132 lines
4.8 KiB
PHP
132 lines
4.8 KiB
PHP
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;-----------------------------------------------------------------------;
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; Picture of stack upon entering 32-bit half of WNDPROC callback:
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;
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; +-----------------------+
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; | callback parameters |
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; +-----------------------+
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; | retf to Win3.0 |
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; | |
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; +-----------------------+
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; | 32-bit pfn |
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; | |
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; +-----------------------+
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; | iCallbackType |
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; | |
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; +-----------------------+
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; | bp | <-- bp/ebp, references up
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; +-----------------------+
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; | si |
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; +-----------------------+
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; | di |
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; +-----------------------+
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; | ds | <-- si/esi, references down if necessary
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; +-----------------------+
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; | THKSPACE16 | if necessary
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; +-----------------------+
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; | MSGSTRUCT | if necessary
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; +-----------------------+
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; | repacked structure(s) | if necessary
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; +-----------------------+
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; | retf to thunk cleanup | if necessary
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; | |
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; +-----------------------+
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; | ss, sp | <-- ebx, references saved ss:sp
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; | |
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; +-----------------------+
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; | dword alignment pad | if necessary
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; +-----------------------+
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;-----------------------------------------------------------------------;
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;-----------------------------------------------------------------------;
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; Picture of stack upon entering 32-bit half of non-WNDPROC callback:
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;
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; +-----------------------+
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; | callback parameters |
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; +-----------------------+
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; | retf to Win3.0 |
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; | |
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; +-----------------------+
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; | 32-bit pfn |
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; | |
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; +-----------------------+
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; | iCallbackType |
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; | |
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; +-----------------------+
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; | bp | <-- bp/ebp, references up
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; +-----------------------+
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; | si |
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; +-----------------------+
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; | di |
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; +-----------------------+
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; | ds |
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; +-----------------------+
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; | ss, sp | <-- ebx, references saved ss:sp
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; | |
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; +-----------------------+
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; | dword alignment pad | if necessary
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; +-----------------------+
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;-----------------------------------------------------------------------;
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;-----------------------------------------------------------------------;
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; ParameterFrame
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;
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; base
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; The register on which to base addresses.
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;
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; Define the parameter frame for 16->32 callbacks. This should match
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; the picture above.
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;-----------------------------------------------------------------------;
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ParameterFrame macro base
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base&_pParams equ < [base+14]>
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;retf <dword ptr [base+10]>
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base&_pCallback32 equ <dword ptr [base+ 6]>
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base&_iCallbackType equ <dword ptr [base+ 2]>
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;bp < word ptr [base+ 0]>
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;si < word ptr [base- 2]>
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;di < word ptr [base- 4]>
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;ds < word ptr [base- 6]>
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;ss,sp <dword ptr [base-10]>
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base&_addr_registers equ < [base-10]>
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endm
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;-----------------------------------------------------------------------;
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; LocalFrame
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;
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; base
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; The register on which to base addresses.
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;
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; segovr
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; The segment override necessary, if any.
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;
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; Define the local variable frame. The variables will be accessed via
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; the THKSPACE16 structure offsets. The base&_cleanup label is used
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; for discarding the local variables and any extra space used by the
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; thunk.
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;-----------------------------------------------------------------------;
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LocalFrame macro base, segovr
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base&_cleanup equ <dword ptr segovr&[base]>
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base&_space equ < segovr&[base - (size THKSPACE16)]>
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endm
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ParameterFrame ebp
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LocalFrame esi
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ParameterFrame bp
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LocalFrame bp
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LocalFrame si, ss:
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LocalFrame bx, ss:
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;-----------------------------------------------------------------------;
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;Equates related to stack frame setup by thunk-compiler generated
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;dispatcher.
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;-----------------------------------------------------------------------;
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ifdef FSAVEALL
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offsetThkParams equ 72 ;must match value generated by thunk.exe
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else
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offsetThkParams equ 40 ;must match value generated by thunk.exe
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endif
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bp_top equ <[bp+offsetThkParams]>
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bx_top equ <ss:[bx+offsetThkParams]>
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