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* config/i386/i386sol2.mt (TDEPFILES): Add i386-sol2-tdep.o and

Browse Source 
i386bsd-tdep.o.  Remove solib.o, solib-svr4.o and solib-legacy.o.
Move these to ...
* config/i386/i386sol2.mh: ... here.
* config/i386/tm-i386sol2.h (STAB_REG_TO_REGNUM): Remove define.
(sigtramp_saved_pc, I386V4_SIGTRAMP_SAVED_PC): Don't #undef.
(SIGCONTEXT_PC_OFFSET): Remove define.
(IN_SIGTRAMP): Remove define.
* i386-sol2-tdep.c: New file.

* config/i386/i386nw.mt (TM_FILE): Change to tm-i386.h.
* config/i386/tm-i386nw.h: Removed.

* config/i386/tm-fbsd.h (STAB_REG_TO_REGNUM,
USE_STRUCT_CONVENTION): Remove defines.
(JB_ELEMENT_SIZE, JB_PC, GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
(IN_SIGTRAMP): Remove define.
(i386bsd_in_sigtramp): Remove prototype.
(i386bsd_sigtramp_start, i386bsd_sigtramp_end): Turn into a
function.  Update comment accordingly
(SIGTRAMP_START, SIGTRAMP): Adjust definition accordingly.
(FRAME_SAVED_PC): Remove define.
(i386bsd_frame_saved_pc): Remove prototype.
* config/i386/tm-nbsd.h (JB_ELEMENT_SIZE, JB_PC,
GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
(IN_SIGTRAMP): Remove define.
(i386bsd_in_sigtramp): Remove prototype.
(i386bsd_sigtramp_start, i386bsd_sigtramp_end): Turn into a
function.  Update comment accordingly
(SIGTRAMP_START, SIGTRAMP): Adjust definition accordingly.
(FRAME_SAVED_PC): Remove define.
(i386bsd_frame_saved_pc): Remove prototype.
* config/i386/tm-nbsdaout.h (i386nbsd_aout_use_struct_convention):
Remove prototype.
(USE_STRUCT_CONVENTION): Remove prototype.
* i386bsd-nat.c (i386bsd_sigcontext_pc_offset): Remove
declaration.
(_initialize_i386bsd_nat): Revise logic to determine some
constants at compile time when compiling a native GDB.  Warn if
things don't match up with what we expect.
* i386bsd-tdep.c (i386bsd_sigtramp_start, i386bsd_sigtramp_end):
Remove variables.
(i386bsd_in_sigtramp): Rename tp i386bsd_pc_in_sigtramp.  Rewrite
to use date stored in `struct gdbarch_tdep'.
(i386bsd_sigcontext_offset): Remove varaible.
(i386bsd_sigtramp_saved_pc): Make public.  Rewrite to use data
stored in `struct gdbarch_tdep'.
(i386bsd_frame_saved_pc): Make static.
(i386bsd_sigtramp_start, i386bsd_sigtramp_end): New functions.
(i386bsd_sc_pc_offset, i386nbsd_sc_pc_offset,
i386fbsd_sigtramp_start, i386fbsd_sigtramp_end,
i386fbsd4_sc_pc_offset): New variables.
(i386bsd_init_abi, i386nbsd_init_abi, i386nbsdelf_init_abi,
i386fbsdaout_init_abi, i386fbsd_init_abi, i386fbsd4_init_abi): New
functions.
(i386bsd_aout_osabi_sniffer, _initialize_i386bsd_tdep): New
functions.
* i386fbsd-nat.c (_initialize_i386fbsd_nat): Fix type in comment.
Modify the value of i386fbsd_sigtramp_start and
i386fbsd_sigtramp_end instead of i386bsd_sigtramp_start and
i386fbsd_sigtramp_end.
* i386nbsd-tdep.c: (i386nbsd_aout_use_struct_convention): Remove
function.

* config/i386/tm-linux.h (I386_LINUX_ORIG_EAX_REGNUM): Move
define to i386-linux-tdep.h.
(NUM_REGS, MAX_NUM_REGS, REGISTER_BYTES, REGISTER_NAME,
REGISTER_BYTE, REGISTER_RAW_SIZE, STAB_REG_TO_REGNUM): Remove
defines.
(i386_linux_register_name, i386_linux_register_byte,
i386_linux_register_raw_size): Remove prototypes.
(i386_linux_svr4_fetch_link_map_offsets): Remove prototype.
(SVR4_FETCH_LINK_MAP_OFFSETS): Remove define.
(IN_SIGTRAMP, FRAME_CHAIN, FRAME_SAVED_PC, SAVED_PC_AFTER_CALL,
TARGET_WRITE_PC): Remove defines.
(i386_linux_in_sigtramp, i386_linux_frame_chain,
i386_linux_frame_saved_pc, i386_linux_saved_pc_after_call,
i386_linux_write_pc): Remove prototypes.
(JB_ELEMENT_SIZE, JB_PC, GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
* i386-linux-tdep.h: New file.
* i386-linux-nat.c: Include "i386-linux-tdep.h".
* i386-linux-tdep.c: Include "i386-tdep.h" and
"i386-linux-tdep.h".
(i386_linux_register_name, i386_linux_register_byte,
i386_linux_register_raw_size, i386_linux_in_sigtramp,
i386_linux_write_pc, i386_linux_svr4_fetch_link_map_offsets):
Make static.
(i386_linux_init_abi): New function.
(_initialize_i386_linux_tdep): New function.

* config/i386/tm-i386.h (SAVED_PC_AFTER_CALL): Remove define.
(i386_saved_pc_after_call): Remove prototype.
(MAX_NUM_REGS): Increase to deal with Linux's orig_eax "register".
(REGISTER_NAME, STAB_REG_TO_REGNUM, SDB_REG_TO_REGNUM,
DWARF_REG_TO_REGNUM, DWARF2_REG_TO_REGNUM): Remove defines.
(i386_register_name, i386_stab_reg_to_regnum,
i386_dwarf_reg_to_regnum): Remove prototypes.
(SIZEOF_GREGS, SIZEOF_FPU_REGS, SIZEOF_FPU_CTL_REGS,
SIZEOF_SSE_REGS): Remove defines.
(REGISTER_BYTES): Remove define.
(REGISTER_BYTE, REGISTER_RAW_SIZE): Remove defines.
(i386_register_byte, i386_register_raw_size): Remove prototypes.
(FRAME_CHAIN, FRAME_SAVED_PC): Remove defines.
(i386_frame_chain, i386_frame_saved_pc): Remove prototypes.
* config/i386/tm-i386v4.h (FRAME_CHAIN_VALID): Remove define.
(JB_ELEMENT_SIZE, JB_PC, JB_EBX, JB_ESI, JB_EDI, JB_EBP, JB_ESP,
JB_EDX, GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
(I386V4_SIGTRAMP_SAVED_PC, IN_SIGTRAMP): Remove defines.
(sigtramp_saved_pc): Remove define.
(i386v4_sigtramp_saved_pc): Remove prototype.
* config/i386/tm-go32.h (FRAME_CHAIN,
FRAMELESS_FUNCTION_INVOCATION, FRAME_SAVED_PC): Remove defines.
(i386go32_frame_saved_pc): Remove prototype.
(JB_ELEMENT_SIZE, JB_PC, GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
* i386-tdep.h: Include "osabi.h".
(enum i386_abi): Removed.
(enum struct_return): New enum.
(struct gdbarch_tdep): Remove abi member, add osabi, jb_pc_offset,
struct_return, sigtramp_saved_pc, sigtramp_start, sigtramp_end and
sc_pc_offset members.
(i386_gdbarch_register_os_abi): Remove prototype.
(I386_NUM_GREGS, I386_NUM_FREGS, I386_NUM_XREGS,
I386_SSE_NUM_REGS): New defines.
(I386_SIZEOF_GREGS, I386_SIZEOF_FREGS, I386_SIZEOF_XREGS,
I386_SSE_SIZEOF_REGS): New defines.
(i386_register_name, i386_register_byte, i386_register_raw_size):
New prototypes.
(i386_elf_init_abi, i386_svr4_init_abi): New prototypes.
(i386bsd_sigtramp_saved_pc): New prototype.
* i386-tdep.c: Don't include "elf-bfd.h".
(i386_stab_reg_to_regnum, i386_dwarf_reg_to_regnum,
i386_frame_chain, i386_saved_pc_after_call): Make static.
(i386_frame_saved_pc): Rewrite to call architecture dependent
function to deal with signal handlers.  Make static.
(i386go32_frame_saved_pc): Removed.
[GET_LONGJMP_TARGET] (JB_PC, JB_ELEMENT_SIZE, get_longjmp_target):
Removed.
(i386_get_longjmp_target): New function.
(default_struct_convention, pcc_struct_convention,
reg_struct_convention, valid_conventions, struct_convention): New
variables.
(i386_use_struct_convention): New function.
(i386v4_sigtramp_saved_pc): Renamed to
i386_svr4_sigtramp_saved_pc.  Made static.  Moved.
(i386_pc_in_sigtramp): New function.
(i386_abi_names): Removed.
(ABI_TAG_OS_GNU_LINUX, ABI_TAG_OS_GNU_HURD,
ABI_TAG_OS_GNU_SOLARIS, ABI_TAG_OS_FREEBSD, ABI_TAG_OS_NETBSD):
Removed.
(process_note_sections, i386_elf_abi_from_note, i386_elf_abi,
i386_gdbarch_register_os_abi): Removed.
(struct i386_abi_handler): Removed.
(i386_abi_handler_list): Removed.
(i386_svr4_pc_in_sigtramp, i386_go32_pc_in_sigtramp): New
functions.
(i386_elf_init_abi, i386_svr4_init_abi, i386_go32_init_abi,
i386_nw_init_abi): New functions.
(i386_gdbarch_init): Rewritten to use generic OS ABI framework.
Use set_gdbarch_xxx() calls instead of relying on macros for a
number of calls.
(i386_coff_osabi_sniffer, i386_nlm_osabi_sniffer): New functions.
(_initialize_i386_tdep): Add new 'struct-convcention' command.
Register the various architecture variants defined in this file.
This commit is contained in:
Mark Kettenis 2002-06-14 19:42:20 +00:00
parent e7e8118132
commit 8201327c40
22 changed files with 868 additions and 754 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

171
gdb/ChangeLog
View File

@ -1,3 +1,174 @@
2002-06-14 Mark Kettenis <kettenis@gnu.org>
* config/i386/i386sol2.mt (TDEPFILES): Add i386-sol2-tdep.o and
i386bsd-tdep.o. Remove solib.o, solib-svr4.o and solib-legacy.o.
Move these to ...
* config/i386/i386sol2.mh: ... here.
* config/i386/tm-i386sol2.h (STAB_REG_TO_REGNUM): Remove define.
(sigtramp_saved_pc, I386V4_SIGTRAMP_SAVED_PC): Don't #undef.
(SIGCONTEXT_PC_OFFSET): Remove define.
(IN_SIGTRAMP): Remove define.
* i386-sol2-tdep.c: New file.
* config/i386/i386nw.mt (TM_FILE): Change to tm-i386.h.
* config/i386/tm-i386nw.h: Removed.
* config/i386/tm-fbsd.h (STAB_REG_TO_REGNUM,
USE_STRUCT_CONVENTION): Remove defines.
(JB_ELEMENT_SIZE, JB_PC, GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
(IN_SIGTRAMP): Remove define.
(i386bsd_in_sigtramp): Remove prototype.
(i386bsd_sigtramp_start, i386bsd_sigtramp_end): Turn into a
function. Update comment accordingly
(SIGTRAMP_START, SIGTRAMP): Adjust definition accordingly.
(FRAME_SAVED_PC): Remove define.
(i386bsd_frame_saved_pc): Remove prototype.
* config/i386/tm-nbsd.h (JB_ELEMENT_SIZE, JB_PC,
GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
(IN_SIGTRAMP): Remove define.
(i386bsd_in_sigtramp): Remove prototype.
(i386bsd_sigtramp_start, i386bsd_sigtramp_end): Turn into a
function. Update comment accordingly
(SIGTRAMP_START, SIGTRAMP): Adjust definition accordingly.
(FRAME_SAVED_PC): Remove define.
(i386bsd_frame_saved_pc): Remove prototype.
* config/i386/tm-nbsdaout.h (i386nbsd_aout_use_struct_convention):
Remove prototype.
(USE_STRUCT_CONVENTION): Remove prototype.
* i386bsd-nat.c (i386bsd_sigcontext_pc_offset): Remove
declaration.
(_initialize_i386bsd_nat): Revise logic to determine some
constants at compile time when compiling a native GDB. Warn if
things don't match up with what we expect.
* i386bsd-tdep.c (i386bsd_sigtramp_start, i386bsd_sigtramp_end):
Remove variables.
(i386bsd_in_sigtramp): Rename tp i386bsd_pc_in_sigtramp. Rewrite
to use date stored in `struct gdbarch_tdep'.
(i386bsd_sigcontext_offset): Remove varaible.
(i386bsd_sigtramp_saved_pc): Make public. Rewrite to use data
stored in `struct gdbarch_tdep'.
(i386bsd_frame_saved_pc): Make static.
(i386bsd_sigtramp_start, i386bsd_sigtramp_end): New functions.
(i386bsd_sc_pc_offset, i386nbsd_sc_pc_offset,
i386fbsd_sigtramp_start, i386fbsd_sigtramp_end,
i386fbsd4_sc_pc_offset): New variables.
(i386bsd_init_abi, i386nbsd_init_abi, i386nbsdelf_init_abi,
i386fbsdaout_init_abi, i386fbsd_init_abi, i386fbsd4_init_abi): New
functions.
(i386bsd_aout_osabi_sniffer, _initialize_i386bsd_tdep): New
functions.
* i386fbsd-nat.c (_initialize_i386fbsd_nat): Fix type in comment.
Modify the value of i386fbsd_sigtramp_start and
i386fbsd_sigtramp_end instead of i386bsd_sigtramp_start and
i386fbsd_sigtramp_end.
* i386nbsd-tdep.c: (i386nbsd_aout_use_struct_convention): Remove
function.
* config/i386/tm-linux.h (I386_LINUX_ORIG_EAX_REGNUM): Move
define to i386-linux-tdep.h.
(NUM_REGS, MAX_NUM_REGS, REGISTER_BYTES, REGISTER_NAME,
REGISTER_BYTE, REGISTER_RAW_SIZE, STAB_REG_TO_REGNUM): Remove
defines.
(i386_linux_register_name, i386_linux_register_byte,
i386_linux_register_raw_size): Remove prototypes.
(i386_linux_svr4_fetch_link_map_offsets): Remove prototype.
(SVR4_FETCH_LINK_MAP_OFFSETS): Remove define.
(IN_SIGTRAMP, FRAME_CHAIN, FRAME_SAVED_PC, SAVED_PC_AFTER_CALL,
TARGET_WRITE_PC): Remove defines.
(i386_linux_in_sigtramp, i386_linux_frame_chain,
i386_linux_frame_saved_pc, i386_linux_saved_pc_after_call,
i386_linux_write_pc): Remove prototypes.
(JB_ELEMENT_SIZE, JB_PC, GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
* i386-linux-tdep.h: New file.
* i386-linux-nat.c: Include "i386-linux-tdep.h".
* i386-linux-tdep.c: Include "i386-tdep.h" and
"i386-linux-tdep.h".
(i386_linux_register_name, i386_linux_register_byte,
i386_linux_register_raw_size, i386_linux_in_sigtramp,
i386_linux_write_pc, i386_linux_svr4_fetch_link_map_offsets):
Make static.
(i386_linux_init_abi): New function.
(_initialize_i386_linux_tdep): New function.
* config/i386/tm-i386.h (SAVED_PC_AFTER_CALL): Remove define.
(i386_saved_pc_after_call): Remove prototype.
(MAX_NUM_REGS): Increase to deal with Linux's orig_eax "register".
(REGISTER_NAME, STAB_REG_TO_REGNUM, SDB_REG_TO_REGNUM,
DWARF_REG_TO_REGNUM, DWARF2_REG_TO_REGNUM): Remove defines.
(i386_register_name, i386_stab_reg_to_regnum,
i386_dwarf_reg_to_regnum): Remove prototypes.
(SIZEOF_GREGS, SIZEOF_FPU_REGS, SIZEOF_FPU_CTL_REGS,
SIZEOF_SSE_REGS): Remove defines.
(REGISTER_BYTES): Remove define.
(REGISTER_BYTE, REGISTER_RAW_SIZE): Remove defines.
(i386_register_byte, i386_register_raw_size): Remove prototypes.
(FRAME_CHAIN, FRAME_SAVED_PC): Remove defines.
(i386_frame_chain, i386_frame_saved_pc): Remove prototypes.
* config/i386/tm-i386v4.h (FRAME_CHAIN_VALID): Remove define.
(JB_ELEMENT_SIZE, JB_PC, JB_EBX, JB_ESI, JB_EDI, JB_EBP, JB_ESP,
JB_EDX, GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
(I386V4_SIGTRAMP_SAVED_PC, IN_SIGTRAMP): Remove defines.
(sigtramp_saved_pc): Remove define.
(i386v4_sigtramp_saved_pc): Remove prototype.
* config/i386/tm-go32.h (FRAME_CHAIN,
FRAMELESS_FUNCTION_INVOCATION, FRAME_SAVED_PC): Remove defines.
(i386go32_frame_saved_pc): Remove prototype.
(JB_ELEMENT_SIZE, JB_PC, GET_LONGJMP_TARGET): Remove defines.
(get_longjmp_target): Remove prototype.
* i386-tdep.h: Include "osabi.h".
(enum i386_abi): Removed.
(enum struct_return): New enum.
(struct gdbarch_tdep): Remove abi member, add osabi, jb_pc_offset,
struct_return, sigtramp_saved_pc, sigtramp_start, sigtramp_end and
sc_pc_offset members.
(i386_gdbarch_register_os_abi): Remove prototype.
(I386_NUM_GREGS, I386_NUM_FREGS, I386_NUM_XREGS,
I386_SSE_NUM_REGS): New defines.
(I386_SIZEOF_GREGS, I386_SIZEOF_FREGS, I386_SIZEOF_XREGS,
I386_SSE_SIZEOF_REGS): New defines.
(i386_register_name, i386_register_byte, i386_register_raw_size):
New prototypes.
(i386_elf_init_abi, i386_svr4_init_abi): New prototypes.
(i386bsd_sigtramp_saved_pc): New prototype.
* i386-tdep.c: Don't include "elf-bfd.h".
(i386_stab_reg_to_regnum, i386_dwarf_reg_to_regnum,
i386_frame_chain, i386_saved_pc_after_call): Make static.
(i386_frame_saved_pc): Rewrite to call architecture dependent
function to deal with signal handlers. Make static.
(i386go32_frame_saved_pc): Removed.
[GET_LONGJMP_TARGET] (JB_PC, JB_ELEMENT_SIZE, get_longjmp_target):
Removed.
(i386_get_longjmp_target): New function.
(default_struct_convention, pcc_struct_convention,
reg_struct_convention, valid_conventions, struct_convention): New
variables.
(i386_use_struct_convention): New function.
(i386v4_sigtramp_saved_pc): Renamed to
i386_svr4_sigtramp_saved_pc. Made static. Moved.
(i386_pc_in_sigtramp): New function.
(i386_abi_names): Removed.
(ABI_TAG_OS_GNU_LINUX, ABI_TAG_OS_GNU_HURD,
ABI_TAG_OS_GNU_SOLARIS, ABI_TAG_OS_FREEBSD, ABI_TAG_OS_NETBSD):
Removed.
(process_note_sections, i386_elf_abi_from_note, i386_elf_abi,
i386_gdbarch_register_os_abi): Removed.
(struct i386_abi_handler): Removed.
(i386_abi_handler_list): Removed.
(i386_svr4_pc_in_sigtramp, i386_go32_pc_in_sigtramp): New
functions.
(i386_elf_init_abi, i386_svr4_init_abi, i386_go32_init_abi,
i386_nw_init_abi): New functions.
(i386_gdbarch_init): Rewritten to use generic OS ABI framework.
Use set_gdbarch_xxx() calls instead of relying on macros for a
number of calls.
(i386_coff_osabi_sniffer, i386_nlm_osabi_sniffer): New functions.
(_initialize_i386_tdep): Add new 'struct-convcention' command.
Register the various architecture variants defined in this file.
2002-06-14 Daniel Jacobowitz <drow@mvista.com>
* gdbtypes.h (TYPE_FLAG_VARARGS): Update comment.

2
gdb/config/i386/i386nw.mt
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@ -1,3 +1,3 @@
# Target: Intel 386 running NetWare
TDEPFILES= i386-tdep.o i387-tdep.o
TM_FILE= tm-i386nw.h
TM_FILE= tm-i386.h

3
gdb/config/i386/i386sol2.mh
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@ -5,4 +5,5 @@ XM_CLIBS= -lsocket -lnsl
NAT_FILE= nm-i386sol2.h
NATDEPFILES= core-regset.o fork-child.o i386v4-nat.o corelow.o \
procfs.o proc-api.o proc-events.o proc-flags.o proc-why.o gcore.o
procfs.o proc-api.o proc-events.o proc-flags.o proc-why.o gcore.o \
solib.o solib-svr4.o solib-legacy.o

4
gdb/config/i386/i386sol2.mt
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@ -1,3 +1,3 @@
# Target: Intel 386 running SVR4
TDEPFILES= i386-tdep.o i387-tdep.o solib.o solib-svr4.o solib-legacy.o
# Target: Intel 386 running Solaris 2 (SVR4)
TDEPFILES= i386-tdep.o i387-tdep.o i386-sol2-tdep.o i386bsd-tdep.o
TM_FILE= tm-i386sol2.h

53
gdb/config/i386/tm-fbsd.h
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@ -24,56 +24,17 @@
#define HAVE_I387_REGS
#include "i386/tm-i386.h"
/* FreeBSD/ELF uses stabs-in-ELF with the DWARF register numbering
scheme by default, so we must redefine STAB_REG_TO_REGNUM. This
messes up the floating-point registers for a.out, but there is not
much we can do about that. */
#undef STAB_REG_TO_REGNUM
#define STAB_REG_TO_REGNUM(reg) i386_dwarf_reg_to_regnum ((reg))
/* FreeBSD uses the old gcc convention for struct returns. */
#define USE_STRUCT_CONVENTION(gcc_p, type) \
generic_use_struct_convention (1, type)
/* Support for longjmp. */
/* Details about jmp_buf. It's supposed to be an array of integers. */
#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */
#define JB_PC 0 /* Array index of saved PC. */
/* Figure out where the longjmp will land. Store the address that
longjmp will jump to in *ADDR, and return non-zero if successful. */
#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
extern int get_longjmp_target (CORE_ADDR *addr);
/* Support for signal handlers. */
#define IN_SIGTRAMP(pc, name) i386bsd_in_sigtramp (pc, name)
extern int i386bsd_in_sigtramp (CORE_ADDR pc, char *name);
/* These defines allow the recognition of sigtramps as a function name
<sigtramp>.
FIXME: kettenis/2001-07-13: These should be added to the target
vector and turned into functions when we go "multi-arch". */
FIXME: kettenis/2002-05-12: Of course these defines will have to go
if we go truly "multi-arch", but I don't know yet how to get rid of
them. */
#define SIGTRAMP_START(pc) i386bsd_sigtramp_start
#define SIGTRAMP_END(pc) i386bsd_sigtramp_end
extern CORE_ADDR i386bsd_sigtramp_start;
extern CORE_ADDR i386bsd_sigtramp_end;
/* Override FRAME_SAVED_PC to enable the recognition of signal handlers. */
#undef FRAME_SAVED_PC
#define FRAME_SAVED_PC(frame) i386bsd_frame_saved_pc (frame)
extern CORE_ADDR i386bsd_frame_saved_pc (struct frame_info *frame);
#define SIGTRAMP_START(pc) i386bsd_sigtramp_start (pc)
#define SIGTRAMP_END(pc) i386bsd_sigtramp_end (pc)
extern CORE_ADDR i386bsd_sigtramp_start (CORE_ADDR pc);
extern CORE_ADDR i386bsd_sigtramp_end (CORE_ADDR pc);
/* Shared library support. */

39
gdb/config/i386/tm-go32.h
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@ -26,43 +26,4 @@
#include "i386/tm-i386.h"
/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
chain-pointer.
In the case of the i386, the frame's nominal address
is the address of a 4-byte word containing the calling frame's address.
DJGPP doesn't have any special frames for signal handlers, they are
just normal C functions. */
#undef FRAME_CHAIN
#define FRAME_CHAIN(thisframe) \
(!inside_entry_file ((thisframe)->pc) ? \
read_memory_integer ((thisframe)->frame, 4) :\
0)
/* A macro that tells us whether the function invocation represented
by FI does not have a frame on the stack associated with it. If it
does not, FRAMELESS is set to 1, else 0. */
#undef FRAMELESS_FUNCTION_INVOCATION
#define FRAMELESS_FUNCTION_INVOCATION(FI) \
(frameless_look_for_prologue(FI))
extern CORE_ADDR i386go32_frame_saved_pc (struct frame_info *frame);
#undef FRAME_SAVED_PC
#define FRAME_SAVED_PC(FRAME) (i386go32_frame_saved_pc ((FRAME)))
/* Support for longjmp. */
/* Details about jmp_buf. It's supposed to be an array of integers. */
#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */
#define JB_PC 8 /* Array index of saved PC inside jmp_buf. */
/* Figure out where the longjmp will land. Slurp the args out of the
stack. We expect the first arg to be a pointer to the jmp_buf
structure from which we extract the pc (JB_PC) that we will land
at. The pc is copied into ADDR. This routine returns true on
success. */
#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
extern int get_longjmp_target (CORE_ADDR *addr);
#endif /* TM_GO32_H */

76
gdb/config/i386/tm-i386.h
View File

@ -63,11 +63,6 @@ struct type;
extern int i386_skip_prologue (int);
/* Immediately after a function call, return the saved pc. */
#define SAVED_PC_AFTER_CALL(frame) i386_saved_pc_after_call (frame)
extern CORE_ADDR i386_saved_pc_after_call (struct frame_info *frame);
/* Stack grows downward. */
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
@ -118,7 +113,7 @@ extern CORE_ADDR i386_saved_pc_after_call (struct frame_info *frame);
#endif
/* Largest number of registers we could have in any configuration. */
#define MAX_NUM_REGS (16 + 16 + 9)
#define MAX_NUM_REGS (16 + 16 + 9 + 1)
/* Register numbers of various important registers.
Note that some of these values are "real" register numbers,
@ -139,60 +134,8 @@ extern CORE_ADDR i386_saved_pc_after_call (struct frame_info *frame);
#else
#define FP0_REGNUM 0
#endif
/* Return the name of register REG. */
#define REGISTER_NAME(reg) i386_register_name ((reg))
extern char *i386_register_name (int reg);
/* Use the "default" register numbering scheme for stabs and COFF. */
#define STAB_REG_TO_REGNUM(reg) i386_stab_reg_to_regnum ((reg))
#define SDB_REG_TO_REGNUM(reg) i386_stab_reg_to_regnum ((reg))
extern int i386_stab_reg_to_regnum (int reg);
/* Use the DWARF register numbering scheme for DWARF and DWARF 2. */
#define DWARF_REG_TO_REGNUM(reg) i386_dwarf_reg_to_regnum ((reg))
#define DWARF2_REG_TO_REGNUM(reg) i386_dwarf_reg_to_regnum ((reg))
extern int i386_dwarf_reg_to_regnum (int reg);
/* We don't define ECOFF_REG_TO_REGNUM, since ECOFF doesn't seem to be
in use on any of the supported i386 targets. */
/* Sizes of individual register sets. These cover the entire register
file, so summing up the sizes of those portions actually present
yields REGISTER_BYTES. */
#define SIZEOF_GREGS (NUM_GREGS * 4)
#define SIZEOF_FPU_REGS (8 * 10)
#define SIZEOF_FPU_CTRL_REGS (8 * 4)
#define SIZEOF_SSE_REGS (8 * 16 + 4)
/* Total amount of space needed to store our copies of the machine's register
state, the array `registers'. */
#ifdef HAVE_SSE_REGS
#define REGISTER_BYTES \
(SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + SIZEOF_SSE_REGS)
#else
#ifdef HAVE_I387_REGS
#define REGISTER_BYTES (SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS)
#else
#define REGISTER_BYTES (SIZEOF_GREGS)
#endif
#endif
/* Return the offset into the register array of the start of register
number REG. */
#define REGISTER_BYTE(reg) i386_register_byte ((reg))
extern int i386_register_byte (int reg);
/* Return the number of bytes of storage in GDB's register array
occupied by register REG. */
#define REGISTER_RAW_SIZE(reg) i386_register_raw_size ((reg))
extern int i386_register_raw_size (int reg);
/* Largest value REGISTER_RAW_SIZE can have. */
#define MAX_REGISTER_RAW_SIZE 16
@ -275,18 +218,6 @@ extern void i386_store_return_value (struct type *type, char *valbuf);
i386_extract_struct_value_address ((regbuf))
extern CORE_ADDR i386_extract_struct_value_address (char *regbuf);
/* The following redefines make backtracing through sigtramp work.
They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
from the sigcontext structure which is pushed by the kernel on the
user stack, along with a pointer to it. */
/* Return the chain-pointer for FRAME. In the case of the i386, the
frame's nominal address is the address of a 4-byte word containing
the calling frame's address. */
#define FRAME_CHAIN(frame) i386_frame_chain ((frame))
extern CORE_ADDR i386_frame_chain (struct frame_info *frame);
/* Determine whether the function invocation represented by FRAME does
not have a from on the stack associated with it. If it does not,
return non-zero, otherwise return zero. */
@ -295,11 +226,6 @@ extern CORE_ADDR i386_frame_chain (struct frame_info *frame);
i386_frameless_function_invocation (frame)
extern int i386_frameless_function_invocation (struct frame_info *frame);
/* Return the saved program counter for FRAME. */
#define FRAME_SAVED_PC(frame) i386_frame_saved_pc (frame)
extern CORE_ADDR i386_frame_saved_pc (struct frame_info *frame);
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)

49
gdb/config/i386/tm-i386nw.h
View File

@ -1,49 +0,0 @@
/* Macro definitions for i386 running NetWare.
Copyright 1993, 1994, 1995, 1998, 1999, 2000
Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef TM_I386NW_H
#define TM_I386NW_H 1
#include "i386/tm-i386.h"
/* Stop backtracing when we wander into main. */
#define FRAME_CHAIN_VALID(fp,fi) func_frame_chain_valid (fp, fi)
/* Offsets (in target ints) into jmp_buf. Not defined in any system header
file, so we have to step through setjmp/longjmp with a debugger and figure
them out. */
#define JB_ELEMENT_SIZE 4 /* jmp_buf[] is array of ints */
#define JB_PC 6 /* Setjmp()'s return PC saved here */
/* Figure out where the longjmp will land. Slurp the args out of the stack.
We expect the first arg to be a pointer to the jmp_buf structure from which
we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
This routine returns true on success */
extern int get_longjmp_target (CORE_ADDR *);
#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
#endif /* ifndef TM_I386NW_H */

14
gdb/config/i386/tm-i386sol2.h
View File

@ -24,11 +24,6 @@
#define HAVE_I387_REGS
#include "i386/tm-i386v4.h"
/* We use stabs-in-ELF with the DWARF register numbering scheme. */
#undef STAB_REG_TO_REGNUM
#define STAB_REG_TO_REGNUM(reg) i386_dwarf_reg_to_regnum ((reg))
/* If the current gcc for for this target does not produce correct
debugging information for float parameters, both prototyped and
unprototyped, then define this macro. This forces gdb to always
@ -37,15 +32,6 @@
#define COERCE_FLOAT_TO_DOUBLE(formal, actual) (1)
/* Signal handler frames under Solaris 2 are recognized by a return address
of 0xFFFFFFFF, the third parameter on the signal handler stack is
a pointer to an ucontext. */
#undef sigtramp_saved_pc
#undef I386V4_SIGTRAMP_SAVED_PC
#define SIGCONTEXT_PC_OFFSET (36 + 14 * 4)
#undef IN_SIGTRAMP
#define IN_SIGTRAMP(pc, name) (pc == 0xFFFFFFFF)
/* The SunPRO compiler puts out 0 instead of the address in N_SO symbols,
and for SunPRO 3.0, N_FUN symbols too. */
#define SOFUN_ADDRESS_MAYBE_MISSING

45
gdb/config/i386/tm-i386v4.h
View File

@ -31,49 +31,4 @@
#include "config/tm-sysv4.h"
/* Use the alternate method of determining valid frame chains. */
#define FRAME_CHAIN_VALID(fp,fi) func_frame_chain_valid (fp, fi)
/* Offsets (in target ints) into jmp_buf. Not defined in any system header
file, so we have to step through setjmp/longjmp with a debugger and figure
them out. Note that <setjmp> defines _JBLEN as 10, which is the default
if no specific machine is selected, even though we only use 6 slots. */
#define JB_ELEMENT_SIZE sizeof(int) /* jmp_buf[_JBLEN] is array of ints */
#define JB_EBX 0
#define JB_ESI 1
#define JB_EDI 2
#define JB_EBP 3
#define JB_ESP 4
#define JB_EDX 5
#define JB_PC JB_EDX /* Setjmp()'s return PC saved in EDX */
/* Figure out where the longjmp will land. Slurp the args out of the stack.
We expect the first arg to be a pointer to the jmp_buf structure from which
we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
This routine returns true on success */
extern int get_longjmp_target (CORE_ADDR *);
#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
/* The following redefines make backtracing through sigtramp work.
They manufacture a fake sigtramp frame and obtain the saved pc in sigtramp
from the ucontext structure which is pushed by the kernel on the
user stack. Unfortunately there are three variants of sigtramp handlers. */
#define I386V4_SIGTRAMP_SAVED_PC
#define IN_SIGTRAMP(pc, name) ((name) \
&& (STREQ ("_sigreturn", name) \
|| STREQ ("_sigacthandler", name) \
|| STREQ ("sigvechandler", name)))
/* Saved Pc. Get it from ucontext if within sigtramp. */
#define sigtramp_saved_pc i386v4_sigtramp_saved_pc
extern CORE_ADDR i386v4_sigtramp_saved_pc (struct frame_info *);
#endif /* ifndef TM_I386V4_H */

80
gdb/config/i386/tm-linux.h
View File

@ -33,72 +33,9 @@
#include "i386/tm-i386.h"
#include "config/tm-linux.h"
/* Register number for the "orig_eax" pseudo-register. If this
pseudo-register contains a value >= 0 it is interpreted as the
system call number that the kernel is supposed to restart. */
#define I386_LINUX_ORIG_EAX_REGNUM (NUM_GREGS + NUM_FREGS + NUM_SSE_REGS)
/* Adjust a few macros to deal with this extra register. */
#undef NUM_REGS
#define NUM_REGS (NUM_GREGS + NUM_FREGS + NUM_SSE_REGS + 1)
#undef MAX_NUM_REGS
#define MAX_NUM_REGS (16 + 16 + 9 + 1)
#undef REGISTER_BYTES
#define REGISTER_BYTES \
(SIZEOF_GREGS + SIZEOF_FPU_REGS + SIZEOF_FPU_CTRL_REGS + SIZEOF_SSE_REGS + 4)
#undef REGISTER_NAME
#define REGISTER_NAME(reg) i386_linux_register_name ((reg))
extern char *i386_linux_register_name (int reg);
#undef REGISTER_BYTE
#define REGISTER_BYTE(reg) i386_linux_register_byte ((reg))
extern int i386_linux_register_byte (int reg);
#undef REGISTER_RAW_SIZE
#define REGISTER_RAW_SIZE(reg) i386_linux_register_raw_size ((reg))
extern int i386_linux_register_raw_size (int reg);
/* GNU/Linux ELF uses stabs-in-ELF with the DWARF register numbering
scheme by default, so we must redefine STAB_REG_TO_REGNUM. This
messes up the floating-point registers for a.out, but there is not
much we can do about that. */
#undef STAB_REG_TO_REGNUM
#define STAB_REG_TO_REGNUM(reg) i386_dwarf_reg_to_regnum ((reg))
/* Use target_specific function to define link map offsets. */
extern struct link_map_offsets *i386_linux_svr4_fetch_link_map_offsets (void);
#define SVR4_FETCH_LINK_MAP_OFFSETS() i386_linux_svr4_fetch_link_map_offsets ()
/* The following works around a problem with /usr/include/sys/procfs.h */
#define sys_quotactl 1
/* When the i386 Linux kernel calls a signal handler, the return
address points to a bit of code on the stack. These definitions
are used to identify this bit of code as a signal trampoline in
order to support backtracing through calls to signal handlers. */
#define IN_SIGTRAMP(pc, name) i386_linux_in_sigtramp (pc, name)
extern int i386_linux_in_sigtramp (CORE_ADDR, char *);
#undef FRAME_CHAIN
#define FRAME_CHAIN(frame) i386_linux_frame_chain (frame)
extern CORE_ADDR i386_linux_frame_chain (struct frame_info *frame);
#undef FRAME_SAVED_PC
#define FRAME_SAVED_PC(frame) i386_linux_frame_saved_pc (frame)
extern CORE_ADDR i386_linux_frame_saved_pc (struct frame_info *frame);
#undef SAVED_PC_AFTER_CALL
#define SAVED_PC_AFTER_CALL(frame) i386_linux_saved_pc_after_call (frame)
extern CORE_ADDR i386_linux_saved_pc_after_call (struct frame_info *);
#define TARGET_WRITE_PC(pc, ptid) i386_linux_write_pc (pc, ptid)
extern void i386_linux_write_pc (CORE_ADDR pc, ptid_t ptid);
/* When we call a function in a shared library, and the PLT sends us
into the dynamic linker to find the function's real address, we
need to skip over the dynamic linker call. This function decides
@ -110,22 +47,5 @@ extern CORE_ADDR i386_linux_skip_solib_resolver (CORE_ADDR pc);
/* N_FUN symbols in shared libaries have 0 for their values and need
to be relocated. */
#define SOFUN_ADDRESS_MAYBE_MISSING
/* Support for longjmp. */
/* Details about jmp_buf. It's supposed to be an array of integers. */
#define JB_ELEMENT_SIZE 4 /* Size of elements in jmp_buf. */
#define JB_PC 5 /* Array index of saved PC. */
/* Figure out where the longjmp will land. Slurp the args out of the
stack. We expect the first arg to be a pointer to the jmp_buf
structure from which we extract the pc (JB_PC) that we will land
at. The pc is copied into ADDR. This routine returns true on
success. */
#define GET_LONGJMP_TARGET(addr) get_longjmp_target (addr)
extern int get_longjmp_target (CORE_ADDR *addr);
#endif /* #ifndef TM_LINUX_H */

37
gdb/config/i386/tm-nbsd.h
View File

@ -26,39 +26,16 @@
#include "i386/tm-i386.h"
#define JB_ELEMENT_SIZE sizeof(int) /* jmp_buf[_JBLEN] is array of ints */
#define JB_PC 0 /* Setjmp()'s return PC saved here */
/* Figure out where the longjmp will land. Slurp the args out of the stack.
We expect the first arg to be a pointer to the jmp_buf structure from which
we extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
This routine returns true on success */
extern int get_longjmp_target (CORE_ADDR *);
#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)
/* Support for signal handlers. */
#define IN_SIGTRAMP(pc, name) i386bsd_in_sigtramp (pc, name)
extern int i386bsd_in_sigtramp (CORE_ADDR pc, char *name);
/* These defines allow the recognition of sigtramps as a function name
<sigtramp>.
FIXME: kettenis/2001-07-13: These should be added to the target
vector and turned into functions when we go "multi-arch". */
FIXME: kettenis/2002-05-12: Of course these defines will have to go
if we go truly "multi-arch", but I don't know yet how to get rid of
them. */
#define SIGTRAMP_START(pc) i386bsd_sigtramp_start
#define SIGTRAMP_END(pc) i386bsd_sigtramp_end
extern CORE_ADDR i386bsd_sigtramp_start;
extern CORE_ADDR i386bsd_sigtramp_end;
/* Override FRAME_SAVED_PC to enable the recognition of signal handlers. */
#undef FRAME_SAVED_PC
#define FRAME_SAVED_PC(frame) i386bsd_frame_saved_pc (frame)
extern CORE_ADDR i386bsd_frame_saved_pc (struct frame_info *frame);
#define SIGTRAMP_START(pc) i386bsd_sigtramp_start (pc)
#define SIGTRAMP_END(pc) i386bsd_sigtramp_end (pc)
extern CORE_ADDR i386bsd_sigtramp_start (CORE_ADDR pc);
extern CORE_ADDR i386bsd_sigtramp_end (CORE_ADDR pc);
#endif /* TM_NBSD_H */

4
gdb/config/i386/tm-nbsdaout.h
View File

@ -27,8 +27,4 @@
#define IN_SOLIB_CALL_TRAMPOLINE(pc, name) \
(name && !strcmp(name, "_DYNAMIC"))
extern use_struct_convention_fn i386nbsd_aout_use_struct_convention;
#define USE_STRUCT_CONVENTION(gcc_p, type) \
i386nbsd_aout_use_struct_convention(gcc_p, type)
#endif /* TM_NBSDAOUT_H */

67
gdb/i386-linux-tdep.c
View File

@ -33,9 +33,12 @@
#include "solib-svr4.h" /* For struct link_map_offsets. */
#include "i386-tdep.h"
#include "i386-linux-tdep.h"
/* Return the name of register REG. */
char *
static char *
i386_linux_register_name (int reg)
{
/* Deal with the extra "orig_eax" pseudo register. */
@ -45,7 +48,7 @@ i386_linux_register_name (int reg)
return i386_register_name (reg);
}
int
static int
i386_linux_register_byte (int reg)
{
/* Deal with the extra "orig_eax" pseudo register. */
@ -56,7 +59,7 @@ i386_linux_register_byte (int reg)
return i386_register_byte (reg);
}
int
static int
i386_linux_register_raw_size (int reg)
{
/* Deal with the extra "orig_eax" pseudo register. */
@ -224,8 +227,8 @@ i386_linux_rt_sigtramp_start (CORE_ADDR pc)
/* Return whether PC is in a GNU/Linux sigtramp routine. */
int
i386_linux_in_sigtramp (CORE_ADDR pc, char *name)
static int
i386_linux_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
if (name)
return STREQ ("__restore", name) || STREQ ("__restore_rt", name);
@ -379,7 +382,7 @@ i386_linux_saved_pc_after_call (struct frame_info *frame)
/* Set the program counter for process PTID to PC. */
void
static void
i386_linux_write_pc (CORE_ADDR pc, ptid_t ptid)
{
write_register_pid (PC_REGNUM, pc, ptid);
@ -496,7 +499,7 @@ i386_linux_skip_solib_resolver (CORE_ADDR pc)
from a GDB that was not built on an GNU/Linux x86 host (for cross
debugging). */
struct link_map_offsets *
static struct link_map_offsets *
i386_linux_svr4_fetch_link_map_offsets (void)
{
static struct link_map_offsets lmo;
@ -528,3 +531,53 @@ i386_linux_svr4_fetch_link_map_offsets (void)
return lmp;
}
static void
i386_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* GNU/Linux uses ELF. */
i386_elf_init_abi (info, gdbarch);
/* We support the SSE registers on GNU/Linux. */
tdep->num_xmm_regs = I386_NUM_XREGS - 1;
/* set_gdbarch_num_regs (gdbarch, I386_SSE_NUM_REGS); */
/* Since we have the extra "orig_eax" register on GNU/Linux, we have
to adjust a few things. */
set_gdbarch_write_pc (gdbarch, i386_linux_write_pc);
set_gdbarch_num_regs (gdbarch, I386_SSE_NUM_REGS + 1);
set_gdbarch_register_name (gdbarch, i386_linux_register_name);
set_gdbarch_register_bytes (gdbarch, I386_SSE_SIZEOF_REGS + 4);
set_gdbarch_register_byte (gdbarch, i386_linux_register_byte);
set_gdbarch_register_raw_size (gdbarch, i386_linux_register_raw_size);
tdep->jb_pc_offset = 20; /* From <bits/setjmp.h>. */
/* When the i386 Linux kernel calls a signal handler, the return
address points to a bit of code on the stack. These definitions
are used to identify this bit of code as a signal trampoline in
order to support backtracing through calls to signal handlers. */
set_gdbarch_pc_in_sigtramp (gdbarch, i386_linux_pc_in_sigtramp);
set_gdbarch_frame_chain (gdbarch, i386_linux_frame_chain);
set_gdbarch_frame_saved_pc (gdbarch, i386_linux_frame_saved_pc);
set_gdbarch_saved_pc_after_call (gdbarch, i386_linux_saved_pc_after_call);
tdep->sigtramp_saved_pc = i386_linux_sigtramp_saved_pc;
set_solib_svr4_fetch_link_map_offsets (gdbarch,
i386_linux_svr4_fetch_link_map_offsets);
}
/* Provide a prototype to silence -Wmissing-prototypes. */
extern void _initialize_i386_linux_tdep (void);
void
_initialize_i386_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_LINUX,
i386_linux_init_abi);
}

36
gdb/i386-linux-tdep.h Normal file
View File

@ -0,0 +1,36 @@
/* Target-dependent code for Linux/x86.
Copyright 2002
Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef I386_LINUX_TDEP_H
#define I386_LINUX_TDEP_H
/* The Linux kernel pretends there is an additional "orig_eax"
register. Since GDB needs access to that register to be able to
properly restart system calls when necessary (see
i386-linux-tdep.c) we need our own versions of a number of
functions that deal with GDB's register cache. */
/* Register number for the "orig_eax" pseudo-register. If this
pseudo-register contains a value >= 0 it is interpreted as the
system call number that the kernel is supposed to restart. */
#define I386_LINUX_ORIG_EAX_REGNUM I386_SSE_NUM_REGS
#endif /* i386-linux-tdep.h */

59
gdb/i386-sol2-tdep.c Normal file
View File

@ -0,0 +1,59 @@
/* Target-dependent code for Solaris x86.
Copyright 2002 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "i386-tdep.h"
static int
i386_sol2_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
/* Signal handler frames under Solaris 2 are recognized by a return
address of 0xffffffff. */
return (pc == 0xffffffff);
}
/* Solaris 2. */
static void
i386_sol2_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Solaris is SVR4-based. */
i386_svr4_init_abi (info, gdbarch);
/* Signal trampolines are different from SVR4, in fact they're
rather similar to BSD. */
set_gdbarch_pc_in_sigtramp (gdbarch, i386_sol2_pc_in_sigtramp);
tdep->sigtramp_saved_pc = i386bsd_sigtramp_saved_pc;
tdep->sc_pc_offset = 36 + 14 * 4;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_i386_sol2_tdep (void);
void
_initialize_i386_sol2_tdep (void)
{
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_SOLARIS,
i386_sol2_init_abi);
}

553
gdb/i386-tdep.c
View File

@ -36,8 +36,6 @@
#include "value.h"
#include "gdb_assert.h"
#include "elf-bfd.h"
#include "i386-tdep.h"
/* Names of the registers. The first 10 registers match the register
@ -119,7 +117,7 @@ i386_register_virtual_size (int reg)
/* Convert stabs register number REG to the appropriate register
number used by GDB. */
int
static int
i386_stab_reg_to_regnum (int reg)
{
/* This implements what GCC calls the "default" register map. */
@ -150,10 +148,10 @@ i386_stab_reg_to_regnum (int reg)
return NUM_REGS + NUM_PSEUDO_REGS;
}
/* Convert Dwarf register number REG to the appropriate register
/* Convert DWARF register number REG to the appropriate register
number used by GDB. */
int
static int
i386_dwarf_reg_to_regnum (int reg)
{
/* The DWARF register numbering includes %eip and %eflags, and
@ -466,7 +464,7 @@ i386_get_frame_setup (CORE_ADDR pc)
frame's nominal address is the address of a 4-byte word containing
the calling frame's address. */
CORE_ADDR
static CORE_ADDR
i386_frame_chain (struct frame_info *frame)
{
if (frame->signal_handler_caller)
@ -493,30 +491,24 @@ i386_frameless_function_invocation (struct frame_info *frame)
/* Return the saved program counter for FRAME. */
CORE_ADDR
static CORE_ADDR
i386_frame_saved_pc (struct frame_info *frame)
{
/* FIXME: kettenis/2001-05-09: Conditionalizing the next bit of code
on SIGCONTEXT_PC_OFFSET and I386V4_SIGTRAMP_SAVED_PC should be
considered a temporary hack. I plan to come up with something
better when we go multi-arch. */
#if defined (SIGCONTEXT_PC_OFFSET) || defined (I386V4_SIGTRAMP_SAVED_PC)
if (frame->signal_handler_caller)
return sigtramp_saved_pc (frame);
#endif
{
CORE_ADDR (*sigtramp_saved_pc) (struct frame_info *);
sigtramp_saved_pc = gdbarch_tdep (current_gdbarch)->sigtramp_saved_pc;
gdb_assert (sigtramp_saved_pc != NULL);
return sigtramp_saved_pc (frame);
}
return read_memory_unsigned_integer (frame->frame + 4, 4);
}
CORE_ADDR
i386go32_frame_saved_pc (struct frame_info *frame)
{
return read_memory_integer (frame->frame + 4, 4);
}
/* Immediately after a function call, return the saved pc. */
CORE_ADDR
static CORE_ADDR
i386_saved_pc_after_call (struct frame_info *frame)
{
return read_memory_unsigned_integer (read_register (SP_REGNUM), 4);
@ -834,49 +826,35 @@ i386_pop_frame (void)
}
#ifdef GET_LONGJMP_TARGET
/* FIXME: Multi-arching does not set JB_PC and JB_ELEMENT_SIZE yet.
Fill in with dummy value to enable compilation. */
#ifndef JB_PC
#define JB_PC 0
#endif /* JB_PC */
#ifndef JB_ELEMENT_SIZE
#define JB_ELEMENT_SIZE 4
#endif /* JB_ELEMENT_SIZE */
/* Figure out where the longjmp will land. Slurp the args out of the
stack. We expect the first arg to be a pointer to the jmp_buf
structure from which we extract the pc (JB_PC) that we will land
at. The pc is copied into PC. This routine returns true on
structure from which we extract the address that we will land at.
This address is copied into PC. This routine returns true on
success. */
int
get_longjmp_target (CORE_ADDR *pc)
static int
i386_get_longjmp_target (CORE_ADDR *pc)
{
char buf[TARGET_PTR_BIT / TARGET_CHAR_BIT];
char buf[4];
CORE_ADDR sp, jb_addr;
int jb_pc_offset = gdbarch_tdep (current_gdbarch)->jb_pc_offset;
/* If JB_PC_OFFSET is -1, we have no way to find out where the
longjmp will land. */
if (jb_pc_offset == -1)
return 0;
sp = read_register (SP_REGNUM);
if (target_read_memory (sp + SP_ARG0, /* Offset of first arg on stack. */
buf,
TARGET_PTR_BIT / TARGET_CHAR_BIT))
if (target_read_memory (sp + 4, buf, 4))
return 0;
jb_addr = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
TARGET_PTR_BIT / TARGET_CHAR_BIT))
jb_addr = extract_address (buf, 4);
if (target_read_memory (jb_addr + jb_pc_offset, buf, 4))
return 0;
*pc = extract_address (buf, TARGET_PTR_BIT / TARGET_CHAR_BIT);
*pc = extract_address (buf, 4);
return 1;
}
#endif /* GET_LONGJMP_TARGET */
CORE_ADDR
@ -1044,6 +1022,37 @@ i386_extract_struct_value_address (char *regbuf)
}
/* This is the variable that is set with "set struct-convention", and
its legitimate values. */
static const char default_struct_convention[] = "default";
static const char pcc_struct_convention[] = "pcc";
static const char reg_struct_convention[] = "reg";
static const char *valid_conventions[] =
{
default_struct_convention,
pcc_struct_convention,
reg_struct_convention,
NULL
};
static const char *struct_convention = default_struct_convention;
static int
i386_use_struct_convention (int gcc_p, struct type *type)
{
enum struct_return struct_return;
if (struct_convention == default_struct_convention)
struct_return = gdbarch_tdep (current_gdbarch)->struct_return;
else if (struct_convention == pcc_struct_convention)
struct_return = pcc_struct_return;
else
struct_return = reg_struct_return;
return generic_use_struct_convention (struct_return == reg_struct_return,
type);
}
/* Return the GDB type object for the "standard" data type of data in
register REGNUM. Perhaps %esi and %edi should go here, but
potentially they could be used for things other than address. */
@ -1122,34 +1131,6 @@ i386_register_convert_to_raw (struct type *type, int regnum,
}
#ifdef I386V4_SIGTRAMP_SAVED_PC
/* Get saved user PC for sigtramp from the pushed ucontext on the
stack for all three variants of SVR4 sigtramps. */
CORE_ADDR
i386v4_sigtramp_saved_pc (struct frame_info *frame)
{
CORE_ADDR saved_pc_offset = 4;
char *name = NULL;
find_pc_partial_function (frame->pc, &name, NULL, NULL);
if (name)
{
if (STREQ (name, "_sigreturn"))
saved_pc_offset = 132 + 14 * 4;
else if (STREQ (name, "_sigacthandler"))
saved_pc_offset = 80 + 14 * 4;
else if (STREQ (name, "sigvechandler"))
saved_pc_offset = 120 + 14 * 4;
}
if (frame->next)
return read_memory_integer (frame->next->frame + saved_pc_offset, 4);
return read_memory_integer (read_register (SP_REGNUM) + saved_pc_offset, 4);
}
#endif /* I386V4_SIGTRAMP_SAVED_PC */
#ifdef STATIC_TRANSFORM_NAME
/* SunPRO encodes the static variables. This is not related to C++
mangling, it is done for C too. */
@ -1199,6 +1180,16 @@ skip_trampoline_code (CORE_ADDR pc, char *name)
}
/* Return non-zero if PC and NAME show that we are in a signal
trampoline. */
static int
i386_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
return (name && strcmp ("_sigtramp", name) == 0);
}
/* We have two flavours of disassembly. The machinery on this page
deals with switching between those. */
@ -1213,229 +1204,132 @@ gdb_print_insn_i386 (bfd_vma memaddr, disassemble_info *info)
or intel_flavor. */
internal_error (__FILE__, __LINE__, "failed internal consistency check");
}
/* This table matches the indices assigned to enum i386_abi. Keep
them in sync. */
static const char * const i386_abi_names[] =
{
"<unknown>",
"SVR4",
"NetBSD",
"GNU/Linux",
"GNU/Hurd",
"Solaris",
"FreeBSD",
NULL
};
/* There are a few i386 architecture variants that differ only
slightly from the generic i386 target. For now, we don't give them
their own source file, but include them here. As a consequence,
they'll always be included. */
#define ABI_TAG_OS_GNU_LINUX I386_ABI_LINUX
#define ABI_TAG_OS_GNU_HURD I386_ABI_HURD
#define ABI_TAG_OS_GNU_SOLARIS I386_ABI_INVALID
#define ABI_TAG_OS_FREEBSD I386_ABI_FREEBSD
#define ABI_TAG_OS_NETBSD I386_ABI_NETBSD
static void
process_note_sections (bfd *abfd, asection *sect, void *obj)
{
int *abi = obj;
const char *name;
unsigned int sectsize;
name = bfd_get_section_name (abfd, sect);
sectsize = bfd_section_size (abfd, sect);
if (strcmp (name, ".note.ABI-tag") == 0 && sectsize > 0)
{
unsigned int name_length, data_length, note_type;
char *note;
/* If the section is larger than this, it's probably not what we
are looking for. */
if (sectsize > 128)
sectsize = 128;
note = alloca (sectsize);
bfd_get_section_contents (abfd, sect, note,
(file_ptr) 0, (bfd_size_type) sectsize);
name_length = bfd_h_get_32 (abfd, note);
data_length = bfd_h_get_32 (abfd, note + 4);
note_type = bfd_h_get_32 (abfd, note + 8);
if (name_length == 4 && data_length == 16
&& note_type == NT_GNU_ABI_TAG
&& strcmp (note + 12, "GNU") == 0)
{
int abi_tag_os = bfd_h_get_32 (abfd, note + 16);
/* The case numbers are from abi-tags in glibc. */
switch (abi_tag_os)
{
case GNU_ABI_TAG_LINUX:
*abi = ABI_TAG_OS_GNU_LINUX;
break;
case GNU_ABI_TAG_HURD:
*abi = ABI_TAG_OS_GNU_HURD;
break;
case GNU_ABI_TAG_SOLARIS:
*abi = ABI_TAG_OS_GNU_SOLARIS;
break;
default:
internal_error
(__FILE__, __LINE__,
"process_note_abi_sections: unknown ABI OS tag %d",
abi_tag_os);
break;
}
}
else if (name_length == 8 && data_length == 4
&& note_type == NT_FREEBSD_ABI_TAG
&& strcmp (note + 12, "FreeBSD") == 0)
*abi = ABI_TAG_OS_FREEBSD;
}
/* NetBSD uses a similar trick. */
else if (strcmp (name, ".note.netbsd.ident") == 0 && sectsize > 0)
{
unsigned int name_length, desc_length, note_type;
char *note;
/* If the section is larger than this, it's probably not what we are
looking for. */
if (sectsize > 128)
sectsize = 128;
note = alloca (sectsize);
bfd_get_section_contents (abfd, sect, note,
(file_ptr) 0, (bfd_size_type) sectsize);
name_length = bfd_h_get_32 (abfd, note);
desc_length = bfd_h_get_32 (abfd, note + 4);
note_type = bfd_h_get_32 (abfd, note + 8);
if (name_length == 7 && desc_length == 4
&& note_type == NT_NETBSD_IDENT
&& strcmp (note + 12, "NetBSD") == 0)
*abi = ABI_TAG_OS_NETBSD;
}
}
/* System V Release 4 (SVR4). */
static int
i386_elf_abi_from_note (bfd *abfd)
i386_svr4_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
enum i386_abi abi = I386_ABI_UNKNOWN;
bfd_map_over_sections (abfd, process_note_sections, &abi);
return abi;
return (name && (strcmp ("_sigreturn", name) == 0
|| strcmp ("_sigacthandler", name) == 0
|| strcmp ("sigvechandler", name) == 0));
}
static enum i386_abi
i386_elf_abi (bfd *abfd)
/* Get saved user PC for sigtramp from the pushed ucontext on the
stack for all three variants of SVR4 sigtramps. */
CORE_ADDR
i386_svr4_sigtramp_saved_pc (struct frame_info *frame)
{
int elfosabi = elf_elfheader (abfd)->e_ident[EI_OSABI];
CORE_ADDR saved_pc_offset = 4;
char *name = NULL;
/* The fact that the EI_OSABI byte is set to ELFOSABI_NONE doesn't
necessarily mean that this is a System V ELF binary. To further
distinguish between binaries for differens operating systems,
check for vendor-specific note elements. */
if (elfosabi == ELFOSABI_NONE)
find_pc_partial_function (frame->pc, &name, NULL, NULL);
if (name)
{
enum i386_abi abi = i386_elf_abi_from_note (abfd);
if (abi != I386_ABI_UNKNOWN)
return abi;
/* FreeBSD folks are naughty; they stored the string "FreeBSD"
in the padding of the e_ident field of the ELF header. */
if (strcmp (&elf_elfheader (abfd)->e_ident[8], "FreeBSD") == 0)
return I386_ABI_FREEBSD;
if (strcmp (name, "_sigreturn") == 0)
saved_pc_offset = 132 + 14 * 4;
else if (strcmp (name, "_sigacthandler") == 0)
saved_pc_offset = 80 + 14 * 4;
else if (strcmp (name, "sigvechandler") == 0)
saved_pc_offset = 120 + 14 * 4;
}
switch (elfosabi)
{
case ELFOSABI_NONE:
return I386_ABI_SVR4;
case ELFOSABI_FREEBSD:
return I386_ABI_FREEBSD;
}
return I386_ABI_UNKNOWN;
if (frame->next)
return read_memory_integer (frame->next->frame + saved_pc_offset, 4);
return read_memory_integer (read_register (SP_REGNUM) + saved_pc_offset, 4);
}
struct i386_abi_handler
/* DJGPP. */
static int
i386_go32_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
struct i386_abi_handler *next;
enum i386_abi abi;
void (*init_abi)(struct gdbarch_info, struct gdbarch *);
};
/* DJGPP doesn't have any special frames for signal handlers. */
return 0;
}
struct i386_abi_handler *i386_abi_handler_list = NULL;
/* Generic ELF. */
void
i386_gdbarch_register_os_abi (enum i386_abi abi,
void (*init_abi)(struct gdbarch_info,
struct gdbarch *))
i386_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct i386_abi_handler **handler_p;
for (handler_p = &i386_abi_handler_list; *handler_p != NULL;
handler_p = &(*handler_p)->next)
{
if ((*handler_p)->abi == abi)
{
internal_error
(__FILE__, __LINE__,
"i386_gdbarch_register_abi: A handler for this ABI variant "
"(%d) has already been registered", (int) abi);
/* If user wants to continue, override previous definition. */
(*handler_p)->init_abi = init_abi;
return;
}
}
(*handler_p)
= (struct i386_abi_handler *) xmalloc (sizeof (struct i386_abi_handler));
(*handler_p)->next = NULL;
(*handler_p)->abi = abi;
(*handler_p)->init_abi = init_abi;
/* We typically use stabs-in-ELF with the DWARF register numbering. */
set_gdbarch_stab_reg_to_regnum (gdbarch, i386_dwarf_reg_to_regnum);
}
/* System V Release 4 (SVR4). */
void
i386_svr4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* System V Release 4 uses ELF. */
i386_elf_init_abi (info, gdbarch);
/* FIXME: kettenis/20020511: Why do we override this function here? */
set_gdbarch_frame_chain_valid (gdbarch, func_frame_chain_valid);
set_gdbarch_pc_in_sigtramp (gdbarch, i386_svr4_pc_in_sigtramp);
tdep->sigtramp_saved_pc = i386_svr4_sigtramp_saved_pc;
tdep->jb_pc_offset = 20;
}
/* DJGPP. */
void
i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
set_gdbarch_pc_in_sigtramp (gdbarch, i386_go32_pc_in_sigtramp);
tdep->jb_pc_offset = 36;
}
/* NetWare. */
void
i386_nw_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* FIXME: kettenis/20020511: Why do we override this function here? */
set_gdbarch_frame_chain_valid (gdbarch, func_frame_chain_valid);
tdep->jb_pc_offset = 24;
}
struct gdbarch *
i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch_tdep *tdep;
struct gdbarch *gdbarch;
enum i386_abi abi = I386_ABI_UNKNOWN;
struct i386_abi_handler *abi_handler;
enum gdb_osabi osabi = GDB_OSABI_UNKNOWN;
/* Try to determine the OS ABI of the object we're loading. */
if (info.abfd != NULL)
{
switch (bfd_get_flavour (info.abfd))
{
case bfd_target_elf_flavour:
abi= i386_elf_abi (info.abfd);
break;
default:
/* Not sure what to do here, leave the ABI as unknown. */
break;
}
}
osabi = gdbarch_lookup_osabi (info.abfd);
/* Find a candidate among extant architectures. */
for (arches = gdbarch_list_lookup_by_info (arches, &info);
arches != NULL;
arches = gdbarch_list_lookup_by_info (arches->next, &info))
{
/* Make sure the ABI selection matches. */
/* Make sure the OS ABI selection matches. */
tdep = gdbarch_tdep (arches->gdbarch);
if (tdep && tdep->abi == abi)
if (tdep && tdep->osabi == osabi)
return arches->gdbarch;
}
@ -1443,11 +1337,21 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep = XMALLOC (struct gdbarch_tdep);
gdbarch = gdbarch_alloc (&info, tdep);
tdep->abi = abi;
tdep->osabi = osabi;
/* FIXME: kettenis/2001-11-24: Although not all IA-32 processors
have the SSE registers, it's easier to set the default to 8. */
tdep->num_xmm_regs = 8;
/* The i386 default settings don't include the SSE registers.
FIXME: kettenis/20020509: They do include the FPU registers for
now, which is not quite right. */
tdep->num_xmm_regs = 0;
tdep->jb_pc_offset = -1;
tdep->struct_return = pcc_struct_return;
tdep->sigtramp_saved_pc = NULL;
tdep->sigtramp_start = 0;
tdep->sigtramp_end = 0;
tdep->sc_pc_offset = -1;
set_gdbarch_get_longjmp_target (gdbarch, i386_get_longjmp_target);
set_gdbarch_use_generic_dummy_frames (gdbarch, 0);
@ -1463,50 +1367,61 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_pc_in_call_dummy (gdbarch, pc_in_call_dummy_on_stack);
/* NOTE: tm-i386nw.h and tm-i386v4.h override this. */
set_gdbarch_frame_chain_valid (gdbarch, file_frame_chain_valid);
set_gdbarch_use_struct_convention (gdbarch, i386_use_struct_convention);
/* NOTE: tm-i386aix.h, tm-i386bsd.h, tm-i386os9k.h, tm-linux.h,
tm-ptx.h, tm-symmetry.h currently override this. Sigh. */
set_gdbarch_num_regs (gdbarch, NUM_GREGS + NUM_FREGS + NUM_SSE_REGS);
/* The following redefines make backtracing through sigtramp work.
They manufacture a fake sigtramp frame and obtain the saved pc in
sigtramp from the sigcontext structure which is pushed by the
kernel on the user stack, along with a pointer to it. */
set_gdbarch_frame_chain (gdbarch, i386_frame_chain);
set_gdbarch_frame_chain_valid (gdbarch, file_frame_chain_valid);
set_gdbarch_frame_saved_pc (gdbarch, i386_frame_saved_pc);
set_gdbarch_saved_pc_after_call (gdbarch, i386_saved_pc_after_call);
set_gdbarch_pc_in_sigtramp (gdbarch, i386_pc_in_sigtramp);
/* NOTE: tm-i386aix.h, tm-i386bsd.h, tm-i386os9k.h, tm-ptx.h,
tm-symmetry.h currently override this. Sigh. */
set_gdbarch_num_regs (gdbarch, I386_NUM_GREGS + I386_NUM_FREGS);
/* Use the "default" register numbering scheme for stabs and COFF. */
set_gdbarch_stab_reg_to_regnum (gdbarch, i386_stab_reg_to_regnum);
set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_stab_reg_to_regnum);
/* Use the DWARF register numbering scheme for DWARF and DWARF 2. */
set_gdbarch_dwarf_reg_to_regnum (gdbarch, i386_dwarf_reg_to_regnum);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, i386_dwarf_reg_to_regnum);
/* We don't define ECOFF_REG_TO_REGNUM, since ECOFF doesn't seem to
be in use on any of the supported i386 targets. */
set_gdbarch_register_bytes (gdbarch, I386_SIZEOF_GREGS + I386_SIZEOF_FREGS);
set_gdbarch_register_name (gdbarch, i386_register_name);
set_gdbarch_register_byte (gdbarch, i386_register_byte);
set_gdbarch_register_raw_size (gdbarch, i386_register_raw_size);
/* Hook in ABI-specific overrides, if they have been registered. */
if (abi == I386_ABI_UNKNOWN)
{
/* Don't complain about not knowing the ABI variant if we don't
have an inferior. */
if (info.abfd)
fprintf_filtered
(gdb_stderr, "GDB doesn't recognize the ABI of the inferior. "
"Attempting to continue with the default i386 settings");
}
else
{
for (abi_handler = i386_abi_handler_list; abi_handler != NULL;
abi_handler = abi_handler->next)
if (abi_handler->abi == abi)
break;
gdbarch_init_osabi (info, gdbarch, osabi);
if (abi_handler)
abi_handler->init_abi (info, gdbarch);
else
{
/* We assume that if GDB_MULTI_ARCH is less than
GDB_MULTI_ARCH_TM that an ABI variant can be supported by
overriding definitions in this file. */
if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL)
fprintf_filtered
(gdb_stderr,
"A handler for the ABI variant \"%s\" is not built into this "
"configuration of GDB. "
"Attempting to continue with the default i386 settings",
i386_abi_names[abi]);
}
}
return gdbarch;
}
static enum gdb_osabi
i386_coff_osabi_sniffer (bfd *abfd)
{
if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0)
return GDB_OSABI_GO32;
return GDB_OSABI_UNKNOWN;
}
static enum gdb_osabi
i386_nlm_osabi_sniffer (bfd *abfd)
{
return GDB_OSABI_NETWARE;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_i386_tdep (void);
@ -1544,4 +1459,30 @@ and the default value is \"att\".",
&setlist);
add_show_from_set (new_cmd, &showlist);
}
/* Add the variable that controls the convention for returning
structs. */
{
struct cmd_list_element *new_cmd;
new_cmd = add_set_enum_cmd ("struct-convention", no_class,
valid_conventions,
&struct_convention, "\
Set the convention for returning small structs, valid values \
are \"default\", \"pcc\" and \"reg\", and the default value is \"default\".",
&setlist);
add_show_from_set (new_cmd, &showlist);
}
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
i386_coff_osabi_sniffer);
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_nlm_flavour,
i386_nlm_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_SVR4,
i386_svr4_init_abi);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_GO32,
i386_go32_init_abi);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_NETWARE,
i386_nw_init_abi);
}

80
gdb/i386-tdep.h
View File

@ -1,5 +1,5 @@
/* Target-dependent code for GDB, the GNU debugger.
Copyright 2001
Copyright 2001, 2002
Free Software Foundation, Inc.
This file is part of GDB.
@ -22,6 +22,8 @@
#ifndef I386_TDEP_H
#define I386_TDEP_H
#include "osabi.h"
/* GDB's i386 target supports both the 32-bit Intel Architecture
(IA-32) and the 64-bit AMD x86-64 architecture. Internally it uses
a similar register layout for both.
@ -40,30 +42,38 @@
differs and is determined by the num_xmm_regs member of `struct
gdbarch_tdep'. */
/* ABI variants that we know about. */
enum i386_abi
/* Convention for returning structures. */
enum struct_return
{
I386_ABI_UNKNOWN = 0,
/* ELF */
I386_ABI_SVR4, /* This is the default. */
I386_ABI_NETBSD,
I386_ABI_LINUX,
I386_ABI_HURD,
I386_ABI_SOLARIS,
I386_ABI_FREEBSD,
I386_ABI_INVALID = -1
pcc_struct_return, /* Return "short" structures in memory. */
reg_struct_return /* Return "short" structures in registers. */
};
/* i386 architecture specific information. */
struct gdbarch_tdep
{
/* ABI. */
enum i386_abi abi;
enum gdb_osabi osabi;
/* Number of SSE registers. */
int num_xmm_regs;
/* Offset of saved PC in jmp_buf. */
int jb_pc_offset;
/* Convention for returning structures. */
enum struct_return struct_return;
/* Get saved PC for sigtramp. */
CORE_ADDR (*sigtramp_saved_pc) (struct frame_info *);
/* Address range where sigtramp lives. */
CORE_ADDR sigtramp_start;
CORE_ADDR sigtramp_end;
/* Offset of saved PC in `struct sigcontext'. */
int sc_pc_offset;
};
/* Floating-point registers. */
@ -129,8 +139,42 @@ struct gdbarch_tdep
#define IS_FPU_CTRL_REGNUM(n) FPC_REGNUM_P (n)
#define IS_SSE_REGNUM(n) SSE_REGNUM_P (n)
void i386_gdbarch_register_os_abi (enum i386_abi,
void (*init_abi)(struct gdbarch_info,
struct gdbarch *));
#define I386_NUM_GREGS 16
#define I386_NUM_FREGS 16
#define I386_NUM_XREGS 9
#define I386_SSE_NUM_REGS (I386_NUM_GREGS + I386_NUM_FREGS \
+ I386_NUM_XREGS)
/* Sizes of individual register sets. These cover the entire register
file, so summing up the sizes of those portions actually present
yields REGISTER_BYTES. */
#define I386_SIZEOF_GREGS (I386_NUM_GREGS * 4)
#define I386_SIZEOF_FREGS (8 * 10 + 8 * 4)
#define I386_SIZEOF_XREGS (8 * 16 + 4)
#define I386_SSE_SIZEOF_REGS (I386_SIZEOF_GREGS + I386_SIZEOF_FREGS \
+ I386_SIZEOF_XREGS)
/* Return the name of register REG. */
extern char *i386_register_name (int reg);
/* Return the offset into the register array of the start of register
number REG. */
extern int i386_register_byte (int reg);
/* Return the number of bytes of storage in GDB's register array
occupied by register REG. */
extern int i386_register_raw_size (int reg);
/* Initialize a basic ELF architecture variant. */
extern void i386_elf_init_abi (struct gdbarch_info, struct gdbarch *);
/* Initialize a SVR4 architecture variant. */
extern void i386_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
/* Functions exported from i386bsd-tdep.c. */
extern CORE_ADDR i386bsd_sigtramp_saved_pc (struct frame_info *frame);
#endif /* i386-tdep.h */

28
gdb/i386bsd-nat.c
View File

@ -382,19 +382,39 @@ kernel_u_size (void)
return (sizeof (struct user));
}
/* See i386bsd-tdep.c. */
extern int i386bsd_sigcontext_pc_offset;
void
_initialize_i386bsd_nat (void)
{
int sc_pc_offset;
/* To support the recognition of signal handlers, i386bsd-tdep.c
hardcodes some constants. Inclusion of this file means that we
are compiling a native debugger, which means that we can use the
system header files and sysctl(3) to get at the relevant
information. */
#if defined (__FreeBSD_version) && __FreeBSD_version >= 400011
extern int i386fbsd4_sc_pc_offset;
#define SC_PC_OFFSET i386fbsd4_sc_pc_offset
#elif defined (NetBSD) || defined (__NetBSD_Version__)
extern int i386nbsd_sc_pc_offset;
#define SC_PC_OFFSET i386nbsd_sc_pc_offset
#else
extern int i386bsd_sc_pc_offset;
#define SC_PC_OFFSET i386bsd_sc_pc_offset
#endif
/* Override the default value for the offset of the program counter
in the sigcontext structure. */
i386bsd_sigcontext_pc_offset = offsetof (struct sigcontext, sc_pc);
sc_pc_offset = offsetof (struct sigcontext, sc_pc);
if (SC_PC_OFFSET != sc_pc_offset)
{
warning ("\
offsetof (struct sigcontext, sc_pc) yields %d instead of %d.\n\
Please report this to <bug-gdb@gnu.org>.",
sc_pc_offset, SC_PC_OFFSET);
}
SC_PC_OFFSET = sc_pc_offset;
}

201
gdb/i386bsd-tdep.c
View File

@ -1,5 +1,5 @@
/* Target-dependent code for i386 BSD's.
Copyright 2001 Free Software Foundation, Inc.
Copyright 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
@ -23,26 +23,19 @@
#include "gdbcore.h"
#include "regcache.h"
#include "i386-tdep.h"
/* Support for signal handlers. */
/* Range in which to find the signaltramp routine, traditionally found
on the use stack, just below the user area. Initialized to values
that work for NetBSD and FreeBSD. */
CORE_ADDR i386bsd_sigtramp_start = 0xbfbfdf20;
CORE_ADDR i386bsd_sigtramp_end = 0xbfbfdff0;
/* Return whether PC is in a BSD sigtramp routine. */
int
i386bsd_in_sigtramp (CORE_ADDR pc, char *name)
static int
i386bsd_pc_in_sigtramp (CORE_ADDR pc, char *name)
{
return (pc >= i386bsd_sigtramp_start && pc < i386bsd_sigtramp_end);
}
struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
/* Offset in the sigcontext structure of the program counter.
Initialized to the value from 4.4 BSD Lite. */
int i386bsd_sigcontext_pc_offset = 20;
return (pc >= tdep->sigtramp_start && pc < tdep->sigtramp_end);
}
/* Assuming FRAME is for a BSD sigtramp routine, return the address of
the associated sigcontext structure. */
@ -62,19 +55,24 @@ i386bsd_sigcontext_addr (struct frame_info *frame)
}
/* Assuming FRAME is for a BSD sigtramp routine, return the saved
program counter. */
program counter.
static CORE_ADDR
Note: This function is used for Solaris 2 too, so don't make it
static. */
CORE_ADDR
i386bsd_sigtramp_saved_pc (struct frame_info *frame)
{
int sc_pc_offset = gdbarch_tdep (current_gdbarch)->sc_pc_offset;
CORE_ADDR addr;
addr = i386bsd_sigcontext_addr (frame);
return read_memory_unsigned_integer (addr + i386bsd_sigcontext_pc_offset, 4);
return read_memory_unsigned_integer (addr + sc_pc_offset, 4);
}
/* Return the saved program counter for FRAME. */
CORE_ADDR
static CORE_ADDR
i386bsd_frame_saved_pc (struct frame_info *frame)
{
if (frame->signal_handler_caller)
@ -82,3 +80,168 @@ i386bsd_frame_saved_pc (struct frame_info *frame)
return read_memory_unsigned_integer (frame->frame + 4, 4);
}
/* Return the start address of the sigtramp routine. */
CORE_ADDR
i386bsd_sigtramp_start (CORE_ADDR pc)
{
return gdbarch_tdep (current_gdbarch)->sigtramp_start;
}
/* Return the end address of the sigtramp routine. */
CORE_ADDR
i386bsd_sigtramp_end (CORE_ADDR pc)
{
return gdbarch_tdep (current_gdbarch)->sigtramp_end;
}
/* Traditional BSD (4.3 BSD, still used for BSDI and 386BSD). */
/* From <machine/signal.h>. */
int i386bsd_sc_pc_offset = 20;
static void
i386bsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
set_gdbarch_pc_in_sigtramp (gdbarch, i386bsd_pc_in_sigtramp);
tdep->jb_pc_offset = 0;
tdep->sigtramp_saved_pc = i386bsd_sigtramp_saved_pc;
tdep->sigtramp_start = 0xfdbfdfc0;
tdep->sigtramp_end = 0xfdbfe000;
tdep->sc_pc_offset = i386bsd_sc_pc_offset;
}
/* NetBSD 1.0 or later. */
/* From <machine/signal.h>. */
int i386nbsd_sc_pc_offset = 44;
static void
i386nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Obviously NetBSD is BSD-based. */
i386bsd_init_abi (info, gdbarch);
/* NetBSD uses -freg-struct-return by default. */
tdep->struct_return = reg_struct_return;
/* NetBSD uses a different memory layout. */
tdep->sigtramp_start = 0xbfbfdf20;
tdep->sigtramp_end = 0xbfbfdff0;
/* NetBSD has a `struct sigcontext' that's different from the
origional 4.3 BSD. */
tdep->sc_pc_offset = i386nbsd_sc_pc_offset;
}
/* NetBSD ELF. */
static void
i386nbsdelf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* It's still NetBSD. */
i386nbsd_init_abi (info, gdbarch);
/* But ELF-based. */
i386_elf_init_abi (info, gdbarch);
/* NetBSD ELF uses -fpcc-struct-return by default. */
tdep->struct_return = pcc_struct_return;
/* We support the SSE registers on NetBSD ELF. */
tdep->num_xmm_regs = I386_NUM_XREGS - 1;
set_gdbarch_num_regs (gdbarch, I386_NUM_GREGS + I386_NUM_FREGS
+ I386_NUM_XREGS);
}
/* FreeBSD 3.0-RELEASE or later. */
CORE_ADDR i386fbsd_sigtramp_start = 0xbfbfdf20;
CORE_ADDR i386fbsd_sigtramp_end = 0xbfbfdff0;
static void
i386fbsdaout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Obviously FreeBSD is BSD-based. */
i386bsd_init_abi (info, gdbarch);
/* FreeBSD uses -freg-struct-return by default. */
tdep->struct_return = reg_struct_return;
/* FreeBSD uses a different memory layout. */
tdep->sigtramp_start = i386fbsd_sigtramp_start;
tdep->sigtramp_end = i386fbsd_sigtramp_end;
}
static void
i386fbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
/* It's almost identical to FreeBSD a.out. */
i386fbsdaout_init_abi (info, gdbarch);
/* Except that it uses ELF. */
i386_elf_init_abi (info, gdbarch);
}
/* FreeBSD 4.0-RELEASE or later. */
/* From <machine/signal.h>. */
int i386fbsd4_sc_pc_offset = 76;
static void
i386fbsd4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
/* Inherit stuff from older releases. We assume that FreeBSD
4.0-RELEASE always uses ELF. */
i386fbsd_init_abi (info, gdbarch);
/* FreeBSD 4.0 introduced a new `struct sigcontext'. */
tdep->sc_pc_offset = i386fbsd4_sc_pc_offset;
}
static enum gdb_osabi
i386bsd_aout_osabi_sniffer (bfd *abfd)
{
if (strcmp (bfd_get_target (abfd), "a.out-i386-netbsd") == 0)
return GDB_OSABI_NETBSD_AOUT;
if (strcmp (bfd_get_target (abfd), "a.out-i386-freebsd") == 0)
return GDB_OSABI_FREEBSD_AOUT;
return GDB_OSABI_UNKNOWN;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_i386bsd_tdep (void);
void
_initialize_i386bsd_tdep (void)
{
gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_aout_flavour,
i386bsd_aout_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_NETBSD_AOUT,
i386nbsd_init_abi);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_NETBSD_ELF,
i386nbsdelf_init_abi);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_FREEBSD_AOUT,
i386fbsdaout_init_abi);
gdbarch_register_osabi (bfd_arch_i386, GDB_OSABI_FREEBSD_ELF,
i386fbsd4_init_abi);
}

11
gdb/i386fbsd-nat.c
View File

@ -1,5 +1,5 @@
/* Native-dependent code for FreeBSD/i386.
Copyright 2001 Free Software Foundation, Inc.
Copyright 2001, 2002 Free Software Foundation, Inc.
This file is part of GDB.
@ -79,7 +79,7 @@ _initialize_i386fbsd_nat (void)
{
/* FreeBSD provides a kern.ps_strings sysctl that we can use to
locate the sigtramp. That way we can still recognize a sigtramp
if it's location is changed in a new kernel. Of course this is
if its location is changed in a new kernel. Of course this is
still based on the assumption that the sigtramp is placed
directly under the location where the program arguments and
environment can be found. */
@ -89,13 +89,16 @@ _initialize_i386fbsd_nat (void)
int ps_strings;
size_t len;
extern CORE_ADDR i386fbsd_sigtramp_start;
extern CORE_ADDR i386fbsd_sigtramp_end;
mib[0] = CTL_KERN;
mib[1] = KERN_PS_STRINGS;
len = sizeof (ps_strings);
if (sysctl (mib, 2, &ps_strings, &len, NULL, 0) == 0)
{
i386bsd_sigtramp_start = ps_strings - 128;
i386bsd_sigtramp_end = ps_strings;
i386fbsd_sigtramp_start = ps_strings - 128;
i386fbsd_sigtramp_end = ps_strings;
}
}
#endif

10
gdb/i386nbsd-tdep.c
View File

@ -137,16 +137,6 @@ static struct core_fns i386nbsd_elfcore_fns =
NULL /* next */
};
/* FIXME: should be multi-arch'd */
int
i386nbsd_aout_use_struct_convention (int gcc_p, struct type *type)
{
return !(TYPE_LENGTH (type) == 1
|| TYPE_LENGTH (type) == 2
|| TYPE_LENGTH (type) == 4
|| TYPE_LENGTH (type) == 8);
}
void
_initialize_i386nbsd_tdep (void)
{