From 9714d2e75f70f8fcca9fd7b596440a346e504742 Mon Sep 17 00:00:00 2001
From: minux <minux.ma@gmail.com>
Date: Sat, 12 Apr 2014 01:42:46 -0400
Subject: [PATCH] build: add initial NetBSD support.

Not able to generate ELF files on NetBSD yet (lacks the note and crt1.o
is actually named crt0.o on NetBSD), but -run works with these extra
defines:
-D__lint__ -D"__symbolrename(x)=asm(#x)" -D__NetBSD__

The -D__lint__ is an ugly hack, TCC should be able to emulate GCC just
fine, but it seems TCC doesn't support __builtin_va_list yet?
	typedef __builtin_va_list __va_list;
/usr/include/sys/ansi.h:72: error: ';' expected (got "__va_list")
---
 configure    |  1 +
 lib/bcheck.c |  4 ++--
 tccrun.c     | 12 ++++++++++--
 3 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index 8c44e5c..c309de6 100755
--- a/configure
+++ b/configure
@@ -56,6 +56,7 @@ case $targetos in
   DragonFly) noldl=yes;;
   OpenBSD)   noldl=yes;;
   FreeBSD)   noldl=yes;;
+  NetBSD)    noldl=yes;;
   *) ;;
 esac
 
diff --git a/lib/bcheck.c b/lib/bcheck.c
index 76413ad..8ac7d4e 100644
--- a/lib/bcheck.c
+++ b/lib/bcheck.c
@@ -22,7 +22,7 @@
 #include <stdarg.h>
 #include <string.h>
 #if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) \
-    && !defined(__DragonFly__) && !defined(__OpenBSD__)
+    && !defined(__DragonFly__) && !defined(__OpenBSD__) && !defined(__NetBSD__)
 #include <malloc.h>
 #endif
 #if !defined(_WIN32)
@@ -41,7 +41,7 @@
 
 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) \
     || defined(__DragonFly__) || defined(__dietlibc__) \
-    || defined(__UCLIBC__) || defined(__OpenBSD__) \
+    || defined(__UCLIBC__) || defined(__OpenBSD__) || defined(__NetBSD__) \
     || defined(_WIN32) || defined(TCC_UCLIBC)
 #warning Bound checking does not support malloc (etc.) in this environment.
 #undef CONFIG_TCC_MALLOC_HOOKS
diff --git a/tccrun.c b/tccrun.c
index a3e496e..13c2012 100644
--- a/tccrun.c
+++ b/tccrun.c
@@ -486,10 +486,12 @@ static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
     if (level == 0) {
 #if defined(__APPLE__)
         *paddr = uc->uc_mcontext->__ss.__eip;
-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
         *paddr = uc->uc_mcontext.mc_eip;
 #elif defined(__dietlibc__)
         *paddr = uc->uc_mcontext.eip;
+#elif defined(__NetBSD__)
+        *paddr = uc->uc_mcontext.__gregs[_REG_EIP];
 #else
         *paddr = uc->uc_mcontext.gregs[REG_EIP];
 #endif
@@ -497,10 +499,12 @@ static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
     } else {
 #if defined(__APPLE__)
         fp = uc->uc_mcontext->__ss.__ebp;
-#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
+#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
         fp = uc->uc_mcontext.mc_ebp;
 #elif defined(__dietlibc__)
         fp = uc->uc_mcontext.ebp;
+#elif defined(__NetBSD__)
+        fp = uc->uc_mcontext.__gregs[_REG_EBP];
 #else
         fp = uc->uc_mcontext.gregs[REG_EBP];
 #endif
@@ -530,6 +534,8 @@ static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
         *paddr = uc->uc_mcontext->__ss.__rip;
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
         *paddr = uc->uc_mcontext.mc_rip;
+#elif defined(__NetBSD__)
+        *paddr = uc->uc_mcontext.__gregs[_REG_RIP];
 #else
         *paddr = uc->uc_mcontext.gregs[REG_RIP];
 #endif
@@ -539,6 +545,8 @@ static int rt_get_caller_pc(addr_t *paddr, ucontext_t *uc, int level)
         fp = uc->uc_mcontext->__ss.__rbp;
 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
         fp = uc->uc_mcontext.mc_rbp;
+#elif defined(__NetBSD__)
+        fp = uc->uc_mcontext.__gregs[_REG_RBP];
 #else
         fp = uc->uc_mcontext.gregs[REG_RBP];
 #endif