[Lldb-commits] [lldb] [Mips] Fix signal number of SIGBUS on mips (PR #132688)

[via lldb-commits]

https://github.com/yingopq created https://github.com/llvm/llvm-project/pull/132688

MIPS changed the SIGBUS signal number to be the same as other architectures. So we would fail to compile llvm on mips. The relevant modification link is:
https://reviews.llvm.org/D146285

>From e8cf384fa9e2b903c7d724d15fae8afffba2e133 Mon Sep 17 00:00:00 2001
From: Ying Huang <ying.huang at oss.cipunited.com>
Date: Mon, 24 Mar 2025 03:44:41 -0400
Subject: [PATCH] [Mips] Fix signal number of SIGBUS on mips

MIPS changed the SIGBUS signal number to be the same as other
architectures. So we would fail to compile llvm on mips.
The relevant modification link is:
https://reviews.llvm.org/D146285
---
 .../Plugins/Process/Utility/LinuxSignals.cpp  | 21 ++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/lldb/source/Plugins/Process/Utility/LinuxSignals.cpp b/lldb/source/Plugins/Process/Utility/LinuxSignals.cpp
index eaecc84df15d4..aaada3b1e4c8f 100644
--- a/lldb/source/Plugins/Process/Utility/LinuxSignals.cpp
+++ b/lldb/source/Plugins/Process/Utility/LinuxSignals.cpp
@@ -61,10 +61,17 @@ void LinuxSignals::Reset() {
   AddSignal(5,      "SIGTRAP",      true,     true,   true,   "trace trap (not reset when caught)");
   AddSignal(6,      "SIGABRT",      false,    true,   true,   "abort()/IOT trap", "SIGIOT");
 
-  AddSignal(7,      "SIGBUS",       false,    true,   true,   "bus error");
-  ADD_SIGCODE(SIGBUS, 7, BUS_ADRALN, 1, "illegal alignment");
-  ADD_SIGCODE(SIGBUS, 7, BUS_ADRERR, 2, "illegal address");
-  ADD_SIGCODE(SIGBUS, 7, BUS_OBJERR, 3, "hardware error");
+#if defined(mips) || defined(__mips__) || defined(__mips)
+    AddSignal(10,      "SIGBUS",       false,    true,   true,   "bus error");
+    ADD_SIGCODE(SIGBUS, 10, BUS_ADRALN, 1, "illegal alignment");
+    ADD_SIGCODE(SIGBUS, 10, BUS_ADRERR, 2, "illegal address");
+    ADD_SIGCODE(SIGBUS, 10, BUS_OBJERR, 3, "hardware error");
+#else
+    AddSignal(7,      "SIGBUS",       false,    true,   true,   "bus error");
+    ADD_SIGCODE(SIGBUS, 7, BUS_ADRALN, 1, "illegal alignment");
+    ADD_SIGCODE(SIGBUS, 7, BUS_ADRERR, 2, "illegal address");
+    ADD_SIGCODE(SIGBUS, 7, BUS_OBJERR, 3, "hardware error");
+#endif
 
   AddSignal(8,      "SIGFPE",       false,    true,   true,   "floating point exception");
   ADD_SIGCODE(SIGFPE, 8, FPE_INTDIV, 1, "integer divide by zero");
@@ -77,7 +84,11 @@ void LinuxSignals::Reset() {
   ADD_SIGCODE(SIGFPE, 8, FPE_FLTSUB, 8, "subscript out of range");
 
   AddSignal(9,      "SIGKILL",      false,    true,   true,   "kill");
-  AddSignal(10,     "SIGUSR1",      false,    true,   true,   "user defined signal 1");
+#if defined(mips) || defined(__mips__) || defined(__mips)
+    AddSignal(7,     "SIGUSR1",      false,    true,   true,   "user defined signal 1");
+#else
+    AddSignal(10,     "SIGUSR1",      false,    true,   true,   "user defined signal 1");
+#endif
 
   AddSignal(11,     "SIGSEGV",      false,    true,   true,   "segmentation violation");
   ADD_SIGCODE(SIGSEGV, 11, SEGV_MAPERR,  1, "address not mapped to object", SignalCodePrintOption::Address);