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targets/XSD_toolchain_gcc
author Andrey Skvortsov <andrej.skvortzov@gmail.com>
Sun, 06 Jan 2019 01:22:46 +0300
changeset 2499 68f4f2d4516b
parent 1478 69fe0b81e951
permissions -rw-r--r--
use pregenerated CRC32 lookup tables for retain on Win32 and GNU/Linux

This code could be possible reused on low-end targets with limited RAM.

code to generate lookup table:
[---------------------------------------------------------------------]

/* CRC lookup table and initial state. */
uint32_t crc32_table[256];

/* Generate CRC32 lookup table. */
void GenerateCRC32Table(void)
{
unsigned int i, j;
/* Use CRC-32-IEEE 802.3 polynomial 0x04C11DB7 (bit reflected). */
uint32_t poly = 0xEDB88320;

for (i = 0; i <= 0xFF; i++)
{
uint32_t c = i;
for (j = 0 ; j < 8 ; j++)
c = (c & 1) ? (c >> 1 ) ^ poly : (c >> 1);
crc32_table[i] = c;
}
}

void main(void)
{
GenerateCRC32Table();
int j=0;
for(int i=0; i<256; i++) {
printf("0x%08X, ", crc32_table[i]);
if (++j >= 8) {
j = 0;
printf("\n");
}
}
}
[---------------------------------------------------------------------]
251
2066d2c65b71 change default linker (ld ) to g++ in XSD for gcc toolchain
greg
parents: 203
diff changeset 
     1
 












2066d2c65b71
change default linker  (ld ) to g++ in XSD for gcc toolchain



greg


parents: 
203

diff
changeset




     2


          <xsd:attribute name="Compiler" type="xsd:string" use="optional" default="gcc"/>








1478






69fe0b81e951
make attribute CFLAGS and LDFLAGS optional and add default empty value



Andrey Skvortsov <andrej.skvortzov@gmail.com>


parents: 
621

diff
changeset




     3


          <xsd:attribute name="CFLAGS" type="xsd:string" use="optional" default=""/>








621






a3ce93d63832
Default gcc toolchain config now use 'gcc' for linking. Was left accidentally to g++ since old times of wxSVG based SVGUI. Cleaned up gcc parameters when linking



Edouard Tisserant


parents: 
251

diff
changeset




     4


          <xsd:attribute name="Linker" type="xsd:string" use="optional" default="gcc"/>








1478






69fe0b81e951
make attribute CFLAGS and LDFLAGS optional and add default empty value



Andrey Skvortsov <andrej.skvortzov@gmail.com>


parents: 
621

diff
changeset




     5


          <xsd:attribute name="LDFLAGS" type="xsd:string" use="optional" default=""/>













beremiz