diff options
Diffstat (limited to 'gdb')
| -rw-r--r-- | gdb/ChangeLog | 11 | ||||
| -rw-r--r-- | gdb/arch-utils.c | 16 | ||||
| -rw-r--r-- | gdb/arch-utils.h | 9 | ||||
| -rw-r--r-- | gdb/gdbarch.c | 46 | ||||
| -rw-r--r-- | gdb/gdbarch.h | 17 | ||||
| -rwxr-xr-x | gdb/gdbarch.sh | 11 |
6 files changed, 110 insertions, 0 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index d7f0c2d..b310769 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,16 @@ 2014-12-12 Jan Kratochvil <jan.kratochvil@redhat.com> + * arch-utils.c (default_infcall_mmap) + (default_gcc_target_options): New functions. + * arch-utils.h (GDB_MMAP_PROT_READ, GDB_MMAP_PROT_WRITE) + (GDB_MMAP_PROT_EXEC): Define. + (default_infcall_mmap, default_gcc_target_options): Declare. + * gdbarch.h: Rebuild. + * gdbarch.c: Rebuild. + * gdbarch.sh (infcall_mmap, gcc_target_options): New methods. + +2014-12-12 Jan Kratochvil <jan.kratochvil@redhat.com> + * dummy-frame.c (struct dummy_frame) <dtor, dtor_data>: New fields. (pop_dummy_frame): Call the destructor if it exists. diff --git a/gdb/arch-utils.c b/gdb/arch-utils.c index 33d5543..3cd0a21 100644 --- a/gdb/arch-utils.c +++ b/gdb/arch-utils.c @@ -858,6 +858,22 @@ default_skip_permanent_breakpoint (struct regcache *regcache) regcache_write_pc (regcache, current_pc); } +CORE_ADDR +default_infcall_mmap (CORE_ADDR size, unsigned prot) +{ + error (_("This target does not support inferior memory allocation by mmap.")); +} + +/* -mcmodel=large is used so that no GOT (Global Offset Table) is needed to be + created in inferior memory by GDB (normally it is set by ld.so). */ + +char * +default_gcc_target_options (struct gdbarch *gdbarch) +{ + return xstrprintf ("-m%d%s", gdbarch_ptr_bit (gdbarch), + gdbarch_ptr_bit (gdbarch) == 64 ? " -mcmodel=large" : ""); +} + /* -Wmissing-prototypes */ extern initialize_file_ftype _initialize_gdbarch_utils; diff --git a/gdb/arch-utils.h b/gdb/arch-utils.h index 11e68e2..e1d2c4a 100644 --- a/gdb/arch-utils.h +++ b/gdb/arch-utils.h @@ -193,4 +193,13 @@ extern int default_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *ra module determines whether a breakpoint is permanent. */ extern void default_skip_permanent_breakpoint (struct regcache *regcache); +/* Symbols for gdbarch_infcall_mmap; their Linux PROT_* system + definitions would be dependent on compilation host. */ +#define GDB_MMAP_PROT_READ 0x1 /* Page can be read. */ +#define GDB_MMAP_PROT_WRITE 0x2 /* Page can be written. */ +#define GDB_MMAP_PROT_EXEC 0x4 /* Page can be executed. */ + +extern CORE_ADDR default_infcall_mmap (CORE_ADDR size, unsigned prot); +extern char *default_gcc_target_options (struct gdbarch *gdbarch); + #endif diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c index 132fff3..d815a1c 100644 --- a/gdb/gdbarch.c +++ b/gdb/gdbarch.c @@ -321,6 +321,8 @@ struct gdbarch gdbarch_insn_is_jump_ftype *insn_is_jump; gdbarch_auxv_parse_ftype *auxv_parse; gdbarch_vsyscall_range_ftype *vsyscall_range; + gdbarch_infcall_mmap_ftype *infcall_mmap; + gdbarch_gcc_target_options_ftype *gcc_target_options; }; /* Create a new ``struct gdbarch'' based on information provided by @@ -417,6 +419,8 @@ gdbarch_alloc (const struct gdbarch_info *info, gdbarch->insn_is_ret = default_insn_is_ret; gdbarch->insn_is_jump = default_insn_is_jump; gdbarch->vsyscall_range = default_vsyscall_range; + gdbarch->infcall_mmap = default_infcall_mmap; + gdbarch->gcc_target_options = default_gcc_target_options; /* gdbarch_alloc() */ return gdbarch; @@ -642,6 +646,8 @@ verify_gdbarch (struct gdbarch *gdbarch) /* Skip verify of insn_is_jump, invalid_p == 0 */ /* Skip verify of auxv_parse, has predicate. */ /* Skip verify of vsyscall_range, invalid_p == 0 */ + /* Skip verify of infcall_mmap, invalid_p == 0 */ + /* Skip verify of gcc_target_options, invalid_p == 0 */ buf = ui_file_xstrdup (log, &length); make_cleanup (xfree, buf); if (length > 0) @@ -912,6 +918,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file) "gdbarch_dump: frame_red_zone_size = %s\n", plongest (gdbarch->frame_red_zone_size)); fprintf_unfiltered (file, + "gdbarch_dump: gcc_target_options = <%s>\n", + host_address_to_string (gdbarch->gcc_target_options)); + fprintf_unfiltered (file, "gdbarch_dump: gdbarch_gcore_bfd_target_p() = %d\n", gdbarch_gcore_bfd_target_p (gdbarch)); fprintf_unfiltered (file, @@ -978,6 +987,9 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file) "gdbarch_dump: in_solib_return_trampoline = <%s>\n", host_address_to_string (gdbarch->in_solib_return_trampoline)); fprintf_unfiltered (file, + "gdbarch_dump: infcall_mmap = <%s>\n", + host_address_to_string (gdbarch->infcall_mmap)); + fprintf_unfiltered (file, "gdbarch_dump: gdbarch_info_proc_p() = %d\n", gdbarch_info_proc_p (gdbarch)); fprintf_unfiltered (file, @@ -4519,6 +4531,40 @@ set_gdbarch_vsyscall_range (struct gdbarch *gdbarch, gdbarch->vsyscall_range = vsyscall_range; } +CORE_ADDR +gdbarch_infcall_mmap (struct gdbarch *gdbarch, CORE_ADDR size, unsigned prot) +{ + gdb_assert (gdbarch != NULL); + gdb_assert (gdbarch->infcall_mmap != NULL); + if (gdbarch_debug >= 2) + fprintf_unfiltered (gdb_stdlog, "gdbarch_infcall_mmap called\n"); + return gdbarch->infcall_mmap (size, prot); +} + +void +set_gdbarch_infcall_mmap (struct gdbarch *gdbarch, + gdbarch_infcall_mmap_ftype infcall_mmap) +{ + gdbarch->infcall_mmap = infcall_mmap; +} + +char * +gdbarch_gcc_target_options (struct gdbarch *gdbarch) +{ + gdb_assert (gdbarch != NULL); + gdb_assert (gdbarch->gcc_target_options != NULL); + if (gdbarch_debug >= 2) + fprintf_unfiltered (gdb_stdlog, "gdbarch_gcc_target_options called\n"); + return gdbarch->gcc_target_options (gdbarch); +} + +void +set_gdbarch_gcc_target_options (struct gdbarch *gdbarch, + gdbarch_gcc_target_options_ftype gcc_target_options) +{ + gdbarch->gcc_target_options = gcc_target_options; +} + /* Keep a registry of per-architecture data-pointers required by GDB modules. */ diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h index ba4fe62..d086553 100644 --- a/gdb/gdbarch.h +++ b/gdb/gdbarch.h @@ -1390,6 +1390,23 @@ typedef int (gdbarch_vsyscall_range_ftype) (struct gdbarch *gdbarch, struct mem_ extern int gdbarch_vsyscall_range (struct gdbarch *gdbarch, struct mem_range *range); extern void set_gdbarch_vsyscall_range (struct gdbarch *gdbarch, gdbarch_vsyscall_range_ftype *vsyscall_range); +/* Allocate SIZE bytes of PROT protected page aligned memory in inferior. + PROT has GDB_MMAP_PROT_* bitmask format. + Throw an error if it is not possible. Returned address is always valid. */ + +typedef CORE_ADDR (gdbarch_infcall_mmap_ftype) (CORE_ADDR size, unsigned prot); +extern CORE_ADDR gdbarch_infcall_mmap (struct gdbarch *gdbarch, CORE_ADDR size, unsigned prot); +extern void set_gdbarch_infcall_mmap (struct gdbarch *gdbarch, gdbarch_infcall_mmap_ftype *infcall_mmap); + +/* Return string (caller has to use xfree for it) with options for GCC + to produce code for this target, typically "-m64", "-m32" or "-m31". + These options are put before CU's DW_AT_producer compilation options so that + they can override it. Method may also return NULL. */ + +typedef char * (gdbarch_gcc_target_options_ftype) (struct gdbarch *gdbarch); +extern char * gdbarch_gcc_target_options (struct gdbarch *gdbarch); +extern void set_gdbarch_gcc_target_options (struct gdbarch *gdbarch, gdbarch_gcc_target_options_ftype *gcc_target_options); + /* Definition for an unknown syscall, used basically in error-cases. */ #define UNKNOWN_SYSCALL (-1) diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh index 25544e3..8f4cd69 100755 --- a/gdb/gdbarch.sh +++ b/gdb/gdbarch.sh @@ -1076,6 +1076,17 @@ M:int:auxv_parse:gdb_byte **readptr, gdb_byte *endptr, CORE_ADDR *typep, CORE_AD # range with zero length is returned. Returns true if the vsyscall is # found, false otherwise. m:int:vsyscall_range:struct mem_range *range:range::default_vsyscall_range::0 + +# Allocate SIZE bytes of PROT protected page aligned memory in inferior. +# PROT has GDB_MMAP_PROT_* bitmask format. +# Throw an error if it is not possible. Returned address is always valid. +f:CORE_ADDR:infcall_mmap:CORE_ADDR size, unsigned prot:size, prot::default_infcall_mmap::0 + +# Return string (caller has to use xfree for it) with options for GCC +# to produce code for this target, typically "-m64", "-m32" or "-m31". +# These options are put before CU's DW_AT_producer compilation options so that +# they can override it. Method may also return NULL. +m:char *:gcc_target_options:void:::default_gcc_target_options::0 EOF } |