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Further clean up C_SetScriptSize(). This also fixes a bug in the function where when expanding the buffer size, most of the extra space was left uninitialized due to bad parameters passed to memset().

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git-svn-id: https://svn.eduke32.com/eduke32@7235 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
terminx 2018-11-18 18:14:38 +00:00
parent c29ffec9cb
commit 2f9f16de7f
1 changed files with 17 additions and 33 deletions
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50
source/duke3d/src/gamedef.cpp
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@ -830,23 +830,19 @@ hashtable_t h_labels = { 11264>>1, NULL };
// "magic" number for { and }, overrides line number in compiled code for later detection
#define IFELSE_MAGIC 31337
static int32_t g_ifElseAborted;
static bool g_ifElseAborted;
static void C_SetScriptSize(int32_t newsize)
{
intptr_t const oscript = (intptr_t)apScript;
int32_t const osize = g_scriptSize;
for (int i = 0; i < osize - 1; ++i)
for (int i = 0; i < g_scriptSize - 1; ++i)
{
if (BITPTR_IS_POINTER(i))
{
if (EDUKE32_PREDICT_FALSE((intptr_t)apScript[i] < (intptr_t)&apScript[0] || (intptr_t)apScript[i] >= (intptr_t)&apScript[g_scriptSize]))
if (EDUKE32_PREDICT_FALSE(apScript[i] < (intptr_t)apScript || apScript[i] >= (intptr_t)g_scriptPtr))
{
g_errorCnt++;
buildprint("Internal compiler error at ", i, " (0x", hex(i), ")\n");
VM_ScriptInfo(&apScript[i], 16);
BITPTR_CLEAR(i);
}
else
apScript[i] -= (intptr_t)&apScript[0];
@ -857,39 +853,27 @@ static void C_SetScriptSize(int32_t newsize)
G_Util_PtrToIdx2(&g_tile[0].loadPtr, MAXTILES, sizeof(tiledata_t), apScript, P2I_FWD_NON0);
auto newscript = (intptr_t *)Xrealloc(apScript, newsize * sizeof(intptr_t));
auto newbitptr = (char *)Xcalloc(1, (((newsize + 7) >> 3) + 1) * sizeof(uint8_t));
bitptr = (char *)Xrealloc(bitptr, (((newsize + 7) >> 3) + 1) * sizeof(uint8_t));
if (newsize >= osize)
{
Bmemset(&newscript[0] + osize, 0, (newsize - osize) * sizeof(uint8_t));
Bmemcpy(newbitptr, bitptr, sizeof(uint8_t) * ((osize + 7) >> 3));
}
else
Bmemcpy(newbitptr, bitptr, sizeof(uint8_t) * ((newsize + 7) >> 3));
Bfree(bitptr);
bitptr = newbitptr;
if (newsize > g_scriptSize)
Bmemset(&newscript[g_scriptSize], 0, (newsize - g_scriptSize) * sizeof(intptr_t));
if (apScript != newscript)
{
buildprint("Relocating compiled code from to 0x", hex((intptr_t)apScript), " to 0x", hex((intptr_t)newscript), "\n");
apScript = newscript;
buildprint("Relocated compiled code from 0x", hex((intptr_t)apScript), " to 0x", hex((intptr_t)newscript), "\n");
g_scriptPtr = g_scriptPtr - apScript + newscript;
apScript = newscript;
}
int const smallestSize = min(g_scriptSize, newsize);
for (int i = 0; i < smallestSize - 1; ++i)
{
if (BITPTR_IS_POINTER(i))
apScript[i] += (intptr_t)&apScript[0];
}
g_scriptSize = newsize;
g_scriptPtr = apScript + (intptr_t)g_scriptPtr - oscript;
int32_t const size = (newsize >= osize) ? osize : newsize;
for (int i = 0; i < size - 1; ++i)
{
if (BITPTR_IS_POINTER(i))
{
intptr_t const j = (intptr_t)apScript[i] + (intptr_t)&apScript[0];
apScript[i] = j;
}
}
G_Util_PtrToIdx2(&g_tile[0].execPtr, MAXTILES, sizeof(tiledata_t), apScript, P2I_BACK_NON0);
G_Util_PtrToIdx2(&g_tile[0].loadPtr, MAXTILES, sizeof(tiledata_t), apScript, P2I_BACK_NON0);