From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: laurent@vivier.eu
Subject: [PATCH v2 09/15] linux-user/sparc: Handle getcc, setcc, getpsr traps
Date: Wed, 15 Feb 2023 19:45:10 -1000 [thread overview]
Message-ID: <20230216054516.1267305-10-richard.henderson@linaro.org> (raw)
In-Reply-To: <20230216054516.1267305-1-richard.henderson@linaro.org>
These are really only meaningful for sparc32, but they're
still present for backward compatibility for sparc64.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
linux-user/sparc/cpu_loop.c | 62 +++++++++++++++++++++++++++++++++++--
1 file changed, 59 insertions(+), 3 deletions(-)
diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index e04c842867..a3edb353f6 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -149,6 +149,51 @@ static void flush_windows(CPUSPARCState *env)
#endif
}
+static void next_instruction(CPUSPARCState *env)
+{
+ env->pc = env->npc;
+ env->npc = env->npc + 4;
+}
+
+static uint32_t do_getcc(CPUSPARCState *env)
+{
+#ifdef TARGET_SPARC64
+ return cpu_get_ccr(env) & 0xf;
+#else
+ return extract32(cpu_get_psr(env), 20, 4);
+#endif
+}
+
+static void do_setcc(CPUSPARCState *env, uint32_t icc)
+{
+#ifdef TARGET_SPARC64
+ cpu_put_ccr(env, (cpu_get_ccr(env) & 0xf0) | (icc & 0xf));
+#else
+ cpu_put_psr(env, deposit32(cpu_get_psr(env), 20, 4, icc));
+#endif
+}
+
+static uint32_t do_getpsr(CPUSPARCState *env)
+{
+#ifdef TARGET_SPARC64
+ const uint64_t TSTATE_CWP = 0x1f;
+ const uint64_t TSTATE_ICC = 0xfull << 32;
+ const uint64_t TSTATE_XCC = 0xfull << 36;
+ const uint32_t PSR_S = 0x00000080u;
+ const uint32_t PSR_V8PLUS = 0xff000000u;
+ uint64_t tstate = sparc64_tstate(env);
+
+ /* See <asm/psrcompat.h>, tstate_to_psr. */
+ return ((tstate & TSTATE_CWP) |
+ PSR_S |
+ ((tstate & TSTATE_ICC) >> 12) |
+ ((tstate & TSTATE_XCC) >> 20) |
+ PSR_V8PLUS);
+#else
+ return (cpu_get_psr(env) & (PSR_ICC | PSR_CWP)) | PSR_S;
+#endif
+}
+
/* Avoid ifdefs below for the abi32 and abi64 paths. */
#ifdef TARGET_ABI32
#define TARGET_TT_SYSCALL (TT_TRAP + 0x10) /* t_linux */
@@ -218,9 +263,20 @@ void cpu_loop (CPUSPARCState *env)
case TT_TRAP + 0x03: /* flush windows */
flush_windows(env);
- /* next instruction */
- env->pc = env->npc;
- env->npc = env->npc + 4;
+ next_instruction(env);
+ break;
+
+ case TT_TRAP + 0x20: /* getcc */
+ env->gregs[1] = do_getcc(env);
+ next_instruction(env);
+ break;
+ case TT_TRAP + 0x21: /* setcc */
+ do_setcc(env, env->gregs[1]);
+ next_instruction(env);
+ break;
+ case TT_TRAP + 0x22: /* getpsr */
+ env->gregs[1] = do_getpsr(env);
+ next_instruction(env);
break;
#ifdef TARGET_SPARC64
--
2.34.1
next prev parent reply other threads:[~2023-02-16 5:49 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-16 5:45 [PATCH v2 00/15] linux-user/sparc: Handle missing traps Richard Henderson
2023-02-16 5:45 ` [PATCH v2 01/15] linux-user/sparc: Raise SIGILL for all unhandled software traps Richard Henderson
2023-02-16 6:07 ` Richard Henderson
2023-02-16 5:45 ` [PATCH v2 02/15] linux-user/sparc: Tidy syscall trap Richard Henderson
2023-02-16 7:51 ` Philippe Mathieu-Daudé
2023-02-16 5:45 ` [PATCH v2 03/15] linux-user/sparc: Tidy syscall error return Richard Henderson
2023-02-16 5:45 ` [PATCH v2 04/15] linux-user/sparc: Use TT_TRAP for flush windows Richard Henderson
2023-02-16 7:54 ` Philippe Mathieu-Daudé
2023-02-16 5:45 ` [PATCH v2 05/15] linux-user/sparc: Tidy window spill/fill traps Richard Henderson
2023-02-16 7:55 ` Philippe Mathieu-Daudé
2023-02-16 5:45 ` [PATCH v2 06/15] linux-user/sparc: Fix sparc64_{get, set}_context traps Richard Henderson
2023-02-16 5:45 ` [PATCH v2 07/15] linux-user/sparc: Handle software breakpoint trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 08/15] linux-user/sparc: Handle division by zero traps Richard Henderson
2023-02-16 5:45 ` Richard Henderson [this message]
2023-02-16 5:45 ` [PATCH v2 10/15] linux-user/sparc: Handle priviledged opcode trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 11/15] linux-user/sparc: Handle privilidged action trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 12/15] linux-user/sparc: Handle coprocessor disabled trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 13/15] linux-user/sparc: Handle unimplemented flush trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 14/15] linux-user/sparc: Handle floating-point exceptions Richard Henderson
2023-02-16 5:45 ` [PATCH v2 15/15] linux-user/sparc: Handle tag overflow traps Richard Henderson
2023-03-07 15:56 ` [PATCH v2 00/15] linux-user/sparc: Handle missing traps Laurent Vivier
2023-03-07 17:07 ` Richard Henderson
2023-03-07 18:23 ` Laurent Vivier
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