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[PATCH v3 10/12] linux-user: Introduce cpu_clone_regs_parent
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From: |
Richard Henderson |
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Subject: |
[PATCH v3 10/12] linux-user: Introduce cpu_clone_regs_parent |
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Date: |
Wed, 6 Nov 2019 12:33:16 +0100 |
We will need a target-specific hook for adjusting registers
in the parent during clone. Add an empty inline function for
each target, and invoke it from the proper places.
Reviewed-by: Laurent Vivier <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Laurent Vivier <address@hidden>
---
linux-user/aarch64/target_cpu.h | 4 ++++
linux-user/alpha/target_cpu.h | 4 ++++
linux-user/arm/target_cpu.h | 4 ++++
linux-user/cris/target_cpu.h | 4 ++++
linux-user/hppa/target_cpu.h | 4 ++++
linux-user/i386/target_cpu.h | 4 ++++
linux-user/m68k/target_cpu.h | 4 ++++
linux-user/microblaze/target_cpu.h | 4 ++++
linux-user/mips/target_cpu.h | 4 ++++
linux-user/nios2/target_cpu.h | 4 ++++
linux-user/openrisc/target_cpu.h | 4 ++++
linux-user/ppc/target_cpu.h | 4 ++++
linux-user/riscv/target_cpu.h | 4 ++++
linux-user/s390x/target_cpu.h | 4 ++++
linux-user/sh4/target_cpu.h | 4 ++++
linux-user/sparc/target_cpu.h | 4 ++++
linux-user/tilegx/target_cpu.h | 4 ++++
linux-user/xtensa/target_cpu.h | 4 ++++
linux-user/syscall.c | 2 ++
19 files changed, 74 insertions(+)
diff --git a/linux-user/aarch64/target_cpu.h b/linux-user/aarch64/target_cpu.h
index cd012e0dc1..6cc02e7dcd 100644
--- a/linux-user/aarch64/target_cpu.h
+++ b/linux-user/aarch64/target_cpu.h
@@ -28,6 +28,10 @@ static inline void cpu_clone_regs_child(CPUARMState *env,
target_ulong newsp,
env->xregs[0] = 0;
}
+static inline void cpu_clone_regs_parent(CPUARMState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls)
{
/* Note that AArch64 Linux keeps the TLS pointer in TPIDR; this is
diff --git a/linux-user/alpha/target_cpu.h b/linux-user/alpha/target_cpu.h
index 37ba00cf41..dd25e18f47 100644
--- a/linux-user/alpha/target_cpu.h
+++ b/linux-user/alpha/target_cpu.h
@@ -29,6 +29,10 @@ static inline void cpu_clone_regs_child(CPUAlphaState *env,
target_ulong newsp,
env->ir[IR_A3] = 0;
}
+static inline void cpu_clone_regs_parent(CPUAlphaState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUAlphaState *env, target_ulong newtls)
{
env->unique = newtls;
diff --git a/linux-user/arm/target_cpu.h b/linux-user/arm/target_cpu.h
index 6e2ba8ad4b..2747211b24 100644
--- a/linux-user/arm/target_cpu.h
+++ b/linux-user/arm/target_cpu.h
@@ -50,6 +50,10 @@ static inline void cpu_clone_regs_child(CPUARMState *env,
target_ulong newsp,
env->regs[0] = 0;
}
+static inline void cpu_clone_regs_parent(CPUARMState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUARMState *env, target_ulong newtls)
{
if (access_secure_reg(env)) {
diff --git a/linux-user/cris/target_cpu.h b/linux-user/cris/target_cpu.h
index eacc4d8d13..74ead55c81 100644
--- a/linux-user/cris/target_cpu.h
+++ b/linux-user/cris/target_cpu.h
@@ -29,6 +29,10 @@ static inline void cpu_clone_regs_child(CPUCRISState *env,
target_ulong newsp,
env->regs[10] = 0;
}
+static inline void cpu_clone_regs_parent(CPUCRISState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUCRISState *env, target_ulong newtls)
{
env->pregs[PR_PID] = (env->pregs[PR_PID] & 0xff) | newtls;
diff --git a/linux-user/hppa/target_cpu.h b/linux-user/hppa/target_cpu.h
index f250770790..71654b3cd4 100644
--- a/linux-user/hppa/target_cpu.h
+++ b/linux-user/hppa/target_cpu.h
@@ -32,6 +32,10 @@ static inline void cpu_clone_regs_child(CPUHPPAState *env,
target_ulong newsp,
env->iaoq_b = env->gr[31] + 4;
}
+static inline void cpu_clone_regs_parent(CPUHPPAState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUHPPAState *env, target_ulong newtls)
{
env->cr[27] = newtls;
diff --git a/linux-user/i386/target_cpu.h b/linux-user/i386/target_cpu.h
index 1fadbf57c3..0b44530854 100644
--- a/linux-user/i386/target_cpu.h
+++ b/linux-user/i386/target_cpu.h
@@ -29,6 +29,10 @@ static inline void cpu_clone_regs_child(CPUX86State *env,
target_ulong newsp,
env->regs[R_EAX] = 0;
}
+static inline void cpu_clone_regs_parent(CPUX86State *env, unsigned flags)
+{
+}
+
#if defined(TARGET_ABI32)
abi_long do_set_thread_area(CPUX86State *env, abi_ulong ptr);
diff --git a/linux-user/m68k/target_cpu.h b/linux-user/m68k/target_cpu.h
index 57b647bc07..c3f288dfe8 100644
--- a/linux-user/m68k/target_cpu.h
+++ b/linux-user/m68k/target_cpu.h
@@ -30,6 +30,10 @@ static inline void cpu_clone_regs_child(CPUM68KState *env,
target_ulong newsp,
env->dregs[0] = 0;
}
+static inline void cpu_clone_regs_parent(CPUM68KState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUM68KState *env, target_ulong newtls)
{
CPUState *cs = env_cpu(env);
diff --git a/linux-user/microblaze/target_cpu.h
b/linux-user/microblaze/target_cpu.h
index e9bc0fce65..ce7b22ece7 100644
--- a/linux-user/microblaze/target_cpu.h
+++ b/linux-user/microblaze/target_cpu.h
@@ -28,6 +28,10 @@ static inline void cpu_clone_regs_child(CPUMBState *env,
target_ulong newsp,
env->regs[3] = 0;
}
+static inline void cpu_clone_regs_parent(CPUMBState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUMBState *env, target_ulong newtls)
{
env->regs[21] = newtls;
diff --git a/linux-user/mips/target_cpu.h b/linux-user/mips/target_cpu.h
index 8601f712e0..758ae4d933 100644
--- a/linux-user/mips/target_cpu.h
+++ b/linux-user/mips/target_cpu.h
@@ -29,6 +29,10 @@ static inline void cpu_clone_regs_child(CPUMIPSState *env,
target_ulong newsp,
env->active_tc.gpr[2] = 0;
}
+static inline void cpu_clone_regs_parent(CPUMIPSState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUMIPSState *env, target_ulong newtls)
{
env->active_tc.CP0_UserLocal = newtls;
diff --git a/linux-user/nios2/target_cpu.h b/linux-user/nios2/target_cpu.h
index fe5de7a9e3..50f0381067 100644
--- a/linux-user/nios2/target_cpu.h
+++ b/linux-user/nios2/target_cpu.h
@@ -29,6 +29,10 @@ static inline void cpu_clone_regs_child(CPUNios2State *env,
target_ulong newsp,
env->regs[R_RET0] = 0;
}
+static inline void cpu_clone_regs_parent(CPUNios2State *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUNios2State *env, target_ulong newtls)
{
/*
diff --git a/linux-user/openrisc/target_cpu.h b/linux-user/openrisc/target_cpu.h
index 309cf3eeb7..74370d67c4 100644
--- a/linux-user/openrisc/target_cpu.h
+++ b/linux-user/openrisc/target_cpu.h
@@ -30,6 +30,10 @@ static inline void cpu_clone_regs_child(CPUOpenRISCState
*env,
cpu_set_gpr(env, 11, 0);
}
+static inline void cpu_clone_regs_parent(CPUOpenRISCState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUOpenRISCState *env, target_ulong newtls)
{
cpu_set_gpr(env, 10, newtls);
diff --git a/linux-user/ppc/target_cpu.h b/linux-user/ppc/target_cpu.h
index 028b28312c..76b67d2882 100644
--- a/linux-user/ppc/target_cpu.h
+++ b/linux-user/ppc/target_cpu.h
@@ -28,6 +28,10 @@ static inline void cpu_clone_regs_child(CPUPPCState *env,
target_ulong newsp,
env->gpr[3] = 0;
}
+static inline void cpu_clone_regs_parent(CPUPPCState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUPPCState *env, target_ulong newtls)
{
#if defined(TARGET_PPC64)
diff --git a/linux-user/riscv/target_cpu.h b/linux-user/riscv/target_cpu.h
index 26dcafab1c..9c642367a3 100644
--- a/linux-user/riscv/target_cpu.h
+++ b/linux-user/riscv/target_cpu.h
@@ -11,6 +11,10 @@ static inline void cpu_clone_regs_child(CPURISCVState *env,
target_ulong newsp,
env->gpr[xA0] = 0;
}
+static inline void cpu_clone_regs_parent(CPURISCVState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPURISCVState *env, target_ulong newtls)
{
env->gpr[xTP] = newtls;
diff --git a/linux-user/s390x/target_cpu.h b/linux-user/s390x/target_cpu.h
index 0b19e42f75..7cd71e2dba 100644
--- a/linux-user/s390x/target_cpu.h
+++ b/linux-user/s390x/target_cpu.h
@@ -28,6 +28,10 @@ static inline void cpu_clone_regs_child(CPUS390XState *env,
target_ulong newsp,
env->regs[2] = 0;
}
+static inline void cpu_clone_regs_parent(CPUS390XState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUS390XState *env, target_ulong newtls)
{
env->aregs[0] = newtls >> 32;
diff --git a/linux-user/sh4/target_cpu.h b/linux-user/sh4/target_cpu.h
index 857af43ee3..5114f19424 100644
--- a/linux-user/sh4/target_cpu.h
+++ b/linux-user/sh4/target_cpu.h
@@ -28,6 +28,10 @@ static inline void cpu_clone_regs_child(CPUSH4State *env,
target_ulong newsp,
env->gregs[0] = 0;
}
+static inline void cpu_clone_regs_parent(CPUSH4State *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUSH4State *env, target_ulong newtls)
{
env->gbr = newtls;
diff --git a/linux-user/sparc/target_cpu.h b/linux-user/sparc/target_cpu.h
index 029b0fc547..8ff706adce 100644
--- a/linux-user/sparc/target_cpu.h
+++ b/linux-user/sparc/target_cpu.h
@@ -37,6 +37,10 @@ static inline void cpu_clone_regs_child(CPUSPARCState *env,
target_ulong newsp,
#endif
}
+static inline void cpu_clone_regs_parent(CPUSPARCState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUSPARCState *env, target_ulong newtls)
{
env->gregs[7] = newtls;
diff --git a/linux-user/tilegx/target_cpu.h b/linux-user/tilegx/target_cpu.h
index 0523dc414c..316b7a639c 100644
--- a/linux-user/tilegx/target_cpu.h
+++ b/linux-user/tilegx/target_cpu.h
@@ -28,6 +28,10 @@ static inline void cpu_clone_regs_child(CPUTLGState *env,
target_ulong newsp,
env->regs[TILEGX_R_RE] = 0;
}
+static inline void cpu_clone_regs_parent(CPUTLGState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUTLGState *env, target_ulong newtls)
{
env->regs[TILEGX_R_TP] = newtls;
diff --git a/linux-user/xtensa/target_cpu.h b/linux-user/xtensa/target_cpu.h
index 84f67d469e..0c77bafd66 100644
--- a/linux-user/xtensa/target_cpu.h
+++ b/linux-user/xtensa/target_cpu.h
@@ -16,6 +16,10 @@ static inline void cpu_clone_regs_child(CPUXtensaState *env,
env->regs[2] = 0;
}
+static inline void cpu_clone_regs_parent(CPUXtensaState *env, unsigned flags)
+{
+}
+
static inline void cpu_set_tls(CPUXtensaState *env, target_ulong newtls)
{
env->uregs[THREADPTR] = newtls;
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 93749014e4..96cf9deb3d 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5720,6 +5720,7 @@ static int do_fork(CPUArchState *env, unsigned int flags,
abi_ulong newsp,
new_env = cpu_copy(env);
/* Init regs that differ from the parent. */
cpu_clone_regs_child(new_env, newsp, flags);
+ cpu_clone_regs_parent(env, flags);
new_cpu = env_cpu(new_env);
new_cpu->opaque = ts;
ts->bprm = parent_ts->bprm;
@@ -5816,6 +5817,7 @@ static int do_fork(CPUArchState *env, unsigned int flags,
abi_ulong newsp,
if (flags & CLONE_CHILD_CLEARTID)
ts->child_tidptr = child_tidptr;
} else {
+ cpu_clone_regs_parent(env, flags);
fork_end(0);
}
}
--
2.17.1
- [PATCH v3 00/12] linux-user sparc fixes, Richard Henderson, 2019/11/06
- [PATCH v3 02/12] tests/tcg/multiarch/linux-test: Fix error check for shmat, Richard Henderson, 2019/11/06
- [PATCH v3 01/12] scripts/qemu-binfmt-conf: Update for sparc64, Richard Henderson, 2019/11/06
- [PATCH v3 03/12] target/sparc: Define an enumeration for accessing env->regwptr, Richard Henderson, 2019/11/06
- [PATCH v3 04/12] linux-user/sparc: Use WREG constants in sparc/target_cpu.h, Richard Henderson, 2019/11/06
- [PATCH v3 06/12] linux-user/sparc: Use WREG_SP constant in sparc/signal.c, Richard Henderson, 2019/11/06
- [PATCH v3 05/12] linux-user/sparc: Begin using WREG constants in sparc/signal.c, Richard Henderson, 2019/11/06
- [PATCH v3 07/12] linux-user/sparc: Fix WREG usage in setup_frame, Richard Henderson, 2019/11/06
- [PATCH v3 08/12] linux-user/sparc64: Fix target_signal_frame, Richard Henderson, 2019/11/06
- [PATCH v3 09/12] linux-user: Rename cpu_clone_regs to cpu_clone_regs_child, Richard Henderson, 2019/11/06
- [PATCH v3 10/12] linux-user: Introduce cpu_clone_regs_parent,
Richard Henderson <=
- [PATCH v3 11/12] linux-user/sparc: Fix cpu_clone_regs_*, Richard Henderson, 2019/11/06
- [PATCH v3 12/12] linux-user/alpha: Set r20 secondary return value, Richard Henderson, 2019/11/06
- Re: [PATCH v3 00/12] linux-user sparc fixes, Laurent Vivier, 2019/11/06
- Re: [PATCH v3 00/12] linux-user sparc fixes, no-reply, 2019/11/06