- integration of patches from Raphael Luba, Thekla, Inc.: * integration of aggregate-by-value (struct, union) support patch for x64 (win and sysv) * windows/x64 asm additions to specify how stack unwinds (help for debuggers, exception handling, etc.) * see Changelog for details - new calling convention modes for thiscalls (platform agnostic, was specific before) * new signature character for platform agnostic thiscalls ('*' / DC_SIGCHAR_CC_THISCALL) - dcCallF(), dcVCallF(), dcArgF() and dcVArgF(): * added support for aggregates-by-value (wasn't part of patch) * change that those functions don't implicitly call dcReset() anymore, which was unflexible (breaking change) - added macros to feature test implementation for aggregate-by-value and syscall support - changed libdyncall_s.lib and libdyncallback_s.lib order in callback test makefiles, as some toolchains are picky about order - doc: * man page updates to describe aggregate interface * manual overview changes to highlight platforms with aggregate-by-value support - test/plain: replaced tests w/ old/stale sctruct interface with new aggregate one

--- a/dyncall/dyncall_call_x64_generic_masm.asm	Sat Apr 16 15:00:58 2022 +0200
+++ b/dyncall/dyncall_call_x64_generic_masm.asm	Thu Apr 21 13:35:47 2022 +0200
@@ -34,12 +34,28 @@
  pop RBP
  ret
 dcCall_x64_sysv ENDP
-dcCall_x64_win64 PROC
+dcCall_x64_sysv_aggr PROC
 OPTION PROLOGUE:NONE, EPILOGUE:NONE
+ push R9
+ call dcCall_x64_sysv
+ pop R9
+ mov qword ptr [R9+0],RAX
+ mov qword ptr [R9+8],RDX
+ movsd qword ptr [R9+16],XMM0
+ movsd qword ptr [R9+24],XMM1
+ ret
+dcCall_x64_sysv_aggr ENDP
+dcCall_x64_win64 PROC FRAME
+OPTION EPILOGUE:NONE
  push RBP
+ .pushreg RBP
  push RSI
+ .pushreg RSI
  push RDI
+ .pushreg RDI
  mov RBP,RSP
+ .setframe RBP, 0
+ .endprolog
  add RCX,15
  and RCX,-16
  sub RSP,RCX
@@ -66,6 +82,15 @@
  pop RBP
  ret
 dcCall_x64_win64 ENDP
+dcCall_x64_win64_aggr PROC
+OPTION PROLOGUE:NONE, EPILOGUE:NONE
+ sub RSP,8
+ call dcCall_x64_win64
+ add RSP,8
+ mov R8,qword ptr [RSP+40]
+ mov qword ptr [R8+0],RAX
+ ret
+dcCall_x64_win64_aggr ENDP
 dcCall_x64_syscall_sysv PROC
 OPTION PROLOGUE:NONE, EPILOGUE:NONE
  mov RAX,RSI