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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2015-03-20 16:43:14 +0100 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2015-03-20 16:43:14 +0100 |
| commit | a90ffe0a21a3a813df4eb9a4dc23b06f50699cde (patch) | |
| tree | 7b2bc56cb7ca16314a3cc4503a61ec6d42bdb9db /runtime/arm | |
| parent | 375244b93979a4ea238d5dc31211209a60a459b1 (diff) | |
| download | compcert-kvx-a90ffe0a21a3a813df4eb9a4dc23b06f50699cde.tar.gz compcert-kvx-a90ffe0a21a3a813df4eb9a4dc23b06f50699cde.zip | |
Support va_arg for vararg arguments of composite (struct/union) types.
ARM is done, IA32 and PowerPC remain to be updated.
Diffstat (limited to 'runtime/arm')
| -rw-r--r-- | runtime/arm/vararg.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/runtime/arm/vararg.S b/runtime/arm/vararg.S index ae06e361..5e319b8b 100644 --- a/runtime/arm/vararg.S +++ b/runtime/arm/vararg.S @@ -75,3 +75,15 @@ FUNCTION(__compcert_va_float64) #endif bx lr ENDFUNCTION(__compcert_va_float64) + +FUNCTION(__compcert_va_composite) + @ r0 = ap parameter + @ r1 = size of the composite, in bytes + ldr r2, [r0, #0] @ r2 = pointer to next argument + ADD r3, r2, r1 @ advance by size + ADD r3, r3, #3 @ 4-align + BIC r3, r3, #3 + str r3, [r0, #0] @ update ap + mov r0, r2 @ result is pointer to composite in stack + bx lr +ENDFUNCTION(__compcert_va_composite) |