382 lines
7.8 KiB
C
382 lines
7.8 KiB
C
/* mload.c (for PPC) (c) 2009, Hermes
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "mload.h"
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static const char mload_fs[] ATTRIBUTE_ALIGN(32) = "/dev/mload";
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static s32 mload_fd = -1;
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/*--------------------------------------------------------------------------------------------------------------*/
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// to init/test if the device is running
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int mload_init()
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{
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int n;
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if(mload_fd>=0) return 0;
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for(n=0;n<10;n++) // try 2.5 seconds
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{
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mload_fd=IOS_Open(mload_fs, 0);
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if(mload_fd>=0) break;
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usleep(250*1000);
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}
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return mload_fd;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// to close the device (remember call it when rebooting the IOS!)
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int mload_close()
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{
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int ret;
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if(mload_fd<0) return -1;
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ret=IOS_Close(mload_fd);
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mload_fd=-1;
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return ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// to get the thread id of mload
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int mload_get_thread_id()
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{
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int ret;
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s32 hid = -1;
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if(mload_init()<0) return -1;
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hid = iosCreateHeap(0x800);
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if(hid<0) return hid;
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ret= IOS_IoctlvFormat(hid, mload_fd, MLOAD_MLOAD_THREAD_ID, ":");
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return ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// get the base and the size of the memory readable/writable to load modules
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int mload_get_load_base(u32 *starlet_base, int *size)
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{
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int ret;
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s32 hid = -1;
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if(mload_init()<0) return -1;
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hid = iosCreateHeap(0x800);
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if(hid<0) return hid;
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ret= IOS_IoctlvFormat(hid, mload_fd, MLOAD_GET_LOAD_BASE, ":ii",starlet_base, size);
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return ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// load and run a module from starlet (it need to allocate MEM2 to send the elf file)
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// the module must be a elf made with stripios
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int mload_module(void *addr, int len)
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{
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int ret;
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void *buf=NULL;
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s32 hid = -1;
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if(mload_init()<0) return -1;
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hid = iosCreateHeap(len+0x800);
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if(hid<0) return hid;
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buf= iosAlloc(hid, len);
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if(!buf) {ret= -1;goto out;}
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memcpy(buf, addr,len);
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ret = IOS_IoctlvFormat(hid, mload_fd, MLOAD_LOAD_MODULE, ":d", buf, len);
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if(ret<0) goto out;
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ret=IOS_IoctlvFormat(hid, mload_fd, MLOAD_RUN_MODULE, ":");
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if(ret<0) {ret= -666;goto out;}
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out:
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return ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// load a module from the PPC
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// the module must be a elf made with stripios
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int mload_elf(void *my_elf, data_elf *data_elf)
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{
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int n,m;
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int p;
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u8 *adr;
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u32 elf=(u32) my_elf;
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if(elf & 3) return -1; // aligned to 4 please!
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elfheader *head=(void *) elf;
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elfphentry *entries;
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if(head->ident0!=0x7F454C46) return -1;
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if(head->ident1!=0x01020161) return -1;
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if(head->ident2!=0x01000000) return -1;
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p=head->phoff;
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data_elf->start=(void *) head->entry;
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for(n=0; n<head->phnum; n++)
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{
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entries=(void *) (elf+p);
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p+=sizeof(elfphentry);
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if(entries->type == 4)
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{
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adr=(void *) (elf + entries->offset);
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if(getbe32(0)!=0) return -2; // bad info (sure)
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for(m=4; m < entries->memsz; m+=8)
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{
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switch(getbe32(m))
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{
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case 0x9:
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data_elf->start= (void *) getbe32(m+4);
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break;
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case 0x7D:
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data_elf->prio= getbe32(m+4);
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break;
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case 0x7E:
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data_elf->size_stack= getbe32(m+4);
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break;
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case 0x7F:
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data_elf->stack= (void *) (getbe32(m+4));
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break;
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}
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}
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}
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else
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if(entries->type == 1 && entries->memsz != 0 && entries->vaddr!=0)
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{
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if(mload_memset((void *) entries->vaddr, 0, entries->memsz)<0) return -1;
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if(mload_seek(entries->vaddr, SEEK_SET)<0) return -1;
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if(mload_write((void *) (elf + entries->offset), entries->filesz)<0) return -1;
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}
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}
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return 0;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// run one thread (you can use to load modules or binary files)
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int mload_run_thread(void *starlet_addr, void *starlet_top_stack, int stack_size, int priority)
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{
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int ret;
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s32 hid = -1;
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if(mload_init()<0) return -1;
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hid = iosCreateHeap(0x800);
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if(hid<0) return hid;
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ret= IOS_IoctlvFormat(hid, mload_fd, MLOAD_RUN_THREAD, "iiii:", starlet_addr,starlet_top_stack, stack_size, priority);
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return ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// stops one starlet thread
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int mload_stop_thread(int id)
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{
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int ret;
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s32 hid = -1;
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if(mload_init()<0) return -1;
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hid = iosCreateHeap(0x800);
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if(hid<0) return hid;
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ret= IOS_IoctlvFormat(hid, mload_fd, MLOAD_STOP_THREAD, "i:", id);
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return ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// continue one stopped starlet thread
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int mload_continue_thread(int id)
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{
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int ret;
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s32 hid = -1;
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if(mload_init()<0) return -1;
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hid = iosCreateHeap(0x800);
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if(hid<0) return hid;
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ret= IOS_IoctlvFormat(hid, mload_fd, MLOAD_CONTINUE_THREAD, "i:", id);
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return ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// fix starlet address to read/write (uses SEEK_SET, etc as mode)
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int mload_seek(int offset, int mode)
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{
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if(mload_init()<0) return -1;
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return IOS_Seek(mload_fd, offset, mode);
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// read bytes from starlet (it update the offset)
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int mload_read(void* buf, u32 size)
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{
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if(mload_init()<0) return -1;
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return IOS_Read(mload_fd, buf, size);
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// write bytes from starlet (it update the offset)
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int mload_write(const void * buf, u32 size)
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{
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if(mload_init()<0) return -1;
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return IOS_Write(mload_fd, buf, size);
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// fill a block (similar to memset)
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int mload_memset(void *starlet_addr, int set, int len)
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{
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int ret;
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s32 hid = -1;
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if(mload_init()<0) return -1;
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hid = iosCreateHeap(0x800);
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if(hid<0) return hid;
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ret= IOS_IoctlvFormat(hid, mload_fd, MLOAD_MEMSET, "iii:", starlet_addr, set, len);
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return ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// get the ehci datas ( ehcmodule.elf uses this address)
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void * mload_get_ehci_data()
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{
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int ret;
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s32 hid = -1;
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if(mload_init()<0) return NULL;
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hid = iosCreateHeap(0x800);
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if(hid<0) return NULL;
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ret= IOS_IoctlvFormat(hid, mload_fd, MLOAD_GET_EHCI_DATA, ":");
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if(ret<0) return NULL;
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return (void *) ret;
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}
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/*--------------------------------------------------------------------------------------------------------------*/
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// set the dev/es ioctlv in routine
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int mload_set_ES_ioctlv_vector(void *starlet_addr)
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{
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int ret;
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s32 hid = -1;
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if(mload_init()<0) return -1;
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hid = iosCreateHeap(0x800);
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if(hid<0) return hid;
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ret= IOS_IoctlvFormat(hid, mload_fd, MLOAD_SET_ES_IOCTLV, "i:", starlet_addr);
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return ret;
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}
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