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alpha-linux-user: Implement signals.

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Move userland PALcode handling into linux-user main loop so that
we can send signals from there.  This also makes alpha_palcode.c
system-level only, so don't build it for userland.  Add defines
for GENTRAP PALcall mapping to signals.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2009-12-27 18:30:03 -08:00 • committed by Aurelien Jarno
parent f24518b502
commit 6049f4f831
9 changed files with 489 additions and 117 deletions
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81
hw/alpha_palcode.c
View file

@ -21,11 +21,9 @@
#include <stdlib.h>
#include <stdio.h>
#include "qemu.h"
#include "cpu.h"
#include "exec-all.h"
#if !defined (CONFIG_USER_ONLY)
/* Shared handlers */
static void pal_reset (CPUState *env);
/* Console handlers */
@ -997,12 +995,9 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
uint64_t physical, page_size, end;
int prot, zbits, ret;
#if defined(CONFIG_USER_ONLY)
ret = 2;
#else
ret = virtual_to_physical(env, &physical, &zbits, &prot,
address, mmu_idx, rw);
#endif
ret = virtual_to_physical(env, &physical, &zbits, &prot,
address, mmu_idx, rw);
switch (ret) {
case 0:
/* No fault */
@ -1050,73 +1045,3 @@ int cpu_ppc_handle_mmu_fault (CPUState *env, uint32_t address, int rw,
return ret;
}
#endif
#else /* !defined (CONFIG_USER_ONLY) */
void pal_init (CPUState *env)
{
}
void call_pal (CPUState *env, int palcode)
{
target_long ret;
switch (palcode) {
case 0x80:
/* BPT */
qemu_log("BPT\n");
/* FIXME: Sends SIGTRAP, si_code=TRAP_BRKPT. */
exit(1);
case 0x81:
/* BUGCHK */
qemu_log("BUGCHK\n");
/* FIXME: Sends SIGTRAP, si_code=SI_FAULT. */
exit(1);
case 0x83:
/* CALLSYS */
qemu_log("CALLSYS n " TARGET_FMT_ld "\n", env->ir[0]);
ret = do_syscall(env, env->ir[IR_V0], env->ir[IR_A0], env->ir[IR_A1],
env->ir[IR_A2], env->ir[IR_A3], env->ir[IR_A4],
env->ir[IR_A5]);
if (ret >= 0) {
env->ir[IR_A3] = 0;
env->ir[IR_V0] = ret;
} else {
env->ir[IR_A3] = 1;
env->ir[IR_V0] = -ret;
}
break;
case 0x86:
/* IMB */
qemu_log("IMB\n");
/* ??? We can probably elide the code using page_unprotect that is
checking for self-modifying code. Instead we could simply call
tb_flush here. Until we work out the changes required to turn
off the extra write protection, this can be a no-op. */
break;
case 0x9E:
/* RDUNIQUE */
qemu_log("RDUNIQUE: " TARGET_FMT_lx "\n", env->unique);
/* Handled in the translator for usermode. */
abort();
case 0x9F:
/* WRUNIQUE */
qemu_log("WRUNIQUE: " TARGET_FMT_lx "\n", env->ir[IR_A0]);
/* Handled in the translator for usermode. */
abort();
case 0xAA:
/* GENTRAP */
qemu_log("GENTRAP: " TARGET_FMT_lx "\n", env->ir[IR_A0]);
/* FIXME: This is supposed to send a signal:
SIGFPE:
GEN_INTOVF, GEN_INTDIV, GEN_FLTOVF, GEN_FLTDIV,
GEN_FLTUND, GEN_FLTINV, GEN_FLTINE, GEN_ROPRAND
SIGTRAP:
others
with various settings of si_code. */
exit(1);
default:
qemu_log("%s: unhandled palcode %02x\n", __func__, palcode);
exit(1);
}
}
#endif