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[binutils-gdb] [AArch64][5/8] GAS support BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC

From: Jiong Wang <jiwang at sourceware dot org>
To: bfd-cvs at sourceware dot org
Date: 11 Aug 2015 20:29:55 -0000
Subject: [binutils-gdb] [AArch64][5/8] GAS support BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a12fad50d28b9251893c6709ac4374773350c21a

commit a12fad50d28b9251893c6709ac4374773350c21a
Author: Jiong Wang <jiong.wang@arm.com>
Date:   Tue Aug 11 17:15:56 2015 +0100

    [AArch64][5/8] GAS support BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
    
    2015-08-11  Jiong Wang  <jiong.wang@arm.com>
    
    bfd/
      * reloc.c (BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC): New entry.
      * bfd-in2.h: Regenerate.
      * libbfd.h: Regenerate.
      * elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
      BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC.
    
    gas/
      * config/tc-aarch64.c (reloc_table): New relocation modifiers.
      (md_apply_fix): Support BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC.
      (aarch64_force_relocation): Likewise.
    
    gas/testsuite/
      * gas/aarch64/reloc-tlsldm_lo12_nc-1.s: New testcase.
      * gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.s: Likewise.
      * gas/aarch64/reloc-tlsldm_lo12_nc-1.d: New expectation file.
      * gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.d: Likewise.

Diff:
---
 bfd/ChangeLog                                            |  8 ++++++++
 bfd/bfd-in2.h                                            |  5 +++++
 bfd/elfnn-aarch64.c                                      | 15 +++++++++++++++
 bfd/libbfd.h                                             |  1 +
 bfd/reloc.c                                              |  6 ++++++
 gas/ChangeLog                                            |  6 ++++++
 gas/config/tc-aarch64.c                                  | 11 +++++++++++
 gas/testsuite/ChangeLog                                  |  7 +++++++
 gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-1.d       | 10 ++++++++++
 gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-1.s       |  5 +++++
 gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.d | 11 +++++++++++
 gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.s |  5 +++++
 12 files changed, 90 insertions(+)

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 01a29c8..6e12da3 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,13 @@
 2015-08-11  Jiong Wang  <jiong.wang@arm.com>
 
+	* reloc.c (BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC): New entry.
+	* bfd-in2.h: Regenerate.
+	* libbfd.h: Regenerate.
+	* elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
+	BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC.
+
+2015-08-11  Jiong Wang  <jiong.wang@arm.com>
+
 	* elfnn-aarch64.c (IS_AARCH64_TLS_RELOC): Recognize
 	BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21.
 	(aarch64_reloc_got_type): Likewise.
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 43e1324..350b955 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -5794,6 +5794,11 @@ BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21.  */
 /* AArch64 TLS INITIAL EXEC relocation.  */
   BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19,
 
+/* Unsigned 12 bit byte offset to global offset table entry for a symbols
+tls_index structure.  Used in conjunction with
+BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21.  */
+  BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC,
+
 /* GOT entry page address for AArch64 TLS Local Dynamic, used with ADRP
 instruction.  */
   BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21,
diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c
index ff56701..12c1220 100644
--- a/bfd/elfnn-aarch64.c
+++ b/bfd/elfnn-aarch64.c
@@ -1026,6 +1026,21 @@ static reloc_howto_type elfNN_aarch64_howto_table[] =
 	 0x1ffffc,		/* dst_mask */
 	 FALSE),		/* pcrel_offset */
 
+  /* ADD: GOT offset G(S) & 0xff8 [no overflow check] */
+  HOWTO (AARCH64_R (TLSLD_ADD_LO12_NC),	/* type */
+	 0,			/* rightshift */
+	 2,			/* size (0 = byte, 1 = short, 2 = long) */
+	 12,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 AARCH64_R_STR (TLSLD_ADD_LO12_NC),	/* name */
+	 FALSE,			/* partial_inplace */
+	 0xfff,			/* src_mask */
+	 0xfff,			/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+
   /* Get to the page for the GOT entry for the symbol
      (G(S) - P) using an ADRP instruction.  */
   HOWTO (AARCH64_R (TLSLD_ADR_PAGE21),	/* type */
diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index 03e9393..d6ed8fd 100644
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -2759,6 +2759,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
   "BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC",
   "BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC",
   "BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19",
+  "BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC",
   "BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21",
   "BFD_RELOC_AARCH64_TLSLD_ADR_PREL21",
   "BFD_RELOC_AARCH64_TLSLE_MOVW_TPREL_G2",
diff --git a/bfd/reloc.c b/bfd/reloc.c
index d6252c8..df22f9b 100644
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -6844,6 +6844,12 @@ ENUM
 ENUMDOC
   AArch64 TLS INITIAL EXEC relocation.
 ENUM
+  BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
+ENUMDOC
+  Unsigned 12 bit byte offset to global offset table entry for a symbols
+  tls_index structure.  Used in conjunction with
+  BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21.
+ENUM
   BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21
 ENUMDOC
   GOT entry page address for AArch64 TLS Local Dynamic, used with ADRP
diff --git a/gas/ChangeLog b/gas/ChangeLog
index a97108a..314735a 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,6 +1,12 @@
 2015-08-11  Jiong Wang  <jiong.wang@arm.com>
 
 	* config/tc-aarch64.c (reloc_table): New relocation modifiers.
+	(md_apply_fix): Support BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC.
+	(aarch64_force_relocation): Likewise.
+
+2015-08-11  Jiong Wang  <jiong.wang@arm.com>
+
+	* config/tc-aarch64.c (reloc_table): New relocation modifiers.
 	(md_apply_fix): Support BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21.
 	(aarch64_force_relocation): Likewise.
 
diff --git a/gas/config/tc-aarch64.c b/gas/config/tc-aarch64.c
index c01ec6d..a633b04 100644
--- a/gas/config/tc-aarch64.c
+++ b/gas/config/tc-aarch64.c
@@ -2513,6 +2513,15 @@ static struct reloc_table_entry reloc_table[] = {
    0,
    0},
 
+  /* 12 bit offset into the page containing GOT TLS entry for a symbol */
+  {"tlsldm_lo12_nc", 0,
+   0,				/* adr_type */
+   0,
+   0,
+   BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC,
+   0,
+   0},
+
   /* Get to the page containing GOT TLS entry for a symbol */
   {"gottprel", 0,
    0,				/* adr_type */
@@ -6778,6 +6787,7 @@ md_apply_fix (fixS * fixP, valueT * valP, segT seg)
     case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
     case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
     case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+    case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
     case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
     case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
     case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
@@ -6989,6 +6999,7 @@ aarch64_force_relocation (struct fix *fixp)
     case BFD_RELOC_AARCH64_TLSIE_LD32_GOTTPREL_LO12_NC:
     case BFD_RELOC_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC:
     case BFD_RELOC_AARCH64_TLSIE_LD_GOTTPREL_PREL19:
+    case BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC:
     case BFD_RELOC_AARCH64_TLSLD_ADR_PAGE21:
     case BFD_RELOC_AARCH64_TLSLD_ADR_PREL21:
     case BFD_RELOC_AARCH64_TLSLE_ADD_TPREL_HI12:
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index b790d4a..9449f1d 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,5 +1,12 @@
 2015-08-11  Jiong Wang  <jiong.wang@arm.com>
 
+	* gas/aarch64/reloc-tlsldm_lo12_nc-1.s: New testcase.
+	* gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.s: Likewise.
+	* gas/aarch64/reloc-tlsldm_lo12_nc-1.d: New expectation file.
+	* gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.d: Likewise.
+
+2015-08-11  Jiong Wang  <jiong.wang@arm.com>
+
 	* gas/aarch64/reloc-tlsldm-page-1.s: New testcase.
 	* gas/aarch64/reloc-tlsldm-page-ilp32-1.s: Likewise.
 	* gas/aarch64/reloc-tlsldm-page-1.d: New expectation file.
diff --git a/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-1.d b/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-1.d
new file mode 100644
index 0000000..9054036
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-1.d
@@ -0,0 +1,10 @@
+#objdump: -dr
+
+.*:     file format .*
+
+Disassembly of section \.text:
+
+0000000000000000 <.*>:
+   0:	91000000 	add	x0, x0, #0x0
+			0: R_AARCH64_TLSLD_ADD_LO12_NC	x
+
diff --git a/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-1.s b/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-1.s
new file mode 100644
index 0000000..676bbfc
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-1.s
@@ -0,0 +1,5 @@
+// Test file for AArch64 GAS -- reloc 519
+
+func:
+	// BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
+	add  x0, x0, #:tlsldm_lo12_nc:x
diff --git a/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.d b/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.d
new file mode 100644
index 0000000..f068cfb
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.d
@@ -0,0 +1,11 @@
+#as: -mabi=ilp32
+#objdump: -dr
+
+.*:     file format .*
+
+Disassembly of section \.text:
+
+00000000 <.*>:
+   0:	91000000 	add	x0, x0, #0x0
+			0: R_AARCH64_P32_TLSLD_ADD_LO12_NC	x
+
diff --git a/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.s b/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.s
new file mode 100644
index 0000000..2556276
--- /dev/null
+++ b/gas/testsuite/gas/aarch64/reloc-tlsldm_lo12_nc-ilp32-1.s
@@ -0,0 +1,5 @@
+// Test file for AArch64 GAS -- reloc 85
+
+func:
+	// BFD_RELOC_AARCH64_TLSLD_ADD_LO12_NC
+	add  x0, x0, #:tlsldm_lo12_nc:x
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