#include "exec/exec-all.h"
#include "exec/helper-proto.h"
#include "exec/cpu_ldst.h"
+#include "sysemu/sysemu.h"
+#include "qemu/timer.h"
+
void QEMU_NORETURN HELPER(excp)(CPUHPPAState *env, int excp)
{
cpu_loop_exit(cs);
}
-static void QEMU_NORETURN dynexcp(CPUHPPAState *env, int excp, uintptr_t ra)
+void QEMU_NORETURN hppa_dynamic_excp(CPUHPPAState *env, int excp, uintptr_t ra)
{
HPPACPU *cpu = hppa_env_get_cpu(env);
CPUState *cs = CPU(cpu);
cpu_loop_exit_restore(cs, ra);
}
-void HELPER(tsv)(CPUHPPAState *env, target_ulong cond)
+void HELPER(tsv)(CPUHPPAState *env, target_ureg cond)
{
- if (unlikely((target_long)cond < 0)) {
- dynexcp(env, EXCP_OVERFLOW, GETPC());
+ if (unlikely((target_sreg)cond < 0)) {
+ hppa_dynamic_excp(env, EXCP_OVERFLOW, GETPC());
}
}
-void HELPER(tcond)(CPUHPPAState *env, target_ulong cond)
+void HELPER(tcond)(CPUHPPAState *env, target_ureg cond)
{
if (unlikely(cond)) {
- dynexcp(env, EXCP_COND, GETPC());
+ hppa_dynamic_excp(env, EXCP_COND, GETPC());
}
}
#endif
}
-static void do_stby_b(CPUHPPAState *env, target_ulong addr, target_ulong val,
+static void do_stby_b(CPUHPPAState *env, target_ulong addr, target_ureg val,
bool parallel)
{
uintptr_t ra = GETPC();
}
}
-void HELPER(stby_b)(CPUHPPAState *env, target_ulong addr, target_ulong val)
+void HELPER(stby_b)(CPUHPPAState *env, target_ulong addr, target_ureg val)
{
do_stby_b(env, addr, val, false);
}
void HELPER(stby_b_parallel)(CPUHPPAState *env, target_ulong addr,
- target_ulong val)
+ target_ureg val)
{
do_stby_b(env, addr, val, true);
}
-static void do_stby_e(CPUHPPAState *env, target_ulong addr, target_ulong val,
+static void do_stby_e(CPUHPPAState *env, target_ulong addr, target_ureg val,
bool parallel)
{
uintptr_t ra = GETPC();
}
}
-void HELPER(stby_e)(CPUHPPAState *env, target_ulong addr, target_ulong val)
+void HELPER(stby_e)(CPUHPPAState *env, target_ulong addr, target_ureg val)
{
do_stby_e(env, addr, val, false);
}
void HELPER(stby_e_parallel)(CPUHPPAState *env, target_ulong addr,
- target_ulong val)
+ target_ureg val)
{
do_stby_e(env, addr, val, true);
}
-target_ulong HELPER(probe_r)(target_ulong addr)
+target_ureg HELPER(probe_r)(target_ulong addr)
{
#ifdef CONFIG_USER_ONLY
return page_check_range(addr, 1, PAGE_READ);
#endif
}
-target_ulong HELPER(probe_w)(target_ulong addr)
+target_ureg HELPER(probe_w)(target_ulong addr)
{
#ifdef CONFIG_USER_ONLY
return page_check_range(addr, 1, PAGE_WRITE);
env->fr[0] = (uint64_t)shadow << 32;
if (hard_exp & shadow) {
- dynexcp(env, EXCP_ASSIST, ra);
+ hppa_dynamic_excp(env, EXCP_ASSIST, ra);
}
}
update_fr0_op(env, GETPC());
return ret;
}
+
+target_ureg HELPER(read_interval_timer)(void)
+{
+#ifdef CONFIG_USER_ONLY
+ /* In user-mode, QEMU_CLOCK_VIRTUAL doesn't exist.
+ Just pass through the host cpu clock ticks. */
+ return cpu_get_host_ticks();
+#else
+ /* In system mode we have access to a decent high-resolution clock.
+ In order to make OS-level time accounting work with the cr16,
+ present it with a well-timed clock fixed at 250MHz. */
+ return qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) >> 2;
+#endif
+}
+
+#ifndef CONFIG_USER_ONLY
+void HELPER(write_interval_timer)(CPUHPPAState *env, target_ureg val)
+{
+ HPPACPU *cpu = hppa_env_get_cpu(env);
+ uint64_t current = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+ uint64_t timeout;
+
+ /* Even in 64-bit mode, the comparator is always 32-bit. But the
+ value we expose to the guest is 1/4 of the speed of the clock,
+ so moosh in 34 bits. */
+ timeout = deposit64(current, 0, 34, (uint64_t)val << 2);
+
+ /* If the mooshing puts the clock in the past, advance to next round. */
+ if (timeout < current + 1000) {
+ timeout += 1ULL << 34;
+ }
+
+ cpu->env.cr[CR_IT] = timeout;
+ timer_mod(cpu->alarm_timer, timeout);
+}
+
+void HELPER(halt)(CPUHPPAState *env)
+{
+ qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ helper_excp(env, EXCP_HLT);
+}
+
+void HELPER(reset)(CPUHPPAState *env)
+{
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+ helper_excp(env, EXCP_HLT);
+}
+
+target_ureg HELPER(swap_system_mask)(CPUHPPAState *env, target_ureg nsm)
+{
+ target_ulong psw = env->psw;
+ /* ??? On second reading this condition simply seems
+ to be undefined rather than a diagnosed trap. */
+ if (nsm & ~psw & PSW_Q) {
+ hppa_dynamic_excp(env, EXCP_ILL, GETPC());
+ }
+ env->psw = (psw & ~PSW_SM) | (nsm & PSW_SM);
+ return psw & PSW_SM;
+}
+
+void HELPER(rfi)(CPUHPPAState *env)
+{
+ /* ??? On second reading this condition simply seems
+ to be undefined rather than a diagnosed trap. */
+ if (env->psw & (PSW_I | PSW_R | PSW_Q)) {
+ helper_excp(env, EXCP_ILL);
+ }
+ env->iasq_f = (uint64_t)env->cr[CR_IIASQ] << 32;
+ env->iasq_b = (uint64_t)env->cr_back[0] << 32;
+ env->iaoq_f = env->cr[CR_IIAOQ];
+ env->iaoq_b = env->cr_back[1];
+ cpu_hppa_put_psw(env, env->cr[CR_IPSW]);
+}
+
+void HELPER(rfi_r)(CPUHPPAState *env)
+{
+ env->gr[1] = env->shadow[0];
+ env->gr[8] = env->shadow[1];
+ env->gr[9] = env->shadow[2];
+ env->gr[16] = env->shadow[3];
+ env->gr[17] = env->shadow[4];
+ env->gr[24] = env->shadow[5];
+ env->gr[25] = env->shadow[6];
+ helper_rfi(env);
+}
+#endif
projects / qemu.git / blobdiff