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changed "spc" to "c_sp"

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Gorilla Sapiens
2025-06-04 06:37:59 +00:00
parent 3d118dc6e5
commit b6f42f9ab2
204 changed files with 913 additions and 909 deletions
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doc/cc65-intern.sgml
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@@ -131,7 +131,7 @@ All other parameters will be pushed to the C-stack from left to right.
The rightmost parameter will have the lowest address on the stack,
and multi-byte parameters will have their least significant byte at the lower address.
The <tt/spc/ pseudo-register is a zeropage pointer to the base of the C-stack.
The <tt/c_sp/ pseudo-register is a zeropage pointer to the base of the C-stack.
If the function is variadic, the <tt/Y/ register will contain the number of
bytes pushed to the stack for this function.
@@ -153,10 +153,10 @@ void cdecl foo(unsigned bar, unsigned char baz);
; Example code for accessing bar. The variable is in A/X after this code snippet:
;
ldy #2 ; Offset of high byte of bar
lda (spc),y ; High byte now in A
lda (c_sp),y ; High byte now in A
tax ; High byte now in X
dey ; Offset of low byte of bar
lda (spc),y ; Low byte now in A
lda (c_sp),y ; Low byte now in A
</verb></tscreen>
<sect1>Epilogue, after the function call<p>
@@ -175,12 +175,12 @@ used if the return type is 32-bit.
If the function has a void return type, the compiler will not depend on the result
of <tt>A/X/sreg</tt>, so these may be clobbered by the function.
The C-stack pointer <tt/spc/ must be restored by the function to its value before the
The C-stack pointer <tt/c_sp/ must be restored by the function to its value before the
function call prologue. It may pop all of its parameters from the C-stack
(e.g. using the <tt/runtime/ function <tt/popa/),
or it could adjust <tt/spc/ directly.
or it could adjust <tt/c_sp/ directly.
If the function is variadic, the <tt/Y/ register contains the number of bytes
pushed to the stack on entry, which may be added to <tt/spc/ to restore its
pushed to the stack on entry, which may be added to <tt/c_sp/ to restore its
original state.
The internal pseudo-register <tt/regbank/ must not be changed by the function.