public inbox for binutils@sourceware.org
 help / color / mirror / Atom feed
From: Jan Beulich <jbeulich@suse.com>
To: Binutils <binutils@sourceware.org>
Cc: "H.J. Lu" <hjl.tools@gmail.com>, Indu Bhagat <indu.bhagat@oracle.com>
Subject: [PATCH] x86: adjust which Dwarf2 register numbers to use
Date: Fri, 9 Feb 2024 09:11:19 +0100	[thread overview]
Message-ID: <262f296e-673b-47f0-a764-276939161d64@suse.com> (raw)

Consumers can't know which execution mode is in effect for a certain
piece of code; they can only go from object file properties. Hence which
register numbers to encode ought to depend solely on object file type.

--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -5409,7 +5409,7 @@ ginsn_dw2_regnum (const reg_entry *ireg)
   if (ireg->reg_num == RegIP || ireg->reg_num == RegIZ)
     return GINSN_DW2_REGNUM_RSI_DUMMY;
 
-  dwarf_reg = ireg->dw2_regnum[flag_code >> 1];
+  dwarf_reg = ireg->dw2_regnum[object_64bit];
 
   if (dwarf_reg == Dw2Inval)
     {
@@ -17461,7 +17461,7 @@ tc_x86_parse_to_dw2regnum (expressionS *
       if ((addressT) exp->X_add_number < i386_regtab_size)
 	{
 	  exp->X_add_number = i386_regtab[exp->X_add_number]
-			      .dw2_regnum[flag_code >> 1];
+			      .dw2_regnum[object_64bit];
 	  if (exp->X_add_number != Dw2Inval)
 	    exp->X_op = O_constant;
 	}

             reply	other threads:[~2024-02-09  8:11 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-09  8:11 Jan Beulich [this message]
2024-02-15 22:22 ` Indu Bhagat
2024-02-16  7:26   ` Jan Beulich
2024-02-20 23:04     ` Indu Bhagat
2024-02-21  7:34       ` Jan Beulich

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=262f296e-673b-47f0-a764-276939161d64@suse.com \
    --to=jbeulich@suse.com \
    --cc=binutils@sourceware.org \
    --cc=hjl.tools@gmail.com \
    --cc=indu.bhagat@oracle.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).