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| author | Xavier Leroy <xavier.leroy@inria.fr> | 2015-03-20 16:51:55 +0100 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@inria.fr> | 2015-03-20 16:51:55 +0100 |
| commit | c1205952ab7e3be09cd1a0a9a4d4ee9ddeefe1ea (patch) | |
| tree | 49f4f1dbfb193d9c777759e07559f8a30f233066 /runtime/ia32 | |
| parent | a90ffe0a21a3a813df4eb9a4dc23b06f50699cde (diff) | |
| download | compcert-c1205952ab7e3be09cd1a0a9a4d4ee9ddeefe1ea.tar.gz compcert-c1205952ab7e3be09cd1a0a9a4d4ee9ddeefe1ea.zip | |
Support va_arg for vararg arguments of composite (struct/union) types.
Now for IA32 and PowerPC as well.
Diffstat (limited to 'runtime/ia32')
| -rw-r--r-- | runtime/ia32/vararg.S | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/runtime/ia32/vararg.S b/runtime/ia32/vararg.S index ec55a454..78666c70 100644 --- a/runtime/ia32/vararg.S +++ b/runtime/ia32/vararg.S @@ -67,3 +67,15 @@ FUNCTION(__compcert_va_float64) movl %edx, 0(%ecx) ret ENDFUNCTION(__compcert_va_float64) + +FUNCTION(__compcert_va_composite) + movl 4(%esp), %ecx // %ecx = ap parameter + movl 8(%esp), %edx // %edx = size of composite in bytes + movl 0(%ecx), %eax // %eax = current argument pointer + leal 3(%eax, %edx), %edx // advance by size + andl $0xfffffffc, %edx // and round up to multiple of 4 + movl %edx, 0(%ecx) // update argument pointer + ret +ENDFUNCTION(__compcert_va_composite) + + |