Dag-Erling Smørgrav
d4b99bae02
PR: 295431 MFH: 2026Q2 Reviewed by: olgeni Differential Revision: https://reviews.freebsd.org/D57191
27 lines
1.3 KiB
C
27 lines
1.3 KiB
C
--- microcode/stack.h.orig 2022-09-07 06:01:33 UTC
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+++ microcode/stack.h
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@@ -66,12 +66,13 @@ USA.
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stack_death (s); \
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} while (false)
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-#define CAN_PUSH_P(n) (SP_OK_P (STACK_LOC (- (n))))
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+#define CAN_PUSH_P(n) (SP_OK_P (STACK_NEG (n)))
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#define SP_OK_P(sp) ((sp) >= stack_guard)
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#define STACK_LOCATIVE_DECREMENT(locative) (-- (locative))
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#define STACK_LOCATIVE_INCREMENT(locative) ((locative) ++)
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-#define STACK_LOCATIVE_OFFSET(locative, offset) ((locative) + (offset))
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+#define STACK_LOCATIVE_ADD(locative, offset) ((locative) + (offset))
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+#define STACK_LOCATIVE_SUB(locative, offset) ((locative) - (offset))
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#define STACK_LOCATIVE_REFERENCE(locative, offset) ((locative) [(offset)])
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#define STACK_LOCATIVE_DIFFERENCE(newer, older) ((older) - (newer))
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#define STACK_LOCATIVE_ABOVE_P(loc1, loc2) ((loc1) < (loc2))
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@@ -88,5 +89,6 @@ USA.
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#define STACK_PUSH(object) (STACK_LOCATIVE_PUSH (stack_pointer)) = (object)
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#define STACK_POP() (STACK_LOCATIVE_POP (stack_pointer))
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-#define STACK_LOC(offset) (STACK_LOCATIVE_OFFSET (stack_pointer, (offset)))
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+#define STACK_LOC(offset) (STACK_LOCATIVE_ADD (stack_pointer, (offset)))
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+#define STACK_NEG(offset) (STACK_LOCATIVE_SUB (stack_pointer, (offset)))
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#define STACK_REF(offset) (STACK_LOCATIVE_REFERENCE (stack_pointer, (offset)))
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