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From: Jan Beulich <jbeulich@sourceware.org>
To: bfd-cvs@sourceware.org
Subject: [binutils-gdb] x86: restore masking of displacement kinds
Date: Mon,  4 Jul 2022 06:33:05 +0000 (GMT)	[thread overview]
Message-ID: <20220704063305.BEBCC3857B82@sourceware.org> (raw)

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=02b83698ef04a33a8c606efeceb8fe7cd9a9b344

commit 02b83698ef04a33a8c606efeceb8fe7cd9a9b344
Author: Jan Beulich <jbeulich@suse.com>
Date:   Mon Jul 4 08:32:20 2022 +0200

    x86: restore masking of displacement kinds
    
    Commit 7d5e4556a375 rendered the check near the end of what is now
    i386_finalize_displacement() entirely dead for AT&T mode, since for
    operands involving a displacement .unspecified will always be set. But
    the logic there is bogus anyway - Intel syntax operand size specifiers
    are of no interest there either. The only thing which matters in the
    "displacement only" determination is .baseindex.
    
    Of course when masking displacement kinds we should not at the same time
    also mask off other attributes.
    
    Furthermore the type mask returned by lex_got() also needs to be
    adjusted: The only case where we want Disp32 (rather than Disp32S) is
    when dealing with 32-bit addressing mode in 64-bit code.

Diff:
---
 gas/config/tc-i386.c | 31 +++++++++++++++----------------
 opcodes/i386-gen.c   | 12 ++++++------
 opcodes/i386-init.h  | 12 ++++++------
 3 files changed, 27 insertions(+), 28 deletions(-)

diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 8b245cc4d34..4cb7f179f4a 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -10380,7 +10380,7 @@ lex_got (enum bfd_reloc_code_real *rel,
       OPERAND_TYPE_IMM64, true },
     { STRING_COMMA_LEN ("PLT"),      { BFD_RELOC_386_PLT32,
 				       BFD_RELOC_X86_64_PLT32    },
-      OPERAND_TYPE_IMM32_32S_DISP32, false },
+      OPERAND_TYPE_IMM32_32S_DISP32S, false },
     { STRING_COMMA_LEN ("GOTPLT"),   { _dummy_first_bfd_reloc_code_real,
 				       BFD_RELOC_X86_64_GOTPLT64 },
       OPERAND_TYPE_IMM64_DISP64, true },
@@ -10389,28 +10389,28 @@ lex_got (enum bfd_reloc_code_real *rel,
       OPERAND_TYPE_IMM64_DISP64, true },
     { STRING_COMMA_LEN ("GOTPCREL"), { _dummy_first_bfd_reloc_code_real,
 				       BFD_RELOC_X86_64_GOTPCREL },
-      OPERAND_TYPE_IMM32_32S_DISP32, true },
+      OPERAND_TYPE_IMM32_32S_DISP32S, true },
     { STRING_COMMA_LEN ("TLSGD"),    { BFD_RELOC_386_TLS_GD,
 				       BFD_RELOC_X86_64_TLSGD    },
-      OPERAND_TYPE_IMM32_32S_DISP32, true },
+      OPERAND_TYPE_IMM32_32S_DISP32S, true },
     { STRING_COMMA_LEN ("TLSLDM"),   { BFD_RELOC_386_TLS_LDM,
 				       _dummy_first_bfd_reloc_code_real },
       OPERAND_TYPE_NONE, true },
     { STRING_COMMA_LEN ("TLSLD"),    { _dummy_first_bfd_reloc_code_real,
 				       BFD_RELOC_X86_64_TLSLD    },
-      OPERAND_TYPE_IMM32_32S_DISP32, true },
+      OPERAND_TYPE_IMM32_32S_DISP32S, true },
     { STRING_COMMA_LEN ("GOTTPOFF"), { BFD_RELOC_386_TLS_IE_32,
 				       BFD_RELOC_X86_64_GOTTPOFF },
-      OPERAND_TYPE_IMM32_32S_DISP32, true },
+      OPERAND_TYPE_IMM32_32S_DISP32S, true },
     { STRING_COMMA_LEN ("TPOFF"),    { BFD_RELOC_386_TLS_LE_32,
 				       BFD_RELOC_X86_64_TPOFF32  },
-      OPERAND_TYPE_IMM32_32S_64_DISP32_64, true },
+      OPERAND_TYPE_IMM32_32S_64_DISP32S_64, true },
     { STRING_COMMA_LEN ("NTPOFF"),   { BFD_RELOC_386_TLS_LE,
 				       _dummy_first_bfd_reloc_code_real },
       OPERAND_TYPE_NONE, true },
     { STRING_COMMA_LEN ("DTPOFF"),   { BFD_RELOC_386_TLS_LDO_32,
 				       BFD_RELOC_X86_64_DTPOFF32 },
-      OPERAND_TYPE_IMM32_32S_64_DISP32_64, true },
+      OPERAND_TYPE_IMM32_32S_64_DISP32S_64, true },
     { STRING_COMMA_LEN ("GOTNTPOFF"),{ BFD_RELOC_386_TLS_GOTIE,
 				       _dummy_first_bfd_reloc_code_real },
       OPERAND_TYPE_NONE, true },
@@ -10419,17 +10419,17 @@ lex_got (enum bfd_reloc_code_real *rel,
       OPERAND_TYPE_NONE, true },
     { STRING_COMMA_LEN ("GOT"),      { BFD_RELOC_386_GOT32,
 				       BFD_RELOC_X86_64_GOT32    },
-      OPERAND_TYPE_IMM32_32S_64_DISP32, true },
+      OPERAND_TYPE_IMM32_32S_64_DISP32S, true },
     { STRING_COMMA_LEN ("TLSDESC"),  { BFD_RELOC_386_TLS_GOTDESC,
 				       BFD_RELOC_X86_64_GOTPC32_TLSDESC },
-      OPERAND_TYPE_IMM32_32S_DISP32, true },
+      OPERAND_TYPE_IMM32_32S_DISP32S, true },
     { STRING_COMMA_LEN ("TLSCALL"),  { BFD_RELOC_386_TLS_DESC_CALL,
 				       BFD_RELOC_X86_64_TLSDESC_CALL },
-      OPERAND_TYPE_IMM32_32S_DISP32, true },
+      OPERAND_TYPE_IMM32_32S_DISP32S, true },
 #else /* TE_PE */
     { STRING_COMMA_LEN ("SECREL32"), { BFD_RELOC_32_SECREL,
 				       BFD_RELOC_32_SECREL },
-      OPERAND_TYPE_IMM32_32S_64_DISP32_64, false },
+      OPERAND_TYPE_IMM32_32S_64_DISP32S_64, false },
 #endif
   };
   char *cp;
@@ -11143,7 +11143,6 @@ static int
 i386_finalize_displacement (segT exp_seg ATTRIBUTE_UNUSED, expressionS *exp,
 			    i386_operand_type types, const char *disp_start)
 {
-  i386_operand_type bigdisp;
   int ret = 1;
 
   /* We do this to make sure that the section symbol is in
@@ -11208,10 +11207,10 @@ i386_finalize_displacement (segT exp_seg ATTRIBUTE_UNUSED, expressionS *exp,
     i.types[this_operand].bitfield.disp8 = 1;
 
   /* Check if this is a displacement only operand.  */
-  bigdisp = operand_type_and_not (i.types[this_operand], anydisp);
-  if (operand_type_all_zero (&bigdisp))
-    i.types[this_operand] = operand_type_and (i.types[this_operand],
-					      types);
+  if (!i.types[this_operand].bitfield.baseindex)
+    i.types[this_operand] =
+      operand_type_or (operand_type_and_not (i.types[this_operand], anydisp),
+		       operand_type_and (i.types[this_operand], types));
 
   return ret;
 }
diff --git a/opcodes/i386-gen.c b/opcodes/i386-gen.c
index d18a7d27545..1fe59e6cc14 100644
--- a/opcodes/i386-gen.c
+++ b/opcodes/i386-gen.c
@@ -529,14 +529,14 @@ static initializer operand_type_init[] =
     "Imm16|Imm32|Imm32S" },
   { "OPERAND_TYPE_IMM32_64",
     "Imm32|Imm64" },
-  { "OPERAND_TYPE_IMM32_32S_DISP32",
-    "Imm32|Imm32S|Disp32" },
+  { "OPERAND_TYPE_IMM32_32S_DISP32S",
+    "Imm32|Imm32S|Disp32S" },
   { "OPERAND_TYPE_IMM64_DISP64",
     "Imm64|Disp64" },
-  { "OPERAND_TYPE_IMM32_32S_64_DISP32",
-    "Imm32|Imm32S|Imm64|Disp32" },
-  { "OPERAND_TYPE_IMM32_32S_64_DISP32_64",
-    "Imm32|Imm32S|Imm64|Disp32|Disp64" },
+  { "OPERAND_TYPE_IMM32_32S_64_DISP32S",
+    "Imm32|Imm32S|Imm64|Disp32S" },
+  { "OPERAND_TYPE_IMM32_32S_64_DISP32S_64",
+    "Imm32|Imm32S|Imm64|Disp32S|Disp64" },
   { "OPERAND_TYPE_ANYIMM",
     "Imm1|Imm8|Imm8S|Imm16|Imm32|Imm32S|Imm64" },
 };
diff --git a/opcodes/i386-init.h b/opcodes/i386-init.h
index df2f7bcd498..84ed54e2d14 100644
--- a/opcodes/i386-init.h
+++ b/opcodes/i386-init.h
@@ -1964,20 +1964,20 @@
   { { 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
       0, 0, 0, 0, 0, 0, 0 } }
 
-#define OPERAND_TYPE_IMM32_32S_DISP32 \
-  { { 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, \
+#define OPERAND_TYPE_IMM32_32S_DISP32S \
+  { { 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, \
       0, 0, 0, 0, 0, 0, 0 } }
 
 #define OPERAND_TYPE_IMM64_DISP64 \
   { { 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, \
       0, 0, 0, 0, 0, 0, 0 } }
 
-#define OPERAND_TYPE_IMM32_32S_64_DISP32 \
-  { { 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, \
+#define OPERAND_TYPE_IMM32_32S_64_DISP32S \
+  { { 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, \
       0, 0, 0, 0, 0, 0, 0 } }
 
-#define OPERAND_TYPE_IMM32_32S_64_DISP32_64 \
-  { { 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, \
+#define OPERAND_TYPE_IMM32_32S_64_DISP32S_64 \
+  { { 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, \
       0, 0, 0, 0, 0, 0, 0 } }
 
 #define OPERAND_TYPE_ANYIMM \


                 reply	other threads:[~2022-07-04  6:33 UTC|newest]

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