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qemu-e2k
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e2k: set default procedure stack size to page size

This commit is contained in:
Denis Drakhnia 2024-01-15 17:10:29 +02:00
parent b3a68870d5
commit 8e133a3e89
4 changed files with 12 additions and 37 deletions
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2
linux-user/e2k/target_syscall.h
View File

@ -18,7 +18,7 @@
/* double-NRs */
#define E2K_DEFAULT_PCS_SIZE (TARGET_PAGE_SIZE)
#define E2K_DEFAULT_PS_SIZE (TARGET_PAGE_SIZE * 4)
#define E2K_DEFAULT_PS_SIZE (TARGET_PAGE_SIZE)
typedef uint64_t e2k_greg_t; // double word

37
target/e2k/helper.c
View File

@ -143,18 +143,6 @@ static void crs_read(CPUE2KState *env, target_ulong addr, E2KCrs *crs)
crs->cr1.hi = cpu_ldq_le_data(env, addr + offsetof(E2KCrs, cr1.hi));
}
static void pcs_push(CPUE2KState *env, E2KCrs *crs)
{
#ifndef CONFIG_USER_ONLY
if ((env->pcsp.index + sizeof(E2KCrs) * 2) > env->pcsp.size) {
raise_exception(env, E2K_EXCP_CHAIN_STACK_BOUNDS);
}
#endif
env->pcsp.index += sizeof(E2KCrs);
crs_write(env, env->pcsp.base + env->pcsp.index, crs);
}
static void pcs_pop(CPUE2KState *env, E2KCrs *crs)
{
crs_read(env, env->pcsp.base + env->pcsp.index, crs);
@ -171,6 +159,10 @@ void e2k_proc_call(CPUE2KState *env, int base, target_ulong ret_ip,
{
E2KCrs crs;
if ((env->pcsp.size - env->pcsp.index) <= (sizeof(E2KCrs) * 2)) {
raise_exception_ra(env, E2K_EXCP_CHAIN_STACK_BOUNDS, GETPC());
}
crs.cr0_lo = env->pregs;
crs.cr0_hi = ret_ip & ~7;
crs.cr1.wbs = base / 2;
@ -182,7 +174,9 @@ void e2k_proc_call(CPUE2KState *env, int base, target_ulong ret_ip,
crs.cr1.br = env_br_get(env);
crs.cr1.ussz = env->usd.size >> 4;
pcs_push(env, &crs);
env->pcsp.index += sizeof(E2KCrs);
crs_write(env, env->pcsp.base + env->pcsp.index, &crs);
callee_window(env, base, env->wd.size, env->wd.fx || force_fx);
env->wd.fx = true;
@ -236,19 +230,6 @@ void HELPER(call)(CPUE2KState *env, uint64_t ctpr_raw, int call_wbs,
}
}
#ifdef CONFIG_USER_ONLY
void HELPER(expand_stacks)(CPUE2KState *env)
{
if ((env->psp.size - env->psp.index) <= (E2K_REG_LEN * E2K_NR_COUNT * 4)) {
raise_exception_ra(env, E2K_EXCP_PROC_STACK_BOUNDS, GETPC());
}
if ((env->pcsp.size - env->pcsp.index) <= (sizeof(E2KCrs) * 2)) {
raise_exception_ra(env, E2K_EXCP_CHAIN_STACK_BOUNDS, GETPC());
}
}
#endif /* CONFIG_USER_ONLY */
uint64_t HELPER(prep_return)(CPUE2KState *env, int ipd)
{
E2KCtpr ret = { 0 };
@ -329,6 +310,10 @@ void HELPER(setwd)(CPUE2KState *env, int size, int nfx, int dbl)
raise_exception(env, E2K_EXCP_ILLEGAL_OPCODE);
}
if ((env->psp.size - env->psp.index) <= (E2K_REG_LEN * E2K_NR_COUNT * 4)) {
raise_exception_ra(env, E2K_EXCP_PROC_STACK_BOUNDS, GETPC());
}
env->wd.size = size;
env->wd.fx = nfx == 0;
env->wdbl = dbl;

3
target/e2k/helper.h
View File

@ -2,9 +2,6 @@
#define vec i128
DEF_HELPER_2(raise_exception, noreturn, env, int)
#ifdef CONFIG_USER_ONLY
DEF_HELPER_1(expand_stacks, void, env)
#endif
DEF_HELPER_4(call, void, env, i64, int, tl)
DEF_HELPER_2(prep_return, i64, env, int)

7
target/e2k/translate.c
View File

@ -7698,13 +7698,6 @@ static void e2k_tr_translate_insn(DisasContextBase *db, CPUState *cs)
default:
{
pc_next = do_decode(ctx, cs);
#ifdef CONFIG_USER_ONLY
if (ctx->cs1.type == CS1_CALL) {
gen_save_cpu_state(ctx);
gen_helper_expand_stacks(tcg_env);
}
#endif /* CONFIG_USER_ONLY */
ctx->loop_mode = (ctx->bundle.hs & (1 << 10)) != 0;
if (validate_bundle(ctx)) {
gen_setwd(ctx);