From 97fb80aee5829f40905cf9cf137fa497b9885bbe Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 30 Jan 2026 20:05:45 +0000
Subject: [PATCH 1/4] Initial plan


From 3c646f2e2746aa5c194ce077662548a8f694dc53 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 30 Jan 2026 20:10:54 +0000
Subject: [PATCH 2/4] Fix arm32 dump/disasm to handle null jdsc for async
 resume info

Co-authored-by: jakobbotsch <7887810+jakobbotsch@users.noreply.github.com>
---
 src/coreclr/jit/emitarm.cpp | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/src/coreclr/jit/emitarm.cpp b/src/coreclr/jit/emitarm.cpp
index e40e11d3b41b6b..a9c5e4c678e42d 100644
--- a/src/coreclr/jit/emitarm.cpp
+++ b/src/coreclr/jit/emitarm.cpp
@@ -7305,8 +7305,6 @@ void emitter::emitDispInsHelp(
                     offs += size;
                 }
 
-                assert(jdsc != NULL);
-
                 if (id->idIsDspReloc())
                 {
                     printf("reloc ");
@@ -7314,8 +7312,8 @@ void emitter::emitDispInsHelp(
                 printf("%s ADDRESS J_M%03u_DS%02u", (id->idIns() == INS_movw) ? "LOW" : "HIGH", emitComp->compMethodID,
                        imm);
 
-                // After the MOVT, dump the table
-                if (id->idIns() == INS_movt)
+                // After the MOVT, dump the table if jdsc is not null (i.e., this is a block address table)
+                if (jdsc != NULL && id->idIns() == INS_movt)
                 {
                     unsigned     cnt = jdsc->dsSize / TARGET_POINTER_SIZE;
                     BasicBlock** bbp = (BasicBlock**)jdsc->dsCont;

From 387431229ae360b3800587ed1d5e8eb1ec5e5384 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 30 Jan 2026 20:12:11 +0000
Subject: [PATCH 3/4] Improve comment to clarify when jdsc is null

Co-authored-by: jakobbotsch <7887810+jakobbotsch@users.noreply.github.com>
---
 src/coreclr/jit/emitarm.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/coreclr/jit/emitarm.cpp b/src/coreclr/jit/emitarm.cpp
index a9c5e4c678e42d..78b5ec0d80dc67 100644
--- a/src/coreclr/jit/emitarm.cpp
+++ b/src/coreclr/jit/emitarm.cpp
@@ -7312,7 +7312,8 @@ void emitter::emitDispInsHelp(
                 printf("%s ADDRESS J_M%03u_DS%02u", (id->idIns() == INS_movw) ? "LOW" : "HIGH", emitComp->compMethodID,
                        imm);
 
-                // After the MOVT, dump the table if jdsc is not null (i.e., this is a block address table)
+                // After the MOVT, dump the table if jdsc is not null. jdsc is null for async resume info
+                // and non-null for block address tables.
                 if (jdsc != NULL && id->idIns() == INS_movt)
                 {
                     unsigned     cnt = jdsc->dsSize / TARGET_POINTER_SIZE;

From b307df752ca27534f7dbeb0ffaa61a362d225e70 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Fri, 30 Jan 2026 20:19:46 +0000
Subject: [PATCH 4/4] Use nullptr instead of NULL and print RWD format for
 non-block-address-table data

Co-authored-by: jakobbotsch <7887810+jakobbotsch@users.noreply.github.com>
---
 src/coreclr/jit/emitarm.cpp | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/src/coreclr/jit/emitarm.cpp b/src/coreclr/jit/emitarm.cpp
index 78b5ec0d80dc67..92a3093b7c2b27 100644
--- a/src/coreclr/jit/emitarm.cpp
+++ b/src/coreclr/jit/emitarm.cpp
@@ -7285,7 +7285,7 @@ void emitter::emitDispInsHelp(
             emitDispReg(id->idReg1(), attr, true);
             imm = emitGetInsSC(id);
             {
-                dataSection*  jdsc = 0;
+                dataSection*  jdsc = nullptr;
                 NATIVE_OFFSET offs = 0;
 
                 /* Find the appropriate entry in the data section list */
@@ -7309,17 +7309,25 @@ void emitter::emitDispInsHelp(
                 {
                     printf("reloc ");
                 }
-                printf("%s ADDRESS J_M%03u_DS%02u", (id->idIns() == INS_movw) ? "LOW" : "HIGH", emitComp->compMethodID,
-                       imm);
+
+                if (jdsc != nullptr)
+                {
+                    printf("%s ADDRESS J_M%03u_DS%02u", (id->idIns() == INS_movw) ? "LOW" : "HIGH",
+                           emitComp->compMethodID, imm);
+                }
+                else
+                {
+                    printf("%s ADDRESS RWD%02zu", (id->idIns() == INS_movw) ? "LOW" : "HIGH", (size_t)imm);
+                }
 
                 // After the MOVT, dump the table if jdsc is not null. jdsc is null for async resume info
                 // and non-null for block address tables.
-                if (jdsc != NULL && id->idIns() == INS_movt)
+                if (jdsc != nullptr && id->idIns() == INS_movt)
                 {
                     unsigned     cnt = jdsc->dsSize / TARGET_POINTER_SIZE;
                     BasicBlock** bbp = (BasicBlock**)jdsc->dsCont;
 
-                    bool isBound = (emitCodeGetCookie(*bbp) != NULL);
+                    bool isBound = (emitCodeGetCookie(*bbp) != nullptr);
 
                     if (isBound)
                     {