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https://gitlab.com/ryandwyer/perfect-dark
synced 2026-08-10 18:56:53 -04:00
Decompile bootAllocateStack
This commit is contained in:
Ryan Dwyer
+2
-2
@@ -7,8 +7,8 @@
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#define bool s32
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#define ubool u32
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extern u8 *g_StackStartAddrs[7];
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extern u8 *g_StackEndAddrs[7];
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extern u8 *g_StackLeftAddrs[7];
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extern u8 *g_StackRightAddrs[7];
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extern u8 *g_StackAllocatedPos;
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extern s32 var8005ce74;
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extern f32 g_ViXScalesBySlot[2];
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+42
-135
@@ -34,8 +34,8 @@ u32 var8005ce00 = 0;
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u32 var8005ce04 = 0;
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u32 var8005ce08 = 0;
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u32 var8005ce0c = 0;
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u8 *g_StackStartAddrs[7] = {0};
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u8 *g_StackEndAddrs[7] = {0};
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u8 *g_StackLeftAddrs[7] = {0};
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u8 *g_StackRightAddrs[7] = {0};
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u8 *g_StackAllocatedPos = (u8 *)0x80400000;
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u32 var8005ce4c = 0x00000002;
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u32 var8005ce50 = 0x10000000;
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@@ -146,12 +146,12 @@ glabel bootPhase1
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.L000017f8:
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/* 17f8: 0c00058d */ jal tlbUnmapRange
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/* 17fc: 2405001f */ addiu $a1,$zero,0x1f
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/* 1800: 3c048006 */ lui $a0,%hi(g_StackStartAddrs)
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/* 1804: 3c038006 */ lui $v1,%hi(g_StackEndAddrs)
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/* 1808: 3c028006 */ lui $v0,%hi(g_StackEndAddrs+0x1c)
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/* 180c: 2442ce48 */ addiu $v0,$v0,%lo(g_StackEndAddrs+0x1c)
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/* 1810: 2463ce2c */ addiu $v1,$v1,%lo(g_StackEndAddrs)
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/* 1814: 2484ce10 */ addiu $a0,$a0,%lo(g_StackStartAddrs)
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/* 1800: 3c048006 */ lui $a0,%hi(g_StackLeftAddrs)
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/* 1804: 3c038006 */ lui $v1,%hi(g_StackRightAddrs)
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/* 1808: 3c028006 */ lui $v0,%hi(g_StackRightAddrs+0x1c)
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/* 180c: 2442ce48 */ addiu $v0,$v0,%lo(g_StackRightAddrs+0x1c)
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/* 1810: 2463ce2c */ addiu $v1,$v1,%lo(g_StackRightAddrs)
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/* 1814: 2484ce10 */ addiu $a0,$a0,%lo(g_StackLeftAddrs)
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.L00001818:
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/* 1818: 24630004 */ addiu $v1,$v1,0x4
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/* 181c: 24840004 */ addiu $a0,$a0,0x4
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@@ -379,9 +379,9 @@ void __osSetFpcCsr(u32 arg0);
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// tlbUnmapRange(1, NTLBENTRIES);
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//
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// // Clear the stack allocation pointers
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// for (i = 0; i < ARRAYCOUNT(g_StackStartAddrs); i++) {
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// g_StackStartAddrs[i] = NULL;
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// g_StackEndAddrs[i] = NULL;
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// for (i = 0; i < ARRAYCOUNT(g_StackLeftAddrs); i++) {
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// g_StackLeftAddrs[i] = NULL;
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// g_StackRightAddrs[i] = NULL;
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// }
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//
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// osInitialize();
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@@ -406,47 +406,6 @@ void __osSetFpcCsr(u32 arg0);
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// osStartThread(&g_MainThread);
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//}
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#if VERSION >= VERSION_NTSC_1_0
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GLOBAL_ASM(
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glabel bootAllocateStack
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/* 18ac: 3c098006 */ lui $t1,%hi(g_StackAllocatedPos)
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/* 18b0: 2529ce48 */ addiu $t1,$t1,%lo(g_StackAllocatedPos)
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/* 18b4: 8d230000 */ lw $v1,0x0($t1)
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/* 18b8: 00041080 */ sll $v0,$a0,0x2
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/* 18bc: 3c018006 */ lui $at,%hi(g_StackEndAddrs)
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/* 18c0: 00220821 */ addu $at,$at,$v0
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/* 18c4: ac23ce2c */ sw $v1,%lo(g_StackEndAddrs)($at)
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/* 18c8: 2401fff0 */ addiu $at,$zero,-16
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/* 18cc: 24a5000f */ addiu $a1,$a1,0xf
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/* 18d0: 00a17024 */ and $t6,$a1,$at
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/* 18d4: 3c018006 */ lui $at,%hi(g_StackStartAddrs)
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/* 18d8: 006e7823 */ subu $t7,$v1,$t6
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/* 18dc: ad2f0000 */ sw $t7,0x0($t1)
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/* 18e0: 00220821 */ addu $at,$at,$v0
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/* 18e4: 01c02825 */ or $a1,$t6,$zero
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/* 18e8: ac2fce10 */ sw $t7,%lo(g_StackStartAddrs)($at)
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/* 18ec: 01e01825 */ or $v1,$t7,$zero
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/* 18f0: 19c0000d */ blez $t6,.L00001928
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/* 18f4: 00004025 */ or $t0,$zero,$zero
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/* 18f8: 3083000f */ andi $v1,$a0,0xf
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/* 18fc: 2418000f */ addiu $t8,$zero,0xf
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/* 1900: 0303c823 */ subu $t9,$t8,$v1
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/* 1904: 00195100 */ sll $t2,$t9,0x4
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/* 1908: 01433025 */ or $a2,$t2,$v1
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/* 190c: 01e01025 */ or $v0,$t7,$zero
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.L00001910:
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/* 1910: 25080001 */ addiu $t0,$t0,0x1
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/* 1914: 24420001 */ addiu $v0,$v0,0x1
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/* 1918: 1505fffd */ bne $t0,$a1,.L00001910
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/* 191c: a046ffff */ sb $a2,-0x1($v0)
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/* 1920: 3c038006 */ lui $v1,%hi(g_StackAllocatedPos)
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/* 1924: 8c63ce48 */ lw $v1,%lo(g_StackAllocatedPos)($v1)
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.L00001928:
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/* 1928: 00651021 */ addu $v0,$v1,$a1
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/* 192c: 03e00008 */ jr $ra
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/* 1930: 2442fff8 */ addiu $v0,$v0,-8
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);
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/**
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* Allocate stack space for the given thread ID.
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*
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@@ -462,91 +421,39 @@ glabel bootAllocateStack
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* The stack is initialised with the thread's ID. This makes it easier to
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* identify in memory and detect when a stack overflow has occurred.
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*/
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// Mismatch:
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// i is stored in a3 but should be t0
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// The value written to ptr[i] is stored in t0 but should be a2
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//void *bootAllocateStack(s32 threadid, s32 size)
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//{
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// u8 *ptr8;
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// u32 *ptr32;
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// s32 i;
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// s32 j;
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//
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// g_StackEndAddrs[threadid] = g_StackAllocatedPos;
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// size = (size + 0xf) & 0xfffffff0;
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//
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// g_StackAllocatedPos -= size;
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// g_StackStartAddrs[threadid] = g_StackAllocatedPos;
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//
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// ptr8 = g_StackStartAddrs[threadid];
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//
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// for (i = 0; i < size; i++) {
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// ptr8[i] = ((0xf - (threadid & 0xf)) << 4) | (threadid & 0xf);
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// }
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//
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//#if VERSION < VERSION_NTSC_1_0
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// // Mark the first 8 words specially
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// ptr32 = (u32 *)g_StackStartAddrs[threadid];
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//
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// for (j = 0; j < 8; j++) {
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// *ptr32 = 0xdeadbabe;
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// ptr32++;
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// }
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//#endif
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//
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// return g_StackAllocatedPos + size - 8;
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//}
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#else
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GLOBAL_ASM(
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glabel bootAllocateStack
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/* 18c4: 3c0a8006 */ lui $t2,0x8006
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/* 18c8: 254ae5c8 */ addiu $t2,$t2,-6712
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/* 18cc: 8d430000 */ lw $v1,0x0($t2)
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/* 18d0: 00041080 */ sll $v0,$a0,0x2
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/* 18d4: 3c018006 */ lui $at,0x8006
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/* 18d8: 00220821 */ addu $at,$at,$v0
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/* 18dc: ac23e5ac */ sw $v1,-0x1a54($at)
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/* 18e0: 2401fff0 */ li $at,-16
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/* 18e4: 24a5000f */ addiu $a1,$a1,0xf
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/* 18e8: 3c188006 */ lui $t8,0x8006
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/* 18ec: 00a17024 */ and $t6,$a1,$at
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/* 18f0: 2718e590 */ addiu $t8,$t8,-6768
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/* 18f4: 00583821 */ addu $a3,$v0,$t8
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/* 18f8: 006e7823 */ subu $t7,$v1,$t6
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/* 18fc: 01c02825 */ move $a1,$t6
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/* 1900: ad4f0000 */ sw $t7,0x0($t2)
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/* 1904: acef0000 */ sw $t7,0x0($a3)
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/* 1908: 19c0000b */ blez $t6,.L00001938
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/* 190c: 00004825 */ move $t1,$zero
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/* 1910: 3083000f */ andi $v1,$a0,0xf
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/* 1914: 2419000f */ li $t9,0xf
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/* 1918: 03235823 */ subu $t3,$t9,$v1
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/* 191c: 000b6100 */ sll $t4,$t3,0x4
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/* 1920: 01833025 */ or $a2,$t4,$v1
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/* 1924: 01e01025 */ move $v0,$t7
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.L00001928:
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/* 1928: 25290001 */ addiu $t1,$t1,0x1
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/* 192c: 24420001 */ addiu $v0,$v0,0x1
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/* 1930: 1525fffd */ bne $t1,$a1,.L00001928
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/* 1934: a046ffff */ sb $a2,-0x1($v0)
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.L00001938:
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/* 1938: 3c04dead */ lui $a0,0xdead
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/* 193c: 8ce20000 */ lw $v0,0x0($a3)
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/* 1940: 3484babe */ ori $a0,$a0,0xbabe
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/* 1944: 00001825 */ move $v1,$zero
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/* 1948: 24060008 */ li $a2,0x8
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.L0000194c:
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/* 194c: 24630001 */ addiu $v1,$v1,0x1
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/* 1950: ac440000 */ sw $a0,0x0($v0)
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/* 1954: 1466fffd */ bne $v1,$a2,.L0000194c
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/* 1958: 24420004 */ addiu $v0,$v0,0x4
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/* 195c: 8d4d0000 */ lw $t5,0x0($t2)
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/* 1960: 01a51021 */ addu $v0,$t5,$a1
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/* 1964: 03e00008 */ jr $ra
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/* 1968: 2442fff8 */ addiu $v0,$v0,-8
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);
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void *bootAllocateStack(s32 threadid, s32 size)
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{
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u8 *ptr8;
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u32 *ptr32;
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s32 i;
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s32 j;
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u8 *tmp;
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g_StackRightAddrs[threadid] = g_StackAllocatedPos;
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size = (size + 0xf) & 0xfffffff0;
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g_StackAllocatedPos -= size;
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g_StackLeftAddrs[threadid] = (tmp = g_StackAllocatedPos);
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ptr8 = g_StackAllocatedPos;
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for (i = 0; i < size; i++) {
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ptr8[i] = ((0xf - (threadid & 0xf)) << 4) | (threadid & 0xf);
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}
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#if VERSION < VERSION_NTSC_1_0
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// Mark the first 8 words specially
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ptr32 = (u32 *)g_StackLeftAddrs[threadid];
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for (j = 0; j < 8; j++) {
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*ptr32 = 0xdeadbabe;
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ptr32++;
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}
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#endif
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return g_StackAllocatedPos + size - 8;
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}
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#if VERSION < VERSION_NTSC_1_0
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u8 *bootGetStackPos(void)
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{
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+3
-3
@@ -590,8 +590,8 @@ u32 crashGetStackEnd(u32 sp, s32 tid)
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return 0;
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}
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start = (u32)g_StackStartAddrs[tid];
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end = (u32)g_StackEndAddrs[tid];
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start = (u32)g_StackLeftAddrs[tid];
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end = (u32)g_StackRightAddrs[tid];
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if (sp >= 0x80000000) {
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return end;
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@@ -609,7 +609,7 @@ u32 crashGetStackStart(u32 sp, s32 tid)
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return 0;
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}
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start = (u32)g_StackStartAddrs[tid];
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start = (u32)g_StackLeftAddrs[tid];
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if (sp >= 0x80000000) {
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return start;
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