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Diffstat (limited to 'driver.c')
-rw-r--r--driver.c117
1 files changed, 70 insertions, 47 deletions
diff --git a/driver.c b/driver.c
index 52616fd..f9cf944 100644
--- a/driver.c
+++ b/driver.c
@@ -17,8 +17,18 @@
#include "util.h"
+enum filetype {
+ NONE, /* detect based on file extension */
+ ASM, /* assembly source */
+ ASMPP, /* assembly source requiring preprocessing */
+ C, /* C source */
+ CPPOUT, /* preprocessed C source */
+ OBJ, /* object file */
+ QBE, /* QBE IL */
+};
+
enum phaseid {
- PREPROCESS = 1,
+ PREPROCESS,
COMPILE,
CODEGEN,
ASSEMBLE,
@@ -36,7 +46,8 @@ struct phase {
struct input {
char *name;
- enum phaseid phase;
+ unsigned phases;
+ enum filetype filetype;
bool lib;
};
@@ -68,8 +79,8 @@ usage(const char *fmt, ...)
exit(2);
}
-static enum phaseid
-inputphase(const char *name)
+static enum filetype
+detectfiletype(const char *name)
{
const char *dot;
@@ -77,16 +88,18 @@ inputphase(const char *name)
if (dot) {
++dot;
if (strcmp(dot, "c") == 0)
- return PREPROCESS;
+ return C;
if (strcmp(dot, "i") == 0)
- return COMPILE;
+ return CPPOUT;
if (strcmp(dot, "qbe") == 0)
- return CODEGEN;
- if (strcmp(dot, "s") == 0 || strcmp(dot, "S") == 0)
- return ASSEMBLE;
+ return QBE;
+ if (strcmp(dot, "s") == 0)
+ return ASM;
+ if (strcmp(dot, "S") == 0)
+ return ASMPP;
}
- return LINK;
+ return OBJ;
}
static char *
@@ -131,11 +144,11 @@ spawnphase(struct phase *phase, int *fd, char *input, char *output, bool last)
posix_spawn_file_actions_t actions;
phase->cmd.len = phase->cmdbase;
- if (output) {
+ if (last && output) {
arrayaddptr(&phase->cmd, "-o");
arrayaddptr(&phase->cmd, output);
}
- if (input)
+ if (input && *fd == -1)
arrayaddptr(&phase->cmd, input);
arrayaddptr(&phase->cmd, NULL);
@@ -200,20 +213,18 @@ succeeded(const char *phase, pid_t pid, int status)
}
static void
-buildobj(struct input *input, char *output, enum phaseid last)
+buildobj(struct input *input, char *output)
{
- const char *phase, *ext;
- char *phaseoutput;
+ const char *phase;
size_t i, npids;
pid_t pid;
int status, ret, fd;
- enum phaseid first = input->phase;
bool success = true;
- if (input->phase > last || input->phase == LINK)
+ if (input->filetype == OBJ)
return;
- if (last == LINK) {
- last = ASSEMBLE;
+ if (input->phases & 1<<LINK) {
+ input->phases &= ~(1<<LINK);
output = strdup("/tmp/cproc-XXXXXX");
if (!output)
fatal("strdup:");
@@ -224,28 +235,29 @@ buildobj(struct input *input, char *output, enum phaseid last)
} else if (output) {
if (strcmp(output, "-") == 0)
output = NULL;
- } else if (last != PREPROCESS) {
- switch (last) {
- case COMPILE: ext = "qbe"; break;
- case CODEGEN: ext = "s"; break;
- case ASSEMBLE: ext = "o"; break;
- }
- output = changeext(input->name, ext);
+ } else if (input->phases & 1<<ASSEMBLE) {
+ output = changeext(input->name, "o");
+ } else if (input->phases & 1<<CODEGEN) {
+ output = changeext(input->name, "s");
+ } else if (input->phases & 1<<COMPILE) {
+ output = changeext(input->name, "qbe");
}
if (strcmp(input->name, "-") == 0)
input->name = NULL;
npids = 0;
- for (i = first, fd = -1, phaseoutput = NULL; i <= last; ++i, ++npids) {
- if (i == last)
- phaseoutput = output;
- ret = spawnphase(&phases[i], &fd, input->name, phaseoutput, i == last);
+ for (i = PREPROCESS, fd = -1; input->phases; ++i) {
+ if (!(input->phases & 1<<i))
+ continue;
+ input->phases &= ~(1<<i);
+ ret = spawnphase(&phases[i], &fd, input->name, output, !input->phases);
if (ret) {
warn("%s: spawn \"%s\": %s", phases[i].name, *(char **)phases[i].cmd.val, strerror(ret));
goto kill;
}
- input->name = phaseoutput;
+ ++npids;
}
+ input->name = output;
while (npids > 0) {
pid = wait(&status);
@@ -306,7 +318,7 @@ buildexe(struct input *inputs, size_t ninputs, char *output)
if (waitpid(pid, &status, 0) < 0)
fatal("waitpid %ju:", (uintmax_t)pid);
for (i = 0; i < ninputs; ++i) {
- if (inputs[i].phase < LINK)
+ if (inputs[i].filetype != OBJ)
unlink(inputs[i].name);
}
exit(!succeeded(p->name, pid, status));
@@ -354,7 +366,8 @@ hasprefix(const char *str, const char *pfx)
int
main(int argc, char *argv[])
{
- enum phaseid first = 0, last = LINK;
+ enum phaseid last = LINK;
+ enum filetype filetype = 0;
char *arg, *end, *output = NULL, *arch, *qbearch;
struct array inputs = {0}, *cmd;
struct input *input;
@@ -391,12 +404,16 @@ main(int argc, char *argv[])
input = arrayadd(&inputs, sizeof(*input));
input->name = arg;
input->lib = false;
- if (first)
- input->phase = first;
- else if (arg[1])
- input->phase = inputphase(arg);
- else
- usage("reading from standard input requires -x");
+ input->filetype = filetype == NONE && arg[1] ? detectfiletype(arg) : filetype;
+ switch (input->filetype) {
+ case ASM: input->phases = 1<<ASSEMBLE|1<<LINK; break;
+ case ASMPP: input->phases = 1<<PREPROCESS| 1<<ASSEMBLE|1<<LINK; break;
+ case C: input->phases = 1<<PREPROCESS|1<<COMPILE|1<<CODEGEN|1<<ASSEMBLE|1<<LINK; break;
+ case CPPOUT: input->phases = 1<<COMPILE|1<<CODEGEN|1<<ASSEMBLE|1<<LINK; break;
+ case QBE: input->phases = 1<<CODEGEN|1<<ASSEMBLE|1<<LINK; break;
+ case OBJ: input->phases = 1<<LINK; break;
+ default: usage("reading from standard input requires -x");
+ }
continue;
}
/* TODO: use a binary search for these long parameters */
@@ -446,7 +463,8 @@ main(int argc, char *argv[])
input = arrayadd(&inputs, sizeof(*input));
input->name = nextarg(&argv);
input->lib = true;
- input->phase = LINK;
+ input->filetype = OBJ;
+ input->phases = 1<<LINK;
break;
case 'M':
if (strcmp(arg, "-M") == 0 || strcmp(arg, "-MM") == 0) {
@@ -506,15 +524,17 @@ main(int argc, char *argv[])
case 'x':
arg = nextarg(&argv);
if (strcmp(arg, "none") == 0)
- first = 0;
+ filetype = NONE;
else if (strcmp(arg, "c") == 0)
- first = PREPROCESS;
+ filetype = C;
else if (strcmp(arg, "cpp-output") == 0)
- first = COMPILE;
+ filetype = CPPOUT;
else if (strcmp(arg, "qbe") == 0)
- first = CODEGEN;
+ filetype = QBE;
else if (strcmp(arg, "assembler") == 0)
- first = ASSEMBLE;
+ filetype = ASM;
+ else if (strcmp(arg, "assembler-with-cpp") == 0)
+ filetype = ASMPP;
else
usage("unknown language '%s'", arg);
break;
@@ -536,8 +556,11 @@ main(int argc, char *argv[])
usage("cannot specify -o with multiple input files without linking");
}
}
- arrayforeach (&inputs, input)
- buildobj(input, output, last);
+ arrayforeach (&inputs, input) {
+ /* only run up through the last phase */
+ input->phases &= (1 << last + 1) - 1;
+ buildobj(input, output);
+ }
if (last == LINK) {
if (!output)
output = "a.out";
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 04:08:18 +0000