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b77dbefe72
In s390_irgen_EXRL, the offset is zero-extended instead of sign-extended, typically causing Valgrind to crash when a negative offset occurs. Fix this with a new helper function that calculates a "relative long" address from a 32-bit offset. Replace other calculations of "relative long" addresses by invocations of this function as well. And for consistency, do the same with "relative" (short) addresses.
16 lines
482 B
Plaintext
16 lines
482 B
Plaintext
------- Copy 10+1 bytes from buffer to target
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------- EXRL to OR in the length
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before: buffer = |0123456789abcdef|
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before: target = |XXXXXXXXXXXXXXXX|
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after: buffer = |0123456789abcdef|
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after: target = |0123456789aXXXXX|
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------- EXRL 0,... has no effect (writes out target)
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target = |0123456789aXXXXX|
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------- EXRL to OR in the syscall number (writes out target)
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target = |0123456789aXXXXX|
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------- EXRL with negative offset
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target = |01010101010XXXXX|
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