function local variables

         +----------+                  +---------------+            +--------------------+
         |          |                  |               |            |                    |
         |  cRED    | a-32(SP) +-------| var a bool    |<--------=->| var a bool         |
         |          |          |       | cBLU          |            | cBLU               |
         |          |          |       +---------------+            +--------------------+
         |          |          |       |               |            |                    |
         |          | b-30(SP) +-------| var b int16   |<--------=->| var b int16        |
         |          |          :       | cPNK          |            | cPNK               |
         |          |          |       +---------------+            +--------------------+
         |          |          |       |               |            |                    |
         |          |          |       | var c []byte  |<-----+--=->| var c.Data uintptr |----+
         |          |          |       | cGRE          |      |     | cGRE               |    |
         |  stack   |          |       +---------------+      |     +--------------------+    |
         |          |          |                              |     |                    |    |
         |          |          |                              +--=->| var c.Len int      |----+
         |          |          |                              |     | cGRE               |    |
         |          |          |                              |     +--------------------+    |
         |          |          |                              |     |                    |    |
         |          |          |                              +--=->| var c.Cap int      |--==+
   ---=- +----------+          |                                    | cGRE               |    |
     ^   |          |          |                                    +--------------------+    |
     :   |          |          |                                                              |
     |   | arguments|          |                                                              |
  argsize| returns  |          |                                                              |
     :   |          |          |                            local_top-0(SP)---=-+             |
     v   | cYEL     |arg+0(FP) |                                                |             |
   --=-- +----------+ <----------=--- +-------------------------------------+ <-+             |
     ^   |  cGRE    |var-0(SP) |      | cGRE                                |                 |
     :   |  local   |          |      |              c.Cap                  |                 |
     |   |          |          |      |              64bit                  |                 |
     |   |          |          |      +-------------------------------------+ <-=-------------+c.Cap-8(SP)
     |   |          |          |      | cGRE                                |                 |
     |   |          |          |      |              c.Len                  |                 |
     |   |          |          |      |              64bit                  |                 |
     |   |          |          |      +-------------------------------------+ <-=-------------+c.Len-16(SP)
     |   |          |          |      | cGRE                                |                 |
framesize|          |          |      |              c.Data                 |                 |
     |   |          |          |      |              64bit                  |                 |
     |   |          |          |      +----+----+--------+------------------+ <-=-------------+c.Data-24(SP)
     |   |          |          :      |cBLU|cAAA|cPNK    |cAAA              |
     |   |          |          +----> | a  |    |   b    |                  |
     |   |          |                 |8bit|8bit| 16bit  |     32bit        |
     |   +----------+ <----------=--- +----+----+--------+------------------+ <--=a-32(SP)
     |   |for callee| var-32(SP)       ^         ^
     |   |     |    |                  |         |
     :   |     |    |                  |         +-=-b-30(SP)
     v   |cPNK v    |                  |
    -=-- +----------+0(SP)             +-=-a-32(SP)
         | unused   |
         | cAAA     |
         +----------+