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https://github.com/Ninjdai1/pokeemerald.git
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DoHandshake
This commit is contained in:
PikalaxALT
parent
3bb450645b
commit
50501396b2
218
asm/link.s
218
asm/link.s
@ -5,208 +5,8 @@
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.text
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thumb_func_start Timer3Intr
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Timer3Intr: @ 800BA28
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push {lr}
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bl StopTimer
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bl StartTransfer
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pop {r0}
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bx r0
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thumb_func_end Timer3Intr
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thumb_func_start SerialCB
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SerialCB: @ 800BA38
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push {r4,lr}
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ldr r4, =gLink
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ldr r0, =0x04000128
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ldr r1, [r0]
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lsls r0, r1, 26
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lsrs r0, 30
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strb r0, [r4, 0x2]
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ldrb r0, [r4, 0x1]
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cmp r0, 0x2
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beq _0800BA6C
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cmp r0, 0x4
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bne _0800BA8A
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lsls r0, r1, 25
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lsrs r0, 31
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strb r0, [r4, 0x10]
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bl sub_800BBCC
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bl sub_800BCE4
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bl sub_800BDCC
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b _0800BA8A
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.pool
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_0800BA6C:
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bl sub_800BAD0
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lsls r0, 24
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cmp r0, 0
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beq _0800BA8A
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ldrb r0, [r4]
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cmp r0, 0
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beq _0800BA86
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movs r0, 0x3
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strb r0, [r4, 0x1]
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movs r0, 0x8
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strb r0, [r4, 0xD]
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b _0800BA8A
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_0800BA86:
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movs r0, 0x4
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strb r0, [r4, 0x1]
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_0800BA8A:
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ldr r3, =gLink
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ldrb r0, [r3, 0xD]
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adds r0, 0x1
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movs r2, 0
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strb r0, [r3, 0xD]
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ldr r1, =sNumVBlanksWithoutSerialIntr
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strb r2, [r1]
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lsls r0, 24
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asrs r0, 24
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cmp r0, 0x8
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bne _0800BAAA
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ldr r0, =gLastRecvQueueCount
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ldr r2, =0x00000fbd
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adds r1, r3, r2
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ldrb r1, [r1]
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strb r1, [r0]
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_0800BAAA:
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pop {r4}
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pop {r0}
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bx r0
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.pool
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thumb_func_end SerialCB
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thumb_func_start StartTransfer
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StartTransfer: @ 800BAC0
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ldr r0, =0x04000128
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ldrh r1, [r0]
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movs r2, 0x80
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orrs r1, r2
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strh r1, [r0]
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bx lr
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.pool
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thumb_func_end StartTransfer
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thumb_func_start sub_800BAD0
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sub_800BAD0: @ 800BAD0
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push {r4-r7,lr}
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mov r7, r9
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mov r6, r8
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push {r6,r7}
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movs r5, 0
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ldr r6, =0x0000ffff
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ldr r0, =gLink
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ldrb r1, [r0, 0xE]
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adds r7, r0, 0
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cmp r1, 0x1
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bne _0800BAFC
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ldr r1, =0x0400012a
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ldr r2, =0x00008fff
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b _0800BB00
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.pool
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_0800BAFC:
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ldr r1, =0x0400012a
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ldr r2, =0x0000b9a0
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_0800BB00:
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adds r0, r2, 0
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strh r0, [r1]
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ldr r2, =gLink+0x4
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ldr r3, =0x04000120
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ldr r0, [r3]
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ldr r1, [r3, 0x4]
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str r0, [r2]
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str r1, [r2, 0x4]
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movs r0, 0
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movs r1, 0
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str r0, [r3]
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str r1, [r3, 0x4]
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strb r0, [r2, 0xA]
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movs r4, 0
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ldr r0, =gUnknown_03000D73
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mov r9, r0
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mov r8, r2
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ldr r2, =0x00008fff
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ldr r1, =0x0000ffff
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mov r12, r1
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_0800BB28:
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lsls r0, r4, 1
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add r0, r8
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ldrh r3, [r0]
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movs r0, 0x4
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negs r0, r0
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ands r0, r3
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ldr r1, =0x0000b9a0
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cmp r0, r1
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beq _0800BB40
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adds r0, r3, 0
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cmp r0, r2
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bne _0800BB70
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_0800BB40:
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adds r0, r5, 0x1
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lsls r0, 24
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lsrs r5, r0, 24
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adds r0, r3, 0
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cmp r6, r0
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bls _0800BB78
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cmp r0, 0
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beq _0800BB78
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adds r6, r3, 0
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b _0800BB78
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.pool
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_0800BB70:
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cmp r0, r12
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beq _0800BB82
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movs r5, 0
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b _0800BB82
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_0800BB78:
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adds r0, r4, 0x1
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lsls r0, 24
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lsrs r4, r0, 24
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cmp r4, 0x3
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bls _0800BB28
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_0800BB82:
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strb r5, [r7, 0x3]
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adds r0, r5, 0
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cmp r0, 0x1
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bls _0800BBB2
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mov r2, r9
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ldrb r2, [r2]
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cmp r0, r2
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bne _0800BBA4
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ldrh r1, [r7, 0x4]
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ldr r0, =0x00008fff
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cmp r1, r0
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bne _0800BBA4
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movs r0, 0x1
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b _0800BBBE
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.pool
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_0800BBA4:
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ldrb r0, [r7, 0x3]
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cmp r0, 0x1
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bls _0800BBB2
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movs r0, 0x3
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ands r6, r0
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adds r0, r6, 0x1
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b _0800BBB4
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_0800BBB2:
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movs r0, 0
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_0800BBB4:
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strb r0, [r7, 0xF]
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ldrb r0, [r7, 0x3]
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mov r1, r9
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strb r0, [r1]
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movs r0, 0
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_0800BBBE:
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pop {r3,r4}
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mov r8, r3
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mov r9, r4
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pop {r4-r7}
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pop {r1}
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bx r1
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thumb_func_end sub_800BAD0
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thumb_func_start sub_800BBCC
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sub_800BBCC: @ 800BBCC
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thumb_func_start DoRecv
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DoRecv: @ 800BBCC
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push {r4-r7,lr}
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mov r7, r8
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push {r7}
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@ -345,10 +145,10 @@ _0800BCD0:
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pop {r0}
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bx r0
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.pool
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thumb_func_end sub_800BBCC
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thumb_func_end DoRecv
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thumb_func_start sub_800BCE4
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sub_800BCE4: @ 800BCE4
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thumb_func_start DoSend
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DoSend: @ 800BCE4
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push {r4,lr}
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ldr r0, =gLink
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ldrb r1, [r0, 0x16]
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@ -431,7 +231,7 @@ _0800BD8C:
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pop {r0}
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bx r0
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.pool
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thumb_func_end sub_800BCE4
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thumb_func_end DoSend
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thumb_func_start StopTimer
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StopTimer: @ 800BD98
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@ -455,8 +255,8 @@ _0800BDB4:
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.pool
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thumb_func_end StopTimer
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thumb_func_start sub_800BDCC
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sub_800BDCC: @ 800BDCC
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thumb_func_start SendRecvDone
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SendRecvDone: @ 800BDCC
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push {lr}
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ldr r1, =gLink
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ldrb r0, [r1, 0x17]
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@ -480,7 +280,7 @@ _0800BDF4:
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pop {r0}
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bx r0
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.pool
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thumb_func_end sub_800BDCC
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thumb_func_end SendRecvDone
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thumb_func_start sub_800BDFC
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sub_800BDFC: @ 800BDFC
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@ -78,7 +78,7 @@ struct LinkStatus
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#define MASTER_HANDSHAKE 0x8FFF
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#define SLAVE_HANDSHAKE 0xB9A0
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#define SIO_MULTI_CNT ((volatile struct SioMultiCnt *)REG_ADDR_SIOCNT)
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#define SIO_MULTI_CNT ((struct SioMultiCnt *)REG_ADDR_SIOCNT)
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enum
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{
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110
src/link.c
110
src/link.c
@ -65,7 +65,7 @@ IWRAM_DATA bool8 gUnknown_03000D6D;
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IWRAM_DATA u16 sSendNonzeroCheck;
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IWRAM_DATA u16 gUnknown_03000D70;
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IWRAM_DATA u8 gUnknown_03000D72;
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IWRAM_DATA u8 gUnknown_03000D73;
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IWRAM_DATA u8 sHandshakePlayerCount;
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IWRAM_DATA u8 gUnknown_03000D74;
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u16 gLinkPartnersHeldKeys[6];
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@ -159,7 +159,12 @@ static void CheckMasterOrSlave(void);
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static void InitTimer(void);
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static void EnqueueSendCmd(u16 *sendCmd);
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static void DequeueRecvCmds(u16 (*recvCmds)[CMD_LENGTH]);
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void StartTransfer(void);
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static void StartTransfer(void);
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static bool8 DoHandshake(void);
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void DoRecv(void);
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void DoSend(void);
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void StopTimer(void);
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void SendRecvDone(void);
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// .rodata
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@ -1924,7 +1929,7 @@ static void EnableSerial(void)
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sSendNonzeroCheck = 0;
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gUnknown_03000D70 = 0;
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gUnknown_03000D72 = 0;
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gUnknown_03000D73 = 0;
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sHandshakePlayerCount = 0;
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gLastSendQueueCount = 0;
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gLastRecvQueueCount = 0;
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}
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@ -2183,3 +2188,102 @@ void LinkVSync(void)
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}
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}
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void Timer3Intr(void)
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{
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StopTimer();
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StartTransfer();
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}
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void SerialCB(void)
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{
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gLink.localId = SIO_MULTI_CNT->id;
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switch (gLink.state)
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{
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case LINK_STATE_CONN_ESTABLISHED:
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gLink.hardwareError = SIO_MULTI_CNT->error;
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DoRecv();
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DoSend();
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SendRecvDone();
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break;
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case LINK_STATE_HANDSHAKE:
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if (DoHandshake())
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{
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if (gLink.isMaster)
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{
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gLink.state = LINK_STATE_INIT_TIMER;
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gLink.serialIntrCounter = 8;
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}
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else
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{
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gLink.state = LINK_STATE_CONN_ESTABLISHED;
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}
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}
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break;
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}
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gLink.serialIntrCounter ++;
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sNumVBlanksWithoutSerialIntr = 0;
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if (gLink.serialIntrCounter == 8)
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{
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gLastRecvQueueCount = gLink.recvQueue.count;
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}
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}
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static void StartTransfer(void)
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{
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REG_SIOCNT |= SIO_START;
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}
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static bool8 DoHandshake(void)
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{
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u8 i;
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u8 playerCount;
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u16 minRecv;
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playerCount = 0;
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minRecv = 0xFFFF;
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if (gLink.handshakeAsMaster == TRUE)
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{
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REG_SIOMLT_SEND = MASTER_HANDSHAKE;
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}
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else
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{
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REG_SIOMLT_SEND = SLAVE_HANDSHAKE;
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}
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*(u64 *)gLink.tempRecvBuffer = REG_SIOMLT_RECV;
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REG_SIOMLT_RECV = 0;
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gLink.handshakeAsMaster = FALSE;
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for (i = 0; i < 4; i ++)
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{
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if ((gLink.tempRecvBuffer[i] & ~0x3) == SLAVE_HANDSHAKE || gLink.tempRecvBuffer[i] == MASTER_HANDSHAKE)
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{
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playerCount ++;
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if (minRecv > gLink.tempRecvBuffer[i] && gLink.tempRecvBuffer[i] != 0)
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{
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minRecv = gLink.tempRecvBuffer[i];
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}
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}
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else
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{
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if (gLink.tempRecvBuffer[i] != 0xFFFF)
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{
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playerCount = 0;
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}
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break;
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}
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}
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gLink.playerCount = playerCount;
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if (gLink.playerCount > 1 && gLink.playerCount == sHandshakePlayerCount && gLink.tempRecvBuffer[0] == MASTER_HANDSHAKE)
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{
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return TRUE;
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}
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if (gLink.playerCount > 1)
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{
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gLink.link_field_F = (minRecv & 3) + 1;
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}
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else
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{
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gLink.link_field_F = 0;
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}
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sHandshakePlayerCount = gLink.playerCount;
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return FALSE;
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}
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