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annotate runtime.S @ 620:9d6fed6501ba

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Fix handling of code writes for Z80 core. This seems to get things close to being back to where they were before the big refactor that broke the Z80 core. Some problems remain. Notably the sound driver in Sonic 2 is still quite broken.
author Michael Pavone <pavone@retrodev.com>
date Mon, 29 Dec 2014 23:08:39 -0800
parents 5a6ff0d76032
children 7ed1dbb48f61
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de0085d4ea40 Add asssembly runtime code stub
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b449af228c63 Follow amd64 ABI stack alignment requirements in places it matters so we can call sprintf with floating point arguments without crashing
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e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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3 invalid_msg:
e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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4 .asciz "Invalid instruction at %X\n"
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b449af228c63 Follow amd64 ABI stack alignment requirements in places it matters so we can call sprintf with floating point arguments without crashing
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e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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6 .global m68k_invalid
e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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7 m68k_invalid:
e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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8 lea invalid_msg(%rip), %rdi
e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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9 mov %ecx, %esi
e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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10 xor %rax, %rax
e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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11 call printf
e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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12 mov $1, %rdi
e2918b5208eb Print a message when we try to run an invalid instruction, not when we try to translate it
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13 call exit
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811163790e6c Implement ABCD an SBCD. Fix BTEST with register source.
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6331ddec228f Initial stab at interrupt support. Make native code offsets bigger so I don't have to worry about overflowing the offset. Implement neg and not (untested).
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6331ddec228f Initial stab at interrupt support. Make native code offsets bigger so I don't have to worry about overflowing the offset. Implement neg and not (untested).
Mike Pavone <pavone@retrodev.com>
parents: 72
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