spim mips simulator Activity
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jameslarus
Activity for spim mips simulator
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W. Michael Petullo created ticket #114
Memory bug in spim: CVE-2025-29364
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James Larus posted a comment on ticket #16
It is an open source project. Feel free to fix it. spim maintenance is over after 25 years.
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Anonymous posted a comment on ticket #16
From 10 years ago? and nothing has been done.
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Anonymous posted a comment on ticket #111
Thanks for the quick fix.
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Anonymous posted a comment on ticket #16
use control h
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Anonymous posted a comment on ticket #104
This issue still exists I came across it as well and had to add the break statement manually.
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Silviu Stefan posted a comment on ticket #104
Hello, unfortunately I still encounter this bug. I have this trivial program that prints $a0, which is supposed to be argc: .data .text main: li $v0, 1 syscall # print $a0 li $v0, 10 syscall If this code is in /tmp/test.s, and I run spim -file /tmp/test.s arg1 arg2 arg3, it should print "4", but it prints "1". In fact, no matter how many arguments you add, it always prints "1", and if you look into $a1 (argv), it's always an array with 1 element, a pointer to the last argument passed. I see revision...
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Anonymous created ticket #113
In mac console user input does not display
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Anonymous created ticket #112
Creating files with syscall 13 is accidentally platform specific
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spim mips simulator released /QtSpim_9.1.24_mac.mpkg.zip
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Mac packaging cleanups
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Changelog
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Fixing documentation.
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Fix website
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Cleanup for release.
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Cannot build `spim`
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Fixed. Didn't realize that clang-format sorted includes alphabetically and broke Makefiles....
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Formatting with clang-format
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Reformat code to modern standards (google) but do not sort include files.
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Backout changes 755 and 756 because reformating broke make
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Misc changes
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Anonymous created ticket #111
Cannot build `spim`
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Reformat with clang-format to bring to modern standard
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Sorry about this problem. The text fields use the webengine for rendering so I need to find out accessibility is not enabled for that component. Next release.
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Anonymous created ticket #110
Accessibility problem
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You need to load a program into spim that has a function (its entry point) called "main" (as in C, Python, ....).
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Anonymous created ticket #109
help me
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QtSpim Freezes after loading a .f file on MacBook Air
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No. That type of problem is difficult to diagnose. I'd try running the file on another machine. If that one hangs, send me the file. Otherwise, uninstall and reinstall spim.
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Anonymous created ticket #108
QtSpim Freezes after loading a .f file on MacBook Air
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Fix null dereference with partial load on non-instruction
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Thanks! It is fixed in the next release.
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Null memory reference when writing to memory location without instruction.
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easy_as_pi314 created ticket #7
Fix null dereference with partial load on non-instruction
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Yes, when I release the next version -- probably a while since the changes so far are pretty minor (e.g. version numbers) and it is a lot of work rebuilding the releases .
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Anonymous posted a comment on ticket #106
Thanks! Will you be updating the MSI that's out there with this updated change or will you be waiting for more changes to include it with?
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Anonymous posted a comment on ticket #107
Dear James Larus, thank you for the feedback. Best, Pablo.
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PC-relative addressing mode
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spim does not simulate the branching behavior of actual MIPS processors (with a delayed branch) because it was far too difficult for student to write assembly code by hand that way. However, if you use the -bare flag, you'll get a simulation of the actual processor, delayed branches and all. You can also use the -delayed-branch flag if that is all you want.
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Anonymous created ticket #107
PC-relative addressing mode
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Version incorrect on Windows MSI
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Yup, sorry about that. Version numbers are scattered in far too many places....
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Update version number
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Anonymous created ticket #106
Version incorrect on Windows MSI
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Simulator Continues After Close
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Looks like a bug in Qt. quitOnLastWindowClosed (https://doc.qt.io/qt-5/qguiapplication.html#quitOnLastWindowClosed-prop) indicates that the application should quit when the last (ie main) window is closed.
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Anonymous created ticket #105
Simulator Continues After Close
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Anonymous posted a comment on ticket #104
$ spim -f program.s arg1 Cannot open file (NULL) More details in https://stackoverflow.com/questions/72116237/how-do-you-enter-command-line-arguments-in-spim Thanks for taking the time
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SPIM (CLI) command line args bug
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Thanks, I've fixed this bug for the next release.
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spim did not properly parse command line arguments
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Can you provide an example how you caused this error? I can't see where a break would fix anything.
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Anonymous created ticket #104
SPIM (CLI) command line args bug
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QtSpim on Linux uses user locale to parse sources, breaking floating point constants parsing
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Yes, that's silly that they documented it and didn't fix it.
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Fix LOCALE on Linux
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MItaly created ticket #103
QtSpim on Linux uses user locale to parse sources, breaking floating point constants parsing
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Help message for `-assemble` is incorrect
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Yes, this was a mistake. Thanks for reporting it.
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Error message for -assemble option was wrong.
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Anonymous created ticket #102
Help message for `-assemble` is incorrect
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Release 9.1.23
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Changes to compile on Linux (bit rot)
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Delete unnecessary files
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Changes to build and install on Windows (bit rot)
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Changes for 9.1.23 on MacOS
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Anonymous posted a comment on ticket #87
OK, I finally figured out how to display the version in the Finder (spacebar) there are 3 ways: • use the Get Info (Command-I) • use Column View • use QuickLook (Spacebar) depending on the method the display can be slightly different so its best of both CFBundleVersion and CFShortVersionString are correct to ensure a consistent output.
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QtSpim 0.9.20 claims to be version 0.9.18 in macOS Finder
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OK, I finally figured out how to display the version in the Finder (spacebar), and yes it is wrong. I'll fix it. Sorry about that; too much of MacOS is undocumented.
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SYSCALL 12 is read_char, which reads one character from the input stream. ALL of the characters on the input are returned. Some programs need to see end-of-line characters such as \n. If you are not interested in white space characters, filter them out.
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SYSCALL 12 read_char doesn't handle newline from line-buffered stdin correctly
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Eliminate compiler warnings.
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cli spim --quiet option
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Fixed in spim (not QtSpim which has lots of other spew).
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Surpress load file message with -quiet
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Anonymous posted a comment on ticket #100
I will provide sample code to reproduce once I am not on a phone.
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