Mercurial > pub > dyncall > dyncall
changeset 18:beafc56094bc
- fix for arm/thumb on some platforms (e.g. nintendo ds) to keep compiler from overwriting return values in caller-cleanup code
author | cslag |
---|---|
date | Sat, 01 Aug 2015 19:50:49 +0200 |
parents | 17b10cc8ce8b |
children | 9ceb368cc0ed |
files | dyncall/dyncall_callvm_arm32_thumb.c |
diffstat | 1 files changed, 5 insertions(+), 1 deletions(-) [+] |
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--- a/dyncall/dyncall_callvm_arm32_thumb.c Sat Aug 01 19:13:21 2015 +0200 +++ b/dyncall/dyncall_callvm_arm32_thumb.c Sat Aug 01 19:50:49 2015 +0200 @@ -154,7 +154,11 @@ void dc_callvm_call_arm32_thumb(DCCallVM* in_self, DCpointer target) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; - dcCall_arm32_thumb(target, dcVecData(&self->mVecHead), dcVecSize(&self->mVecHead)); + // This cast is needed in order for the cleanup code in the caller (this very function) to not + // overwrite and use r0 and r1, as we want to pass them back. On some platforms (FreeBSD/arm, Nintendo DS + // the compiler generates cleanup code that writes to those registers by assuming dcCall_arm32_arm didn't + // use them. + ((DClonglong(*)(DCpointer, DCpointer, DCsize))&dcCall_arm32_thumb)(target, dcVecData(&self->mVecHead), dcVecSize(&self->mVecHead)); }