From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: laurent@vivier.eu
Subject: [PATCH v2 18/41] linux-user/signal: Drop HOST_SIGNAL_PLACEHOLDER
Date: Sat, 18 Sep 2021 11:45:04 -0700 [thread overview]
Message-ID: <20210918184527.408540-19-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210918184527.408540-1-richard.henderson@linaro.org>
Now that all of the linux-user hosts have been converted
to host-signal.h, drop the compatibility code.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
include/exec/exec-all.h | 12 ------------
linux-user/signal.c | 13 -------------
2 files changed, 25 deletions(-)
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 5f94d799aa..5dd663c153 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -685,18 +685,6 @@ MMUAccessType adjust_signal_pc(uintptr_t *pc, bool is_write);
bool handle_sigsegv_accerr_write(CPUState *cpu, sigset_t *old_set,
uintptr_t host_pc, abi_ptr guest_addr);
-/**
- * cpu_signal_handler
- * @signum: host signal number
- * @pinfo: host siginfo_t
- * @puc: host ucontext_t
- *
- * To be called from the SIGBUS and SIGSEGV signal handler to inform the
- * virtual cpu of exceptions. Returns true if the signal was handled by
- * the virtual CPU.
- */
-int cpu_signal_handler(int signum, void *pinfo, void *puc);
-
#else
static inline void mmap_lock(void) {}
static inline void mmap_unlock(void) {}
diff --git a/linux-user/signal.c b/linux-user/signal.c
index 6f953f10d4..e6531fdfa0 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -773,16 +773,6 @@ static void host_signal_handler(int host_sig, siginfo_t *info, void *puc)
ucontext_t *uc = puc;
struct emulated_sigtable *k;
int guest_sig;
-
-#ifdef HOST_SIGNAL_PLACEHOLDER
- /* the CPU emulator uses some host signals to detect exceptions,
- we forward to it some signals */
- if ((host_sig == SIGSEGV || host_sig == SIGBUS)
- && info->si_code > 0) {
- if (cpu_signal_handler(host_sig, info, puc))
- return;
- }
-#else
uintptr_t pc = 0;
bool sync_sig = false;
@@ -842,7 +832,6 @@ static void host_signal_handler(int host_sig, siginfo_t *info, void *puc)
sync_sig = true;
}
-#endif
/* get target signal number */
guest_sig = host_to_target_signal(host_sig);
@@ -857,7 +846,6 @@ static void host_signal_handler(int host_sig, siginfo_t *info, void *puc)
k->pending = guest_sig;
ts->signal_pending = 1;
-#ifndef HOST_SIGNAL_PLACEHOLDER
/*
* For synchronous signals, unwind the cpu state to the faulting
* insn and then exit back to the main loop so that the signal
@@ -867,7 +855,6 @@ static void host_signal_handler(int host_sig, siginfo_t *info, void *puc)
cpu->exception_index = EXCP_INTERRUPT;
cpu_loop_exit_restore(cpu, pc);
}
-#endif
rewind_if_in_safe_syscall(puc);
--
2.25.1
next prev parent reply other threads:[~2021-09-18 19:07 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-18 18:44 [PATCH v2 00/41] linux-user: Streamline handling of SIGSEGV Richard Henderson
2021-09-18 18:44 ` [PATCH v2 01/41] accel/tcg: Split out adjust_signal_pc Richard Henderson
2021-09-18 18:44 ` [PATCH v2 02/41] accel/tcg: Move clear_helper_retaddr to cpu loop Richard Henderson
2021-09-19 19:35 ` Warner Losh
2021-09-18 18:44 ` [PATCH v2 03/41] accel/tcg: Split out handle_sigsegv_accerr_write Richard Henderson
2021-09-18 18:44 ` [PATCH v2 04/41] accel/tcg: Fold cpu_exit_tb_from_sighandler into caller Richard Henderson
2021-09-18 18:44 ` [PATCH v2 05/41] configure: Merge riscv32 and riscv64 host architectures Richard Henderson
2021-09-19 17:56 ` Philippe Mathieu-Daudé
2021-09-19 22:57 ` Alistair Francis
2021-09-18 18:44 ` [PATCH v2 06/41] linux-user: Reorg handling for SIGSEGV Richard Henderson
2021-09-19 18:02 ` Philippe Mathieu-Daudé
2021-09-19 19:01 ` Warner Losh
2021-09-19 23:01 ` Alistair Francis
2021-09-18 18:44 ` [PATCH v2 07/41] linux-user/host/x86: Populate host_signal.h Richard Henderson
2021-09-18 18:44 ` [PATCH v2 08/41] linux-user/host/ppc: " Richard Henderson
2021-09-19 19:34 ` Warner Losh
2021-09-18 18:44 ` [PATCH v2 09/41] linux-user/host/alpha: " Richard Henderson
2021-09-19 18:03 ` Philippe Mathieu-Daudé
2021-09-19 18:07 ` Richard Henderson
2021-09-19 18:11 ` Philippe Mathieu-Daudé
2021-09-19 18:13 ` Philippe Mathieu-Daudé
2021-09-18 18:44 ` [PATCH v2 10/41] linux-user/host/sparc: " Richard Henderson
2021-09-18 18:44 ` [PATCH v2 11/41] linux-user/host/arm: " Richard Henderson
2021-09-18 18:44 ` [PATCH v2 12/41] linux-user/host/aarch64: " Richard Henderson
2021-09-18 18:44 ` [PATCH v2 13/41] linux-user/host/s390: " Richard Henderson
2021-09-19 18:07 ` Philippe Mathieu-Daudé
2021-09-18 18:45 ` [PATCH v2 14/41] linux-user/host/mips: " Richard Henderson
2021-09-19 18:08 ` Philippe Mathieu-Daudé
2021-09-18 18:45 ` [PATCH v2 15/41] linux-user/host/riscv: " Richard Henderson
2021-09-18 18:45 ` [PATCH v2 16/41] target/arm: Fixup comment re handle_cpu_signal Richard Henderson
2021-09-18 18:45 ` [PATCH v2 17/41] linux-user/host/riscv: Improve host_signal_write Richard Henderson
2021-09-18 18:45 ` Richard Henderson [this message]
2021-09-19 18:18 ` [PATCH v2 18/41] linux-user/signal: Drop HOST_SIGNAL_PLACEHOLDER Philippe Mathieu-Daudé
2021-09-19 18:59 ` Warner Losh
2021-09-18 18:45 ` [PATCH v2 19/41] hw/core: Add TCGCPUOps.record_sigsegv Richard Henderson
2021-09-19 18:22 ` Philippe Mathieu-Daudé
2021-09-19 18:24 ` Philippe Mathieu-Daudé
2021-09-19 18:32 ` Richard Henderson
2021-09-18 18:45 ` [PATCH v2 20/41] linux-user: Add raise_sigsegv Richard Henderson
2021-09-19 18:26 ` Philippe Mathieu-Daudé
2021-09-19 18:35 ` Richard Henderson
2021-09-19 18:43 ` Philippe Mathieu-Daudé
2021-09-19 18:53 ` Warner Losh
2021-09-18 18:45 ` [PATCH v2 21/41] target/alpha: Make alpha_cpu_tlb_fill sysemu only Richard Henderson
2021-09-18 18:45 ` [PATCH v2 22/41] target/arm: Use raise_sigsegv for mte tag lookup Richard Henderson
2021-09-18 18:45 ` [PATCH v2 23/41] target/arm: Implement arm_cpu_record_sigsegv Richard Henderson
2021-09-18 18:45 ` [PATCH v2 24/41] target/cris: Make cris_cpu_tlb_fill sysemu only Richard Henderson
2021-09-19 18:28 ` Philippe Mathieu-Daudé
2021-09-18 18:45 ` [PATCH v2 25/41] target/hexagon: Remove hexagon_cpu_tlb_fill Richard Henderson
2021-09-18 18:45 ` [PATCH v2 26/41] target/hppa: Make hppa_cpu_tlb_fill sysemu only Richard Henderson
2021-09-18 18:45 ` [PATCH v2 27/41] target/i386: Implement x86_cpu_record_sigsegv Richard Henderson
2021-09-19 18:32 ` Philippe Mathieu-Daudé
2021-09-19 18:59 ` Warner Losh
2021-09-18 18:45 ` [PATCH v2 28/41] target/m68k: Make m68k_cpu_tlb_fill sysemu only Richard Henderson
2021-09-18 18:45 ` [PATCH v2 29/41] target/microblaze: Make mb_cpu_tlb_fill " Richard Henderson
2021-09-18 18:45 ` [PATCH v2 30/41] target/mips: Make mips_cpu_tlb_fill " Richard Henderson
2021-09-18 18:45 ` [PATCH v2 31/41] target/nios2: Make nios2_cpu_tlb_fill " Richard Henderson
2021-09-18 18:45 ` [PATCH v2 32/41] linux-user/openrisc: Adjust signal for EXCP_RANGE, EXCP_FPE Richard Henderson
2021-09-18 18:45 ` [PATCH v2 33/41] target/openrisc: Make openrisc_cpu_tlb_fill sysemu only Richard Henderson
2021-09-18 18:45 ` [PATCH v2 34/41] target/ppc: Implement ppc_cpu_record_sigsegv Richard Henderson
2021-09-19 18:37 ` Philippe Mathieu-Daudé
2021-09-18 18:45 ` [PATCH v2 35/41] target/riscv: Make riscv_cpu_tlb_fill sysemu only Richard Henderson
2021-09-18 18:45 ` [PATCH v2 36/41] target/s390x: Use probe_access_flags in s390_probe_access Richard Henderson
2021-09-18 18:45 ` [PATCH v2 37/41] target/s390x: Implement s390_cpu_record_sigsegv Richard Henderson
2021-09-19 18:39 ` Philippe Mathieu-Daudé
2021-09-18 18:45 ` [PATCH v2 38/41] target/sh4: Make sh4_cpu_tlb_fill sysemu only Richard Henderson
2021-09-18 18:45 ` [PATCH v2 39/41] target/sparc: Make sparc_cpu_tlb_fill " Richard Henderson
2021-09-18 18:45 ` [PATCH v2 40/41] target/xtensa: Make xtensa_cpu_tlb_fill " Richard Henderson
2021-09-18 18:45 ` [PATCH v2 41/41] accel/tcg: Restrict TCGCPUOps::tlb_fill() to sysemu Richard Henderson
2021-09-19 18:40 ` Philippe Mathieu-Daudé
2021-09-19 10:38 ` [PATCH v2 00/41] linux-user: Streamline handling of SIGSEGV Philippe Mathieu-Daudé
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