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authorMike Frysinger <vapier@gentoo.org>2015-06-15 19:22:38 +0545
committerMike Frysinger <vapier@gentoo.org>2015-06-17 13:19:51 -0400
commit7d5c6c43ca8a5dd5491f4a58e977ec5501386ee3 (patch)
treebc347f539bd5eb379bd6b8ce9adef4cdff2a9248 /sim/m32r/traps.c
parent61a0c964e611eaf72489c3049ba206b2f91ea4a9 (diff)
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sim: syscall: add common sim_syscall helpers
Many ports have the same sim syscall logic, so add some helpers to handle all the common details. The arches still have to deal with the unpacking and packing of the syscall arguments, but the rest of the sim<->callback glue is now shared.
Diffstat (limited to 'sim/m32r/traps.c')
-rw-r--r--sim/m32r/traps.c35
1 files changed, 14 insertions, 21 deletions
diff --git a/sim/m32r/traps.c b/sim/m32r/traps.c
index 869b596..225c37f 100644
--- a/sim/m32r/traps.c
+++ b/sim/m32r/traps.c
@@ -129,27 +129,20 @@ m32r_trap (SIM_CPU *current_cpu, PCADDR pc, int num)
{
case TRAP_SYSCALL :
{
- CB_SYSCALL s;
-
- CB_SYSCALL_INIT (&s);
- s.func = m32rbf_h_gr_get (current_cpu, 0);
- s.arg1 = m32rbf_h_gr_get (current_cpu, 1);
- s.arg2 = m32rbf_h_gr_get (current_cpu, 2);
- s.arg3 = m32rbf_h_gr_get (current_cpu, 3);
-
- if (s.func == TARGET_SYS_exit)
- {
- sim_engine_halt (sd, current_cpu, NULL, pc, sim_exited, s.arg1);
- }
-
- s.p1 = (PTR) sd;
- s.p2 = (PTR) current_cpu;
- s.read_mem = sim_syscall_read_mem;
- s.write_mem = sim_syscall_write_mem;
- cb_syscall (cb, &s);
- m32rbf_h_gr_set (current_cpu, 2, s.errcode);
- m32rbf_h_gr_set (current_cpu, 0, s.result);
- m32rbf_h_gr_set (current_cpu, 1, s.result2);
+ long result, result2;
+ int errcode;
+
+ sim_syscall_multi (current_cpu,
+ m32rbf_h_gr_get (current_cpu, 0),
+ m32rbf_h_gr_get (current_cpu, 1),
+ m32rbf_h_gr_get (current_cpu, 2),
+ m32rbf_h_gr_get (current_cpu, 3),
+ m32rbf_h_gr_get (current_cpu, 4),
+ &result, &result2, &errcode);
+
+ m32rbf_h_gr_set (current_cpu, 2, errcode);
+ m32rbf_h_gr_set (current_cpu, 0, result);
+ m32rbf_h_gr_set (current_cpu, 1, result2);
break;
}