[v2,15/15] linux-user/sparc: Handle tag overflow traps

Message ID	20230216054516.1267305-16-richard.henderson@linaro.org
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Series	linux-user/sparc: Handle missing traps \| expand [v2,00/15] linux-user/sparc: Handle missing traps [v2,01/15] linux-user/sparc: Raise SIGILL for all unhandled software traps [v2,02/15] linux-user/sparc: Tidy syscall trap [v2,03/15] linux-user/sparc: Tidy syscall error return [v2,04/15] linux-user/sparc: Use TT_TRAP for flush windows [v2,05/15] linux-user/sparc: Tidy window spill/fill traps [v2,06/15] linux-user/sparc: Fix sparc64_{get, set}_context traps [v2,07/15] linux-user/sparc: Handle software breakpoint trap [v2,08/15] linux-user/sparc: Handle division by zero traps [v2,09/15] linux-user/sparc: Handle getcc, setcc, getpsr traps [v2,10/15] linux-user/sparc: Handle priviledged opcode trap [v2,11/15] linux-user/sparc: Handle privilidged action trap [v2,12/15] linux-user/sparc: Handle coprocessor disabled trap [v2,13/15] linux-user/sparc: Handle unimplemented flush trap [v2,14/15] linux-user/sparc: Handle floating-point exceptions [v2,15/15] linux-user/sparc: Handle tag overflow traps

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20230216054516.1267305-16-richard.henderson@linaro.org

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Subject: [PATCH v2 15/15] linux-user/sparc: Handle tag overflow traps
Date: Wed, 15 Feb 2023 19:45:16 -1000
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Series

linux-user/sparc: Handle missing traps | expand

Commit Message

Richard Henderson Feb. 16, 2023, 5:45 a.m. UTC

This trap is raised by taddcctv and tsubcctv insns.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/sparc/target_signal.h | 2 +-
 linux-user/syscall_defs.h        | 5 +++++
 linux-user/sparc/cpu_loop.c      | 3 +++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/linux-user/sparc/target_signal.h b/linux-user/sparc/target_signal.h
index 87757f0c4e..f223eb4af6 100644
--- a/linux-user/sparc/target_signal.h
+++ b/linux-user/sparc/target_signal.h
@@ -8,7 +8,7 @@ 
 #define TARGET_SIGTRAP           5
 #define TARGET_SIGABRT           6
 #define TARGET_SIGIOT            6
-#define TARGET_SIGSTKFLT         7 /* actually EMT */
+#define TARGET_SIGEMT            7
 #define TARGET_SIGFPE            8
 #define TARGET_SIGKILL           9
 #define TARGET_SIGBUS           10
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 77864de57f..614a1cbc8e 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -717,6 +717,11 @@  typedef struct target_siginfo {
 #define TARGET_TRAP_HWBKPT      (4)     /* hardware breakpoint/watchpoint */
 #define TARGET_TRAP_UNK         (5)     /* undiagnosed trap */
 
+/*
+ * SIGEMT si_codes
+ */
+#define TARGET_EMT_TAGOVF      1       /* tag overflow */
+
 #include "target_resource.h"
 
 struct target_pollfd {
diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index 5a8a71e976..b36bb2574b 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -328,6 +328,9 @@  void cpu_loop (CPUSPARCState *env)
         case TT_PRIV_INSN:
             force_sig_fault(TARGET_SIGILL, TARGET_ILL_PRVOPC, env->pc);
             break;
+        case TT_TOVF:
+            force_sig_fault(TARGET_SIGEMT, TARGET_EMT_TAGOVF, env->pc);
+            break;
 #ifdef TARGET_SPARC64
         case TT_PRIV_ACT:
             /* Note do_privact defers to do_privop. */

[v2,15/15] linux-user/sparc: Handle tag overflow traps

Commit Message

Patch