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target-alpha: Move exception helpers to helper.c.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2012-03-24 09:51:08 -07:00 committed by Blue Swirl
parent 0be034bc2c
commit b9f0923eb7
5 changed files with 63 additions and 56 deletions
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3
target-alpha/cpu.h
View File

@ -434,6 +434,9 @@ int cpu_alpha_handle_mmu_fault (CPUAlphaState *env, uint64_t address, int rw,
int mmu_idx);
#define cpu_handle_mmu_fault cpu_alpha_handle_mmu_fault
void do_interrupt (CPUAlphaState *env);
void do_restore_state(CPUAlphaState *, void *retaddr);
void QEMU_NORETURN dynamic_excp(CPUAlphaState *, void *, int, int);
void QEMU_NORETURN arith_excp(CPUAlphaState *, void *, int, uint64_t);
uint64_t cpu_alpha_load_fpcr (CPUAlphaState *env);
void cpu_alpha_store_fpcr (CPUAlphaState *env, uint64_t val);

39
target-alpha/helper.c
View File

@ -23,6 +23,7 @@
#include "cpu.h"
#include "softfloat.h"
#include "helper.h"
uint64_t cpu_alpha_load_fpcr (CPUAlphaState *env)
{
@ -484,3 +485,41 @@ void cpu_dump_state (CPUAlphaState *env, FILE *f, fprintf_function cpu_fprintf,
}
cpu_fprintf(f, "\n");
}
void do_restore_state(CPUAlphaState *env, void *retaddr)
{
uintptr_t pc = (uintptr_t)retaddr;
if (pc) {
TranslationBlock *tb = tb_find_pc(pc);
if (tb) {
cpu_restore_state(tb, env, pc);
}
}
}
/* This should only be called from translate, via gen_excp.
We expect that ENV->PC has already been updated. */
void QEMU_NORETURN helper_excp(CPUAlphaState *env, int excp, int error)
{
env->exception_index = excp;
env->error_code = error;
cpu_loop_exit(env);
}
/* This may be called from any of the helpers to set up EXCEPTION_INDEX. */
void QEMU_NORETURN dynamic_excp(CPUAlphaState *env, void *retaddr,
int excp, int error)
{
env->exception_index = excp;
env->error_code = error;
do_restore_state(env, retaddr);
cpu_loop_exit(env);
}
void QEMU_NORETURN arith_excp(CPUAlphaState *env, void *retaddr,
int exc, uint64_t mask)
{
env->trap_arg0 = exc;
env->trap_arg1 = mask;
dynamic_excp(env, retaddr, EXCP_ARITH, 0);
}

2
target-alpha/helper.h
View File

@ -1,6 +1,6 @@
#include "def-helper.h"
DEF_HELPER_2(excp, void, int, int)
DEF_HELPER_3(excp, void, env, int, int)
DEF_HELPER_FLAGS_0(load_pcc, TCG_CALL_CONST | TCG_CALL_PURE, i64)
DEF_HELPER_2(addqv, i64, i64, i64)

73
target-alpha/op_helper.c
View File

@ -30,43 +30,6 @@
/*****************************************************************************/
/* Exceptions processing helpers */
/* This should only be called from translate, via gen_excp.
We expect that ENV->PC has already been updated. */
void QEMU_NORETURN helper_excp(int excp, int error)
{
env->exception_index = excp;
env->error_code = error;
cpu_loop_exit(env);
}
static void do_restore_state(void *retaddr)
{
unsigned long pc = (unsigned long)retaddr;
if (pc) {
TranslationBlock *tb = tb_find_pc(pc);
if (tb) {
cpu_restore_state(tb, env, pc);
}
}
}
/* This may be called from any of the helpers to set up EXCEPTION_INDEX. */
static void QEMU_NORETURN dynamic_excp(int excp, int error)
{
env->exception_index = excp;
env->error_code = error;
do_restore_state(GETPC());
cpu_loop_exit(env);
}
static void QEMU_NORETURN arith_excp(int exc, uint64_t mask)
{
env->trap_arg0 = exc;
env->trap_arg1 = mask;
dynamic_excp(EXCP_ARITH, 0);
}
uint64_t helper_load_pcc (void)
{
#ifndef CONFIG_USER_ONLY
@ -97,7 +60,7 @@ uint64_t helper_addqv (uint64_t op1, uint64_t op2)
uint64_t tmp = op1;
op1 += op2;
if (unlikely((tmp ^ op2 ^ (-1ULL)) & (tmp ^ op1) & (1ULL << 63))) {
arith_excp(EXC_M_IOV, 0);
arith_excp(env, GETPC(), EXC_M_IOV, 0);
}
return op1;
}
@ -107,7 +70,7 @@ uint64_t helper_addlv (uint64_t op1, uint64_t op2)
uint64_t tmp = op1;
op1 = (uint32_t)(op1 + op2);
if (unlikely((tmp ^ op2 ^ (-1UL)) & (tmp ^ op1) & (1UL << 31))) {
arith_excp(EXC_M_IOV, 0);
arith_excp(env, GETPC(), EXC_M_IOV, 0);
}
return op1;
}
@ -117,7 +80,7 @@ uint64_t helper_subqv (uint64_t op1, uint64_t op2)
uint64_t res;
res = op1 - op2;
if (unlikely((op1 ^ op2) & (res ^ op1) & (1ULL << 63))) {
arith_excp(EXC_M_IOV, 0);
arith_excp(env, GETPC(), EXC_M_IOV, 0);
}
return res;
}
@ -127,7 +90,7 @@ uint64_t helper_sublv (uint64_t op1, uint64_t op2)
uint32_t res;
res = op1 - op2;
if (unlikely((op1 ^ op2) & (res ^ op1) & (1UL << 31))) {
arith_excp(EXC_M_IOV, 0);
arith_excp(env, GETPC(), EXC_M_IOV, 0);
}
return res;
}
@ -137,7 +100,7 @@ uint64_t helper_mullv (uint64_t op1, uint64_t op2)
int64_t res = (int64_t)op1 * (int64_t)op2;
if (unlikely((int32_t)res != res)) {
arith_excp(EXC_M_IOV, 0);
arith_excp(env, GETPC(), EXC_M_IOV, 0);
}
return (int64_t)((int32_t)res);
}
@ -149,7 +112,7 @@ uint64_t helper_mulqv (uint64_t op1, uint64_t op2)
muls64(&tl, &th, op1, op2);
/* If th != 0 && th != -1, then we had an overflow */
if (unlikely((th + 1) > 1)) {
arith_excp(EXC_M_IOV, 0);
arith_excp(env, GETPC(), EXC_M_IOV, 0);
}
return tl;
}
@ -200,7 +163,7 @@ void helper_fp_exc_raise(uint32_t exc, uint32_t regno)
hw_exc |= EXC_M_INE;
}
arith_excp(hw_exc, 1ull << regno);
arith_excp(env, GETPC(), hw_exc, 1ull << regno);
}
}
@ -230,7 +193,7 @@ uint64_t helper_ieee_input(uint64_t val)
if (env->fpcr_dnz) {
val &= 1ull << 63;
} else {
arith_excp(EXC_M_UNF, 0);
arith_excp(env, GETPC(), EXC_M_UNF, 0);
}
}
} else if (exp == 0x7ff) {
@ -238,7 +201,7 @@ uint64_t helper_ieee_input(uint64_t val)
/* ??? I'm not sure these exception bit flags are correct. I do
know that the Linux kernel, at least, doesn't rely on them and
just emulates the insn to figure out what exception to use. */
arith_excp(frac ? EXC_M_INV : EXC_M_FOV, 0);
arith_excp(env, GETPC(), frac ? EXC_M_INV : EXC_M_FOV, 0);
}
return val;
}
@ -255,12 +218,12 @@ uint64_t helper_ieee_input_cmp(uint64_t val)
if (env->fpcr_dnz) {
val &= 1ull << 63;
} else {
arith_excp(EXC_M_UNF, 0);
arith_excp(env, GETPC(), EXC_M_UNF, 0);
}
}
} else if (exp == 0x7ff && frac) {
/* NaN. */
arith_excp(EXC_M_INV, 0);
arith_excp(env, GETPC(), EXC_M_INV, 0);
}
return val;
}
@ -323,7 +286,7 @@ static inline float32 f_to_float32(uint64_t a)
if (unlikely(!exp && mant_sig)) {
/* Reserved operands / Dirty zero */
dynamic_excp(EXCP_OPCDEC, 0);
dynamic_excp(env, GETPC(), EXCP_OPCDEC, 0);
}
if (exp < 3) {
@ -453,7 +416,7 @@ static inline float64 g_to_float64(uint64_t a)
if (!exp && mant_sig) {
/* Reserved operands / Dirty zero */
dynamic_excp(EXCP_OPCDEC, 0);
dynamic_excp(env, GETPC(), EXCP_OPCDEC, 0);
}
if (exp < 3) {
@ -1085,7 +1048,7 @@ static void QEMU_NORETURN do_unaligned_access(target_ulong addr, int is_write,
uint64_t pc;
uint32_t insn;
do_restore_state(retaddr);
do_restore_state(env, retaddr);
pc = env->pc;
insn = ldl_code(pc);
@ -1093,7 +1056,9 @@ static void QEMU_NORETURN do_unaligned_access(target_ulong addr, int is_write,
env->trap_arg0 = addr;
env->trap_arg1 = insn >> 26; /* opcode */
env->trap_arg2 = (insn >> 21) & 31; /* dest regno */
helper_excp(EXCP_UNALIGN, 0);
env->exception_index = EXCP_UNALIGN;
env->error_code = 0;
cpu_loop_exit(env);
}
void QEMU_NORETURN cpu_unassigned_access(CPUAlphaState *env1,
@ -1103,7 +1068,7 @@ void QEMU_NORETURN cpu_unassigned_access(CPUAlphaState *env1,
env = env1;
env->trap_arg0 = addr;
env->trap_arg1 = is_write;
dynamic_excp(EXCP_MCHK, 0);
dynamic_excp(env1, GETPC(), EXCP_MCHK, 0);
}
#include "softmmu_exec.h"
@ -1137,7 +1102,7 @@ void tlb_fill(CPUAlphaState *env1, target_ulong addr, int is_write, int mmu_idx,
env = env1;
ret = cpu_alpha_handle_mmu_fault(env, addr, is_write, mmu_idx);
if (unlikely(ret != 0)) {
do_restore_state(retaddr);
do_restore_state(env, retaddr);
/* Exception index and error code are already set */
cpu_loop_exit(env);
}

2
target-alpha/translate.c
View File

@ -149,7 +149,7 @@ static void gen_excp_1(int exception, int error_code)
tmp1 = tcg_const_i32(exception);
tmp2 = tcg_const_i32(error_code);
gen_helper_excp(tmp1, tmp2);
gen_helper_excp(cpu_env, tmp1, tmp2);
tcg_temp_free_i32(tmp2);
tcg_temp_free_i32(tmp1);
}