From: Julian Waters <tanksherman27@gmail.com>
To: binutils@sourceware.org
Subject: Re: [PATCH] Reimplement the .seh_scope directive
Date: Mon, 3 Jul 2023 11:22:40 +0800 [thread overview]
Message-ID: <CAP2b4GMVuEsPJdGpW1nY8BSZ-DL4F37rL7J89Ox5gWY7Jehong@mail.gmail.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 2663 bytes --]
A second revision of the patch, with a small bugfix
From 89463e94572a022b55c793d299857f85afadd2ff Mon Sep 17 00:00:00 2001
From: TheShermanTanker <tanksherman27@gmail.com>
Date: Mon, 3 Jul 2023 10:42:18 +0800
Subject: [PATCH] Reimplement the .seh_scope directive
---
gas/config/obj-coff-seh.c | 20 ++++++++++++++++++++
gas/config/obj-coff-seh.h | 8 +++++++-
2 files changed, 27 insertions(+), 1 deletion(-)
diff --git a/gas/config/obj-coff-seh.c b/gas/config/obj-coff-seh.c
index 7b4486a..87eed0f 100644
--- a/gas/config/obj-coff-seh.c
+++ b/gas/config/obj-coff-seh.c
@@ -388,6 +388,20 @@ obj_coff_seh_handlerdata (int what ATTRIBUTE_UNUSED)
switch_xdata (seh_ctx_cur->subsection + 1, seh_ctx_cur->code_seg);
}
+static void obj_coff_seh_scope (int what)
+{
+ if (!verify_context_and_target (".seh_scope", seh_kind_x64))
+ return;
+
+ segT seg = now_seg;
+ int subseg = now_subseg;
+
+ seh_ctx_cur->scopes++;
+ switch_xdata (seh_ctx_cur->subsection + 1, seh_ctx_cur->code_seg);
+ s_rva (4);
+ subseg_set(seg, subseg);
+}
+
/* Mark end of current context. */
static void
@@ -436,6 +450,8 @@ obj_coff_seh_proc (int what ATTRIBUTE_UNUSED)
seh_ctx_cur = XCNEW (seh_context);
+ seh_ctx_cur->scopes = 0;
+
seh_ctx_cur->code_seg = now_seg;
if (seh_get_target_kind () == seh_kind_x64)
@@ -899,6 +915,10 @@ seh_x64_write_function_xdata (seh_context *c)
emit_expr (&c->handler, 4);
}
+ if (c->scopes > 0) {
+ out_four (c->scopes);
+ }
+
/* Handler data will be tacked in here by subsections. */
}
diff --git a/gas/config/obj-coff-seh.h b/gas/config/obj-coff-seh.h
index 8d77bac..7c92921 100644
--- a/gas/config/obj-coff-seh.h
+++ b/gas/config/obj-coff-seh.h
@@ -57,6 +57,7 @@
.seh_savexmm
.seh_pushframe
.seh_code
+ .seh_scope
*/
/* architecture specific pdata/xdata handling. */
@@ -75,7 +76,8 @@
{"seh_no32", obj_coff_seh_32, 0}, \
{"seh_handler", obj_coff_seh_handler, 0}, \
{"seh_code", obj_coff_seh_code, 0}, \
- {"seh_handlerdata", obj_coff_seh_handlerdata, 0},
+ {"seh_handlerdata", obj_coff_seh_handlerdata, 0}, \
+ {"seh_scope", obj_coff_seh_scope, 0},
/* Type definitions. */
@@ -128,6 +130,9 @@ typedef struct seh_context
int elems_count;
int elems_max;
seh_prologue_element *elems;
+
+ /* Scope count for x64 .xdata */
+ unsigned int scopes;
} seh_context;
typedef enum seh_kind {
@@ -151,6 +156,7 @@ static void obj_coff_seh_proc (int);
static void obj_coff_seh_handler (int);
static void obj_coff_seh_handlerdata (int);
static void obj_coff_seh_code (int);
+static void obj_coff_seh_scope (int);
#define UNDSEC bfd_und_section_ptr
--
2.35.1.windows.2
next reply other threads:[~2023-07-03 3:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-03 3:22 Julian Waters [this message]
-- strict thread matches above, loose matches on Subject: below --
2023-07-03 6:12 Julian Waters
2023-07-02 10:18 Julian Waters
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=CAP2b4GMVuEsPJdGpW1nY8BSZ-DL4F37rL7J89Ox5gWY7Jehong@mail.gmail.com \
--to=tanksherman27@gmail.com \
--cc=binutils@sourceware.org \
/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).