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[gamecode] Add memset instructions

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This commit is contained in:
Bill Currie 2020-03-11 22:48:55 +09:00
parent d418be31e6
commit 6ca85d770d
3 changed files with 35 additions and 1 deletions
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3
include/QF/pr_comp.h
View file

@ -395,6 +395,9 @@ typedef enum {
OP_MOD_I,
OP_MOD_F,
OP_MOD_D,
OP_MEMSET,
OP_MEMSETI,
} pr_opcode_e;
#define OP_BREAK 0x8000

23
libs/gamecode/pr_exec.c
View file

@ -404,6 +404,14 @@ check_stack_pointer (progs_t *pr, pointer_t stack, int size)
}
}
static inline void
pr_memset (pr_type_t *dst, int val, int count)
{
while (count-- > 0) {
(*dst++).integer_var = val;
}
}
/*
PR_ExecuteProgram
@ -1608,7 +1616,20 @@ op_call:
pr->pr_globals + OPA.integer_var,
st->b * 4);
break;
case OP_MEMSET:
if (pr_boundscheck->int_val) {
PR_BoundsCheckSize (pr, OPC.pointer_var, OPB.uinteger_var);
}
pr_memset (pr->pr_globals + OPC.pointer_var, OPA.integer_var,
OPB.integer_var);
break;
case OP_MEMSETI:
if (pr_boundscheck->int_val) {
PR_BoundsCheckSize (pr, OPC.pointer_var, st->b);
}
pr_memset (pr->pr_globals + OPC.pointer_var, OPA.integer_var,
st->b);
break;
case OP_GE_D:
OPC.float_var = OPA_double_var >= OPB_double_var;
break;

10
libs/gamecode/pr_opcode.c
View file

@ -1183,6 +1183,16 @@ VISIBLE const opcode_t pr_opcodes[] = {
PROG_VERSION,
"%Ga, %Gb, %Gc",
},
{"<MEMSET>", "memset", OP_MEMSET, true,
ev_integer, ev_integer, ev_pointer,
PROG_VERSION,
"%Ga, %Gb, %Gc",
},
{"<MEMSET>", "memseti", OP_MEMSETI, true,
ev_integer, ev_short, ev_pointer,
PROG_VERSION,
"%Ga, %Gb, %Gc",
},
{"<PUSH>", "push.s", OP_PUSH_S, false,
ev_string, ev_invalid, ev_invalid,