ppc_elfv2_elf_make_msymbol_special (asymbol *sym, struct minimal_symbol *msym)
+{
+ elf_symbol_type *elf_sym = (elf_symbol_type *)sym;
+
+ /* If the symbol is marked as having a local entry point, set a target
+ flag in the msymbol. We currently only support local entry point
+ offsets of 8 bytes, which is the only entry point offset ever used
+ by current compilers. If/when other offsets are ever used, we will
+ have to use additional target flag bits to store them. */
+ switch (PPC64_LOCAL_ENTRY_OFFSET (elf_sym->internal_elf_sym.st_other))
+ {
+ default:
+ break;
+ case 8:
+ MSYMBOL_TARGET_FLAG_1 (msym) = 1;
+ break;
+ }
+}
+
+/* Implementation of `gdbarch_skip_entrypoint', as defined in
+ gdbarch.h. This implementation is used for the ELFv2 ABI only. */
+
+static CORE_ADDR
+ppc_elfv2_skip_entrypoint (struct gdbarch *gdbarch, CORE_ADDR pc)
+{
+ struct bound_minimal_symbol fun;
+ int local_entry_offset = 0;
+
+ fun = lookup_minimal_symbol_by_pc (pc);
+ if (fun.minsym == NULL)
+ return pc;
+
+ /* See ppc_elfv2_elf_make_msymbol_special for how local entry point
+ offset values are encoded. */
+ if (MSYMBOL_TARGET_FLAG_1 (fun.minsym))
+ local_entry_offset = 8;
+
+ if (MSYMBOL_VALUE_ADDRESS (fun.minsym) <= pc
+ && pc < MSYMBOL_VALUE_ADDRESS (fun.minsym) + local_entry_offset)
+ return MSYMBOL_VALUE_ADDRESS (fun.minsym) + local_entry_offset;
+
+ return pc;
+}
+
+/* Implementation of `gdbarch_stap_is_single_operand', as defined in
+ gdbarch.h. */
+
+static int
+ppc_stap_is_single_operand (struct gdbarch *gdbarch, const char *s)
+{
+ return (*s == 'i' /* Literal number. */
+ || (isdigit (*s) && s[1] == '('
+ && isdigit (s[2])) /* Displacement. */
+ || (*s == '(' && isdigit (s[1])) /* Register indirection. */
+ || isdigit (*s)); /* Register value. */
+}
+
+/* Implementation of `gdbarch_stap_parse_special_token', as defined in
+ gdbarch.h. */
+
+static int
+ppc_stap_parse_special_token (struct gdbarch *gdbarch,
+ struct stap_parse_info *p)
+{
+ if (isdigit (*p->arg))
+ {
+ /* This temporary pointer is needed because we have to do a lookahead.
+ We could be dealing with a register displacement, and in such case
+ we would not need to do anything. */
+ const char *s = p->arg;
+ char *regname;
+ int len;
+ struct stoken str;
+
+ while (isdigit (*s))
+ ++s;
+
+ if (*s == '(')
+ {
+ /* It is a register displacement indeed. Returning 0 means we are
+ deferring the treatment of this case to the generic parser. */
+ return 0;
+ }
+
+ len = s - p->arg;
+ regname = alloca (len + 2);
+ regname[0] = 'r';
+
+ strncpy (regname + 1, p->arg, len);
+ ++len;
+ regname[len] = '\0';
+
+ if (user_reg_map_name_to_regnum (gdbarch, regname, len) == -1)
+ error (_("Invalid register name `%s' on expression `%s'."),
+ regname, p->saved_arg);
+
+ write_exp_elt_opcode (OP_REGISTER);
+ str.ptr = regname;
+ str.length = len;
+ write_exp_string (str);
+ write_exp_elt_opcode (OP_REGISTER);
+
+ p->arg = s;
+ }
+ else
+ {
+ /* All the other tokens should be handled correctly by the generic
+ parser. */
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Cell/B.E. active SPE context tracking support. */
+
+static struct objfile *spe_context_objfile = NULL;
+static CORE_ADDR spe_context_lm_addr = 0;
+static CORE_ADDR spe_context_offset = 0;
+
+static ptid_t spe_context_cache_ptid;
+static CORE_ADDR spe_context_cache_address;
+
+/* Hook into inferior_created, solib_loaded, and solib_unloaded observers
+ to track whether we've loaded a version of libspe2 (as static or dynamic
+ library) that provides the __spe_current_active_context variable. */
+static void
+ppc_linux_spe_context_lookup (struct objfile *objfile)
+{
+ struct bound_minimal_symbol sym;
+
+ if (!objfile)
+ {
+ spe_context_objfile = NULL;
+ spe_context_lm_addr = 0;
+ spe_context_offset = 0;
+ spe_context_cache_ptid = minus_one_ptid;
+ spe_context_cache_address = 0;
+ return;
+ }
+
+ sym = lookup_minimal_symbol ("__spe_current_active_context", NULL, objfile);
+ if (sym.minsym)
+ {
+ spe_context_objfile = objfile;
+ spe_context_lm_addr = svr4_fetch_objfile_link_map (objfile);
+ spe_context_offset = MSYMBOL_VALUE_ADDRESS (sym.minsym);
+ spe_context_cache_ptid = minus_one_ptid;
+ spe_context_cache_address = 0;
+ return;
+ }
+}
+
+static void
+ppc_linux_spe_context_inferior_created (struct target_ops *t, int from_tty)
+{
+ struct objfile *objfile;
+
+ ppc_linux_spe_context_lookup (NULL);
+ ALL_OBJFILES (objfile)
+ ppc_linux_spe_context_lookup (objfile);
+}
+
+static void
+ppc_linux_spe_context_solib_loaded (struct so_list *so)
+{
+ if (strstr (so->so_original_name, "/libspe") != NULL)
+ {
+ solib_read_symbols (so, 0);
+ ppc_linux_spe_context_lookup (so->objfile);
+ }
+}
+
+static void
+ppc_linux_spe_context_solib_unloaded (struct so_list *so)
+{
+ if (so->objfile == spe_context_objfile)
+ ppc_linux_spe_context_lookup (NULL);
+}
+
+/* Retrieve contents of the N'th element in the current thread's
+ linked SPE context list into ID and NPC. Return the address of
+ said context element, or 0 if not found. */
+static CORE_ADDR
+ppc_linux_spe_context (int wordsize, enum bfd_endian byte_order,
+ int n, int *id, unsigned int *npc)
+{
+ CORE_ADDR spe_context = 0;
+ gdb_byte buf[16];
+ int i;
+
+ /* Quick exit if we have not found __spe_current_active_context. */
+ if (!spe_context_objfile)
+ return 0;
+
+ /* Look up cached address of thread-local variable. */
+ if (!ptid_equal (spe_context_cache_ptid, inferior_ptid))
+ {
+ struct target_ops *target = ¤t_target;
+ volatile struct gdb_exception ex;
+
+ while (target && !target->to_get_thread_local_address)
+ target = find_target_beneath (target);
+ if (!target)
+ return 0;
+
+ TRY_CATCH (ex, RETURN_MASK_ERROR)
+ {
+ /* We do not call target_translate_tls_address here, because
+ svr4_fetch_objfile_link_map may invalidate the frame chain,
+ which must not do while inside a frame sniffer.
+
+ Instead, we have cached the lm_addr value, and use that to
+ directly call the target's to_get_thread_local_address. */
+ spe_context_cache_address
+ = target->to_get_thread_local_address (target, inferior_ptid,
+ spe_context_lm_addr,
+ spe_context_offset);
+ spe_context_cache_ptid = inferior_ptid;
+ }
+
+ if (ex.reason < 0)
+ return 0;
+ }
+
+ /* Read variable value. */
+ if (target_read_memory (spe_context_cache_address, buf, wordsize) == 0)
+ spe_context = extract_unsigned_integer (buf, wordsize, byte_order);
+
+ /* Cyle through to N'th linked list element. */
+ for (i = 0; i < n && spe_context; i++)
+ if (target_read_memory (spe_context + align_up (12, wordsize),
+ buf, wordsize) == 0)
+ spe_context = extract_unsigned_integer (buf, wordsize, byte_order);
+ else
+ spe_context = 0;
+
+ /* Read current context. */
+ if (spe_context
+ && target_read_memory (spe_context, buf, 12) != 0)
+ spe_context = 0;
+
+ /* Extract data elements. */
+ if (spe_context)
+ {
+ if (id)
+ *id = extract_signed_integer (buf, 4, byte_order);
+ if (npc)
+ *npc = extract_unsigned_integer (buf + 4, 4, byte_order);
+ }
+
+ return spe_context;
+}
+
+
+/* Cell/B.E. cross-architecture unwinder support. */
+
+struct ppu2spu_cache
+{
+ struct frame_id frame_id;
+ struct regcache *regcache;
+};
+
+static struct gdbarch *
+ppu2spu_prev_arch (struct frame_info *this_frame, void **this_cache)
+{
+ struct ppu2spu_cache *cache = *this_cache;
+ return get_regcache_arch (cache->regcache);
+}
+
+static void
+ppu2spu_this_id (struct frame_info *this_frame,
+ void **this_cache, struct frame_id *this_id)
+{
+ struct ppu2spu_cache *cache = *this_cache;
+ *this_id = cache->frame_id;
+}
+
+static struct value *
+ppu2spu_prev_register (struct frame_info *this_frame,
+ void **this_cache, int regnum)
+{
+ struct ppu2spu_cache *cache = *this_cache;
+ struct gdbarch *gdbarch = get_regcache_arch (cache->regcache);
+ gdb_byte *buf;
+
+ buf = alloca (register_size (gdbarch, regnum));
+
+ if (regnum < gdbarch_num_regs (gdbarch))
+ regcache_raw_read (cache->regcache, regnum, buf);
+ else
+ gdbarch_pseudo_register_read (gdbarch, cache->regcache, regnum, buf);
+
+ return frame_unwind_got_bytes (this_frame, regnum, buf);
+}
+
+struct ppu2spu_data
+{
+ struct gdbarch *gdbarch;
+ int id;
+ unsigned int npc;
+ gdb_byte gprs[128*16];
+};
+
+static int
+ppu2spu_unwind_register (void *src, int regnum, gdb_byte *buf)
+{
+ struct ppu2spu_data *data = src;
+ enum bfd_endian byte_order = gdbarch_byte_order (data->gdbarch);
+
+ if (regnum >= 0 && regnum < SPU_NUM_GPRS)
+ memcpy (buf, data->gprs + 16*regnum, 16);
+ else if (regnum == SPU_ID_REGNUM)
+ store_unsigned_integer (buf, 4, byte_order, data->id);
+ else if (regnum == SPU_PC_REGNUM)
+ store_unsigned_integer (buf, 4, byte_order, data->npc);
+ else
+ return REG_UNAVAILABLE;
+
+ return REG_VALID;
+}
+
+static int
+ppu2spu_sniffer (const struct frame_unwind *self,
+ struct frame_info *this_frame, void **this_prologue_cache)
+{
+ 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 ppu2spu_data data;
+ struct frame_info *fi;
+ CORE_ADDR base, func, backchain, spe_context;
+ gdb_byte buf[8];
+ int n = 0;
+
+ /* Count the number of SPU contexts already in the frame chain. */
+ for (fi = get_next_frame (this_frame); fi; fi = get_next_frame (fi))
+ if (get_frame_type (fi) == ARCH_FRAME
+ && gdbarch_bfd_arch_info (get_frame_arch (fi))->arch == bfd_arch_spu)
+ n++;
+
+ base = get_frame_sp (this_frame);
+ func = get_frame_pc (this_frame);
+ if (target_read_memory (base, buf, tdep->wordsize))
+ return 0;
+ backchain = extract_unsigned_integer (buf, tdep->wordsize, byte_order);
+
+ spe_context = ppc_linux_spe_context (tdep->wordsize, byte_order,
+ n, &data.id, &data.npc);
+ if (spe_context && base <= spe_context && spe_context < backchain)
+ {
+ char annex[32];
+
+ /* Find gdbarch for SPU. */
+ struct gdbarch_info info;
+ gdbarch_info_init (&info);
+ info.bfd_arch_info = bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu);
+ info.byte_order = BFD_ENDIAN_BIG;
+ info.osabi = GDB_OSABI_LINUX;
+ info.tdep_info = (void *) &data.id;
+ data.gdbarch = gdbarch_find_by_info (info);
+ if (!data.gdbarch)
+ return 0;
+
+ xsnprintf (annex, sizeof annex, "%d/regs", data.id);
+ if (target_read (¤t_target, TARGET_OBJECT_SPU, annex,
+ data.gprs, 0, sizeof data.gprs)
+ == sizeof data.gprs)
+ {
+ struct ppu2spu_cache *cache
+ = FRAME_OBSTACK_CALLOC (1, struct ppu2spu_cache);
+
+ struct address_space *aspace = get_frame_address_space (this_frame);
+ struct regcache *regcache = regcache_xmalloc (data.gdbarch, aspace);
+ struct cleanup *cleanups = make_cleanup_regcache_xfree (regcache);
+ regcache_save (regcache, ppu2spu_unwind_register, &data);
+ discard_cleanups (cleanups);
+
+ cache->frame_id = frame_id_build (base, func);
+ cache->regcache = regcache;
+ *this_prologue_cache = cache;
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static void
+ppu2spu_dealloc_cache (struct frame_info *self, void *this_cache)
+{
+ struct ppu2spu_cache *cache = this_cache;
+ regcache_xfree (cache->regcache);
+}
+
+static const struct frame_unwind ppu2spu_unwind = {
+ ARCH_FRAME,
+ default_frame_unwind_stop_reason,
+ ppu2spu_this_id,
+ ppu2spu_prev_register,
+ NULL,
+ ppu2spu_sniffer,
+ ppu2spu_dealloc_cache,
+ ppu2spu_prev_arch,
+};
+
+
static void
ppc_linux_init_abi (struct gdbarch_info info,
struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
struct tdesc_arch_data *tdesc_data = (void *) info.tdep_info;
+ static const char *const stap_integer_prefixes[] = { "i", NULL };
+ static const char *const stap_register_indirection_prefixes[] = { "(",
+ NULL };
+ static const char *const stap_register_indirection_suffixes[] = { ")",
+ NULL };
+
+ linux_init_abi (info, gdbarch);
/* PPC GNU/Linux uses either 64-bit or 128-bit long doubles; where
128-bit, they are IBM long double, not IEEE quad long double as
set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT);
set_gdbarch_long_double_format (gdbarch, floatformats_ibm_long_double);
- /* Handle PPC GNU/Linux 64-bit function pointers (which are really
- function descriptors) and 32-bit secure PLT entries. */
- set_gdbarch_convert_from_func_ptr_addr
- (gdbarch, ppc_linux_convert_from_func_ptr_addr);
-
/* Handle inferior calls during interrupted system calls. */
set_gdbarch_write_pc (gdbarch, ppc_linux_write_pc);
+ /* Get the syscall number from the arch's register. */
+ set_gdbarch_get_syscall_number (gdbarch, ppc_linux_get_syscall_number);
+
+ /* SystemTap functions. */
+ set_gdbarch_stap_integer_prefixes (gdbarch, stap_integer_prefixes);
+ set_gdbarch_stap_register_indirection_prefixes (gdbarch,
+ stap_register_indirection_prefixes);
+ set_gdbarch_stap_register_indirection_suffixes (gdbarch,
+ stap_register_indirection_suffixes);
+ set_gdbarch_stap_gdb_register_prefix (gdbarch, "r");
+ set_gdbarch_stap_is_single_operand (gdbarch, ppc_stap_is_single_operand);
+ set_gdbarch_stap_parse_special_token (gdbarch,
+ ppc_stap_parse_special_token);
+
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
+ 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. */
ppc_linux_memory_remove_breakpoint);
/* Shared library handling. */
- set_gdbarch_skip_trampoline_code (gdbarch,
- ppc_linux_skip_trampoline_code);
+ set_gdbarch_skip_trampoline_code (gdbarch, ppc_skip_trampoline_code);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
+ /* Setting the correct XML syscall filename. */
+ set_xml_syscall_file_name (XML_SYSCALL_FILENAME_PPC);
+
/* Trampolines. */
- tramp_frame_prepend_unwinder (gdbarch, &ppc32_linux_sigaction_tramp_frame);
- tramp_frame_prepend_unwinder (gdbarch, &ppc32_linux_sighandler_tramp_frame);
+ tramp_frame_prepend_unwinder (gdbarch,
+ &ppc32_linux_sigaction_tramp_frame);
+ tramp_frame_prepend_unwinder (gdbarch,
+ &ppc32_linux_sighandler_tramp_frame);
+
+ /* BFD target for core files. */
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
+ set_gdbarch_gcore_bfd_target (gdbarch, "elf32-powerpcle");
+ else
+ set_gdbarch_gcore_bfd_target (gdbarch, "elf32-powerpc");
+
+ /* Supported register sections. */
+ if (tdesc_find_feature (info.target_desc,
+ "org.gnu.gdb.power.vsx"))
+ set_gdbarch_core_regset_sections (gdbarch,
+ ppc_linux_vsx_regset_sections);
+ else if (tdesc_find_feature (info.target_desc,
+ "org.gnu.gdb.power.altivec"))
+ set_gdbarch_core_regset_sections (gdbarch,
+ ppc_linux_vmx_regset_sections);
+ else
+ set_gdbarch_core_regset_sections (gdbarch,
+ ppc_linux_fp_regset_sections);
+
+ if (powerpc_so_ops.in_dynsym_resolve_code == NULL)
+ {
+ powerpc_so_ops = svr4_so_ops;
+ /* Override dynamic resolve function. */
+ powerpc_so_ops.in_dynsym_resolve_code =
+ powerpc_linux_in_dynsym_resolve_code;
+ }
+ set_solib_ops (gdbarch, &powerpc_so_ops);
+
+ set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver);
}
if (tdep->wordsize == 8)
{
- /* Handle the 64-bit SVR4 minimal-symbol convention of using "FN"
- for the descriptor and ".FN" for the entry-point -- a user
- specifying "break FN" will unexpectedly end up with a breakpoint
- on the descriptor and not the function. This architecture method
- transforms any breakpoints on descriptors into breakpoints on the
- corresponding entry point. */
- set_gdbarch_adjust_breakpoint_address
- (gdbarch, ppc64_sysv_abi_adjust_breakpoint_address);
+ if (tdep->elf_abi == POWERPC_ELF_V1)
+ {
+ /* Handle PPC GNU/Linux 64-bit function pointers (which are really
+ function descriptors). */
+ set_gdbarch_convert_from_func_ptr_addr
+ (gdbarch, ppc64_convert_from_func_ptr_addr);
+
+ set_gdbarch_elf_make_msymbol_special
+ (gdbarch, ppc64_elf_make_msymbol_special);
+ }
+ else
+ {
+ set_gdbarch_elf_make_msymbol_special
+ (gdbarch, ppc_elfv2_elf_make_msymbol_special);
+
+ set_gdbarch_skip_entrypoint (gdbarch, ppc_elfv2_skip_entrypoint);
+ }
/* Shared library handling. */
set_gdbarch_skip_trampoline_code (gdbarch, ppc64_skip_trampoline_code);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_lp64_fetch_link_map_offsets);
+ /* Setting the correct XML syscall filename. */
+ set_xml_syscall_file_name (XML_SYSCALL_FILENAME_PPC64);
+
/* Trampolines. */
- tramp_frame_prepend_unwinder (gdbarch, &ppc64_linux_sigaction_tramp_frame);
- tramp_frame_prepend_unwinder (gdbarch, &ppc64_linux_sighandler_tramp_frame);
+ tramp_frame_prepend_unwinder (gdbarch,
+ &ppc64_linux_sigaction_tramp_frame);
+ tramp_frame_prepend_unwinder (gdbarch,
+ &ppc64_linux_sighandler_tramp_frame);
+
+ /* BFD target for core files. */
+ if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_LITTLE)
+ set_gdbarch_gcore_bfd_target (gdbarch, "elf64-powerpcle");
+ else
+ set_gdbarch_gcore_bfd_target (gdbarch, "elf64-powerpc");
+
+ /* Supported register sections. */
+ if (tdesc_find_feature (info.target_desc,
+ "org.gnu.gdb.power.vsx"))
+ set_gdbarch_core_regset_sections (gdbarch,
+ ppc64_linux_vsx_regset_sections);
+ else if (tdesc_find_feature (info.target_desc,
+ "org.gnu.gdb.power.altivec"))
+ set_gdbarch_core_regset_sections (gdbarch,
+ ppc64_linux_vmx_regset_sections);
+ else
+ set_gdbarch_core_regset_sections (gdbarch,
+ ppc64_linux_fp_regset_sections);
}
- set_gdbarch_regset_from_core_section (gdbarch, ppc_linux_regset_from_core_section);
+
+ /* PPC32 uses a different prpsinfo32 compared to most other Linux
+ archs. */
+ if (tdep->wordsize == 4)
+ set_gdbarch_elfcore_write_linux_prpsinfo (gdbarch,
+ elfcore_write_ppc_linux_prpsinfo32);
+
+ set_gdbarch_regset_from_core_section (gdbarch,
+ ppc_linux_regset_from_core_section);
set_gdbarch_core_read_description (gdbarch, ppc_linux_core_read_description);
/* Enable TLS support. */
PPC_TRAP_REGNUM, "trap");
}
}
+
+ /* Enable Cell/B.E. if supported by the target. */
+ if (tdesc_compatible_p (info.target_desc,
+ bfd_lookup_arch (bfd_arch_spu, bfd_mach_spu)))
+ {
+ /* Cell/B.E. multi-architecture support. */
+ set_spu_solib_ops (gdbarch);
+
+ /* Cell/B.E. cross-architecture unwinder support. */
+ frame_unwind_prepend_unwinder (gdbarch, &ppu2spu_unwind);
+
+ /* The default displaced_step_at_entry_point doesn't work for
+ SPU stand-alone executables. */
+ set_gdbarch_displaced_step_location (gdbarch,
+ ppc_linux_displaced_step_location);
+ }
+
+ set_gdbarch_get_siginfo_type (gdbarch, linux_get_siginfo_type);
}
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_ppc_linux_tdep;
+
void
_initialize_ppc_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_rs6000, bfd_mach_rs6k, GDB_OSABI_LINUX,
ppc_linux_init_abi);
+ /* Attach to inferior_created observer. */
+ observer_attach_inferior_created (ppc_linux_inferior_created);
+
+ /* Attach to observers to track __spe_current_active_context. */
+ observer_attach_inferior_created (ppc_linux_spe_context_inferior_created);
+ observer_attach_solib_loaded (ppc_linux_spe_context_solib_loaded);
+ observer_attach_solib_unloaded (ppc_linux_spe_context_solib_unloaded);
+
/* Initialize the Linux target descriptions. */
initialize_tdesc_powerpc_32l ();
initialize_tdesc_powerpc_altivec32l ();
+ initialize_tdesc_powerpc_cell32l ();
+ initialize_tdesc_powerpc_vsx32l ();
+ initialize_tdesc_powerpc_isa205_32l ();
+ initialize_tdesc_powerpc_isa205_altivec32l ();
+ initialize_tdesc_powerpc_isa205_vsx32l ();
initialize_tdesc_powerpc_64l ();
initialize_tdesc_powerpc_altivec64l ();
+ initialize_tdesc_powerpc_cell64l ();
+ initialize_tdesc_powerpc_vsx64l ();
+ initialize_tdesc_powerpc_isa205_64l ();
+ initialize_tdesc_powerpc_isa205_altivec64l ();
+ initialize_tdesc_powerpc_isa205_vsx64l ();
initialize_tdesc_powerpc_e500l ();
}
projects / deliverable / binutils-gdb.git / blobdiff