GNU bug report logs - #49934
Hw-Probe

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#49934: closed (Hw-Probe)
Date: Thu, 23 Jun 2022 15:36:02 +0000

[Message part 1 (text/plain, inline)]

Your message dated Thu, 23 Jun 2022 11:35:04 -0400
with message-id <878rpn4clz.fsf_-_ <at> gmail.com>
and subject line Re: bug#50283: HwInfo
has caused the debbugs.gnu.org bug report #49934,
regarding Hw-Probe
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
49934: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=49934
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: phodina <phodina <at> protonmail.com>
To: "guix-patches <at> gnu.org" <guix-patches <at> gnu.org>
Subject: [PATCH 1/3] gnu: Add libx86emu
Date: Sat, 07 Aug 2021 21:58:55 +0000

* gnu/packages/hardware.scm: (libx86emu): New variable.

diff --git a/gnu/packages/hardware.scm b/gnu/packages/hardware.scm
index 707a47fb4b..93be54cb18 100644
--- a/gnu/packages/hardware.scm
+++ b/gnu/packages/hardware.scm
@@ -4,6 +4,7 @@
 ;;; Copyright © 2020 Brice Waegeneire <brice <at> waegenei.re>
 ;;; Copyright © 2021 Evgeny Pisemsky <evgeny <at> pisemsky.com>
 ;;; Copyright © 2021 Léo Le Bouter <lle-bout <at> zaclys.net>
+;;; Copyright © 2021 Petr Hodina <phodina <at> protonmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -22,6 +23,7 @@

 (define-module (gnu packages hardware)
   #:use-module (gnu packages admin)
+  #:use-module (gnu packages assembly)
   #:use-module (gnu packages autotools)
   #:use-module (gnu packages bash)
   #:use-module (gnu packages compression)
@@ -45,6 +47,7 @@
   #:use-module (gnu packages python)
   #:use-module (gnu packages qt)
   #:use-module (gnu packages tls)
+  #:use-module (gnu packages version-control)
   #:use-module (gnu packages web)
   #:use-module (gnu packages xdisorg)
   #:use-module (gnu packages xml)
@@ -256,6 +259,54 @@ specific SMBIOS tables.")
     (license
      (list license:osl2.1 license:gpl2+ license:bsd-3 license:boost1.0))))

+(define-public libx86emu
+(package
+  (name "libx86emu")
+  (version "3.1")
+  (source (origin
+            (method git-fetch)
+            (uri (git-reference
+             (url "https://github.com/wfeldt/libx86emu")
+             (commit version)))
+            (file-name (git-file-name name version))
+            (sha256
+             (base32
+              "104xqc6nj9rpi7knl3dfqvasf087hlz2n5yndb1iycw35a6j509b"))))
+  (build-system gnu-build-system)
+  (arguments
+    `(#:make-flags (list
+                    (string-append "CC=" ,(cc-for-target))
+                    (string-append "DESTDIR=" %output)
+                    (string-append "LIBDIR=/lib"))
+      #:phases (modify-phases %standard-phases
+                (delete 'configure)
+                (add-after 'unpack 'fix-version-and-usr
+                 (lambda* (#:key inputs #:allow-other-keys)
+                  (delete-file "git2log")
+                  (let* ((file (open-file "VERSION" "a")))
+                   (display ,version file)
+                   (close-port file))
+                  (substitute* "Makefile"
+                           (("/usr") "/"))))
+                (replace 'check
+                 (lambda* _
+                  (invoke "make" "test"))))))
+  (native-inputs `(("git" ,git) ("perl" ,perl) ("nasm" ,nasm)))
+  (synopsis "Library for x86 emulation")
+  (description "Small library to emulate x86 instructions.  The focus here
+is not a complete emulation (go for qemu for this) but to cover enough for
+typical firmware blobs.
+@enumerate
+@item intercept any memory access or directly map real memory ranges
+@item intercept any i/o access, map real i/o ports, or block any real i/o
+@item intercept any interrupt
+@item provides hook to run after each instruction
+@item recognizes a special x86 instruction that can trigger logging
+@item has integrated logging
+@end enumerate")
+  (home-page "https://github.com/wfeldt/libx86emu")
+  (license license:bsd-1)))
+
 ;; Distinct from memtest86, which is obsolete.
 (define-public memtest86+
   (package
--
2.32.0

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From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Raghav Gururajan <rg <at> raghavgururajan.name>
Cc: Ricardo Wurmus <rekado <at> elephly.net>, 49934-done <at> debbugs.gnu.org,
 50283-done <at> debbugs.gnu.org
Subject: Re: bug#50283: HwInfo
Date: Thu, 23 Jun 2022 11:35:04 -0400

Hi,

Raghav Gururajan <rg <at> raghavgururajan.name> writes:

> Hi Ricardo!
>
>> --8<---------------cut here---------------start------------->8---
>> (substitute* "hw-probe.pl"
>>    (("Cmd\\(\"([^\"]+)" _ command)
>>     (string-append "Cmd(\"" (which command))))
>> --8<---------------cut here---------------end--------------->8---
>
> Thanks for the snippet and explanation.
>
> I am wondering these,
> [1] Does require import of specific modules?

No.  `which', the Scheme procedure, is part of (guix build utils).

> [2] If `(which command)`'s output is empty, will it return #f?

Yes, and I agree that's a problem.

Fortunately, the recently added search-input-file more usefully raises
an error when the file it is looking for doesn't exist, so I used that.

It was a bit painful to hunt all the commands but in the end it works
beautifully!  I pushed the result as
3611f99affc4d2edcf4141e3022dd0d2a0b04068.

Closing, thanks!

Maxim

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