From 3ae355cdcc53b6cf41e25da095b54718ac42567f Mon Sep 17 00:00:00 2001
From: Thierno-Souleymane BAH <thiernosouleymane.bah.etu@univ-lille.fr>
Date: Fri, 15 Jan 2021 07:18:05 +0100
Subject: [PATCH] feat(try() and throw() functions done)
---
Makefile | 13 +++++++++----
try.c | 29 +++++++++++++++++++++++++++++
try.h | 16 ++++++++++++++++
3 files changed, 54 insertions(+), 4 deletions(-)
create mode 100644 try.c
create mode 100644 try.h
diff --git a/Makefile b/Makefile
index 25b8148..1a630bd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,15 @@
-all: display_stack
+OPTION=-m32
+
+all: display_stack try_mul
display_stack : display_stack.o
- gcc -o $@ $^
+ gcc $(OPTION) -o $@ $^
+
+try_mul : try.o try_mul.o
+ gcc $(OPTION) -o $@ $^
%.o:%.c
- gcc -c $<
+ gcc $(OPTION) -c $<
clean:
- rm -f *.o *.s display_stack
+ rm -f *.o *.s display_stack try_mul
diff --git a/try.c b/try.c
new file mode 100644
index 0000000..83ff446
--- /dev/null
+++ b/try.c
@@ -0,0 +1,29 @@
+#include <stdlib.h>
+#include <assert.h>
+#include "try.h"
+
+int try(ctx_t *pctx, func_t *f, int arg)
+{
+ asm("movl %%esp, %0"
+ "\n\t"
+ "movl %%ebp, %1"
+ : "=r"(pctx->esp), "=r"(pctx->ebp));
+
+ return f(arg);
+}
+
+int throw(ctx_t * pctx, int r)
+{
+ assert(pctx != NULL);
+
+ static int r_tmp;
+ r_tmp = r;
+
+ asm("movl %0 ,%%esp"
+ "\n\t"
+ "movl %1 ,%%ebp "
+ :
+ : "r"(pctx->esp), "r"(pctx->ebp));
+
+ return r_tmp;
+}
\ No newline at end of file
diff --git a/try.h b/try.h
new file mode 100644
index 0000000..c440da3
--- /dev/null
+++ b/try.h
@@ -0,0 +1,16 @@
+#if !defined(TRY)
+#define TRY
+
+typedef int(func_t)(int);
+
+typedef struct ctx_s
+{
+ void *esp;
+ void *ebp;
+} ctx_t;
+
+int try(ctx_t *, func_t *, int);
+
+int throw(ctx_t *, int);
+
+#endif // TRY
--
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