OpenE2K/qemu-e2k
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target: e2k: Move int helpers to separate file.

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This commit is contained in:
Denis Drakhnia 2020-11-27 08:32:52 +02:00 committed by Denis Drakhnia
parent f37d246c90
commit 0b4a9728dc
2 changed files with 92 additions and 83 deletions
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83
target/e2k/helper.c
View File

@ -273,28 +273,6 @@ void helper_break_restore_state(CPUE2KState *env)
env->is_bp = false;
}
uint64_t helper_sxt(uint64_t x, uint64_t y)
{
int size;
switch (x & 3) {
case 0:
size = 8;
break;
case 1:
size = 16;
break;
default:
size = 32;
break;
}
if (x & 4) {
return y & GEN_MASK(0, size);
} else {
return (((int64_t) y) << (64 - size) >> (64 - size));
}
}
void helper_debug_i32(uint32_t x)
{
@ -306,67 +284,6 @@ void helper_debug_i64(uint64_t x)
qemu_log_mask(LOG_UNIMP, "log %#lx\n", x);
}
uint64_t helper_state_reg_get(CPUE2KState *env, int reg)
{
switch (reg) {
case 0x2c: /* %usd.hi */
return env->usd_hi;
case 0x2d: /* %usd.lo */
return env->usd_lo;
case 0x80: /* %upsr */
return env->upsr;
case 0x81: /* %ip */
return env->ip;
case 0x83: /* %lsr */
return env->lsr;
case 0x8a: /* %idr */
return env->idr;
case 0x90: /* %clkr */
return cpu_get_host_ticks();
default:
/* TODO: exception */
qemu_log_mask(LOG_UNIMP, "unknown register 0x%x\n", reg);
abort();
return 0; /* unreachable */
}
}
void helper_state_reg_set(CPUE2KState *env, int reg, uint64_t val)
{
switch (reg) {
case 0x2c: /* %usd.hi */
/* FIXME: user cannot write */
env->usd_hi = val;
break;
case 0x2d: /* %usd.lo */
/* FIXME: user cannot write */
env->usd_lo = val;
break;
case 0x80: /* %upsr */
env->upsr = val;
break;
case 0x83: /* %lsr */
env->lsr = val;
break;
default:
qemu_log_mask(LOG_UNIMP, "unknown register 0x%x\n", reg);
helper_raise_exception(env, E2K_EXCP_ILLOPC);
break;
}
}
uint64_t helper_getsp(CPUE2KState *env, uint64_t src2) {
uint64_t base = GET_FIELD(env->usd_lo, USD_LO_BASE_OFF, USD_LO_BASE_LEN);
base += src2;
/* TODO: stack overflow */
env->usd_lo = SET_FIELD(env->usd_lo, base, USD_LO_BASE_OFF,
USD_LO_BASE_LEN);
return base;
}
void helper_setwd(CPUE2KState *env, uint32_t lts)
{
env->wd.size = extract32(lts, 5, 7) * 2;

92
target/e2k/helper_int.c
View File

@ -0,0 +1,92 @@
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "qemu/timer.h"
#include "cpu.h"
#include "exec/exec-all.h"
#include "qemu/host-utils.h"
#include "exec/helper-proto.h"
#include "translate.h"
uint64_t helper_sxt(uint64_t x, uint64_t y)
{
int size;
switch (x & 3) {
case 0:
size = 8;
break;
case 1:
size = 16;
break;
default:
size = 32;
break;
}
if (x & 4) {
return y & GEN_MASK(0, size);
} else {
return (((int64_t) y) << (64 - size) >> (64 - size));
}
}
uint64_t helper_state_reg_get(CPUE2KState *env, int reg)
{
switch (reg) {
case 0x2c: /* %usd.hi */
return env->usd_hi;
case 0x2d: /* %usd.lo */
return env->usd_lo;
case 0x80: /* %upsr */
return env->upsr;
case 0x81: /* %ip */
return env->ip;
case 0x83: /* %lsr */
return env->lsr;
case 0x8a: /* %idr */
return env->idr;
case 0x90: /* %clkr */
return cpu_get_host_ticks();
default:
/* TODO: exception */
qemu_log_mask(LOG_UNIMP, "unknown register 0x%x\n", reg);
abort();
return 0; /* unreachable */
}
}
void helper_state_reg_set(CPUE2KState *env, int reg, uint64_t val)
{
switch (reg) {
case 0x2c: /* %usd.hi */
/* FIXME: user cannot write */
env->usd_hi = val;
break;
case 0x2d: /* %usd.lo */
/* FIXME: user cannot write */
env->usd_lo = val;
break;
case 0x80: /* %upsr */
env->upsr = val;
break;
case 0x83: /* %lsr */
env->lsr = val;
break;
default:
qemu_log_mask(LOG_UNIMP, "unknown register 0x%x\n", reg);
abort();
break;
}
}
uint64_t helper_getsp(CPUE2KState *env, uint64_t src2) {
uint64_t base = GET_FIELD(env->usd_lo, USD_LO_BASE_OFF, USD_LO_BASE_LEN);
base += src2;
/* TODO: stack overflow */
env->usd_lo = SET_FIELD(env->usd_lo, base, USD_LO_BASE_OFF,
USD_LO_BASE_LEN);
return base;
}