From: Warner Losh <imp@bsdimp.com>
To: qemu-devel@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>,
arrowd@FreeBSD.org, Kyle Evans <kevans@freebsd.org>,
Richard Henderson <richard.henderson@linaro.org>,
def@FreeBSD.org, jrtc27@FreeBSD.org, Warner Losh <imp@bsdimp.com>,
Brad Smith <brad@comstyle.com>
Subject: [PATCH 05/22] bsd-user/arm/target_arch_cpu.h: Only support FreeBSD sys calls
Date: Tue, 1 Feb 2022 04:14:38 -0700 [thread overview]
Message-ID: <20220201111455.52511-6-imp@bsdimp.com> (raw)
In-Reply-To: <20220201111455.52511-1-imp@bsdimp.com>
Since we don't build on OpenBSD, only do FreeBSD system calls here. In
the future, we'll need to move this to some place like
bsd-user/freebsd/arm/mumble.h, but until then just leave this
inline. This reflects changes to the upstream.
Signed-off-by: Warner Losh <imp@bsdimp.com>
---
bsd-user/arm/target_arch_cpu.h | 139 ++++++++++++++++-----------------
1 file changed, 66 insertions(+), 73 deletions(-)
diff --git a/bsd-user/arm/target_arch_cpu.h b/bsd-user/arm/target_arch_cpu.h
index b087db48fa4..afb7814a8d1 100644
--- a/bsd-user/arm/target_arch_cpu.h
+++ b/bsd-user/arm/target_arch_cpu.h
@@ -40,7 +40,6 @@ static inline void target_cpu_init(CPUARMState *env,
static inline void target_cpu_loop(CPUARMState *env)
{
int trapnr, si_signo, si_code;
- unsigned int n;
CPUState *cs = env_cpu(env);
for (;;) {
@@ -66,82 +65,76 @@ static inline void target_cpu_loop(CPUARMState *env)
break;
case EXCP_SWI:
{
- n = env->regs[7];
- if (bsd_type == target_freebsd) {
- int ret;
- abi_ulong params = get_sp_from_cpustate(env);
- int32_t syscall_nr = n;
- int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
+ int ret;
+ abi_ulong params = get_sp_from_cpustate(env);
+ int32_t syscall_nr = env->regs[7];
+ int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
- /* See arm/arm/syscall.c cpu_fetch_syscall_args() */
- if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
- syscall_nr = env->regs[0];
- arg1 = env->regs[1];
- arg2 = env->regs[2];
- arg3 = env->regs[3];
- get_user_s32(arg4, params);
- params += sizeof(int32_t);
- get_user_s32(arg5, params);
- params += sizeof(int32_t);
- get_user_s32(arg6, params);
- params += sizeof(int32_t);
- get_user_s32(arg7, params);
- arg8 = 0;
- } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
- syscall_nr = env->regs[0];
- arg1 = env->regs[2];
- arg2 = env->regs[3];
- get_user_s32(arg3, params);
- params += sizeof(int32_t);
- get_user_s32(arg4, params);
- params += sizeof(int32_t);
- get_user_s32(arg5, params);
- params += sizeof(int32_t);
- get_user_s32(arg6, params);
- arg7 = 0;
- arg8 = 0;
- } else {
- arg1 = env->regs[0];
- arg2 = env->regs[1];
- arg3 = env->regs[2];
- arg4 = env->regs[3];
- get_user_s32(arg5, params);
- params += sizeof(int32_t);
- get_user_s32(arg6, params);
- params += sizeof(int32_t);
- get_user_s32(arg7, params);
- params += sizeof(int32_t);
- get_user_s32(arg8, params);
- }
- ret = do_freebsd_syscall(env, syscall_nr, arg1, arg2, arg3,
- arg4, arg5, arg6, arg7, arg8);
+ /* See arm/arm/syscall.c cpu_fetch_syscall_args() */
+ if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
+ syscall_nr = env->regs[0];
+ arg1 = env->regs[1];
+ arg2 = env->regs[2];
+ arg3 = env->regs[3];
+ get_user_s32(arg4, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg5, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg6, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg7, params);
+ arg8 = 0;
+ } else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
+ syscall_nr = env->regs[0];
+ arg1 = env->regs[2];
+ arg2 = env->regs[3];
+ get_user_s32(arg3, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg4, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg5, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg6, params);
+ arg7 = 0;
+ arg8 = 0;
+ } else {
+ arg1 = env->regs[0];
+ arg2 = env->regs[1];
+ arg3 = env->regs[2];
+ arg4 = env->regs[3];
+ get_user_s32(arg5, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg6, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg7, params);
+ params += sizeof(int32_t);
+ get_user_s32(arg8, params);
+ }
+ ret = do_freebsd_syscall(env, syscall_nr, arg1, arg2, arg3,
+ arg4, arg5, arg6, arg7, arg8);
+ /*
+ * Compare to arm/arm/vm_machdep.c
+ * cpu_set_syscall_retval()
+ */
+ if (-TARGET_EJUSTRETURN == ret) {
/*
- * Compare to arm/arm/vm_machdep.c
- * cpu_set_syscall_retval()
+ * Returning from a successful sigreturn syscall.
+ * Avoid clobbering register state.
*/
- if (-TARGET_EJUSTRETURN == ret) {
- /*
- * Returning from a successful sigreturn syscall.
- * Avoid clobbering register state.
- */
- break;
- }
- if (-TARGET_ERESTART == ret) {
- env->regs[15] -= env->thumb ? 2 : 4;
- break;
- }
- if ((unsigned int)ret >= (unsigned int)(-515)) {
- ret = -ret;
- cpsr_write(env, CPSR_C, CPSR_C, CPSRWriteByInstr);
- env->regs[0] = ret;
- } else {
- cpsr_write(env, 0, CPSR_C, CPSRWriteByInstr);
- env->regs[0] = ret; /* XXX need to handle lseek()? */
- /* env->regs[1] = 0; */
- }
+ break;
+ }
+ if (-TARGET_ERESTART == ret) {
+ env->regs[15] -= env->thumb ? 2 : 4;
+ break;
+ }
+ if ((unsigned int)ret >= (unsigned int)(-515)) {
+ ret = -ret;
+ cpsr_write(env, CPSR_C, CPSR_C, CPSRWriteByInstr);
+ env->regs[0] = ret;
} else {
- fprintf(stderr, "qemu: bsd_type (= %d) syscall "
- "not supported\n", bsd_type);
+ cpsr_write(env, 0, CPSR_C, CPSRWriteByInstr);
+ env->regs[0] = ret; /* XXX need to handle lseek()? */
+ /* env->regs[1] = 0; */
}
}
break;
--
2.33.1
next prev parent reply other threads:[~2022-02-01 11:28 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-01 11:14 [PATCH 00/22] bsd-user: Start upstreaming the system calls Warner Losh
2022-02-01 11:14 ` [PATCH 01/22] bsd-user/main.c: Drop syscall flavor arg -bsd Warner Losh
2022-02-01 15:54 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 02/22] bsd-user/x86_64/target_arch_cpu.h: int $80 never was a BSD system call on amd64 Warner Losh
2022-02-01 15:57 ` Richard Henderson
2022-02-01 16:19 ` Kyle Evans
2022-02-01 11:14 ` [PATCH 03/22] bsd-user/x86_64/target_arch_cpu.h: Remove openbsd syscall Warner Losh
2022-02-01 16:22 ` Kyle Evans
2022-02-01 23:13 ` Warner Losh
2022-02-01 17:27 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 04/22] bsd-user/i386/target_arch_cpu.h: " Warner Losh
2022-02-01 16:24 ` Kyle Evans
2022-02-01 17:29 ` Richard Henderson
2022-02-01 11:14 ` Warner Losh [this message]
2022-02-01 16:32 ` [PATCH 05/22] bsd-user/arm/target_arch_cpu.h: Only support FreeBSD sys calls Kyle Evans
2022-02-01 23:19 ` Warner Losh
2022-02-01 17:31 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 06/22] bsd-user/arm/target_arch_thread.h: Assume a FreeBSD target Warner Losh
2022-02-01 16:33 ` Kyle Evans
2022-02-01 17:34 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 07/22] bsd-user/x86_64/target_arch_thread.h: " Warner Losh
2022-02-01 16:36 ` Kyle Evans
2022-02-01 17:34 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 08/22] bsd-user: Remove bsd_type Warner Losh
2022-02-01 16:34 ` Kyle Evans
2022-02-01 17:35 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 09/22] bsd-user/freebsd/os-syscall.c: Move syscall processing here Warner Losh
2022-02-01 16:18 ` Kyle Evans
2022-02-01 17:37 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 10/22] bsd-user: Move system call building to os-syscall.c Warner Losh
2022-02-01 17:38 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 11/22] bsd-user/sycall.c: Now obsolete, remove Warner Losh
2022-02-01 16:35 ` Kyle Evans
2022-02-01 17:38 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 12/22] bsd-user/freebsd/os-syscall.c: Add get_errno and host_to_target_errno Warner Losh
2022-02-01 16:35 ` Kyle Evans
2022-02-01 17:39 ` Richard Henderson
2022-02-01 23:27 ` Warner Losh
2022-02-01 11:14 ` [PATCH 13/22] bsd-user/bsd-file.h: Implementation details for the filesystem calls Warner Losh
2022-02-01 16:47 ` Kyle Evans
2022-02-01 17:43 ` Richard Henderson
2022-02-01 23:55 ` Warner Losh
2022-02-26 16:24 ` Warner Losh
2022-02-01 11:14 ` [PATCH 14/22] bsd-user/freebsd/os-syscall.c: lock_iovec Warner Losh
2022-02-01 16:46 ` Kyle Evans
2022-02-01 21:16 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 15/22] bsd-user/freebsd/os-syscall.c: unlock_iovec Warner Losh
2022-02-01 16:37 ` Kyle Evans
2022-02-01 21:29 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 16/22] bsd-user/freebsd/os-syscall.c: Tracing and error boilerplate Warner Losh
2022-02-01 21:31 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 17/22] bsd-user: introduce target.h Warner Losh
2022-02-01 16:39 ` Kyle Evans
2022-02-01 21:32 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 18/22] bsd-user: Define target_arg64 Warner Losh
2022-02-01 16:41 ` Kyle Evans
2022-02-01 21:33 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 19/22] bsd-user: Add safe system call macros Warner Losh
2022-02-01 21:33 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 20/22] bsd-user/bsd-file.h: Add implementations for read, pread, readv and preadv Warner Losh
2022-02-01 21:37 ` Richard Henderson
2022-02-02 3:02 ` Warner Losh
2022-02-01 11:14 ` [PATCH 21/22] bsd-user/bsd-file.h: Meat of the write system calls Warner Losh
2022-02-01 21:38 ` Richard Henderson
2022-02-01 11:14 ` [PATCH 22/22] bsd-user/freebsd/os-syscall.c: Implement exit Warner Losh
2022-02-01 16:48 ` Kyle Evans
2022-02-01 21:39 ` Richard Henderson
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