On Wed, 4 Sep 2024, Evgeny Karpov wrote:
Monday, September 4, 2024
Martin Storsjö wrote:
compilation time
adrp x0, symbol + 256
9000 adrp x0, 0
As the symbol offset is 256, you will need to encode the offset "256" in
the instruction immediate field. Not "256 >> 12". This is the somewhat
On Wed, 4 Sep 2024, Martin Storsjö wrote:
On Wed, 4 Sep 2024, Evgeny Karpov wrote:
Monday, September 4, 2024
Martin Storsjö wrote:
Let's consider the following example, when symbol is located at 3072.
1. Example without the fix
compilation time
adrp x0, (3072 + 256) & ~0xFFF // x0 =
On Wed, 4 Sep 2024, Evgeny Karpov wrote:
Monday, September 4, 2024
Martin Storsjö wrote:
Let's consider the following example, when symbol is located at 3072.
1. Example without the fix
compilation time
adrp x0, (3072 + 256) & ~0xFFF // x0 = 0
add x0, x0, (3072 + 256) & 0xFFF
Monday, September 4, 2024
Martin Storsjö wrote:
>> Let's consider the following example, when symbol is located at 3072.
>>
>> 1. Example without the fix
>> compilation time
>> adrp x0, (3072 + 256) & ~0xFFF // x0 = 0
>> add x0, x0, (3072 + 256) & 0xFFF // x0 = 3328
>>
>> linking t
On Wed, 4 Sep 2024, Evgeny Karpov wrote:
Monday, September 2, 2024
Martin Storsjö wrote:
The only non-obvious thing, is that for IMAGE_REL_ARM64_PAGEBASE_REL21,
i.e. "adrp" instructions, the immediate that gets stored in the
instruction, is the byte offset to the symbol.
After linking, when
Monday, September 2, 2024
Martin Storsjö wrote:
> The only non-obvious thing, is that for IMAGE_REL_ARM64_PAGEBASE_REL21,
> i.e. "adrp" instructions, the immediate that gets stored in the
> instruction, is the byte offset to the symbol.
>
> After linking, when the instruction is interpreted at ex
On Mon, 2 Sep 2024, Evgeny Karpov wrote:
aarch64.cc has been updated to prevent emitting "symbol + offset"
for SYMBOL_SMALL_ABSOLUTE for the PECOFF target. "symbol + offset"
cannot be used in relocations for aarch64-w64-mingw32 due to
relocation requirements.
What relocation requirements are t
Evgeny Karpov writes:
> aarch64.cc has been updated to prevent emitting "symbol + offset"
> for SYMBOL_SMALL_ABSOLUTE for the PECOFF target. "symbol + offset"
> cannot be used in relocations for aarch64-w64-mingw32 due to
> relocation requirements.
> Instead, it will adjust the address by an offse
aarch64.cc has been updated to prevent emitting "symbol + offset"
for SYMBOL_SMALL_ABSOLUTE for the PECOFF target. "symbol + offset"
cannot be used in relocations for aarch64-w64-mingw32 due to
relocation requirements.
Instead, it will adjust the address by an offset with the
"add" instruction.
gc
