bfd: Add support for LoongArch64 EFI (efi-*-loongarch64).

This adds support for efi-loongarch64 by virtue of adding a new PEI target
pei-loongarch64.  This is not a full target and only exists to support EFI at
this time.

This means that this target does not support relocation processing and is mostly
a container format.  This format has been added to elf based loongarch64 targets
such that efi images can be made natively on Linux.

However this target is not valid for use with gas but only with objcopy.

We should't limit addresses to 32-bits for 64-bit vma, otherwise there will be
"RVA truncated" error when using objcopy on loongarch64.

With these changes the resulting file is recognized as an efi image.

Any magic number is based on the Microsoft PE specification [1].

The test results are as follows:
$ make check-binutils RUNTESTFLAGS='loongarch64.exp'
  PASS: Check if efi app format is recognized

$ objdump -h -f tmpdir/loongarch64copy.o
  tmpdir/loongarch64copy.o:     file format pei-loongarch64
  architecture: Loongarch64, flags 0x00000132:
  EXEC_P, HAS_SYMS, HAS_LOCALS, D_PAGED
  start address 0x0000000000000000

  Sections:
  Idx Name          Size      VMA               LMA               File off  Algn
    0 .text         0000003c  00000000200000b0  00000000200000b0  00000200  2**2
                    CONTENTS, ALLOC, LOAD, READONLY, CODE

[1] https://docs.microsoft.com/en-us/windows/win32/debug/pe-format

bfd:
  * .gitignore (pe-loongarch64igen.c): New.
  * Makefile.am (pei-loongarch64.lo, pe-loongarch64igen.lo, pei-loongarch64.c,
  pe-loongarch64igen.c): Add support.
  * Makefile.in: Likewise.
  * bfd.c (bfd_get_sign_extend_vma): Add pei-loongarch64.
  * coff-loongarch64.c: New file.
  * coffcode.h (coff_set_arch_mach_hook, coff_set_flags,
  coff_write_object_contents) Add loongarch64 (loongarch64_pei_vec) support.
  * config.bfd: Likewise.
  * configure: Likewise.
  * configure.ac: Likewise.
  * libpei.h (GET_OPTHDR_IMAGE_BASE, PUT_OPTHDR_IMAGE_BASE,
  GET_OPTHDR_SIZE_OF_STACK_RESERVE, PUT_OPTHDR_SIZE_OF_STACK_RESERVE,
  GET_OPTHDR_SIZE_OF_STACK_COMMIT, PUT_OPTHDR_SIZE_OF_STACK_COMMIT,
  GET_OPTHDR_SIZE_OF_HEAP_RESERVE, PUT_OPTHDR_SIZE_OF_HEAP_RESERVE,
  GET_OPTHDR_SIZE_OF_HEAP_COMMIT, PUT_OPTHDR_SIZE_OF_HEAP_COMMIT,
  GET_PDATA_ENTRY, _bfd_peLoongArch64_bfd_copy_private_bfd_data_common,
  _bfd_peLoongArch64_bfd_copy_private_section_data,
  _bfd_peLoongArch64_get_symbol_info, _bfd_peLoongArch64_only_swap_filehdr_out,
  _bfd_peLoongArch64_print_private_bfd_data_common,
  _bfd_peLoongArch64i_final_link_postscript,
  _bfd_peLoongArch64i_only_swap_filehdr_out, _bfd_peLoongArch64i_swap_aouthdr_in,
  _bfd_peLoongArch64i_swap_aouthdr_out, _bfd_peLoongArch64i_swap_aux_in,
  _bfd_peLoongArch64i_swap_aux_out, _bfd_peLoongArch64i_swap_lineno_in,
  _bfd_peLoongArch64i_swap_lineno_out, _bfd_peLoongArch64i_swap_scnhdr_out,
  _bfd_peLoongArch64i_swap_sym_in, _bfd_peLoongArch64i_swap_sym_out,
  _bfd_peLoongArch64i_swap_debugdir_in, _bfd_peLoongArch64i_swap_debugdir_out,
  _bfd_peLoongArch64i_write_codeview_record,
  _bfd_peLoongArch64i_slurp_codeview_record,
  _bfd_peLoongArch64_print_ce_compressed_pdata): New.
  * peXXigen.c (_bfd_XXi_swap_aouthdr_in, _bfd_XXi_swap_aouthdr_out,
  _bfd_XXi_swap_scnhdr_out, pe_print_pdata, _bfd_XX_print_private_bfd_data_common,
  _bfd_XX_bfd_copy_private_section_data, _bfd_XXi_final_link_postscript):
  Support COFF_WITH_peLoongArch64,
  * pei-loongarch64.c: New file.
  * peicode.h (coff_swap_scnhdr_in, pe_ILF_build_a_bfd, pe_ILF_object_p):
  Support COFF_WITH_peLoongArch64.
  (jtab): Add dummy entry that traps.
  * targets.c (loongarch64_pei_vec): New.

binutils
  * testsuite/binutils-all/loongarch64/loongarch64.exp: New file.
  * testsuite/binutils-all/loongarch64/pei-loongarch64.d: New test.
  * testsuite/binutils-all/loongarch64/pei-loongarch64.s: New test.

include
  * coff/loongarch64.h: New file.
  * coff/pe.h (IMAGE_FILE_MACHINE_LOONGARCH64): New.

Signed-off-by: Youling Tang <tangyouling@loongson.cn>

1 files changed, 28 insertions, 21 deletions

diff --git a/bfd/peXXigen.c b/bfd/peXXigen.c
index 5ab0938..a7b8571 100644
--- a/bfd/peXXigen.c
+++ b/bfd/peXXigen.c
@@ -60,9 +60,9 @@
    on this code has a chance of getting something accomplished without
    wasting too much time.  */
 
-/* This expands into COFF_WITH_pe, COFF_WITH_pep, COFF_WITH_pex64 or
-   COFF_WITH_peAArch64 depending on whether we're compiling for straight
-   PE or PE+.  */
+/* This expands into COFF_WITH_pe, COFF_WITH_pep, COFF_WITH_pex64,
+   COFF_WITH_peAArch64 or COFF_WITH_peLoongArch64 depending on whether we're
+   compiling for straight PE or PE+.  */
 #define COFF_WITH_XX
 
 #include "sysdep.h"
@@ -86,6 +86,8 @@
 # include "coff/ia64.h"
 #elif defined COFF_WITH_peAArch64
 # include "coff/aarch64.h"
+#elif defined COFF_WITH_peLoongArch64
+# include "coff/loongarch64.h"
 #else
 # include "coff/i386.h"
 #endif
@@ -95,7 +97,7 @@
 #include "libpei.h"
 #include "safe-ctype.h"
 
-#if defined COFF_WITH_pep || defined COFF_WITH_pex64 || defined COFF_WITH_peAArch64
+#if defined COFF_WITH_pep || defined COFF_WITH_pex64 || defined COFF_WITH_peAArch64 || defined COFF_WITH_peLoongArch64
 # undef AOUTSZ
 # define AOUTSZ		PEPAOUTSZ
 # define PEAOUTHDR	PEPAOUTHDR
@@ -472,7 +474,7 @@ _bfd_XXi_swap_aouthdr_in (bfd * abfd,
   aouthdr_int->text_start =
     GET_AOUTHDR_TEXT_START (abfd, aouthdr_ext->text_start);
 
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
   /* PE32+ does not have data_start member!  */
   aouthdr_int->data_start =
     GET_AOUTHDR_DATA_START (abfd, aouthdr_ext->data_start);
@@ -558,7 +560,7 @@ _bfd_XXi_swap_aouthdr_in (bfd * abfd,
   if (aouthdr_int->entry)
     {
       aouthdr_int->entry += a->ImageBase;
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
       aouthdr_int->entry &= 0xffffffff;
 #endif
     }
@@ -566,12 +568,12 @@ _bfd_XXi_swap_aouthdr_in (bfd * abfd,
   if (aouthdr_int->tsize)
     {
       aouthdr_int->text_start += a->ImageBase;
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
       aouthdr_int->text_start &= 0xffffffff;
 #endif
     }
 
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
   /* PE32+ does not have data_start member!  */
   if (aouthdr_int->dsize)
     {
@@ -631,7 +633,7 @@ _bfd_XXi_swap_aouthdr_out (bfd * abfd, void * in, void * out)
   if (aouthdr_in->tsize)
     {
       aouthdr_in->text_start -= ib;
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
       aouthdr_in->text_start &= 0xffffffff;
 #endif
     }
@@ -639,7 +641,7 @@ _bfd_XXi_swap_aouthdr_out (bfd * abfd, void * in, void * out)
   if (aouthdr_in->dsize)
     {
       aouthdr_in->data_start -= ib;
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
       aouthdr_in->data_start &= 0xffffffff;
 #endif
     }
@@ -647,7 +649,7 @@ _bfd_XXi_swap_aouthdr_out (bfd * abfd, void * in, void * out)
   if (aouthdr_in->entry)
     {
       aouthdr_in->entry -= ib;
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
       aouthdr_in->entry &= 0xffffffff;
 #endif
     }
@@ -761,7 +763,7 @@ _bfd_XXi_swap_aouthdr_out (bfd * abfd, void * in, void * out)
   PUT_AOUTHDR_TEXT_START (abfd, aouthdr_in->text_start,
 			  aouthdr_out->standard.text_start);
 
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
   /* PE32+ does not have data_start member!  */
   PUT_AOUTHDR_DATA_START (abfd, aouthdr_in->data_start,
 			  aouthdr_out->standard.data_start);
@@ -946,9 +948,14 @@ _bfd_XXi_swap_scnhdr_out (bfd * abfd, void * in, void * out)
   if (scnhdr_int->s_vaddr < pe_data (abfd)->pe_opthdr.ImageBase)
     _bfd_error_handler (_("%pB:%.8s: section below image base"),
                         abfd, scnhdr_int->s_name);
+  /* Do not compare lower 32-bits for 64-bit vma.  */
+#if !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
   else if(ss != (ss & 0xffffffff))
     _bfd_error_handler (_("%pB:%.8s: RVA truncated"), abfd, scnhdr_int->s_name);
   PUT_SCNHDR_VADDR (abfd, ss & 0xffffffff, scnhdr_ext->s_vaddr);
+#else
+  PUT_SCNHDR_VADDR (abfd, ss, scnhdr_ext->s_vaddr);
+#endif
 
   /* NT wants the size data to be rounded up to the next
      NT_FILE_ALIGNMENT, but zero if it has no content (as in .bss,
@@ -1813,7 +1820,7 @@ pe_print_edata (bfd * abfd, void * vfile)
 static bool
 pe_print_pdata (bfd * abfd, void * vfile)
 {
-#if defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
 # define PDATA_ROW_SIZE	(3 * 8)
 #else
 # define PDATA_ROW_SIZE	(5 * 4)
@@ -1840,7 +1847,7 @@ pe_print_pdata (bfd * abfd, void * vfile)
 
   fprintf (file,
 	   _("\nThe Function Table (interpreted .pdata section contents)\n"));
-#if defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
   fprintf (file,
 	   _(" vma:\t\t\tBegin Address    End Address      Unwind Info\n"));
 #else
@@ -1877,7 +1884,7 @@ pe_print_pdata (bfd * abfd, void * vfile)
       bfd_vma eh_handler;
       bfd_vma eh_data;
       bfd_vma prolog_end_addr;
-#if !defined(COFF_WITH_pep) || defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) || defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64) || defined(COFF_WITH_peLoongArch64)
       int em_data;
 #endif
 
@@ -1895,7 +1902,7 @@ pe_print_pdata (bfd * abfd, void * vfile)
 	/* We are probably into the padding of the section now.  */
 	break;
 
-#if !defined(COFF_WITH_pep) || defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) || defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64) || defined(COFF_WITH_peLoongArch64)
       em_data = ((eh_handler & 0x1) << 2) | (prolog_end_addr & 0x3);
 #endif
       eh_handler &= ~(bfd_vma) 0x3;
@@ -1906,7 +1913,7 @@ pe_print_pdata (bfd * abfd, void * vfile)
       bfd_fprintf_vma (abfd, file, begin_addr); fputc (' ', file);
       bfd_fprintf_vma (abfd, file, end_addr); fputc (' ', file);
       bfd_fprintf_vma (abfd, file, eh_handler);
-#if !defined(COFF_WITH_pep) || defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) || defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64) || defined(COFF_WITH_peLoongArch64)
       fputc (' ', file);
       bfd_fprintf_vma (abfd, file, eh_data); fputc (' ', file);
       bfd_fprintf_vma (abfd, file, prolog_end_addr);
@@ -2797,7 +2804,7 @@ _bfd_XX_print_private_bfd_data_common (bfd * abfd, void * vfile)
   bfd_fprintf_vma (abfd, file, i->AddressOfEntryPoint);
   fprintf (file, "\nBaseOfCode\t\t");
   bfd_fprintf_vma (abfd, file, i->BaseOfCode);
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
   /* PE32+ does not have BaseOfData member!  */
   fprintf (file, "\nBaseOfData\t\t");
   bfd_fprintf_vma (abfd, file, i->BaseOfData);
@@ -3112,7 +3119,7 @@ _bfd_XX_get_symbol_info (bfd * abfd, asymbol *symbol, symbol_info *ret)
   coff_get_symbol_info (abfd, symbol, ret);
 }
 
-#if !defined(COFF_WITH_pep) && (defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64))
+#if !defined(COFF_WITH_pep) && (defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64) || defined(COFF_WITH_peLoongArch64))
 static int
 sort_x64_pdata (const void *l, const void *r)
 {
@@ -4531,7 +4538,7 @@ _bfd_XXi_final_link_postscript (bfd * abfd, struct coff_final_link_info *pfinfo)
 	the TLS data directory consists of 4 pointers, followed
 	by two 4-byte integer. This implies that the total size
 	is different for 32-bit and 64-bit executables.  */
-#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64)
+#if !defined(COFF_WITH_pep) && !defined(COFF_WITH_pex64) && !defined(COFF_WITH_peAArch64) && !defined(COFF_WITH_peLoongArch64)
       pe_data (abfd)->pe_opthdr.DataDirectory[PE_TLS_TABLE].Size = 0x18;
 #else
       pe_data (abfd)->pe_opthdr.DataDirectory[PE_TLS_TABLE].Size = 0x28;
@@ -4540,7 +4547,7 @@ _bfd_XXi_final_link_postscript (bfd * abfd, struct coff_final_link_info *pfinfo)
 
 /* If there is a .pdata section and we have linked pdata finally, we
      need to sort the entries ascending.  */
-#if !defined(COFF_WITH_pep) && (defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64))
+#if !defined(COFF_WITH_pep) && (defined(COFF_WITH_pex64) || defined(COFF_WITH_peAArch64) || defined(COFF_WITH_peLoongArch64))
   {
     asection *sec = bfd_get_section_by_name (abfd, ".pdata");