X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=Pico%2Fcd%2FPico.s;h=b1f554c5d7f04696ae08c2a75b9db007f928ac01;hb=a5ccbfbaf07e1d91c71b08485a1bd3ee8a06128f;hp=380ca5ddd385f60f69bfbb2910376fc9fd5db033;hpb=66fdc0f0d590809fb0040d08fd57607bf80b1abc;p=picodrive.git diff --git a/Pico/cd/Pico.s b/Pico/cd/Pico.s index 380ca5d..b1f554c 100644 --- a/Pico/cd/Pico.s +++ b/Pico/cd/Pico.s @@ -36,8 +36,8 @@ SekRunPS: ldr lr, =PicoCpuS68k ldr r2, =CycloneEnd_M68k ldr r3, =CycloneEnd_S68k - str r2, [r7,#0x54] - str r3, [lr,#0x54] + str r2, [r7,#0x98] + str r3, [lr,#0x98] @ update aims ldr r8, =SekCycleAim @@ -132,15 +132,14 @@ SekRunPS_end: ldr r7, =PicoCpu ldr lr, =PicoCpuS68k mov r0, #0 - str r0, [r7,#0x54] @ remove CycloneEnd handler - str r0, [lr,#0x54] + str r0, [r7,#0x98] @ remove CycloneEnd handler + str r0, [lr,#0x98] @ return add sp, sp, #2*4 ldmfd sp!, {r4-r11,pc} - CycloneRunLocal: ;@ r0-3 = Temporary registers ldr r4,[r7,#0x40] ;@ r4 = Current PC + Memory Base @@ -159,20 +158,23 @@ CycloneRunLocal: cmp r0,#6 ;@ irq>6 ? andle r1,r1,#7 ;@ Get interrupt mask cmple r0,r1 ;@ irq<=6: Is irq<=mask ? - ldrgt lr,[r7,#0x54] @ Interrupt will definitely use more cycles than our step, - bgt CycloneDoInterrupt @ so make this function return directly to CycloneEnd_* + bgt CycloneDoInterrupt NoIntsLocal: - ;@ Check if our processor is in stopped state and jump to opcode handler if not - ldr r0,[r7,#0x58] +;@ Check if our processor is in special state +;@ and jump to opcode handler if not + ldr r0,[r7,#0x58] ;@ state_flags ldrh r8,[r4],#2 ;@ Fetch first opcode - tst r0,r0 ;@ stopped? + tst r0,#0x03 ;@ special state? andeq r9,r9,#0xf0000000 ldreq pc,[r6,r8,asl #2] ;@ Jump to opcode handler - @ stopped +CycloneSpecial2: + tst r0,#2 ;@ tracing? + bne CycloneDoTrace +;@ stopped or halted sub r4,r4,#2 - ldr r1,[r7,#0x54] + ldr r1,[r7,#0x98] mov r5,#0 bx r1