lift wait-for-process-memory-cache-update out of d_process_write, since that path runs on control thread now too as the general 'process handle write' abstraction - just move into the rd_eval_space_write path, since that wait was only for UI benefit anyways

src/arch/arch.c

@@ -14,12 +14,14 @@ arch_info_from_arch(Arch arch)
 #if defined(X64_H)
     case Arch_x64:
     {
+      local_persist U8 trap_inst_bytes[] = {0xcc};
       local_persist read_only ARCH_Info info =
       {
         .reg_block_size                  = sizeof(X64_RegBlock),
         .instruction_pointer_reg_code    = X64_RegCode_rip,
         .stack_pointer_reg_code          = X64_RegCode_rsp,
         .reg_code_count                  = X64_RegCode_COUNT,
+        .trap_instruction                = {trap_inst_bytes, sizeof(trap_inst_bytes)},
         .reg_code_rng_table              = x64_reg_code_rng_table,
         .reg_code_name_table             = x64_reg_code_name_table,
         .reg_code_base_table             = x64_reg_code_base_table,

src/arch/arch.h

@@ -16,6 +16,7 @@ struct ARCH_Info
   ARCH_RegCode instruction_pointer_reg_code;
   ARCH_RegCode stack_pointer_reg_code;
   U16 reg_code_count;
+  String8 trap_instruction;
   Rng1U16 *reg_code_rng_table;
   String8 *reg_code_name_table;
   U8 *reg_code_base_table;
@@ -29,7 +30,7 @@ global read_only Rng1U16 arch_reg_code_rng_nil = {0};
 global read_only String8 arch_reg_code_name_nil = {0};
 global read_only U8 arch_reg_code_u8_nil = 0;
 global read_only B8 arch_reg_code_b8_nil = 0;
-global read_only ARCH_Info arch_info_nil = {0, 0, 0, 0, &arch_reg_code_rng_nil, &arch_reg_code_name_nil, &arch_reg_code_u8_nil, &arch_reg_code_b8_nil};
+global read_only ARCH_Info arch_info_nil = {0, 0, 0, 0, {0}, &arch_reg_code_rng_nil, &arch_reg_code_name_nil, &arch_reg_code_u8_nil, &arch_reg_code_b8_nil};
 
 ////////////////////////////////
 //~ rjf: Abstracted Architecture Functions