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enhanced try_exit and try_exit2 to restore the class stack pointer

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hyung-hwan 2021-12-24 14:59:16 +00:00
parent c230355e90
commit d2e6f94b33
1 changed files with 48 additions and 22 deletions
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64
lib/exec.c
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@ -140,7 +140,7 @@ static void terminate_all_processes (hcl_t* hcl);
/* ------------------------------------------------------------------------- */
#define HCL_EXSTACK_PUSH(hcl, ctx, ip) \
#define HCL_EXSTACK_PUSH(hcl, ctx, ip, clsp_) \
do { \
hcl_oop_process_t ap = (hcl)->processor->active; \
hcl_ooi_t exsp = HCL_OOP_TO_SMOOI(ap->exsp); \
@ -151,6 +151,7 @@ static void terminate_all_processes (hcl_t* hcl);
} \
exsp++; ap->slot[exsp] = (ctx); \
exsp++; ap->slot[exsp] = HCL_SMOOI_TO_OOP(ip); \
exsp++; ap->slot[exsp] = HCL_SMOOI_TO_OOP(clsp_); \
ap->exsp = HCL_SMOOI_TO_OOP(exsp); \
} while (0)
@ -158,14 +159,15 @@ static void terminate_all_processes (hcl_t* hcl);
do { \
hcl_oop_process_t ap = (hcl)->processor->active; \
hcl_ooi_t exsp = HCL_OOP_TO_SMOOI(ap->exsp); \
exsp -= 2; \
exsp -= 3; \
ap->exsp = HCL_SMOOI_TO_OOP(exsp); \
} while (0)
#define HCL_EXSTACK_POP_TO(hcl, ctx, ip) \
#define HCL_EXSTACK_POP_TO(hcl, ctx, ip, clsp) \
do { \
hcl_oop_process_t ap = (hcl)->processor->active; \
hcl_ooi_t exsp = HCL_OOP_TO_SMOOI(ap->exsp); \
clsp = HCL_OOP_TO_SMOOI(ap->slot[exsp]); exsp--; \
ip = HCL_OOP_TO_SMOOI(ap->slot[exsp]); exsp--; \
ctx = ap->slot[exsp]; exsp--; \
ap->exsp = HCL_SMOOI_TO_OOP(exsp); \
@ -179,32 +181,40 @@ static void terminate_all_processes (hcl_t* hcl);
#define HCL_CLSTACK_PUSH(hcl, v) \
do { \
hcl_oop_process_t ap = (hcl)->processor->active; \
hcl_ooi_t clsp = HCL_OOP_TO_SMOOI(ap->clsp); \
if (clsp >= HCL_OOP_TO_SMOOI(ap->clst)) \
hcl_ooi_t clsp_ = HCL_OOP_TO_SMOOI(ap->clsp); \
if (clsp_ >= HCL_OOP_TO_SMOOI(ap->clst)) \
{ \
hcl_seterrbfmt (hcl, HCL_EOOMEM, "process class stack overflow"); \
(hcl)->abort_req = -1; \
} \
clsp++; ap->slot[clsp] = (v); \
ap->clsp = HCL_SMOOI_TO_OOP(clsp); \
clsp_++; ap->slot[clsp_] = (v); \
ap->clsp = HCL_SMOOI_TO_OOP(clsp_); \
} while (0)
#define HCL_CLSTACK_POP(hcl) \
do { \
hcl_oop_process_t ap = (hcl)->processor->active; \
hcl_ooi_t clsp = HCL_OOP_TO_SMOOI(ap->clsp); \
clsp--; \
ap->clsp = HCL_SMOOI_TO_OOP(clsp); \
hcl_ooi_t clsp_ = HCL_OOP_TO_SMOOI(ap->clsp); \
clsp_--; \
ap->clsp = HCL_SMOOI_TO_OOP(clsp_); \
} while (0)
#define HCL_CLSTACK_POP_TO(hcl, v) \
do { \
hcl_oop_process_t ap = (hcl)->processor->active; \
hcl_ooi_t clsp = HCL_OOP_TO_SMOOI(ap->clsp); \
v = ap->slot[clsp]; clsp--; \
hcl_ooi_t clsp_ = HCL_OOP_TO_SMOOI(ap->clsp); \
v = ap->slot[clsp_]; clsp_--; \
ap->clsp = HCL_SMOOI_TO_OOP(clsp_); \
} while (0)
#define HCL_CLSTACK_CHOP(hcl, clsp) \
do { \
hcl_oop_process_t ap = (hcl)->processor->active; \
ap->clsp = HCL_SMOOI_TO_OOP(clsp); \
} while (0)
#define HCL_CLSTACK_GET_SP(hcl) HCL_OOP_TO_SMOOI(((hcl)->processor->active)->clsp)
#define HCL_CLSTACK_ISEMPTY(hcl) (HCL_OOP_TO_SMOOI(((hcl)->processor->active)->clsp) <= HCL_OOP_TO_SMOOI(((hcl)->processor->active)->exst))
/* ------------------------------------------------------------------------- */
@ -2071,7 +2081,7 @@ static HCL_INLINE int call_primitive (hcl_t* hcl, hcl_ooi_t nargs)
static HCL_INLINE int do_throw (hcl_t* hcl, hcl_oop_t val, hcl_ooi_t ip)
{
hcl_oop_context_t catch_ctx;
hcl_ooi_t catch_ip;
hcl_ooi_t catch_ip, Xclsp;
if (HCL_EXSTACK_ISEMPTY(hcl))
{
@ -2098,9 +2108,9 @@ static HCL_INLINE int do_throw (hcl_t* hcl, hcl_oop_t val, hcl_ooi_t ip)
return -1;
}
/* TODO: unwind the nested class stack */
/* must rewind context */
HCL_EXSTACK_POP_TO(hcl, catch_ctx, catch_ip);
HCL_EXSTACK_POP_TO(hcl, catch_ctx, catch_ip, Xclsp);
/* the below code is similar to do_return_from_block() */
hcl->ip = -1; /* mark context dead. saved into hcl->active_context->ip in SWITCH_ACTIVE_CONTEXT */
@ -2761,6 +2771,19 @@ static HCL_INLINE void do_return_from_block (hcl_t* hcl)
}
else
{
/*
TODO: should i restore the class stack pointer too???
let context remeber the it and use it to restore
(defclass X
; ....
(return 20) ; the class defintion isn't over, but return is executed?? or simply disallow return in the class context outside a method?
; ....
)
* /
/* it is a normal block return as the active block context
* is not the initial context of a process */
hcl->ip = -1; /* mark context dead. saved into hcl->active_context->ip in SWITCH_ACTIVE_CONTEXT */
@ -3276,25 +3299,28 @@ if (do_throw(hcl, hcl->_nil, fetched_instruction_pointer) <= -1)
/* -------------------------------------------------------- */
case HCL_CODE_TRY_ENTER:
{
hcl_ooi_t catch_ip;
hcl_ooi_t catch_ip, clsp;
FETCH_PARAM_CODE_TO (hcl, b1);
LOG_INST_1 (hcl, "try_enter %zu", b1);
catch_ip = hcl->ip + b1;
/* TODO: ip overflow check? */
HCL_EXSTACK_PUSH (hcl, hcl->active_context, catch_ip);
clsp = HCL_CLSTACK_GET_SP(hcl);
HCL_EXSTACK_PUSH (hcl, hcl->active_context, catch_ip, clsp);
break;
}
case HCL_CODE_TRY_ENTER2:
{
hcl_oow_t catch_ip;
hcl_ooi_t catch_ip, clsp;
FETCH_PARAM_CODE_TO (hcl, b1);
LOG_INST_1 (hcl, "try_enter2 %zu", b1);
catch_ip = hcl->ip + MAX_CODE_JUMP + b1;
/* TODO: ip overflow check? */
HCL_EXSTACK_PUSH (hcl, hcl->active_context, catch_ip);
clsp = HCL_CLSTACK_GET_SP(hcl);
HCL_EXSTACK_PUSH (hcl, hcl->active_context, catch_ip, clsp);
break;
}