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From: Laurent Vivier <laurent@vivier.eu>
To: qemu-devel@nongnu.org
Cc: "Mark Cave-Ayland" <mark.cave-ayland@ilande.co.uk>,
	"Riku Voipio" <riku.voipio@iki.fi>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Laurent Vivier" <laurent@vivier.eu>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Artyom Tarasenko" <atar4qemu@gmail.com>
Subject: [PULL 06/13] linux-user/sparc: Begin using WREG constants in sparc/signal.c
Date: Tue,  5 Nov 2019 19:11:12 +0100	[thread overview]
Message-ID: <20191105181119.26779-7-laurent@vivier.eu> (raw)
In-Reply-To: <20191105181119.26779-1-laurent@vivier.eu>

From: Richard Henderson <richard.henderson@linaro.org>

This is non-obvious because the UREG constants are in fact wrong.

s/UREG_I/WREG_O/g
s/UREG_O/WREG_I/g
s/UREG_L/WREG_L/g

These substitutions have identical integer values.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191025113921.9412-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 linux-user/sparc/signal.c | 95 ++++++++++++++-------------------------
 1 file changed, 33 insertions(+), 62 deletions(-)

diff --git a/linux-user/sparc/signal.c b/linux-user/sparc/signal.c
index ead169fbaa26..a967e2db7307 100644
--- a/linux-user/sparc/signal.c
+++ b/linux-user/sparc/signal.c
@@ -104,19 +104,8 @@ struct target_rt_signal_frame {
     qemu_siginfo_fpu_t  fpu_state;
 };
 
-#define UREG_O0        16
-#define UREG_O6        22
-#define UREG_I0        0
-#define UREG_I1        1
-#define UREG_I2        2
-#define UREG_I3        3
-#define UREG_I4        4
-#define UREG_I5        5
-#define UREG_I6        6
-#define UREG_I7        7
-#define UREG_L0        8
-#define UREG_FP        UREG_I6
-#define UREG_SP        UREG_O6
+#define UREG_FP        WREG_O6
+#define UREG_SP        WREG_I6
 
 static inline abi_ulong get_sigframe(struct target_sigaction *sa, 
                                      CPUSPARCState *env,
@@ -159,30 +148,12 @@ setup___siginfo(__siginfo_t *si, CPUSPARCState *env, abi_ulong mask)
         __put_user(env->gregs[i], &si->si_regs.u_regs[i]);
     }
     for (i=0; i < 8; i++) {
-        __put_user(env->regwptr[UREG_I0 + i], &si->si_regs.u_regs[i+8]);
+        __put_user(env->regwptr[WREG_O0 + i], &si->si_regs.u_regs[i+8]);
     }
     __put_user(mask, &si->si_mask);
     return err;
 }
 
-#if 0
-static int
-setup_sigcontext(struct target_sigcontext *sc, /*struct _fpstate *fpstate,*/
-                 CPUSPARCState *env, unsigned long mask)
-{
-    int err = 0;
-
-    __put_user(mask, &sc->sigc_mask);
-    __put_user(env->regwptr[UREG_SP], &sc->sigc_sp);
-    __put_user(env->pc, &sc->sigc_pc);
-    __put_user(env->npc, &sc->sigc_npc);
-    __put_user(env->psr, &sc->sigc_psr);
-    __put_user(env->gregs[1], &sc->sigc_g1);
-    __put_user(env->regwptr[UREG_O0], &sc->sigc_o0);
-
-    return err;
-}
-#endif
 #define NF_ALIGNEDSZ  (((sizeof(struct target_signal_frame) + 7) & (~7)))
 
 void setup_frame(int sig, struct target_sigaction *ka,
@@ -221,20 +192,20 @@ void setup_frame(int sig, struct target_sigaction *ka,
     }
 
     for (i = 0; i < 8; i++) {
-        __put_user(env->regwptr[i + UREG_L0], &sf->ss.locals[i]);
+        __put_user(env->regwptr[i + WREG_L0], &sf->ss.locals[i]);
     }
     for (i = 0; i < 8; i++) {
-        __put_user(env->regwptr[i + UREG_I0], &sf->ss.ins[i]);
+        __put_user(env->regwptr[i + WREG_O0], &sf->ss.ins[i]);
     }
     if (err)
         goto sigsegv;
 
     /* 3. signal handler back-trampoline and parameters */
     env->regwptr[UREG_FP] = sf_addr;
-    env->regwptr[UREG_I0] = sig;
-    env->regwptr[UREG_I1] = sf_addr +
+    env->regwptr[WREG_O0] = sig;
+    env->regwptr[WREG_O1] = sf_addr +
             offsetof(struct target_signal_frame, info);
-    env->regwptr[UREG_I2] = sf_addr +
+    env->regwptr[WREG_O2] = sf_addr +
             offsetof(struct target_signal_frame, info);
 
     /* 4. signal handler */
@@ -242,11 +213,11 @@ void setup_frame(int sig, struct target_sigaction *ka,
     env->npc = (env->pc + 4);
     /* 5. return to kernel instructions */
     if (ka->ka_restorer) {
-        env->regwptr[UREG_I7] = ka->ka_restorer;
+        env->regwptr[WREG_O7] = ka->ka_restorer;
     } else {
         uint32_t val32;
 
-        env->regwptr[UREG_I7] = sf_addr +
+        env->regwptr[WREG_O7] = sf_addr +
                 offsetof(struct target_signal_frame, insns) - 2 * 4;
 
         /* mov __NR_sigreturn, %g1 */
@@ -316,7 +287,7 @@ long do_sigreturn(CPUSPARCState *env)
         __get_user(env->gregs[i], &sf->info.si_regs.u_regs[i]);
     }
     for (i=0; i < 8; i++) {
-        __get_user(env->regwptr[i + UREG_I0], &sf->info.si_regs.u_regs[i+8]);
+        __get_user(env->regwptr[i + WREG_O0], &sf->info.si_regs.u_regs[i+8]);
     }
 
     /* FIXME: implement FPU save/restore:
@@ -433,7 +404,7 @@ void sparc64_set_context(CPUSPARCState *env)
     abi_ulong fp, i7, w_addr;
     unsigned int i;
 
-    ucp_addr = env->regwptr[UREG_I0];
+    ucp_addr = env->regwptr[WREG_O0];
     if (!lock_user_struct(VERIFY_READ, ucp, ucp_addr, 1)) {
         goto do_sigsegv;
     }
@@ -443,7 +414,7 @@ void sparc64_set_context(CPUSPARCState *env)
     if ((pc | npc) & 3) {
         goto do_sigsegv;
     }
-    if (env->regwptr[UREG_I1]) {
+    if (env->regwptr[WREG_O1]) {
         target_sigset_t target_set;
         sigset_t set;
 
@@ -474,19 +445,19 @@ void sparc64_set_context(CPUSPARCState *env)
     __get_user(env->gregs[5], (&(*grp)[SPARC_MC_G5]));
     __get_user(env->gregs[6], (&(*grp)[SPARC_MC_G6]));
     __get_user(env->gregs[7], (&(*grp)[SPARC_MC_G7]));
-    __get_user(env->regwptr[UREG_I0], (&(*grp)[SPARC_MC_O0]));
-    __get_user(env->regwptr[UREG_I1], (&(*grp)[SPARC_MC_O1]));
-    __get_user(env->regwptr[UREG_I2], (&(*grp)[SPARC_MC_O2]));
-    __get_user(env->regwptr[UREG_I3], (&(*grp)[SPARC_MC_O3]));
-    __get_user(env->regwptr[UREG_I4], (&(*grp)[SPARC_MC_O4]));
-    __get_user(env->regwptr[UREG_I5], (&(*grp)[SPARC_MC_O5]));
-    __get_user(env->regwptr[UREG_I6], (&(*grp)[SPARC_MC_O6]));
-    __get_user(env->regwptr[UREG_I7], (&(*grp)[SPARC_MC_O7]));
+    __get_user(env->regwptr[WREG_O0], (&(*grp)[SPARC_MC_O0]));
+    __get_user(env->regwptr[WREG_O1], (&(*grp)[SPARC_MC_O1]));
+    __get_user(env->regwptr[WREG_O2], (&(*grp)[SPARC_MC_O2]));
+    __get_user(env->regwptr[WREG_O3], (&(*grp)[SPARC_MC_O3]));
+    __get_user(env->regwptr[WREG_O4], (&(*grp)[SPARC_MC_O4]));
+    __get_user(env->regwptr[WREG_O5], (&(*grp)[SPARC_MC_O5]));
+    __get_user(env->regwptr[WREG_O6], (&(*grp)[SPARC_MC_O6]));
+    __get_user(env->regwptr[WREG_O7], (&(*grp)[SPARC_MC_O7]));
 
     __get_user(fp, &(ucp->tuc_mcontext.mc_fp));
     __get_user(i7, &(ucp->tuc_mcontext.mc_i7));
 
-    w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
+    w_addr = TARGET_STACK_BIAS+env->regwptr[WREG_O6];
     if (put_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
                  abi_ulong) != 0) {
         goto do_sigsegv;
@@ -534,7 +505,7 @@ void sparc64_get_context(CPUSPARCState *env)
     target_sigset_t target_set;
     sigset_t set;
 
-    ucp_addr = env->regwptr[UREG_I0];
+    ucp_addr = env->regwptr[WREG_O0];
     if (!lock_user_struct(VERIFY_WRITE, ucp, ucp_addr, 0)) {
         goto do_sigsegv;
     }
@@ -580,16 +551,16 @@ void sparc64_get_context(CPUSPARCState *env)
     __put_user(env->gregs[5], &((*grp)[SPARC_MC_G5]));
     __put_user(env->gregs[6], &((*grp)[SPARC_MC_G6]));
     __put_user(env->gregs[7], &((*grp)[SPARC_MC_G7]));
-    __put_user(env->regwptr[UREG_I0], &((*grp)[SPARC_MC_O0]));
-    __put_user(env->regwptr[UREG_I1], &((*grp)[SPARC_MC_O1]));
-    __put_user(env->regwptr[UREG_I2], &((*grp)[SPARC_MC_O2]));
-    __put_user(env->regwptr[UREG_I3], &((*grp)[SPARC_MC_O3]));
-    __put_user(env->regwptr[UREG_I4], &((*grp)[SPARC_MC_O4]));
-    __put_user(env->regwptr[UREG_I5], &((*grp)[SPARC_MC_O5]));
-    __put_user(env->regwptr[UREG_I6], &((*grp)[SPARC_MC_O6]));
-    __put_user(env->regwptr[UREG_I7], &((*grp)[SPARC_MC_O7]));
-
-    w_addr = TARGET_STACK_BIAS+env->regwptr[UREG_I6];
+    __put_user(env->regwptr[WREG_O0], &((*grp)[SPARC_MC_O0]));
+    __put_user(env->regwptr[WREG_O1], &((*grp)[SPARC_MC_O1]));
+    __put_user(env->regwptr[WREG_O2], &((*grp)[SPARC_MC_O2]));
+    __put_user(env->regwptr[WREG_O3], &((*grp)[SPARC_MC_O3]));
+    __put_user(env->regwptr[WREG_O4], &((*grp)[SPARC_MC_O4]));
+    __put_user(env->regwptr[WREG_O5], &((*grp)[SPARC_MC_O5]));
+    __put_user(env->regwptr[WREG_O6], &((*grp)[SPARC_MC_O6]));
+    __put_user(env->regwptr[WREG_O7], &((*grp)[SPARC_MC_O7]));
+
+    w_addr = TARGET_STACK_BIAS+env->regwptr[WREG_O6];
     fp = i7 = 0;
     if (get_user(fp, w_addr + offsetof(struct target_reg_window, ins[6]),
                  abi_ulong) != 0) {
-- 
2.21.0



  parent reply	other threads:[~2019-11-05 18:15 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-05 18:11 [PULL 00/13] Linux user for 4.2 patches Laurent Vivier
2019-11-05 18:11 ` [PULL 01/13] linux-user: Support for NETLINK socket options Laurent Vivier
2019-11-05 18:11 ` [PULL 02/13] scripts/qemu-binfmt-conf: Update for sparc64 Laurent Vivier
2019-11-05 18:11 ` [PULL 03/13] tests/tcg/multiarch/linux-test: Fix error check for shmat Laurent Vivier
2019-11-05 18:11 ` [PULL 04/13] target/sparc: Define an enumeration for accessing env->regwptr Laurent Vivier
2019-11-05 18:11 ` [PULL 05/13] linux-user/sparc: Use WREG constants in sparc/target_cpu.h Laurent Vivier
2019-11-05 18:11 ` Laurent Vivier [this message]
2019-11-05 18:11 ` [PULL 07/13] linux-user/sparc: Use WREG_SP constant in sparc/signal.c Laurent Vivier
2019-11-05 18:11 ` [PULL 08/13] linux-user/sparc: Fix WREG usage in setup_frame Laurent Vivier
2019-11-05 18:11 ` [PULL 09/13] linux-user/sparc64: Fix target_signal_frame Laurent Vivier
2019-11-05 18:11 ` [PULL 10/13] linux-user: Rename cpu_clone_regs to cpu_clone_regs_child Laurent Vivier
2019-11-05 18:11 ` [PULL 11/13] linux-user: Introduce cpu_clone_regs_parent Laurent Vivier
2019-11-05 18:11 ` [PULL 12/13] linux-user/sparc: Fix cpu_clone_regs_* Laurent Vivier
2019-11-05 18:11 ` [PULL 13/13] linux-user/alpha: Set r20 secondary return value Laurent Vivier
2019-11-05 22:06 ` [PULL 00/13] Linux user for 4.2 patches no-reply
2019-11-05 22:14   ` Laurent Vivier
2019-11-05 22:56     ` Philippe Mathieu-Daudé

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