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linux-user: Support tilegx architecture in linux-user

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Add main working flow feature, system call processing feature, and elf64
tilegx binary loading feature, based on Linux kernel tilegx 64-bit
implementation.

[rth: Moved all of the implementation of atomic instructions to a later patch.]

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <BLU436-SMTP938552D42808AA60634582B9660@phx.gbl>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Chen Gang 2015-08-21 05:36:37 +08:00 • committed by Richard Henderson
parent 2cb154bc19
commit b16189b222
4 changed files with 103 additions and 5 deletions
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69
linux-user/main.c
View file

@ -3412,6 +3412,64 @@ void cpu_loop(CPUS390XState *env)
#endif /* TARGET_S390X */
#ifdef TARGET_TILEGX
static void gen_sigsegv_maperr(CPUTLGState *env, target_ulong addr)
{
target_siginfo_t info;
info.si_signo = TARGET_SIGSEGV;
info.si_errno = 0;
info.si_code = TARGET_SEGV_MAPERR;
info._sifields._sigfault._addr = addr;
queue_signal(env, info.si_signo, &info);
}
static void gen_sigill_reg(CPUTLGState *env)
{
target_siginfo_t info;
info.si_signo = TARGET_SIGILL;
info.si_errno = 0;
info.si_code = TARGET_ILL_PRVREG;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
}
void cpu_loop(CPUTLGState *env)
{
CPUState *cs = CPU(tilegx_env_get_cpu(env));
int trapnr;
while (1) {
cpu_exec_start(cs);
trapnr = cpu_tilegx_exec(cs);
cpu_exec_end(cs);
switch (trapnr) {
case TILEGX_EXCP_SYSCALL:
env->regs[TILEGX_R_RE] = do_syscall(env, env->regs[TILEGX_R_NR],
env->regs[0], env->regs[1],
env->regs[2], env->regs[3],
env->regs[4], env->regs[5],
env->regs[6], env->regs[7]);
env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(env->regs[TILEGX_R_RE])
? - env->regs[TILEGX_R_RE]
: 0;
break;
case TILEGX_EXCP_REG_IDN_ACCESS:
case TILEGX_EXCP_REG_UDN_ACCESS:
gen_sigill_reg(env);
break;
default:
fprintf(stderr, "trapnr is %d[0x%x].\n", trapnr, trapnr);
g_assert_not_reached();
}
process_pending_signals(env);
}
}
#endif
THREAD CPUState *thread_cpu;
void task_settid(TaskState *ts)
@ -4377,6 +4435,17 @@ int main(int argc, char **argv, char **envp)
env->psw.mask = regs->psw.mask;
env->psw.addr = regs->psw.addr;
}
#elif defined(TARGET_TILEGX)
{
int i;
for (i = 0; i < TILEGX_R_COUNT; i++) {
env->regs[i] = regs->regs[i];
}
for (i = 0; i < TILEGX_SPR_COUNT; i++) {
env->spregs[i] = 0;
}
env->pc = regs->pc;
}
#else
#error unsupported target CPU
#endif