Decompile memaAlloc
This commit is contained in:
Ryan Dwyer
parent
97dde15464
commit
2ef95d741a
165
src/lib/mema.c
165
src/lib/mema.c
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@ -394,122 +394,6 @@ void memaPrint(void)
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#endif
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}
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#if MATCHING && VERSION >= VERSION_NTSC_1_0
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GLOBAL_ASM(
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glabel memaAlloc
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/* 12ab0: 27bdffd0 */ addiu $sp,$sp,-48
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/* 12ab4: afb2001c */ sw $s2,0x1c($sp)
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/* 12ab8: afb10018 */ sw $s1,0x18($sp)
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/* 12abc: 00809025 */ or $s2,$a0,$zero
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/* 12ac0: afb50028 */ sw $s5,0x28($sp)
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/* 12ac4: afb00014 */ sw $s0,0x14($sp)
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/* 12ac8: 3c11800a */ lui $s1,%hi(g_MemaHeap+0xc)
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/* 12acc: 3c078009 */ lui $a3,%hi(g_Is4Mb)
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/* 12ad0: afbf002c */ sw $ra,0x2c($sp)
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/* 12ad4: afb40024 */ sw $s4,0x24($sp)
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/* 12ad8: afb30020 */ sw $s3,0x20($sp)
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/* 12adc: 26319484 */ addiu $s1,$s1,%lo(g_MemaHeap+0xc)
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/* 12ae0: 2404ffff */ addiu $a0,$zero,-1
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/* 12ae4: 00004025 */ or $t0,$zero,$zero
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/* 12ae8: 24e70af0 */ addiu $a3,$a3,%lo(g_Is4Mb)
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/* 12aec: 00008025 */ or $s0,$zero,$zero
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/* 12af0: 2415ffff */ addiu $s5,$zero,-1
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/* 12af4: 24060001 */ addiu $a2,$zero,0x1
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/* 12af8: 24050010 */ addiu $a1,$zero,0x10
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.L00012afc:
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/* 12afc: 8e230004 */ lw $v1,0x4($s1)
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/* 12b00: 26100001 */ addiu $s0,$s0,0x1
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/* 12b04: 0072082b */ sltu $at,$v1,$s2
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/* 12b08: 14200011 */ bnez $at,.L00012b50
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/* 12b0c: 00721023 */ subu $v0,$v1,$s2
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/* 12b10: 8e2e0000 */ lw $t6,0x0($s1)
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/* 12b14: 0044082b */ sltu $at,$v0,$a0
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/* 12b18: 12ae000f */ beq $s5,$t6,.L00012b58
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/* 12b1c: 00000000 */ nop
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/* 12b20: 1020000b */ beqz $at,.L00012b50
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/* 12b24: 2c410040 */ sltiu $at,$v0,0x40
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/* 12b28: 00402025 */ or $a0,$v0,$zero
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/* 12b2c: 1420000a */ bnez $at,.L00012b58
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/* 12b30: 02204025 */ or $t0,$s1,$zero
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/* 12b34: 90ef0000 */ lbu $t7,0x0($a3)
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/* 12b38: 0012c082 */ srl $t8,$s2,0x2
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/* 12b3c: 0058082b */ sltu $at,$v0,$t8
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/* 12b40: 10cf0003 */ beq $a2,$t7,.L00012b50
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/* 12b44: 00000000 */ nop
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/* 12b48: 14200003 */ bnez $at,.L00012b58
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/* 12b4c: 00000000 */ nop
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.L00012b50:
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/* 12b50: 1605ffea */ bne $s0,$a1,.L00012afc
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/* 12b54: 26310008 */ addiu $s1,$s1,0x8
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.L00012b58:
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/* 12b58: 55000027 */ bnezl $t0,.L00012bf8
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/* 12b5c: 8d030000 */ lw $v1,0x0($t0)
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/* 12b60: 8e390004 */ lw $t9,0x4($s1)
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/* 12b64: 00008025 */ or $s0,$zero,$zero
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/* 12b68: 24140008 */ addiu $s4,$zero,0x8
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/* 12b6c: 0332082b */ sltu $at,$t9,$s2
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/* 12b70: 10200006 */ beqz $at,.L00012b8c
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/* 12b74: 3c13800a */ lui $s3,%hi(g_MemaHeap)
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/* 12b78: 8e29000c */ lw $t1,0xc($s1)
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.L00012b7c:
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/* 12b7c: 26310008 */ addiu $s1,$s1,0x8
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/* 12b80: 0132082b */ sltu $at,$t1,$s2
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/* 12b84: 5420fffd */ bnezl $at,.L00012b7c
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/* 12b88: 8e29000c */ lw $t1,0xc($s1)
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.L00012b8c:
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/* 12b8c: 8e2a0000 */ lw $t2,0x0($s1)
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/* 12b90: 26739478 */ addiu $s3,$s3,%lo(g_MemaHeap)
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/* 12b94: 56aa0017 */ bnel $s5,$t2,.L00012bf4
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/* 12b98: 02204025 */ or $t0,$s1,$zero
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/* 12b9c: 3c11800a */ lui $s1,%hi(g_MemaHeap+0xc)
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/* 12ba0: 26319484 */ addiu $s1,$s1,%lo(g_MemaHeap+0xc)
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.L00012ba4:
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/* 12ba4: 0c0049bc */ jal memaDefragPass
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/* 12ba8: 02602025 */ or $a0,$s3,$zero
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/* 12bac: 26100001 */ addiu $s0,$s0,0x1
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/* 12bb0: 1614fffc */ bne $s0,$s4,.L00012ba4
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/* 12bb4: 00000000 */ nop
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/* 12bb8: 8e6b0010 */ lw $t3,0x10($s3)
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/* 12bbc: 0172082b */ sltu $at,$t3,$s2
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/* 12bc0: 50200007 */ beqzl $at,.L00012be0
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/* 12bc4: 8e2d0000 */ lw $t5,0x0($s1)
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/* 12bc8: 8e2c000c */ lw $t4,0xc($s1)
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.L00012bcc:
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/* 12bcc: 26310008 */ addiu $s1,$s1,0x8
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/* 12bd0: 0192082b */ sltu $at,$t4,$s2
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/* 12bd4: 5420fffd */ bnezl $at,.L00012bcc
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/* 12bd8: 8e2c000c */ lw $t4,0xc($s1)
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/* 12bdc: 8e2d0000 */ lw $t5,0x0($s1)
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.L00012be0:
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/* 12be0: 56ad0004 */ bnel $s5,$t5,.L00012bf4
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/* 12be4: 02204025 */ or $t0,$s1,$zero
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/* 12be8: 1000000b */ b .L00012c18
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/* 12bec: 00001025 */ or $v0,$zero,$zero
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/* 12bf0: 02204025 */ or $t0,$s1,$zero
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.L00012bf4:
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/* 12bf4: 8d030000 */ lw $v1,0x0($t0)
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.L00012bf8:
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/* 12bf8: 8d0f0004 */ lw $t7,0x4($t0)
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/* 12bfc: 00727021 */ addu $t6,$v1,$s2
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/* 12c00: 01f2c023 */ subu $t8,$t7,$s2
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/* 12c04: ad0e0000 */ sw $t6,0x0($t0)
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/* 12c08: 17000002 */ bnez $t8,.L00012c14
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/* 12c0c: ad180004 */ sw $t8,0x4($t0)
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/* 12c10: ad000000 */ sw $zero,0x0($t0)
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.L00012c14:
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/* 12c14: 00601025 */ or $v0,$v1,$zero
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.L00012c18:
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/* 12c18: 8fbf002c */ lw $ra,0x2c($sp)
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/* 12c1c: 8fb00014 */ lw $s0,0x14($sp)
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/* 12c20: 8fb10018 */ lw $s1,0x18($sp)
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/* 12c24: 8fb2001c */ lw $s2,0x1c($sp)
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/* 12c28: 8fb30020 */ lw $s3,0x20($sp)
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/* 12c2c: 8fb40024 */ lw $s4,0x24($sp)
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/* 12c30: 8fb50028 */ lw $s5,0x28($sp)
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/* 12c34: 03e00008 */ jr $ra
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/* 12c38: 27bd0030 */ addiu $sp,$sp,0x30
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);
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#else
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void *memaAlloc(u32 size)
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{
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u32 addr;
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@ -528,32 +412,32 @@ void *memaAlloc(u32 size)
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// Iterate up to the first 16 spaces, looking for the
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// smallest space that will accommodate the requested size.
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for (i = 0; i < 16; i++) {
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if (curr->size >= size) {
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if (curr->addr == 0xffffffff) {
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// Reached the end
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break;
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}
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diff = curr->size - size;
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if (diff < bestdiff) {
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bestdiff = diff;
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best = curr;
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// Stop looking if the space is small enough
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#if VERSION >= VERSION_NTSC_1_0
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if (diff < 64 || (IS8MB() && diff < size / 4))
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#else
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if (diff < 64 || diff < size / 4)
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#endif
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{
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break;
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}
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}
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for (i = 0; i < 16; i++, curr++) {
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if (curr->size < size) {
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continue;
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}
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curr++;
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if (curr->addr == 0xffffffff) {
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// Reached the end
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break;
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}
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diff = curr->size - size;
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if (diff < bestdiff) {
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bestdiff = diff;
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best = curr;
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// Stop looking if the space is small enough
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#if VERSION >= VERSION_NTSC_1_0
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if (diff < 64 || (IS8MB() && diff < size / 4))
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#else
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if (diff < 64 || diff < size / 4)
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#endif
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{
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break;
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}
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}
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}
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if (best == NULL) {
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@ -595,7 +479,6 @@ void *memaAlloc(u32 size)
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return (void *)addr;
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}
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#endif
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/**
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* Grow the allocation which currently *ends at* the given address.
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