248 lines
6.1 KiB
C++
248 lines
6.1 KiB
C++
U0 LoadOneImport(U8 **_src,U8 *module_base,I64 ld_flags)
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{
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U8 *src=*_src,*ptr2,*st_ptr;
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I64 i,etype;
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CHashExport *tempex=NULL;
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CHashImport *tempiss;
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Bool first=TRUE;
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while (etype=*src++) {
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i=*src(U32 *)++;
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st_ptr=src;
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src+=StrLen(st_ptr)+1;
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if (*st_ptr) {
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if (!first) {
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*_src=st_ptr-5;
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return;
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} else {
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first=FALSE;
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if (!(tempex=HashFind(st_ptr,Fs->hash_table,HTG_ALL-HTT_IMPORT_SYS_SYM))) {
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if (!(ld_flags & LDF_SILENT))
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"Unresolved Reference:%s\n",st_ptr;
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tempiss=CAlloc(sizeof(CHashImport));
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tempiss->str=StrNew(st_ptr);
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tempiss->type=HTT_IMPORT_SYS_SYM;
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tempiss->module_header_entry=st_ptr-5;
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tempiss->module_base=module_base;
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HashAdd(tempiss,Fs->hash_table);
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}
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}
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}
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if (tempex) {
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ptr2=module_base+i;
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if (tempex->type & HTT_FUN)
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i=tempex(CHashFun *)->executable_addr;
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else if (tempex->type & HTT_GLBL_VAR)
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i=tempex(CHashGlblVar *)->data_addr;
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else
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i=tempex->val;
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switch (etype) {
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case EIT_REL_I8: *ptr2(U8 *) =i-ptr2-1; break;
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case EIT_IMM_U8: *ptr2(U8 *) =i; break;
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case EIT_REL_I16: *ptr2(U16 *)=i-ptr2-2; break;
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case EIT_IMM_U16: *ptr2(U16 *)=i; break;
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case EIT_REL_I32: *ptr2(U32 *)=i-ptr2-4; break;
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case EIT_IMM_U32: *ptr2(U32 *)=i; break;
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case EIT_REL_I64: *ptr2(I64 *)=i-ptr2-8; break;
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case EIT_IMM_I64: *ptr2(I64 *)=i; break;
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}
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}
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}
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*_src=src-1;
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}
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U0 SysSymImportsResolve(U8 *st_ptr,I64 ld_flags)
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{
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CHashImport *tempiss;
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U8 *ptr;
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while (tempiss=HashSingleTableFind(st_ptr,Fs->hash_table,HTT_IMPORT_SYS_SYM)) {
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ptr=tempiss->module_header_entry;
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LoadOneImport(&ptr,tempiss->module_base,ld_flags);
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tempiss->type=HTT_INVALID;
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}
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}
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U0 LoadPass1(U8 *src,U8 *module_base,I64 ld_flags)
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{
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U8 *ptr2,*ptr3,*st_ptr;
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I64 i,j,cnt,etype;
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CHashExport *tempex=NULL;
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while (etype=*src++) {
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i=*src(U32 *)++;
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st_ptr=src;
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src+=StrLen(st_ptr)+1;
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switch (etype) {
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case EIT_REL32_EXPORT:
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case EIT_IMM32_EXPORT:
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case EIT_REL64_EXPORT:
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case EIT_IMM64_EXPORT:
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tempex=CAlloc(sizeof(CHashExport));
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tempex->str=StrNew(st_ptr);
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tempex->type=HTT_EXPORT_SYS_SYM|HTF_IMM;
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if (etype==EIT_IMM32_EXPORT||etype==EIT_IMM64_EXPORT)
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tempex->val=i;
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else
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tempex->val=i+module_base;
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HashAdd(tempex,Fs->hash_table);
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SysSymImportsResolve(st_ptr,ld_flags);
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break;
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case EIT_REL_I0...EIT_IMM_I64:
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src=st_ptr-5;
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LoadOneImport(&src,module_base,ld_flags);
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break;
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case EIT_ABS_ADDR:
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if (ld_flags & LDF_NO_ABSS)
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src+=i*sizeof(U32);
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else {
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cnt=i;
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for (j=0;j<cnt;j++) {
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ptr2=module_base+*src(U32 *)++;
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*ptr2(U32 *)+=module_base;
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}
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}
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break;
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sub_switch_start:
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case EIT_CODE_HEAP:
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ptr3=MAlloc(*src(I32 *)++,Fs->code_heap);
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break;
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case EIT_ZEROED_CODE_HEAP:
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ptr3=CAlloc(*src(I32 *)++,Fs->code_heap);
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break;
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sub_switch_end:
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if (*st_ptr) {
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tempex=CAlloc(sizeof(CHashExport));
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tempex->str=StrNew(st_ptr);
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tempex->type=HTT_EXPORT_SYS_SYM|HTF_IMM;
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tempex->val=ptr3;
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HashAdd(tempex,Fs->hash_table);
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}
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cnt=i;
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for (j=0;j<cnt;j++) {
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ptr2=module_base+*src(U32 *)++;
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*ptr2(I32 *)+=ptr3;
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}
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break;
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sub_switch_start:
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case EIT_DATA_HEAP:
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ptr3=MAlloc(*src(I64 *)++);
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break;
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case EIT_ZEROED_DATA_HEAP:
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ptr3=CAlloc(*src(I64 *)++);
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break;
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sub_switch_end:
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if (*st_ptr) {
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tempex=CAlloc(sizeof(CHashExport));
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tempex->str=StrNew(st_ptr);
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tempex->type=HTT_EXPORT_SYS_SYM|HTF_IMM;
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tempex->val=ptr3;
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HashAdd(tempex,Fs->hash_table);
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}
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cnt=i;
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for (j=0;j<cnt;j++) {
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ptr2=module_base+*src(U32 *)++;
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*ptr2(I64 *)+=ptr3;
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}
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break;
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}
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}
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}
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U0 LoadPass2(U8 *src,U8 *module_base,I64)
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{
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U8 *st_ptr;
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I64 i,etype;
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while (etype=*src++) {
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i=*src(U32 *)++;
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st_ptr=src;
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src+=StrLen(st_ptr)+1;
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switch (etype) {
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case EIT_MAIN:
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Call(i+module_base);
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break;
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case EIT_ABS_ADDR:
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src+=sizeof(U32)*i;
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break;
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case EIT_CODE_HEAP:
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case EIT_ZEROED_CODE_HEAP:
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src+=4+sizeof(U32)*i;
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break;
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case EIT_DATA_HEAP:
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case EIT_ZEROED_DATA_HEAP:
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src+=8+sizeof(U32)*i;
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break;
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}
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}
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}
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CBinFile *Load(U8 *filename,I64 ld_flags=0,CBinFile *bfh_addr=INVALID_PTR)
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{//Load a .BIN file module into memory.
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//bfh_addr==INVALID_PTR means don't care what load addr.
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U8 *fbuf,*module_base,*absname;
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I64 size,module_align,misalignment;
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CBinFile *bfh;
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fbuf=DftExt(filename,"BIN.Z");
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if (!(bfh=FileRead(fbuf,&size))) {
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Free(fbuf);
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return NULL;
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}
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//See $LK,"Patch Table Generation",A="FF:::/Compiler/CMain.CPP,EIT_ABS_ADDR"$
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module_align=1<<bfh->module_align_bits;
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if (!module_align || bfh->bin_signature!=BIN_SIGNATURE_VAL) {
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Free(bfh);
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Free(fbuf);
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throw('BinModul');
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}
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if (bfh_addr==INVALID_PTR) {
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if (bfh->module_org==INVALID_PTR) {
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misalignment=module_align-sizeof(CBinFile);
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if (misalignment<0)
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misalignment&=module_align-1;
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if (Fs->code_heap!=Fs->data_heap) {
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if (module_align<16)
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module_align=16;
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bfh_addr=MAllocAligned(size,module_align,Fs->code_heap,misalignment);
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} else if (module_align>8)
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bfh_addr=MAllocAligned(size,module_align,,misalignment);
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else {//Less than 2Gig system memory
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bfh_addr=bfh;
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goto lo_skip; //File is already in code heap area, don't copy.
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}
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} else
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bfh_addr=bfh->module_org;
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}
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MemCpy(bfh_addr,bfh,size);
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Free(bfh);
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lo_skip:
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module_base=bfh_addr(U8 *)+sizeof(CBinFile);
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absname=FileNameAbs(fbuf);
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Free(fbuf);
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fbuf=StrNew(absname);
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FileExtRem(fbuf);
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if (fbuf[1]==':' && StrLen(fbuf)>2)
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HashGenericAdd(fbuf+2,HTT_MODULE|HTF_PUBLIC,bfh_addr);
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LoadPass1(bfh_addr(U8 *)+bfh_addr->patch_table_offset,module_base,ld_flags);
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if (!(ld_flags&LDF_JUST_LOAD))
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LoadPass2(bfh_addr(U8 *)+bfh_addr->patch_table_offset,module_base,ld_flags);
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Free(absname);
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Free(fbuf);
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return bfh_addr;
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}
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U0 LoadKernel()
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{
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HashGenericAdd(KERNEL_MODULE_NAME,HTT_MODULE|HTF_PUBLIC,sys_boot_base-sizeof(CBinFile));
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//Abs patches done here $LK,"CPatchTableAbsAddr",A="FF:D:/Kernel/KStart.CPP,CPatchTableAbsAddr"$.
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LoadPass1(sys_boot_patch_table_base,sys_boot_base,LDF_NO_ABSS|LDF_SILENT);
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//No main routines
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// LoadPass2(sys_boot_patch_table_base,sys_boot_base,0);
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}
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