Documentation update (#1573)

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

docs/01.GETTING-STARTED.md

@@ -45,10 +45,10 @@ python tools/build.py --debug --lto=off
 python tools/build.py --cmake-param=CMAKE_PARAM
 ```
 
-**Set a profile mode (full, minimal)**
+**Set a profile mode (ES5.1, subset of ES2015, minimal)**
 
 ```bash
-python tools/build.py --feature=full|minimal
+python tools/build.py --profile=es5.1|es2015-subset|minimal
 ```
 
 **Use (jerry, compiler-default, external) libc**
@@ -81,6 +81,37 @@ For example the cross-compile to RaspberryPi 2 is something like this:
 python tools/build.py --toolchain=cmake/toolchain_linux_armv7l.cmake
 ```
 
+**Use system memory allocator**
+
+```bash
+python tools/build.py --system-allocator=on --jerry-libc=off
+```
+
+*Note*: System allocator is only supported on 32 bit systems.
+
+**Enable 32bit compressed pointers**
+
+```bash
+python tools/build.py --cpointer-32bit=on
+```
+
+*Note*: There is no compression/decompression on 32 bit systems, if enabled.
+
+**Change default heap size (512K)**
+
+```bash
+python tools/build.py --mem-heap=256
+```
+
+If you would like to use more than 512K, then you must enable the 32 bit compressed pointers.
+
+```bash
+python tools/build.py --cpointer-32bit=on --mem-heap=1024
+```
+
+*Note*: The heap size will be allocated statically at compile time, when JerryScript memory
+allocator is used.
+
 **To get a list of all the available buildoptions for Linux**
 
 ```bash

docs/02.API-REFERENCE.md

@@ -1316,10 +1316,13 @@ jerry_get_utf8_string_length (const jerry_value_t value);
 
 **Summary**
 
-Copy the characters of a string into a specified buffer. The
+Copy the characters of a string into a specified cesu-8 buffer.
-'\0' character could occur in character buffer. Returns 0,
+The '\0' character could occur in the character buffer. Returns 0,
-if the value parameter is not a string or the buffer is
+if the value parameter is not a string or the buffer is not large
-not large enough for the whole string.
+enough for the whole string.
+
+*Note*: Does not put '\0' to the end of string, the return value identifies
+the number of valid bytes in the output buffer.
 
 **Prototype**
 
@@ -1362,9 +1365,12 @@ jerry_string_to_char_buffer (const jerry_value_t value,
 
 Copy the characters of a string into a specified utf-8 buffer.
 The '\0' character could occur in character buffer. Returns 0,
-if the value parameter is not a string or the buffer isn't
+if the value parameter is not a string or the buffer is not
 large enough for the whole string.
 
+*Note*: Does not put '\0' to the end of string, the return value identifies
+the number of valid bytes in the output buffer.
+
 **Prototype**
 
 ```c
@@ -1410,6 +1416,9 @@ parameter is not a string. It will extract the substring between the
 specified start position and the end position (or the end of the string,
 whichever comes first).
 
+*Note*: Does not put '\0' to the end of string, the return value identifies
+the number of valid bytes in the output buffer.
+
 **Prototype**
 
 ```c
@@ -1462,6 +1471,9 @@ parameter is not a string. It will extract the substring between the specified
 start position and the end position (or the end of the string, whichever
 comes first).
 
+*Note*: Does not put '\0' to the end of string, the return value identifies
+the number of valid bytes in the output buffer.
+
 **Prototype**
 
 ```c