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bsd-user/x86_64/target_arch_cpu.h: int $80 never was a BSD system call on amd64

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Although initial versions of NetBSD did use int $80, it was replaced by
syscall before any releases. OpenBSD and FreeBSD always did syscall.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Warner Losh 2022-01-29 19:23:12 -07:00
parent d19401825d
commit 872b349f61
1 changed files with 0 additions and 58 deletions
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58
bsd-user/x86_64/target_arch_cpu.h
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@ -124,64 +124,6 @@ static inline void target_cpu_loop(CPUX86State *env)
process_queued_cpu_work(cs);
switch (trapnr) {
case 0x80:
/* syscall from int $0x80 */
if (bsd_type == target_freebsd) {
abi_ulong params = (abi_ulong) env->regs[R_ESP] +
sizeof(int32_t);
int32_t syscall_nr = env->regs[R_EAX];
int32_t arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8;
if (syscall_nr == TARGET_FREEBSD_NR_syscall) {
get_user_s32(syscall_nr, params);
params += sizeof(int32_t);
} else if (syscall_nr == TARGET_FREEBSD_NR___syscall) {
get_user_s32(syscall_nr, params);
params += sizeof(int64_t);
}
get_user_s32(arg1, params);
params += sizeof(int32_t);
get_user_s32(arg2, params);
params += sizeof(int32_t);
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);
params += sizeof(int32_t);
get_user_s32(arg7, params);
params += sizeof(int32_t);
get_user_s32(arg8, params);
env->regs[R_EAX] = do_freebsd_syscall(env,
syscall_nr,
arg1,
arg2,
arg3,
arg4,
arg5,
arg6,
arg7,
arg8);
} else { /* if (bsd_type == target_openbsd) */
env->regs[R_EAX] = do_openbsd_syscall(env,
env->regs[R_EAX],
env->regs[R_EBX],
env->regs[R_ECX],
env->regs[R_EDX],
env->regs[R_ESI],
env->regs[R_EDI],
env->regs[R_EBP]);
}
if (((abi_ulong)env->regs[R_EAX]) >= (abi_ulong)(-515)) {
env->regs[R_EAX] = -env->regs[R_EAX];
env->eflags |= CC_C;
} else {
env->eflags &= ~CC_C;
}
break;
case EXCP_SYSCALL:
/* syscall from syscall instruction */
if (bsd_type == target_freebsd) {