30 files changed, 310 insertions, 226 deletions

diff --git a/src/prc/posix.c b/src/prc/posix.c
index bce793e..d73050b 100644
--- a/src/prc/posix.c
+++ b/src/prc/posix.c
@@ -37,8 +37,8 @@ int spawn_wait(struct spawn *s)
         return -1;
     else if (WIFSIGNALED(stat))
     {
-        fprintf(stderr, "%s terminated by signal %d\n", s->path,
-            WTERMSIG(stat));
+        fprintf(stderr, "%s terminated by signal %d (%s)\n", s->path,
+            WTERMSIG(stat), strsignal(stat));
         return -1;
     }
     else if (WIFSTOPPED(stat))
diff --git a/src/prc1/CMakeLists.txt b/src/prc1/CMakeLists.txt
index 82d670d..e738343 100644
--- a/src/prc1/CMakeLists.txt
+++ b/src/prc1/CMakeLists.txt
@@ -30,6 +30,7 @@ add_executable(prc1
     storage.c
     td.c
     tmp.c
+    triplet.c
     type.c
     warn.c
     ws.c
@@ -42,5 +43,6 @@ if(CMAKE_BUILD_TYPE STREQUAL "Debug")
     target_compile_options(prc1 PRIVATE -Og)
 endif()
 add_subdirectory(cgen)
+add_subdirectory(triplet)
 include(GNUInstallDirs)
 install(TARGETS prc1 DESTINATION ${CMAKE_INSTALL_LIBEXECDIR}/${PROJECT_NAME})
diff --git a/src/prc1/arg.c b/src/prc1/arg.c
index f55d322..e844aee 100644
--- a/src/prc1/arg.c
+++ b/src/prc1/arg.c
@@ -26,11 +26,19 @@ static int debug(struct args *a, const char *arg)
 
 static int target(struct args *a, const char *arg)
 {
+    fprintf(stderr, "%s: TODO, arg=%s\n", __func__, arg);
+    return -1;
+}
+
+static int backend(struct args *a, const char *arg)
+{
     if (!strcmp(arg, "qbe"))
-        a->tgt = QBE;
+        a->backend = QBE;
+    else if (!strcmp(arg, "c99"))
+        a->backend = C99;
     else
     {
-        fprintf(stderr, "invalid or unsupported target \"%s\"", arg);
+        fprintf(stderr, "invalid or unsupported backend \"%s\"", arg);
         return -1;
     }
 
@@ -90,7 +98,8 @@ int arg(struct args *a, const char *value)
     static const struct arg args[] =
     {
         {"-d", debug},
-        {"-t", target},
+        {"-t", target, SPACEVAL},
+        {"-b", backend, SPACEVAL},
         {"-I", inc, SPACEVAL | JOINVAL}
     };
 
@@ -124,7 +133,9 @@ int arg(struct args *a, const char *value)
 
 void arg_defaults(struct args *a)
 {
-    a->tgt = QBE;
+    a->backend = QBE;
+    /* TODO: replace */
+    a->triplet = "x86_64-linux-gnu";
 }
 
 static void free_input(struct arg_input *i)
diff --git a/src/prc1/arg.h b/src/prc1/arg.h
index 0e9a7ab..438639a 100644
--- a/src/prc1/arg.h
+++ b/src/prc1/arg.h
@@ -11,8 +11,8 @@ struct arg_input
 
 struct args
 {
-    enum target {QBE} tgt;
-    const char *name, *src;
+    enum {QBE, C99} backend;
+    const char *name, *src, *triplet;
     const struct arg *arg;
     struct arg_input incs;
 };
diff --git a/src/prc1/cgen.c b/src/prc1/cgen.c
index c394f44..63396ed 100644
--- a/src/prc1/cgen.c
+++ b/src/prc1/cgen.c
@@ -5,10 +5,13 @@ int cgen(const struct ast *ast, struct cgen *c)
 {
     const struct args *args = ast->args;
 
-    switch (args->tgt)
+    switch (args->backend)
     {
     case QBE:
         return cgen_qbe(ast, c);
+    case C99:
+        fprintf(stderr, "%s: C99 backend TODO\n", __func__);
+        return -1;
     }
 
     fprintf(stderr, "%s: unreachable\n", __func__);
diff --git a/src/prc1/cgen/CMakeLists.txt b/src/prc1/cgen/CMakeLists.txt
index 77aa786..d788d2f 100644
--- a/src/prc1/cgen/CMakeLists.txt
+++ b/src/prc1/cgen/CMakeLists.txt
@@ -3,6 +3,7 @@ target_sources(prc1 PRIVATE
     call.c
     fn.c
     free.c
+    from.c
     gl.c
     global.c
     param.c
diff --git a/src/prc1/cgen/from.c b/src/prc1/cgen/from.c
new file mode 100644
index 0000000..be018ef
--- /dev/null
+++ b/src/prc1/cgen/from.c
@@ -0,0 +1,8 @@
+#include "cgen.h"
+#include "cgen/prv.h"
+#include "from.h"
+
+int from_cgen(const struct from *f, struct cgen *c)
+{
+    return c->drv->from(f, c);
+}
diff --git a/src/prc1/cgen/prv.h b/src/prc1/cgen/prv.h
index dc99404..32601f0 100644
--- a/src/prc1/cgen/prv.h
+++ b/src/prc1/cgen/prv.h
@@ -3,6 +3,7 @@
 
 #include "cgen.h"
 #include "call.h"
+#include "from.h"
 #include "print.h"
 #include "set.h"
 #include "storage.h"
@@ -13,6 +14,7 @@ struct cgen_drv
     int (*gl)(const struct storage *, struct cgen *);
     int (*ws)(const struct storage *, struct cgen *);
     int (*call)(const struct call *, struct cgen *);
+    int (*from)(const struct from *, struct cgen *);
     int (*set)(const struct set *, struct cgen *);
     int (*fn)(const struct fn *, struct cgen *);
     void (*free)(struct cgen_prv *);
diff --git a/src/prc1/cgen/qbe/CMakeLists.txt b/src/prc1/cgen/qbe/CMakeLists.txt
index 5d0bd63..a9e7155 100644
--- a/src/prc1/cgen/qbe/CMakeLists.txt
+++ b/src/prc1/cgen/qbe/CMakeLists.txt
@@ -1,6 +1,7 @@
 target_sources(prc1 PRIVATE
     call.c
     free.c
+    from.c
     fn.c
     gl.c
     print.c
diff --git a/src/prc1/cgen/qbe/from.c b/src/prc1/cgen/qbe/from.c
new file mode 100644
index 0000000..40b2724
--- /dev/null
+++ b/src/prc1/cgen/qbe/from.c
@@ -0,0 +1,134 @@
+#include "from.h"
+#include "stmt.h"
+#include "cgen.h"
+#include "qbe.h"
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static int loadvar(const struct from_it *st, struct cgen *c)
+{
+    const struct stentry *e = st->u.e;
+    size_t sz = e->t->sz;
+    const char *tmp = cgen_tmp(sz);
+
+    printf("%%%s =%s load%s ", tmp, cgen_sz(sz), cgen_load(e->t));
+    cgen_printvar(c->fn, e);
+    putchar('\n');
+    return 0;
+}
+
+/* TODO: de-duplicate function */
+static unsigned long long tonum(const char *s)
+{
+    unsigned long long v;
+    char *end;
+
+    errno = 0;
+    v = strtoull(s, &end, 0);
+
+    if (*s == '-' || errno || *end)
+        return strtoll(s, NULL, 0);
+
+    return v;
+}
+
+static int loadval(const struct from *fr, struct cgen *c)
+{
+    const struct stentry *dst = fr->var;
+    const struct from_it *st = &fr->start;
+    unsigned long long v = tonum(st->u.tk->s);
+
+    printf("store%s %llu, ", cgen_sz(dst->t->sz), v);
+    cgen_printvar(c->fn, dst);
+    putchar('\n');
+    return 0;
+}
+
+static int endvar(const struct from *fr, struct cgen *c)
+{
+    fprintf(stderr, "%s: TODO\n", __func__);
+    return -1;
+}
+
+static int endval(const struct from *fr, struct cgen *c)
+{
+    const struct stentry *src = fr->var;
+    size_t sz = src->t->sz;
+    const char *tmp = cgen_tmp(sz);
+    const struct from_it *end = &fr->end;
+    const struct tk *tk = end->u.tk;
+    int neg = *tk->s == '-';
+    size_t bl = fr->block_i;
+
+    printf("%%%s =%s load%s ", tmp, cgen_sz(sz), cgen_load(src->t));
+    cgen_printvar(c->fn, src);
+    putchar('\n');
+    printf("%%%s =%s c", tmp, cgen_sz(sz));
+    fputs(neg ? "sge" : "uge", stdout);
+    printf("%s ", cgen_sz(sz));
+    printf("%%%s, %s\n", tmp, tk->s);
+    printf("jnz %%%s, @__end%zu, @__blockbody%zu\n", tmp, bl, bl);
+    printf("@__blockbody%zu\n", bl);
+    return 0;
+}
+
+static int from_var(const struct from *fr, struct cgen *c)
+{
+    const struct from_it *st = &fr->start;
+
+    switch (st->type)
+    {
+    case FR_VAR:
+        if (loadvar(st, c))
+            return -1;
+        break;
+
+    case FR_VAL:
+        if (loadval(fr, c))
+            return -1;
+        break;
+    }
+
+    printf("@__block%zu\n", fr->block_i);
+
+    switch (fr->end.type)
+    {
+    case FR_VAR:
+        if (endvar(fr, c))
+            return -1;
+        break;
+
+    case FR_VAL:
+        if (endval(fr, c))
+            return -1;
+        break;
+    }
+
+    return 0;
+}
+
+int from_end(const struct stmt *s, struct cgen *c)
+{
+    const struct from *fr = &s->u.from;
+    const struct stentry *src = fr->var;
+    const struct type *t = src->t;
+    size_t sz = t->sz;
+    const char *tmp = cgen_tmp(sz);
+    const struct fn *fn = c->fn;
+
+    printf("%%%s =%s load%s ", tmp, cgen_sz(sz), cgen_load(t));
+    cgen_printvar(fn, src);
+    putchar('\n');
+    printf("%%%s =%s add %%%s, 1\n", tmp, cgen_sz(sz), tmp);
+    printf("store%s %%%s, ", cgen_sz(sz), tmp);
+    cgen_printvar(fn, src);
+    putchar('\n');
+    printf("jmp @__block%zu\n", fr->block_i);
+    return 0;
+}
+
+int qbe_from(const struct from *fr, struct cgen *c)
+{
+    return from_var(fr, c);
+}
diff --git a/src/prc1/cgen/qbe/qbe.c b/src/prc1/cgen/qbe/qbe.c
index c27bad6..d727bc0 100644
--- a/src/prc1/cgen/qbe/qbe.c
+++ b/src/prc1/cgen/qbe/qbe.c
@@ -154,6 +154,7 @@ int cgen_qbe(const struct ast *ast, struct cgen *c)
         .print = qbe_print,
         .call = qbe_call,
         .free = qbe_free,
+        .from = qbe_from,
         .set = qbe_set,
         .gl = qbe_gl,
         .ws = qbe_ws,
diff --git a/src/prc1/cgen/qbe/qbe.h b/src/prc1/cgen/qbe/qbe.h
index b0e66f1..206cf32 100644
--- a/src/prc1/cgen/qbe/qbe.h
+++ b/src/prc1/cgen/qbe/qbe.h
@@ -3,6 +3,7 @@
 
 #include "call.h"
 #include "cgen.h"
+#include "from.h"
 #include "print.h"
 #include "set.h"
 #include "storage.h"
@@ -20,6 +21,7 @@ int qbe_call(const struct call *m, struct cgen *c);
 int qbe_set(const struct set *m, struct cgen *c);
 int qbe_gl(const struct storage *gl, struct cgen *c);
 int qbe_ws(const struct storage *s, struct cgen *c);
+int qbe_from(const struct from *fn, struct cgen *c);
 int qbe_fn(const struct fn *fn, struct cgen *c);
 void qbe_free(struct cgen_prv *p);
 
diff --git a/src/prc1/div.c b/src/prc1/div.c
index 7236a71..5c6422f 100644
--- a/src/prc1/div.c
+++ b/src/prc1/div.c
@@ -8,25 +8,25 @@
 #include "ws.h"
 
 static const struct seq
-    linkage = {(struct step[]){{ID, "linkage"}, {0}}, .fn = lk},
+    externals = {(struct step[]){{ID, "externals"}, {0}}, .fn = lk},
     types = {(struct step[]){{ID, "types"}, {0}}, .fn = td},
     imports = {(struct step[]){{ID, "imports"}, {0}}, .fn = im},
     procedure = {(struct step[]){{ID, "procedure"}, {0}}, .fn = pr};
 
 static const struct seq fnseq[] =
 {
-    linkage,
+    externals,
     types,
     imports,
     procedure,
-    {(struct step[]){{ID, "storage"}, {0}}, .fn = ws},
+    {(struct step[]){{ID, "locals"}, {0}}, .fn = ws},
     {(struct step[]){{ID, "globals"}, {0}}, .fn = gl},
     {0}
 };
 
 static const struct seq imseq[] =
 {
-    linkage,
+    externals,
     types,
     imports,
     {0}
@@ -34,7 +34,7 @@ static const struct seq imseq[] =
 
 static const struct seq pseq[] =
 {
-    linkage,
+    externals,
     procedure,
     {0}
 };
diff --git a/src/prc1/from.c b/src/prc1/from.c
index 83f9b71..8561b8f 100644
--- a/src/prc1/from.c
+++ b/src/prc1/from.c
@@ -1,11 +1,11 @@
 #include "from.h"
-#include "cgen.h"
 #include "dbg.h"
 #include "fn.h"
 #include "errloc.h"
 #include "stmt.h"
 #include "storage.h"
 #include "tmp.h"
+#include "triplet.h"
 #include "type.h"
 #include <errno.h>
 #include <stddef.h>
@@ -17,133 +17,6 @@ void from_free(struct from *fr)
 {
 }
 
-static int loadvar(const struct from_it *st, struct cgen *c)
-{
-    const struct stentry *e = st->u.e;
-    size_t sz = e->t->sz;
-    const char *tmp = cgen_tmp(sz);
-
-    printf("%%%s =%s load%s ", tmp, cgen_sz(sz), cgen_load(e->t));
-    cgen_printvar(c->fn, e);
-    putchar('\n');
-    return 0;
-}
-
-/* TODO: de-duplicate function */
-static unsigned long long tonum(const char *s)
-{
-    unsigned long long v;
-    char *end;
-
-    errno = 0;
-    v = strtoull(s, &end, 0);
-
-    if (*s == '-' || errno || *end)
-        return strtoll(s, NULL, 0);
-
-    return v;
-}
-
-static int loadval(const struct from *fr, struct cgen *c)
-{
-    const struct stentry *dst = fr->var;
-    const struct from_it *st = &fr->start;
-    unsigned long long v = tonum(st->u.tk->s);
-
-    printf("store%s %llu, ", cgen_sz(dst->t->sz), v);
-    cgen_printvar(c->fn, dst);
-    putchar('\n');
-    return 0;
-}
-
-static int endvar(const struct from *fr, struct cgen *c)
-{
-    fprintf(stderr, "%s: TODO\n", __func__);
-    return -1;
-}
-
-static int endval(const struct from *fr, struct cgen *c)
-{
-    const struct stentry *src = fr->var;
-    size_t sz = src->t->sz;
-    const char *tmp = cgen_tmp(sz);
-    const struct from_it *end = &fr->end;
-    const struct tk *tk = end->u.tk;
-    int neg = *tk->s == '-';
-    size_t bl = fr->block_i;
-
-    printf("%%%s =%s load%s ", tmp, cgen_sz(sz), cgen_load(src->t));
-    cgen_printvar(c->fn, src);
-    putchar('\n');
-    printf("%%%s =%s c", tmp, cgen_sz(sz));
-    fputs(neg ? "sge" : "uge", stdout);
-    printf("%s ", cgen_sz(sz));
-    printf("%%%s, %s\n", tmp, tk->s);
-    printf("jnz %%%s, @__end%zu, @__blockbody%zu\n", tmp, bl, bl);
-    printf("@__blockbody%zu\n", bl);
-    return 0;
-}
-
-static int from_var(const struct from *fr, struct cgen *c)
-{
-    const struct from_it *st = &fr->start;
-
-    switch (st->type)
-    {
-    case FR_VAR:
-        if (loadvar(st, c))
-            return -1;
-        break;
-
-    case FR_VAL:
-        if (loadval(fr, c))
-            return -1;
-        break;
-    }
-
-    printf("@__block%zu\n", fr->block_i);
-
-    switch (fr->end.type)
-    {
-    case FR_VAR:
-        if (endvar(fr, c))
-            return -1;
-        break;
-
-    case FR_VAL:
-        if (endval(fr, c))
-            return -1;
-        break;
-    }
-
-    return 0;
-}
-
-int from_cgen(const struct from *fr, struct cgen *c)
-{
-    return from_var(fr, c);
-}
-
-static int from_end(const struct stmt *s, struct cgen *c)
-{
-    const struct from *fr = &s->u.from;
-    const struct stentry *src = fr->var;
-    const struct type *t = src->t;
-    size_t sz = t->sz;
-    const char *tmp = cgen_tmp(sz);
-    const struct fn *fn = c->fn;
-
-    printf("%%%s =%s load%s ", tmp, cgen_sz(sz), cgen_load(t));
-    cgen_printvar(fn, src);
-    putchar('\n');
-    printf("%%%s =%s add %%%s, 1\n", tmp, cgen_sz(sz), tmp);
-    printf("store%s %%%s, ", cgen_sz(sz), tmp);
-    cgen_printvar(fn, src);
-    putchar('\n');
-    printf("jmp @__block%zu\n", fr->block_i);
-    return 0;
-}
-
 static int checksym(const struct fn *fn, const struct tk *tk,
     struct from_it *fr)
 {
@@ -241,7 +114,8 @@ static int finalize(struct prv *p, struct fn *fn, struct from *fr)
     return 0;
 }
 
-static const struct type *valtype(const struct fn *fn, const struct tk *tk)
+static const struct type *valtype(const struct fn *fn, const char *tr,
+    const struct tk *tk)
 {
     char *end;
 
@@ -254,20 +128,21 @@ static const struct type *valtype(const struct fn *fn, const struct tk *tk)
         strtoll(tk->s, &end, 0);
 
         if (errno || *end)
-            return type_find(fn, "ulong");
+            return type_find(fn, tr, "ulong");
 
-        return type_find(fn, "long");
+        return type_find(fn, tr, "long");
     }
 
-    return type_find(fn, "word");
+    return type_find(fn, tr, "word");
 }
 
-static const struct type *ittype(const struct fn *fn, const struct from_it *it)
+static const struct type *ittype(const struct fn *fn, const char *tr,
+    const struct from_it *it)
 {
     switch (it->type)
     {
     case FR_VAL:
-        return valtype(fn, it->u.tk);
+        return valtype(fn, tr, it->u.tk);
     case FR_VAR:
         return it->u.e->t;
     }
@@ -277,9 +152,9 @@ static const struct type *ittype(const struct fn *fn, const struct from_it *it)
 }
 
 static const struct type *gettype(const struct fn *fn,
-    const struct from_it *a, const struct from_it *b)
+    const char *tr, const struct from_it *a, const struct from_it *b)
 {
-    const struct type *ta = ittype(fn, a), *tb = ittype(fn, b);
+    const struct type *ta = ittype(fn, tr, a), *tb = ittype(fn, tr, b);
 
     return ta->sz > tb->sz ? ta : tb;
 }
@@ -287,13 +162,14 @@ static const struct type *gettype(const struct fn *fn,
 int from(const struct lex *l, struct prv *p)
 {
     const struct tk *start = p->stk + 1, *end = p->stk + 3;
+    const char *tr = triplet(p);
     struct fn *fn = fn_cur(p);
     struct from fr = {0};
     const struct type *t;
 
     if (check(fn, start, &fr.start)
         || check(fn, end, &fr.end)
-        || !(t = gettype(fn, &fr.start, &fr.end))
+        || !(t = gettype(fn, tr, &fr.start, &fr.end))
         || !(fr.var = tmp_create(fn, t)))
         return -1;
 
diff --git a/src/prc1/from.h b/src/prc1/from.h
index 8a77629..89b2f04 100644
--- a/src/prc1/from.h
+++ b/src/prc1/from.h
@@ -29,6 +29,7 @@ int from_id(const struct lex *l, struct prv *p);
 int from_by(const struct lex *l, struct prv *p);
 int from_idby(const struct lex *l, struct prv *p);
 int from_cgen(const struct from *m, struct cgen *c);
+int from_end(const struct stmt *s, struct cgen *c);
 void from_free(struct from *fr);
 
 #endif
diff --git a/src/prc1/kw.c b/src/prc1/kw.c
index 0f4ca9f..8531c52 100644
--- a/src/prc1/kw.c
+++ b/src/prc1/kw.c
@@ -7,7 +7,7 @@ static const char *kws[] =
     /* headers */
     "public", "function",
     /* sections */
-    "types", "storage", "linkage", "procedure", "locals", "globals", "imports",
+    "types", "externals", "procedure", "locals", "globals", "imports",
     /* types */
     "union", "struct", "constant", "alias", "prototype",
     /* operators */
@@ -26,9 +26,9 @@ static const char *kws[] =
     /* comparators */
     "is", "not", "equal", "greater", "smaller", "and", "or",
     /* built-in types */
-    "void", "array", "pointer",
+    "void", "char", "array", "pointer",
     /* built-in signed types */
-    "char", "schar", "short", "int", "long", "longlong",
+    "schar", "short", "int", "long", "longlong",
     /* built-in unsigned types */
     "uchar", "ushort", "uint", "ulong", "ulonglong"
 };
diff --git a/src/prc1/lk.c b/src/prc1/lk.c
index 8bfb738..488529d 100644
--- a/src/prc1/lk.c
+++ b/src/prc1/lk.c
@@ -8,5 +8,5 @@ int lk(const struct lex *l, struct prv *p)
 {
     struct fn *fn = fn_cur(p);
 
-    return storage(l, p, "linkage section", 1, &fn->lk);
+    return storage(l, p, "externals section", 1, &fn->lk);
 }
diff --git a/src/prc1/prc1.c b/src/prc1/prc1.c
index 634608b..bd481c1 100644
--- a/src/prc1/prc1.c
+++ b/src/prc1/prc1.c
@@ -41,13 +41,8 @@ int main(int argc, char *argv[])
         fname = args.src;
     }
 
-    if (!(l.loc.f = malloc(strlen(fname) + 1)))
-    {
-        perror("malloc(3)");
+    if (!(l.loc.f = sdup(fname)))
         goto end;
-    }
-    else
-        strcpy(l.loc.f, fname);
 
     l.args = a.args = &args;
 
diff --git a/src/prc1/prv.h b/src/prc1/prv.h
index e3658bc..945c7be 100644
--- a/src/prc1/prv.h
+++ b/src/prc1/prv.h
@@ -43,10 +43,10 @@ struct seq
 };
 
 int kw(const char *s);
-int prev(const struct prv *p);
 int push(const struct pos *pos, struct prv *p);
 int pop(const struct lex *l, struct prv *p);
 void reset(struct prv *p);
 char *sdup(const char *s);
+const char *triplet(const struct prv *p);
 
 #endif
diff --git a/src/prc1/sym.c b/src/prc1/sym.c
index fb67f14..69d3bca 100644
--- a/src/prc1/sym.c
+++ b/src/prc1/sym.c
@@ -363,7 +363,8 @@ static int invalid(const struct tk *tk, const struct type *a,
 static const struct type *genlittype(struct prv *p)
 {
     const struct fn *fn = fn_cur(p);
-    const struct type *byte = type_find(fn, "char");
+    const char *tr = triplet(p);
+    const struct type *byte = type_find(fn, tr, "char");
     struct type *bytedup = NULL, *t = NULL;
 
     if (!byte)
@@ -420,9 +421,10 @@ const struct type *sym_type(struct prv *p, const struct sym *s)
         case SYM_ID:
         {
             const struct stentry *e = fn_var(fn, tk);
+            const char *tr = triplet(p);
             const struct type *t;
 
-            if (!e && !(t = type_ufind(fn, tk->s)))
+            if (!e && !(t = type_ufind(fn, tr, tk->s)))
                 return NULL;
             else if (e)
                 t = e->t;
diff --git a/src/prc1/td.c b/src/prc1/td.c
index af88af8..4f894af 100644
--- a/src/prc1/td.c
+++ b/src/prc1/td.c
@@ -98,9 +98,10 @@ static void insert(struct td *td, struct type *t)
 static int cid(const struct lex *l, struct prv *p)
 {
     const struct fn *fn = fn_cur(p);
+    const char *tr = triplet(p);
     const struct tk *id = p->stk, *v = p->stk + 3;
     const struct stentry *e;
-    const struct type *t = type_find(fn, id->s);
+    const struct type *t = type_find(fn, tr, id->s);
     struct tdconstant *tdc = p->tdc;
     struct td *td = fn->td;
     struct type *nt;
@@ -127,7 +128,7 @@ static int cid(const struct lex *l, struct prv *p)
             v->s, loc->f, loc->line, loc->col);
         return -1;
     }
-    else if (!(t = type_find(fn, v->s)))
+    else if (!(t = type_find(fn, tr, v->s)))
     {
         errloc(id, "undefined reference to value \"%s\"", v->s);
         return -1;
@@ -173,12 +174,12 @@ static int cnum(const struct lex *l, struct prv *p)
 {
     const struct fn *fn = fn_cur(p);
     const struct tk *id = p->stk, *num = p->stk + 3;
-    const char *name = id->s;
+    const char *name = id->s, *tr = triplet(p);
     const struct stentry *e;
     struct td *td = fn->td;
     struct type *nt;
     struct tdconstant *tdc = p->tdc;
-    const struct type *t = type_find(fn, name);
+    const struct type *t = type_find(fn, tr, name);
     int sign = *num->s == '-';
     unsigned long long uv = 0;
     const struct loc *loc;
@@ -247,8 +248,9 @@ static int c(const struct lex *l, struct prv *p)
 {
     const struct fn *fn = fn_cur(p);
     const struct tk *id = p->stk;
+    const char *tr = triplet(p);
     const struct stentry *e;
-    const struct type *t = type_find(fn, id->s);
+    const struct type *t = type_find(fn, tr, id->s);
     struct td *td = fn->td;
     struct type *nt;
     const struct tdconstant *tdc = p->tdc;
@@ -426,10 +428,11 @@ static int end(const struct lex *l, struct prv *p)
 static int s(const struct lex *l, struct prv *p)
 {
     const struct tk *id = p->stk;
+    const char *tr = triplet(p);
     struct fn *fn = fn_cur(p);
     struct td *td = fn->td;
     struct type *nt;
-    const struct type *t = type_find(fn, id->s);
+    const struct type *t = type_find(fn, tr, id->s);
 
     if (t)
     {
@@ -467,8 +470,9 @@ static int tt(const struct lex *l, struct prv *p, const struct type *t)
 {
     int ret = -1;
     const struct fn *fn = fn_cur(p);
+    const char *tr = triplet(p);
     const struct tk *id = p->id;
-    const struct type *tp = type_ufind(fn, id->s);
+    const struct type *tp = type_ufind(fn, tr, id->s);
     const struct loc *loc = &id->loc;
     struct td *td = fn->td;
     struct type *nt;
diff --git a/src/prc1/tmp.c b/src/prc1/tmp.c
index 96b2208..c990216 100644
--- a/src/prc1/tmp.c
+++ b/src/prc1/tmp.c
@@ -1,6 +1,7 @@
 #include "tmp.h"
 #include "dbg.h"
 #include "type.h"
+#include "prv.h"
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -11,7 +12,7 @@ const struct stentry *tmp_create(struct fn *fn, const struct type *t)
     static const char fmt[] = "__tmp%zu", path[] = "(temporary)";
     int r = snprintf(NULL, 0, fmt, fn->ntmps);
     char *s = NULL, *tname = NULL, *pathdup = NULL;
-    struct tmp *tmp;
+    struct tmp *tmp = NULL;
 
     if (!(tname = type_name(t)))
         goto failure;
@@ -21,20 +22,15 @@ const struct stentry *tmp_create(struct fn *fn, const struct type *t)
         goto failure;
     }
     else if (!(s = malloc(r + 1))
-        || !(pathdup = malloc(strlen(path) + 1)))
+        || !(tmp = malloc(sizeof *tmp)))
     {
         perror("malloc(3)");
         goto failure;
     }
+    else if (!(pathdup = sdup(path + 1)))
+        goto failure;
 
     snprintf(s, r + 1, fmt, fn->ntmps++);
-    strcpy(pathdup, path);
-
-    if (!(tmp = malloc(sizeof *tmp)))
-    {
-        perror("realloc(3)");
-        goto failure;
-    }
 
     *tmp = (struct tmp)
     {
@@ -68,6 +64,7 @@ const struct stentry *tmp_create(struct fn *fn, const struct type *t)
 
 failure:
     free(s);
+    free(tmp);
     free(tname);
     free(pathdup);
     return NULL;
diff --git a/src/prc1/triplet.c b/src/prc1/triplet.c
new file mode 100644
index 0000000..37d6e10
--- /dev/null
+++ b/src/prc1/triplet.c
@@ -0,0 +1,40 @@
+#include "prv.h"
+#include "arg.h"
+#include "parse.h"
+#include "triplet/prv.h"
+#include <stddef.h>
+#include <string.h>
+
+const char *triplet(const struct prv *p)
+{
+    const struct args *args = p->ast->args;
+
+    return args->triplet;
+}
+
+static const struct type *find(const char *s, const struct type (*v)[12])
+{
+    for (size_t i = 0; i < sizeof *v / sizeof **v; i++)
+        if (!strcmp(s, (*v)[i].u.b.name))
+            return &(*v)[i];
+
+    return NULL;
+}
+
+const struct type *triplet_type(const char *tr, const char *s)
+{
+    static const struct
+    {
+        const char *s;
+        const struct type (*v)[12];
+    } m[] =
+    {
+        {"x86_64-linux-gnu", &x86_64_linux_gnu}
+    };
+
+    for (size_t i = 0; i < sizeof m / sizeof *m; i++)
+        if (!strcmp(tr, m[i].s))
+            return find(s, m[i].v);
+
+    return NULL;
+}
diff --git a/src/prc1/triplet.h b/src/prc1/triplet.h
new file mode 100644
index 0000000..cccca0c
--- /dev/null
+++ b/src/prc1/triplet.h
@@ -0,0 +1,9 @@
+#ifndef TRIPLET_H
+#define TRIPLET_H
+
+#include "prv.h"
+
+const char *triplet(const struct prv *p);
+const struct type *triplet_type(const char *tr, const char *s);
+
+#endif
diff --git a/src/prc1/triplet/CMakeLists.txt b/src/prc1/triplet/CMakeLists.txt
new file mode 100644
index 0000000..49b17ee
--- /dev/null
+++ b/src/prc1/triplet/CMakeLists.txt
@@ -0,0 +1,3 @@
+target_sources(prc1 PRIVATE
+    x86_64-linux-gnu.c
+)
diff --git a/src/prc1/triplet/prv.h b/src/prc1/triplet/prv.h
new file mode 100644
index 0000000..342036c
--- /dev/null
+++ b/src/prc1/triplet/prv.h
@@ -0,0 +1,3 @@
+#include "parse.h"
+
+extern const struct type x86_64_linux_gnu[12];
diff --git a/src/prc1/triplet/x86_64-linux-gnu.c b/src/prc1/triplet/x86_64-linux-gnu.c
new file mode 100644
index 0000000..c22bc93
--- /dev/null
+++ b/src/prc1/triplet/x86_64-linux-gnu.c
@@ -0,0 +1,18 @@
+#include "triplet/prv.h"
+#include "parse.h"
+
+const struct type x86_64_linux_gnu[] =
+{
+    {.type = BUILTIN, .u.b = {"void"}},
+    {.type = BUILTIN, .u.b = {"char"}, .sz = 1, .sign = 1, .align = 1},
+    {.type = BUILTIN, .u.b = {"schar"}, .sz = 1, .sign = 1, .align = 1},
+    {.type = BUILTIN, .u.b = {"short"}, .sz = 2, .sign = 1, .align = 2},
+    {.type = BUILTIN, .u.b = {"int"}, .sz = 4, .sign = 1, .align = 4},
+    {.type = BUILTIN, .u.b = {"long"}, .sz = 8, .sign = 1, .align = 8},
+    {.type = BUILTIN, .u.b = {"longlong"}, .sz = 8, .sign = 1, .align = 8},
+    {.type = BUILTIN, .u.b = {"uchar"}, .sz = 1, .align = 1},
+    {.type = BUILTIN, .u.b = {"ushort"}, .sz = 2, .align = 2},
+    {.type = BUILTIN, .u.b = {"uint"}, .sz = 4, .align = 4},
+    {.type = BUILTIN, .u.b = {"ulong"}, .sz = 8, .align = 8},
+    {.type = BUILTIN, .u.b = {"ulonglong"}, .sz = 8, .align = 8}
+};
diff --git a/src/prc1/type.c b/src/prc1/type.c
index 92cc53f..cdd8f72 100644
--- a/src/prc1/type.c
+++ b/src/prc1/type.c
@@ -4,6 +4,7 @@
 #include "lex.h"
 #include "parse.h"
 #include "prv.h"
+#include "triplet.h"
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -159,61 +160,31 @@ char *type_name(const struct type *t)
     return ret;
 }
 
-const struct type *type_ufind(const struct fn *fn, const char *s)
+const struct type *type_ufind(const struct fn *fn, const char *tr,
+    const char *s)
 {
-    static const struct type builtins[] =
-    {
-        {.type = BUILTIN, .u.b = {"void"}},
-        {.type = BUILTIN, .u.b = {"char"}, .sz = 1, .sign = 1, .align = 1},
-        {.type = BUILTIN, .u.b = {"schar"}, .sz = 1, .sign = 1, .align = 1},
-        {.type = BUILTIN, .u.b = {"short"}, .sz = 2, .sign = 1, .align = 2},
-        {.type = BUILTIN, .u.b = {"int"}, .sz = 4, .sign = 1, .align = 4},
-        {.type = BUILTIN, .u.b = {"long"}, .sz = 8, .sign = 1, .align = 8},
-        {.type = BUILTIN, .u.b = {"longlong"}, .sz = 8, .sign = 1, .align = 8},
-        {.type = BUILTIN, .u.b = {"uchar"}, .sz = 1, .align = 1},
-        {.type = BUILTIN, .u.b = {"ushort"}, .sz = 2, .align = 2},
-        {.type = BUILTIN, .u.b = {"uint"}, .sz = 4, .align = 4},
-        {.type = BUILTIN, .u.b = {"ulong"}, .sz = 8, .align = 8},
-        {.type = BUILTIN, .u.b = {"ulonglong"}, .sz = 8, .align = 8}
-    };
-
     const struct td *td = fn->td;
+    const struct type *t;
 
-    if (fn->parent)
-    {
-        const struct type *t = type_find(fn->parent, s);
-
-        if (t)
-            return t;
-    }
-
-    for (size_t i = 0; i < sizeof builtins / sizeof *builtins; i++)
-    {
-        const struct type *t = &builtins[i];
-
-        if (!strcmp(t->u.b.name, s))
-            return t;
-    }
-
-    if (td)
+    if (fn->parent && (t = type_find(fn->parent, tr, s)))
+        return t;
+    else if ((t = triplet_type(tr, s)))
+        return t;
+    else if (td)
         for (const struct type *t = td->types; t; t = t->next)
             if (!strcmp(t->tk->s, s))
                 return t;
 
     for (size_t i = 0; i < fn->nimps; i++)
-    {
-        const struct type *t = type_ufind(fn->imps[i].ast.fns, s);
-
-        if (t)
+        if ((t = type_ufind(fn->imps[i].ast.fns, tr, s)))
             return t;
-    }
 
     return NULL;
 }
 
-const struct type *type_find(const struct fn *fn, const char *s)
+const struct type *type_find(const struct fn *fn, const char *tr, const char *s)
 {
-    const struct type *t = type_ufind(fn, s);
+    const struct type *t = type_ufind(fn, tr, s);
 
     if (t && t->type == T)
         return t->u.t.alias;
@@ -270,7 +241,7 @@ static int aetc(const struct lex *l, struct prv *p)
 static int aid(const struct lex *l, struct prv *p)
 {
     const struct tk *qty = p->stk + 2;
-    const struct type *ct = type_find(fn_cur(p), qty->s);
+    const struct type *ct = type_find(fn_cur(p), triplet(p), qty->s);
     struct type *t;
     unsigned long long v;
 
@@ -410,7 +381,7 @@ static int t(const struct lex *l, struct prv *p)
 {
     const struct fn *fn = fn_cur(p);
     const struct tk *tk = p->stk;
-    const struct type *t = type_find(fn, tk->s);
+    const struct type *t = type_find(fn, triplet(p), tk->s);
     struct type *tt = p->t;
 
     if (!t)
diff --git a/src/prc1/type.h b/src/prc1/type.h
index 455f243..ae53b34 100644
--- a/src/prc1/type.h
+++ b/src/prc1/type.h
@@ -5,8 +5,8 @@
 #include "prv.h"
 #include "parse.h"
 
-const struct type *type_ufind(const struct fn *fn, const char *s);
-const struct type *type_find(const struct fn *fn, const char *s);
+const struct type *type_ufind(const struct fn *fn, const char *t, const char *s);
+const struct type *type_find(const struct fn *fn, const char *t, const char *s);
 const struct type *type_insert(struct prv *p, struct type *a);
 char *type_name(const struct type *t);
 int type(const struct lex *l, struct prv *p,
diff --git a/src/prc1/ws.c b/src/prc1/ws.c
index 94014ce..c553f6e 100644
--- a/src/prc1/ws.c
+++ b/src/prc1/ws.c
@@ -8,5 +8,5 @@ int ws(const struct lex *l, struct prv *p)
 {
     struct fn *fn = fn_cur(p);
 
-    return storage(l, p, "storage section", 1, &fn->ws);
+    return storage(l, p, "locals section", 1, &fn->ws);
 }