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binutils: Add a new function to initialise DWARF register name state

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Adds a new API function init_dwarf_regnames_by_bfd_arch_and_mach to
initialise the register name state from a BFD architecture and machine
type.

There should be no user visible changes after this commit.

binutils/ChangeLog:

	* dwarf.c (init_dwarf_regnames_by_bfd_arch_and_mach): New
	function.
	* dwarf.h (init_dwarf_regnames_by_bfd_arch_and_mach): Declare.
	* objdump.c (dump_dwarf): Call new function instead of calling
	specific initialization routines.  Restrucure so that eh_addr_size
	is still calculated correctly.

Change-Id: I346d665d2079a18ec4d04bd41893d0e9dc05e4b3
This commit is contained in:
Andrew Burgess 2019-11-18 12:09:04 +00:00
parent 955ff7fcf8
commit 229a22cfd2
4 changed files with 63 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
binutils/ChangeLog
View File

@ -1,3 +1,12 @@
2019-11-22 Andrew Burgess <andrew.burgess@embecosm.com>
* dwarf.c (init_dwarf_regnames_by_bfd_arch_and_mach): New
function.
* dwarf.h (init_dwarf_regnames_by_bfd_arch_and_mach): Declare.
* objdump.c (dump_dwarf): Call new function instead of calling
specific initialization routines. Restrucure so that eh_addr_size
is still calculated correctly.
2019-11-22 Andrew Burgess <andrew.burgess@embecosm.com>
* dwarf.c (init_dwarf_regnames): Renamed to...

48
binutils/dwarf.c
View File

@ -7625,6 +7625,54 @@ init_dwarf_regnames_by_elf_machine_code (unsigned int e_machine)
}
}
/* Initialize the DWARF register name lookup state based on the
architecture and specific machine type of a BFD. */
void
init_dwarf_regnames_by_bfd_arch_and_mach (enum bfd_architecture arch,
unsigned long mach)
{
switch (arch)
{
case bfd_arch_i386:
switch (mach)
{
case bfd_mach_x86_64:
case bfd_mach_x86_64_intel_syntax:
case bfd_mach_x86_64_nacl:
case bfd_mach_x64_32:
case bfd_mach_x64_32_intel_syntax:
case bfd_mach_x64_32_nacl:
init_dwarf_regnames_x86_64 ();
break;
default:
init_dwarf_regnames_i386 ();
break;
}
break;
case bfd_arch_iamcu:
init_dwarf_regnames_iamcu ();
break;
case bfd_arch_aarch64:
init_dwarf_regnames_aarch64();
break;
case bfd_arch_s390:
init_dwarf_regnames_s390 ();
break;
case bfd_arch_riscv:
init_dwarf_regnames_riscv ();
break;
default:
break;
}
}
static const char *
regname (unsigned int regno, int row)
{

2
binutils/dwarf.h
View File

@ -226,6 +226,8 @@ extern unsigned long dwarf_start_die;
extern int dwarf_check;
extern void init_dwarf_regnames_by_elf_machine_code (unsigned int);
extern void init_dwarf_regnames_by_bfd_arch_and_mach (enum bfd_architecture arch,
unsigned long mach);
extern void init_dwarf_regnames_i386 (void);
extern void init_dwarf_regnames_iamcu (void);
extern void init_dwarf_regnames_x86_64 (void);

40
binutils/objdump.c
View File

@ -2975,44 +2975,8 @@ dump_dwarf (bfd *abfd)
return;
}
eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
switch (bfd_get_arch (abfd))
{
case bfd_arch_i386:
switch (bfd_get_mach (abfd))
{
case bfd_mach_x86_64:
case bfd_mach_x86_64_intel_syntax:
case bfd_mach_x86_64_nacl:
case bfd_mach_x64_32:
case bfd_mach_x64_32_intel_syntax:
case bfd_mach_x64_32_nacl:
init_dwarf_regnames_x86_64 ();
break;
default:
init_dwarf_regnames_i386 ();
break;
}
break;
case bfd_arch_iamcu:
init_dwarf_regnames_iamcu ();
break;
case bfd_arch_aarch64:
init_dwarf_regnames_aarch64();
break;
case bfd_arch_s390:
init_dwarf_regnames_s390 ();
break;
case bfd_arch_riscv:
init_dwarf_regnames_riscv ();
break;
case bfd_arch_s12z:
/* S12Z has a 24 bit address space. But the only known
producer of dwarf_info encodes addresses into 32 bits. */
@ -3020,9 +2984,13 @@ dump_dwarf (bfd *abfd)
break;
default:
eh_addr_size = bfd_arch_bits_per_address (abfd) / 8;
break;
}
init_dwarf_regnames_by_bfd_arch_and_mach (bfd_get_arch (abfd),
bfd_get_mach (abfd));
bfd_map_over_sections (abfd, dump_dwarf_section, NULL);
}