sparc.c File Reference

Filter for SPARC binaries. More...

#include "simple_private.h"

Go to the source code of this file.

Functions
static size_t	sparc_code (void *simple lzma_attribute((__unused__)), uint32_t now_pos, bool is_encoder, uint8_t *buffer, size_t size)
static lzma_ret	sparc_coder_init (lzma_next_coder *next, const lzma_allocator *allocator, const lzma_filter_info *filters, bool is_encoder)
lzma_ret	lzma_simple_sparc_encoder_init (lzma_next_coder *next, const lzma_allocator *allocator, const lzma_filter_info *filters)
lzma_ret	lzma_simple_sparc_decoder_init (lzma_next_coder *next, const lzma_allocator *allocator, const lzma_filter_info *filters)

Detailed Description

Filter for SPARC binaries.

Definition in file sparc.c.

Function Documentation

lzma_simple_sparc_decoder_init()

lzma_ret lzma_simple_sparc_decoder_init	(	lzma_next_coder *	next,
		const lzma_allocator *	allocator,
		const lzma_filter_info *	filters
	)

Definition at line 78 of file sparc.c.

{
    return sparc_coder_init(next, allocator, filters, false);
}

References allocator, filters, and sparc_coder_init().

lzma_simple_sparc_encoder_init()

lzma_ret lzma_simple_sparc_encoder_init	(	lzma_next_coder *	next,
		const lzma_allocator *	allocator,
		const lzma_filter_info *	filters
	)

Definition at line 69 of file sparc.c.

{
    return sparc_coder_init(next, allocator, filters, true);
}

References allocator, filters, and sparc_coder_init().

sparc_code()

static size_t sparc_code ( void *simple   lzma_attribute(__unused__), uint32_t  now_pos, bool  is_encoder, uint8_t *  buffer, size_t  size  )

static

Definition at line 18 of file sparc.c.

{
    size_t i;
    for (i = 0; i + 4 <= size; i += 4) {
 
        if ((buffer[i] == 0x40 && (buffer[i + 1] & 0xC0) == 0x00)
                || (buffer[i] == 0x7F
                && (buffer[i + 1] & 0xC0) == 0xC0)) {
 
            uint32_t src = ((uint32_t)buffer[i + 0] << 24)
                    | ((uint32_t)buffer[i + 1] << 16)
                    | ((uint32_t)buffer[i + 2] << 8)
                    | ((uint32_t)buffer[i + 3]);
 
            src <<= 2;
 
            uint32_t dest;
            if (is_encoder)
                dest = now_pos + (uint32_t)(i) + src;
            else
                dest = src - (now_pos + (uint32_t)(i));
 
            dest >>= 2;
 
            dest = (((0 - ((dest >> 22) & 1)) << 22) & 0x3FFFFFFF)
                    | (dest & 0x3FFFFF)
                    | 0x40000000;
 
            buffer[i + 0] = (uint8_t)(dest >> 24);
            buffer[i + 1] = (uint8_t)(dest >> 16);
            buffer[i + 2] = (uint8_t)(dest >> 8);
            buffer[i + 3] = (uint8_t)(dest);
        }
    }
 
    return i;
}

References dest, i, and src.

Referenced by sparc_coder_init().

sparc_coder_init()

static lzma_ret sparc_coder_init ( lzma_next_coder *  next, const lzma_allocator *  allocator, const lzma_filter_info *  filters, bool  is_encoder  )

static

Definition at line 60 of file sparc.c.

{
    return lzma_simple_coder_init(next, allocator, filters,
            &sparc_code, 0, 4, 4, is_encoder);
}

References allocator, filters, lzma_simple_coder_init(), and sparc_code().

Referenced by lzma_simple_sparc_decoder_init(), and lzma_simple_sparc_encoder_init().