From 7d663615b2a44715e7447a40cae467d7d4e38b9c Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sat, 14 Sep 2019 00:52:24 +0200
Subject: Start on opengl test, fix stack alignment before call (sys-v)

---
 src/std/arena_allocator.c | 5 +++--
 src/std/buffer.c          | 8 +++-----
 src/std/buffer_view.c     | 8 ++++++++
 3 files changed, 14 insertions(+), 7 deletions(-)

(limited to 'src/std')

diff --git a/src/std/arena_allocator.c b/src/std/arena_allocator.c
index 11fb40d..8b0083d 100644
--- a/src/std/arena_allocator.c
+++ b/src/std/arena_allocator.c
@@ -74,7 +74,8 @@ static usize align_ptr_ceil_offset(void *ptr, uintptr_t alignment) {
     return (uintptr_t)align_ptr_ceil(ptr, alignment) - (uintptr_t)ptr;
 }
 
-#define ALLOC_ALIGNMENT 8
+/* 16-byte alignment allows SIMD instructions to be operated on the data */
+#define ALLOC_ALIGNMENT 16
 
 int arena_allocator_alloc(ArenaAllocator *self, usize size, void **mem) {
     ArenaAllocatorNode *current;
@@ -103,6 +104,6 @@ int arena_allocator_alloc(ArenaAllocator *self, usize size, void **mem) {
 int arena_allocator_add_mem(ArenaAllocator *self, usize *result_index) {
     void *null_data;
     null_data = NULL;
-    *result_index = buffer_get_size(&self->mems, void*);
+    *result_index = self->mems.size;
     return buffer_append(&self->mems, &null_data, sizeof(void*));
 }
diff --git a/src/std/buffer.c b/src/std/buffer.c
index 021fce8..dca3b26 100644
--- a/src/std/buffer.c
+++ b/src/std/buffer.c
@@ -28,7 +28,6 @@ void buffer_deinit(Buffer *self) {
 static CHECK_RESULT int buffer_ensure_capacity(Buffer *self, usize new_capacity) {
     usize capacity;
     void *new_mem;
-    int alloc_result;
 
     if(self->capacity >= new_capacity)
         return BUFFER_OK;
@@ -45,15 +44,14 @@ static CHECK_RESULT int buffer_ensure_capacity(Buffer *self, usize new_capacity)
         capacity = cap;
     }
 
-    alloc_result = am_realloc(self->data, capacity, &new_mem);
-    if(alloc_result != ALLOC_OK)
+    if(am_realloc(self->data, capacity, &new_mem) != ALLOC_OK)
         return BUFFER_ALLOC_FAIL;
     
     self->data = new_mem;
     self->capacity = capacity;
     /* Update list of buffers in the allocator with the new address of the buffer data */
     if(self->allocator)
-        am_memcpy(self->allocator->mems.data + sizeof(void*) * self->allocator_index, &self->data, sizeof(void*));
+        am_memcpy(self->allocator->mems.data + self->allocator_index, &self->data, sizeof(void*));
     return BUFFER_OK;
 }
 
@@ -103,7 +101,7 @@ int buffer_set_capacity(Buffer *self, usize new_capacity) {
         self->size = self->capacity;
     /* Update list of buffers in the allocator with the new address of the buffer data */
     if(self->allocator)
-        am_memcpy(self->allocator->mems.data + sizeof(void*) * self->allocator_index, &self->data, sizeof(void*));
+        am_memcpy(self->allocator->mems.data + self->allocator_index, &self->data, sizeof(void*));
     return BUFFER_OK;
 }
 
diff --git a/src/std/buffer_view.c b/src/std/buffer_view.c
index 249928b..8763be2 100644
--- a/src/std/buffer_view.c
+++ b/src/std/buffer_view.c
@@ -1,5 +1,6 @@
 #include "../../include/std/buffer_view.h"
 #include "../../include/std/mem.h"
+#include <string.h>
 
 BufferView create_buffer_view_null(void) {
     BufferView buffer_view;
@@ -15,6 +16,13 @@ BufferView create_buffer_view(const char *data, usize size) {
     return buffer_view;
 }
 
+BufferView create_buffer_view_auto(const char *data) {
+    BufferView buffer_view;
+    buffer_view.data = data;
+    buffer_view.size = strlen(data);
+    return buffer_view;
+}
+
 bool buffer_view_equals(const BufferView *self, const BufferView *other) {
     return self->size == other->size && am_memeql(self->data, other->data, self->size);
 }
-- 
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