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#define _GNU_SOURCE
#include "default_libea_handler.h"
#include "handler_utils.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <stdint.h>
typedef union {
unsigned long long all64;
unsigned int by32[2];
} addr64;
static inline size_t arg64_to_size_t(struct spe_reg128* arg0){
addr64 argument0;
argument0.by32[0] = arg0->slot[0];
argument0.by32[1] = arg0->slot[1];
return (size_t)argument0.all64;
}
/**
* default_libea_handler_calloc
* @ls: base pointer to local store area.
* @opdata: LIBEA call opcode & data.
*
* LIBEA library operation, per: upcoming RFC based on POSIX,C99
* implementing:
*
* void *calloc(size_t mnemb, size_t size);
*
* 'addr' (returned) is treated as a 64b EA pointer
* rather than LS offset. On powerpc32 ABI (which is ILP-32), this
* is handled as a 32b EA pointer.
*/
static int default_libea_handler_calloc(char *ls, unsigned long opdata)
{
DECL_2_ARGS();
DECL_RET();
size_t nmemb;
size_t size;
void* calloc_addr = NULL;
addr64 ret2;
nmemb = arg64_to_size_t(arg0);
size = arg64_to_size_t(arg1);
/* OK, now if we are 32 bit and we were passed 64 bit that really was
* bigger than 32 bit we need to bail.
*/
if((arg0->slot[0]== 0 && arg1->slot[0] == 0) || sizeof(nmemb) == 8)
calloc_addr = calloc(nmemb, size);
else
errno = ENOMEM;
ret2.all64 = (unsigned long long) (unsigned long) calloc_addr;
PUT_LS_RC(ret2.by32[0], ret2.by32[1], 0, errno);
return 0;
}
/**
* default_libea_handler_free
* @ls: base pointer to local store area.
* @opdata: LIBEA call opcode & data.
*
* LIBEA library operation, per: upcoming RFC based on POSIX,C99
* implementing:
*
* void free(void* ptr);
*
* 'ptr' is treated as a 64b EA pointer
* rather than LS offset. On powerpc32 ABI (which is ILP-32), this
* is handled as a 32b EA pointer.
*/
static int default_libea_handler_free(char *ls, unsigned long opdata)
{
DECL_1_ARGS();
addr64 ptr;
ptr.by32[0] = arg0->slot[0];
ptr.by32[1] = arg0->slot[1];
free((void *) ((unsigned long) ptr.all64));
return 0;
}
/**
* default_libea_handler_malloc
* @ls: base pointer to local store area.
* @opdata: LIBEA call opcode & data.
*
* LIBEA library operation, per: upcoming RFC based on POSIX,C99
* implementing:
*
* void *malloc(size_t size);
*
* 'ret' (returned) is treated as a 64b EA pointer
* rather than LS offset. On powerpc32 ABI (which is ILP-32), this
* is handled as a 32b EA pointer.
*/
static int default_libea_handler_malloc(char *ls, unsigned long opdata)
{
DECL_1_ARGS();
DECL_RET();
size_t size;
void* malloc_addr = NULL;
addr64 ret2;
size = arg64_to_size_t(arg0);
if(arg0->slot[0] == 0 || sizeof(size) == 8)
malloc_addr = malloc(size);
else
errno = ENOMEM;
ret2.all64 = (unsigned long long) (unsigned long) malloc_addr;
PUT_LS_RC(ret2.by32[0], ret2.by32[1], 0, errno);
return 0;
}
/**
* default_libea_handler_realloc
* @ls: base pointer to local store area.
* @opdata: LIBEA call opcode & data.
*
* LIBEA library operation, per: upcoming RFC based on POSIX,C99
* implementing:
*
* void *realloc(void* ptr, size_t size);
*
* 'ptr' and 'ret' (returned) are treated as 64b EA pointers
* rather than LS offsets. On powerpc32 ABI (which is ILP-32), this
* is handled as a 32b EA pointer.
*/
static int default_libea_handler_realloc(char *ls, unsigned long opdata)
{
DECL_2_ARGS();
DECL_RET();
addr64 ptr;
size_t size;
void* realloc_addr;
addr64 ret2;
ptr.by32[0] = arg0->slot[0];
ptr.by32[0] = arg0->slot[1];
size = arg64_to_size_t(arg1);
if(arg1->slot[0] == 0 || sizeof(size) == 8)
realloc_addr = realloc((void *) ((unsigned long)ptr.all64), size);
else
errno = ENOMEM;
ret2.all64 = (unsigned long long) (unsigned long) realloc_addr;
PUT_LS_RC(ret2.by32[0], ret2.by32[1], 0, errno);
return 0;
}
static int (*default_libea_funcs[SPE_LIBEA_NR_OPCODES]) (char *, unsigned long) = {
[SPE_LIBEA_UNUSED] = NULL,
[SPE_LIBEA_CALLOC] = default_libea_handler_calloc,
[SPE_LIBEA_FREE] = default_libea_handler_free,
[SPE_LIBEA_MALLOC] = default_libea_handler_malloc,
[SPE_LIBEA_REALLOC] = default_libea_handler_realloc,
};
/**
* default_libea_handler
* @ls: base pointer to local store area.
* @opdata: POSIX.1 call opcode & data.
*
* Default POSIX.1 call dispatch function.
*/
int _base_spe_default_libea_handler(char *base, unsigned long offset)
{
int op, opdata;
if (!base) {
DEBUG_PRINTF("%s: mmap LS required.\n", __func__);
return 1;
}
offset = (offset & LS_ADDR_MASK) & ~0x1;
opdata = *((int *)((char *) base + offset));
op = SPE_LIBEA_OP(opdata);
if ((op <= 0) || (op >= SPE_LIBEA_NR_OPCODES)) {
DEBUG_PRINTF("%s: Unhandled type opdata=%08x op=%08x\n", __func__,
opdata, SPE_LIBEA_OP(opdata));
return 1;
}
default_libea_funcs[op] (base, opdata);
return 0;
}
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