/*
* Generic Dynamic compiler generator
- *
+ *
* Copyright (c) 2003 Fabrice Bellard
*
* The COFF object format support was extracted from Kazu's QEMU port
#define elf_check_arch(x) ((x) == EM_68K)
#define ELF_USES_RELOCA
+#elif defined(HOST_MIPS)
+
+#define ELF_CLASS ELFCLASS32
+#define ELF_ARCH EM_MIPS
+#define elf_check_arch(x) ((x) == EM_MIPS)
+#define ELF_USES_RELOC
+
+#elif defined(HOST_MIPS64)
+
+/* Assume n32 ABI here, which is ELF32. */
+#define ELF_CLASS ELFCLASS32
+#define ELF_ARCH EM_MIPS
+#define elf_check_arch(x) ((x) == EM_MIPS)
+#define ELF_USES_RELOCA
+
#else
#error unsupported CPU - please update the code
#endif
typedef int32_t host_long;
typedef uint32_t host_ulong;
#define swabls(x) swab32s(x)
+#define swablss(x) swab32ss(x)
#else
typedef int64_t host_long;
typedef uint64_t host_ulong;
#define swabls(x) swab64s(x)
+#define swablss(x) swab64ss(x)
#endif
#ifdef ELF_USES_RELOCA
#ifdef CONFIG_FORMAT_COFF
-#include "a.out.h"
-
typedef int32_t host_long;
typedef uint32_t host_ulong;
+#include "a.out.h"
+
#define FILENAMELEN 256
typedef struct coff_sym {
struct nlist_extended
{
union {
- char *n_name;
- long n_strx;
+ char *n_name;
+ long n_strx;
} n_un;
- unsigned char n_type;
- unsigned char n_sect;
+ unsigned char n_type;
+ unsigned char n_sect;
short st_desc;
unsigned long st_value;
unsigned long st_size;
*p = bswap32(*p);
}
+void swab32ss(int32_t *p)
+{
+ *p = bswap32(*p);
+}
+
void swab64s(uint64_t *p)
{
*p = bswap64(*p);
}
+void swab64ss(int64_t *p)
+{
+ *p = bswap64(*p);
+}
+
uint16_t get16(uint16_t *p)
{
uint16_t val;
} swaptest;
swaptest.i = 1;
- return (h->e_ident[EI_DATA] == ELFDATA2MSB) !=
+ return (h->e_ident[EI_DATA] == ELFDATA2MSB) !=
(swaptest.b[0] == 0);
}
-
+
void elf_swap_ehdr(struct elfhdr *h)
{
swab16s(&h->e_type); /* Object file type */
swabls(&rel->r_offset);
swabls(&rel->r_info);
#ifdef ELF_USES_RELOCA
- swabls(&rel->r_addend);
+ swablss(&rel->r_addend);
#endif
}
-struct elf_shdr *find_elf_section(struct elf_shdr *shdr, int shnum, const char *shstr,
+struct elf_shdr *find_elf_section(struct elf_shdr *shdr, int shnum, const char *shstr,
const char *name)
{
int i;
for(i = 0; i < ehdr.e_shnum; i++) {
sec = &shdr[i];
- if (sec->sh_type == SHT_RELOC && sec->sh_info == sh_index)
+ if (sec->sh_type == SHT_RELOC && sec->sh_info == sh_index)
return i;
}
return 0;
ElfW(Sym) *sym;
char *shstr;
ELF_RELOC *rel;
-
+
fd = open(filename, O_RDONLY);
- if (fd < 0)
+ if (fd < 0)
error("can't open file '%s'", filename);
-
+
/* Read ELF header. */
if (read(fd, &ehdr, sizeof (ehdr)) != sizeof (ehdr))
error("unable to read file header");
/* read all section data */
sdata = malloc(sizeof(void *) * ehdr.e_shnum);
memset(sdata, 0, sizeof(void *) * ehdr.e_shnum);
-
+
for(i = 0;i < ehdr.e_shnum; i++) {
sec = &shdr[i];
if (sec->sh_type != SHT_NOBITS)
}
sec = &shdr[ehdr.e_shstrndx];
- shstr = sdata[ehdr.e_shstrndx];
+ shstr = (char *)sdata[ehdr.e_shstrndx];
/* swap relocations */
for(i = 0; i < ehdr.e_shnum; i++) {
strtab_sec = &shdr[symtab_sec->sh_link];
symtab = (ElfW(Sym) *)sdata[symtab_sec - shdr];
- strtab = sdata[symtab_sec->sh_link];
-
+ strtab = (char *)sdata[symtab_sec->sh_link];
+
nb_syms = symtab_sec->sh_size / sizeof(ElfW(Sym));
if (do_swap) {
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
{
char *q;
int c, i, len;
-
+
if (ext_sym->e.e.e_zeroes != 0) {
q = sym->st_name;
for(i = 0; i < 8; i++) {
if (sym->st_syment->e_scnum == data_shndx &&
text_data >= sym->st_value &&
text_data < sym->st_value + sym->st_size) {
-
+
return sym->st_name;
}
name = get_sym_name(symtab + *(uint32_t *)(rel->r_reloc->r_symndx));
if (!strcmp(name, ".data"))
name = name_for_dotdata(rel);
+ if (name[0] == '.')
+ return NULL;
return name;
}
uint32_t *n_strtab;
EXE_SYM *sym;
EXE_RELOC *rel;
-
- fd = open(filename, O_RDONLY
+
+ fd = open(filename, O_RDONLY
#ifdef _WIN32
| O_BINARY
#endif
);
- if (fd < 0)
+ if (fd < 0)
error("can't open file '%s'", filename);
-
+
/* Read COFF header. */
if (read(fd, &fhdr, sizeof (fhdr)) != sizeof (fhdr))
error("unable to read file header");
/* read section headers */
shdr = load_data(fd, sizeof(struct external_filehdr) + fhdr.f_opthdr, fhdr.f_nscns * sizeof(struct external_scnhdr));
-
+
/* read all section data */
sdata = malloc(sizeof(void *) * fhdr.f_nscns);
memset(sdata, 0, sizeof(void *) * fhdr.f_nscns);
-
+
const char *p;
for(i = 0;i < fhdr.f_nscns; i++) {
sec = &shdr[i];
if (!data_sec)
error("could not find .data section");
coff_data_shndx = data_sec - shdr;
-
+
coff_symtab = load_data(fd, fhdr.f_symptr, fhdr.f_nsyms*SYMESZ);
for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
for(i=0;i<8;i++)
n_strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), STRTAB_SIZE);
- strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), *n_strtab);
-
+ strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), *n_strtab);
+
nb_syms = fhdr.f_nsyms;
for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) {
} else {
sym->st_size = 0;
}
-
+
sym->st_type = ext_sym->e_type;
sym->st_shndx = ext_sym->e_scnum;
}
-
+
/* find text relocations, if any */
sec = &shdr[coff_text_shndx];
coff_relocs = load_data(fd, sec->s_relptr, sec->s_nreloc*RELSZ);
/* set coff relocation */
relocs = malloc(sizeof(struct coff_rel) * nb_relocs);
- for (i = 0, ext_rel = coff_relocs, rel = relocs; i < nb_relocs;
+ for (i = 0, ext_rel = coff_relocs, rel = relocs; i < nb_relocs;
i++, ext_rel++, rel++) {
memset(rel, 0, sizeof(*rel));
rel->r_reloc = ext_rel;
/* relocs */
struct relocation_info *relocs;
-
+
/* symbols */
EXE_SYM *symtab;
struct nlist *symtab_std;
static char *get_sym_name(EXE_SYM *sym)
{
char *name = find_str_by_index(sym->n_un.n_strx);
-
+
if ( sym->n_type & N_STAB ) /* Debug symbols are ignored */
return "debug";
-
+
if(!name)
return name;
if(name[0]=='_')
}
/* find a section index given its segname, sectname */
-static int find_mach_sec_index(struct section *section_hdr, int shnum, const char *segname,
+static int find_mach_sec_index(struct section *section_hdr, int shnum, const char *segname,
const char *sectname)
{
int i;
}
/* find a section header given its segname, sectname */
-struct section *find_mach_sec_hdr(struct section *section_hdr, int shnum, const char *segname,
+struct section *find_mach_sec_hdr(struct section *section_hdr, int shnum, const char *segname,
const char *sectname)
{
int index = find_mach_sec_index(section_hdr, shnum, segname, sectname);
static inline void fetch_next_pair_value(struct relocation_info * rel, unsigned int *value)
{
struct scattered_relocation_info * scarel;
-
+
if(R_SCATTERED & rel->r_address) {
scarel = (struct scattered_relocation_info*)rel;
if(scarel->r_type != PPC_RELOC_PAIR)
static const char * find_sym_with_value_and_sec_number( int value, int sectnum, int * offset )
{
int i, ret = -1;
-
+
for( i = 0 ; i < nb_syms; i++ )
{
if( !(symtab[i].n_type & N_STAB) && (symtab[i].n_type & N_SECT) &&
}
}
-/*
- * Find symbol name given a (virtual) address, and a section which is of type
+/*
+ * Find symbol name given a (virtual) address, and a section which is of type
* S_NON_LAZY_SYMBOL_POINTERS or S_LAZY_SYMBOL_POINTERS or S_SYMBOL_STUBS
*/
static const char * find_reloc_name_in_sec_ptr(int address, struct section * sec_hdr)
{
unsigned int tocindex, symindex, size;
const char *name = 0;
-
+
/* Sanity check */
if(!( address >= sec_hdr->addr && address < (sec_hdr->addr + sec_hdr->size) ) )
return (char*)0;
-
+
if( sec_hdr->flags & S_SYMBOL_STUBS ){
size = sec_hdr->reserved2;
if(size == 0)
error("size = 0");
-
+
}
else if( sec_hdr->flags & S_LAZY_SYMBOL_POINTERS ||
sec_hdr->flags & S_NON_LAZY_SYMBOL_POINTERS)
size = sizeof(unsigned long);
else
return 0;
-
+
/* Compute our index in toc */
tocindex = (address - sec_hdr->addr)/size;
symindex = tocdylib[sec_hdr->reserved1 + tocindex];
-
+
name = get_sym_name(&symtab[symindex]);
return name;
int sectnum = rel->r_symbolnum;
int sectoffset;
int other_half=0;
-
+
/* init the slide value */
*sslide = 0;
-
+
if(R_SCATTERED & rel->r_address)
return (char *)find_reloc_name_given_its_address(sca_rel->r_value);
if(rel->r_extern)
{
/* ignore debug sym */
- if ( symtab[rel->r_symbolnum].n_type & N_STAB )
+ if ( symtab[rel->r_symbolnum].n_type & N_STAB )
return 0;
return get_sym_name(&symtab[rel->r_symbolnum]);
}
/* Intruction contains an offset to the symbols pointed to, in the rel->r_symbolnum section */
sectoffset = *(uint32_t *)(text + rel->r_address) & 0xffff;
-
+
if(sectnum==0xffffff)
return 0;
switch(rel->r_type)
{
- case PPC_RELOC_LO16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset & 0xffff);
+ case PPC_RELOC_LO16: fetch_next_pair_value(rel+1, &other_half); sectoffset |= (other_half << 16);
break;
- case PPC_RELOC_HI16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (other_half & 0xffff);
+ case PPC_RELOC_HI16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) | (uint16_t)(other_half & 0xffff);
break;
- case PPC_RELOC_HA16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (other_half & 0xffff);
+ case PPC_RELOC_HA16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) + (int16_t)(other_half & 0xffff);
break;
case PPC_RELOC_BR24:
sectoffset = ( *(uint32_t *)(text + rel->r_address) & 0x03fffffc );
if(rel->r_pcrel)
sectoffset += rel->r_address;
-
+
if (rel->r_type == PPC_RELOC_BR24)
name = (char *)find_reloc_name_in_sec_ptr((int)sectoffset, §ion_hdr[sectnum-1]);
/* search it in the full symbol list, if not found */
if(!name)
name = (char *)find_sym_with_value_and_sec_number(sectoffset, sectnum, sslide);
-
+
return name;
}
unsigned int i, j;
EXE_SYM *sym;
struct nlist *syment;
-
+
fd = open(filename, O_RDONLY);
- if (fd < 0)
+ if (fd < 0)
error("can't open file '%s'", filename);
-
+
/* Read Mach header. */
if (read(fd, &mach_hdr, sizeof (mach_hdr)) != sizeof (mach_hdr))
error("unable to read file header");
if (!check_mach_header(mach_hdr)) {
error("bad Mach header");
}
-
+
if (mach_hdr.cputype != CPU_TYPE_POWERPC)
error("Unsupported CPU");
-
+
if (mach_hdr.filetype != MH_OBJECT)
error("Unsupported Mach Object");
-
+
/* read segment headers */
for(i=0, j=sizeof(mach_hdr); i<mach_hdr.ncmds ; i++)
{
/* read all section data */
sdata = (uint8_t **)malloc(sizeof(void *) * segment->nsects);
memset(sdata, 0, sizeof(void *) * segment->nsects);
-
+
/* Load the data in section data */
for(i = 0; i < segment->nsects; i++) {
sdata[i] = load_data(fd, section_hdr[i].offset, section_hdr[i].size);
}
-
+
/* text section */
text_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT);
i = find_mach_sec_index(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT);
if (i == -1 || !text_sec_hdr)
error("could not find __TEXT,__text section");
text = sdata[i];
-
+
/* Make sure dysym was loaded */
if(!(int)dysymtabcmd)
error("could not find __DYSYMTAB segment");
-
+
/* read the table of content of the indirect sym */
tocdylib = load_data( fd, dysymtabcmd->indirectsymoff, dysymtabcmd->nindirectsyms * sizeof(uint32_t) );
-
+
/* Make sure symtab was loaded */
if(!(int)symtabcmd)
error("could not find __SYMTAB segment");
symtab_std = load_data(fd, symtabcmd->symoff, symtabcmd->nsyms * sizeof(struct nlist));
strtab = load_data(fd, symtabcmd->stroff, symtabcmd->strsize);
-
+
symtab = malloc(sizeof(EXE_SYM) * nb_syms);
-
+
/* Now transform the symtab, to an extended version, with the sym size, and the C name */
for(i = 0, sym = symtab, syment = symtab_std; i < nb_syms; i++, sym++, syment++) {
- const char *name;
struct nlist *sym_follow, *sym_next = 0;
unsigned int j;
- name = find_str_by_index(sym->n_un.n_strx);
memset(sym, 0, sizeof(*sym));
-
- if ( sym->n_type & N_STAB ) /* Debug symbols are skipped */
+
+ if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */
continue;
-
+
memcpy(sym, syment, sizeof(*syment));
-
+
/* Find the following symbol in order to get the current symbol size */
for(j = 0, sym_follow = symtab_std; j < nb_syms; j++, sym_follow++) {
if ( sym_follow->n_sect != 1 || sym_follow->n_type & N_STAB || !(sym_follow->n_value > sym->st_value))
else
sym->st_size = text_sec_hdr->size - sym->st_value;
}
-
+
/* Find Reloc */
relocs = load_data(fd, text_sec_hdr->reloff, text_sec_hdr->nreloc * sizeof(struct relocation_info));
nb_relocs = text_sec_hdr->nreloc;
} else {
#ifdef HOST_SPARC
if (sym_name[0] == '.')
- snprintf(name, sizeof(name),
+ snprintf(name, name_size,
"(long)(&__dot_%s)",
sym_name + 1);
else
}
}
+#ifdef HOST_IA64
+
+#define PLT_ENTRY_SIZE 16 /* 1 bundle containing "brl" */
+
+struct plt_entry {
+ struct plt_entry *next;
+ const char *name;
+ unsigned long addend;
+} *plt_list;
+
+static int
+get_plt_index (const char *name, unsigned long addend)
+{
+ struct plt_entry *plt, *prev= NULL;
+ int index = 0;
+
+ /* see if we already have an entry for this target: */
+ for (plt = plt_list; plt; ++index, prev = plt, plt = plt->next)
+ if (strcmp(plt->name, name) == 0 && plt->addend == addend)
+ return index;
+
+ /* nope; create a new PLT entry: */
+
+ plt = malloc(sizeof(*plt));
+ if (!plt) {
+ perror("malloc");
+ exit(1);
+ }
+ memset(plt, 0, sizeof(*plt));
+ plt->name = strdup(name);
+ plt->addend = addend;
+
+ /* append to plt-list: */
+ if (prev)
+ prev->next = plt;
+ else
+ plt_list = plt;
+ return index;
+}
+
+#endif
+
#ifdef HOST_ARM
int arm_emit_ldr_info(const char *name, unsigned long start_offset,
{
uint8_t *p;
uint32_t insn;
- int offset, min_offset, pc_offset, data_size;
+ int offset, min_offset, pc_offset, data_size, spare, max_pool;
uint8_t data_allocated[1024];
unsigned int data_index;
-
+ int type;
+
memset(data_allocated, 0, sizeof(data_allocated));
-
+
p = p_start;
min_offset = p_end - p_start;
+ spare = 0x7fffffff;
while (p < p_start + min_offset) {
insn = get32((uint32_t *)p);
+ /* TODO: Armv5e ldrd. */
+ /* TODO: VFP load. */
if ((insn & 0x0d5f0000) == 0x051f0000) {
/* ldr reg, [pc, #im] */
offset = insn & 0xfff;
if (!(insn & 0x00800000))
- offset = -offset;
+ offset = -offset;
+ max_pool = 4096;
+ type = 0;
+ } else if ((insn & 0x0e5f0f00) == 0x0c1f0100) {
+ /* FPA ldf. */
+ offset = (insn & 0xff) << 2;
+ if (!(insn & 0x00800000))
+ offset = -offset;
+ max_pool = 1024;
+ type = 1;
+ } else if ((insn & 0x0fff0000) == 0x028f0000) {
+ /* Some gcc load a doubleword immediate with
+ add regN, pc, #imm
+ ldmia regN, {regN, regM}
+ Hope and pray the compiler never generates somethin like
+ add reg, pc, #imm1; ldr reg, [reg, #-imm2]; */
+ int r;
+
+ r = (insn & 0xf00) >> 7;
+ offset = ((insn & 0xff) >> r) | ((insn & 0xff) << (32 - r));
+ max_pool = 1024;
+ type = 2;
+ } else {
+ max_pool = 0;
+ type = -1;
+ }
+ if (type >= 0) {
+ /* PC-relative load needs fixing up. */
+ if (spare > max_pool - offset)
+ spare = max_pool - offset;
if ((offset & 3) !=0)
- error("%s:%04x: ldr pc offset must be 32 bit aligned",
+ error("%s:%04x: pc offset must be 32 bit aligned",
+ name, start_offset + p - p_start);
+ if (offset < 0)
+ error("%s:%04x: Embedded literal value",
name, start_offset + p - p_start);
pc_offset = p - p_start + offset + 8;
- if (pc_offset <= (p - p_start) ||
+ if (pc_offset <= (p - p_start) ||
pc_offset >= (p_end - p_start))
- error("%s:%04x: ldr pc offset must point inside the function code",
+ error("%s:%04x: pc offset must point inside the function code",
name, start_offset + p - p_start);
if (pc_offset < min_offset)
min_offset = pc_offset;
if (outfile) {
- /* ldr position */
- fprintf(outfile, " arm_ldr_ptr->ptr = gen_code_ptr + %d;\n",
+ /* The intruction position */
+ fprintf(outfile, " arm_ldr_ptr->ptr = gen_code_ptr + %d;\n",
p - p_start);
- /* ldr data index */
- data_index = ((p_end - p_start) - pc_offset - 4) >> 2;
- fprintf(outfile, " arm_ldr_ptr->data_ptr = arm_data_ptr + %d;\n",
+ /* The position of the constant pool data. */
+ data_index = ((p_end - p_start) - pc_offset) >> 2;
+ fprintf(outfile, " arm_ldr_ptr->data_ptr = arm_data_ptr - %d;\n",
data_index);
+ fprintf(outfile, " arm_ldr_ptr->type = %d;\n", type);
fprintf(outfile, " arm_ldr_ptr++;\n");
- if (data_index >= sizeof(data_allocated))
- error("%s: too many data", name);
- if (!data_allocated[data_index]) {
- ELF_RELOC *rel;
- int i, addend, type;
- const char *sym_name, *p;
- char relname[1024];
-
- data_allocated[data_index] = 1;
-
- /* data value */
- addend = get32((uint32_t *)(p_start + pc_offset));
- relname[0] = '\0';
- for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
- if (rel->r_offset == (pc_offset + start_offset)) {
- sym_name = get_rel_sym_name(rel);
- /* the compiler leave some unnecessary references to the code */
- get_reloc_expr(relname, sizeof(relname), sym_name);
- type = ELF32_R_TYPE(rel->r_info);
- if (type != R_ARM_ABS32)
- error("%s: unsupported data relocation", name);
- break;
- }
- }
- fprintf(outfile, " arm_data_ptr[%d] = 0x%x",
- data_index, addend);
- if (relname[0] != '\0')
- fprintf(outfile, " + %s", relname);
- fprintf(outfile, ";\n");
- }
}
}
p += 4;
}
+
+ /* Copy and relocate the constant pool data. */
data_size = (p_end - p_start) - min_offset;
if (data_size > 0 && outfile) {
- fprintf(outfile, " arm_data_ptr += %d;\n", data_size >> 2);
+ spare += min_offset;
+ fprintf(outfile, " arm_data_ptr -= %d;\n", data_size >> 2);
+ fprintf(outfile, " arm_pool_ptr -= %d;\n", data_size);
+ fprintf(outfile, " if (arm_pool_ptr > gen_code_ptr + %d)\n"
+ " arm_pool_ptr = gen_code_ptr + %d;\n",
+ spare, spare);
+
+ data_index = 0;
+ for (pc_offset = min_offset;
+ pc_offset < p_end - p_start;
+ pc_offset += 4) {
+
+ ELF_RELOC *rel;
+ int i, addend, type;
+ const char *sym_name;
+ char relname[1024];
+
+ /* data value */
+ addend = get32((uint32_t *)(p_start + pc_offset));
+ relname[0] = '\0';
+ for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
+ if (rel->r_offset == (pc_offset + start_offset)) {
+ sym_name = get_rel_sym_name(rel);
+ /* the compiler leave some unnecessary references to the code */
+ get_reloc_expr(relname, sizeof(relname), sym_name);
+ type = ELF32_R_TYPE(rel->r_info);
+ if (type != R_ARM_ABS32)
+ error("%s: unsupported data relocation", name);
+ break;
+ }
+ }
+ fprintf(outfile, " arm_data_ptr[%d] = 0x%x",
+ data_index, addend);
+ if (relname[0] != '\0')
+ fprintf(outfile, " + %s", relname);
+ fprintf(outfile, ";\n");
+
+ data_index++;
+ }
}
- /* the last instruction must be a mov pc, lr */
if (p == p_start)
goto arm_ret_error;
p -= 4;
insn = get32((uint32_t *)p);
- if ((insn & 0xffff0000) != 0xe91b0000) {
+ /* The last instruction must be an ldm instruction. There are several
+ forms generated by gcc:
+ ldmib sp, {..., pc} (implies a sp adjustment of +4)
+ ldmia sp, {..., pc}
+ ldmea fp, {..., pc} */
+ if ((insn & 0xffff8000) == 0xe99d8000) {
+ if (outfile) {
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = 0xe28dd004;\n",
+ p - p_start);
+ }
+ p += 4;
+ } else if ((insn & 0xffff8000) != 0xe89d8000
+ && (insn & 0xffff8000) != 0xe91b8000) {
arm_ret_error:
if (!outfile)
printf("%s: invalid epilog\n", name);
}
- return p - p_start;
+ return p - p_start;
}
#endif
#define MAX_ARGS 3
/* generate op code */
-void gen_code(const char *name, host_ulong offset, host_ulong size,
+void gen_code(const char *name, host_ulong offset, host_ulong size,
FILE *outfile, int gen_switch)
{
int copy_size = 0;
}
copy_size = len;
}
-#endif
+#endif
#elif defined(HOST_PPC)
{
uint8_t *p;
#endif
if (get32((uint32_t *)p) != 0x6bfa8001)
error("ret expected at the end of %s", name);
- copy_size = p - p_start;
+ copy_size = p - p_start;
}
#elif defined(HOST_IA64)
{
/* 08 00 84 00 */
if (get32((uint32_t *)p) != 0x00840008)
error("br.ret.sptk.many b0;; expected at the end of %s", name);
- copy_size = p - p_start;
+ copy_size = p_end - p_start;
}
#elif defined(HOST_SPARC)
{
+#define INSN_SAVE 0x9de3a000
+#define INSN_RET 0x81c7e008
+#define INSN_RETL 0x81c3e008
+#define INSN_RESTORE 0x81e80000
+#define INSN_RETURN 0x81cfe008
+#define INSN_NOP 0x01000000
+#define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp
+#define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp
+
uint32_t start_insn, end_insn1, end_insn2;
uint8_t *p;
p = (void *)(p_end - 8);
start_insn = get32((uint32_t *)(p_start + 0x0));
end_insn1 = get32((uint32_t *)(p + 0x0));
end_insn2 = get32((uint32_t *)(p + 0x4));
- if ((start_insn & ~0x1fff) == 0x9de3a000) {
+ if (((start_insn & ~0x1fff) == INSN_SAVE) ||
+ (start_insn & ~0x1fff) == INSN_ADD_SP) {
p_start += 0x4;
start_offset += 0x4;
- if ((int)(start_insn | ~0x1fff) < -128)
- error("Found bogus save at the start of %s", name);
- if (end_insn1 != 0x81c7e008 || end_insn2 != 0x81e80000)
+ if (end_insn1 == INSN_RET && end_insn2 == INSN_RESTORE)
+ /* SPARC v7: ret; restore; */ ;
+ else if (end_insn1 == INSN_RETURN && end_insn2 == INSN_NOP)
+ /* SPARC v9: return; nop; */ ;
+ else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP)
+ /* SPARC v7: retl; sub %sp, nn, %sp; */ ;
+ else
+
error("ret; restore; not found at end of %s", name);
+ } else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) {
+ ;
} else {
error("No save at the beginning of %s", name);
}
/* Skip a preceeding nop, if present. */
if (p > p_start) {
skip_insn = get32((uint32_t *)(p - 0x4));
- if (skip_insn == 0x01000000)
+ if (skip_insn == INSN_NOP)
p -= 4;
}
#endif
}
#elif defined(HOST_SPARC64)
{
+#define INSN_SAVE 0x9de3a000
+#define INSN_RET 0x81c7e008
+#define INSN_RETL 0x81c3e008
+#define INSN_RESTORE 0x81e80000
+#define INSN_RETURN 0x81cfe008
+#define INSN_NOP 0x01000000
+#define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp
+#define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp
+
uint32_t start_insn, end_insn1, end_insn2, skip_insn;
uint8_t *p;
p = (void *)(p_end - 8);
+#if 0
+ /* XXX: check why it occurs */
if (p <= p_start)
error("empty code for %s", name);
+#endif
start_insn = get32((uint32_t *)(p_start + 0x0));
end_insn1 = get32((uint32_t *)(p + 0x0));
end_insn2 = get32((uint32_t *)(p + 0x4));
- if ((start_insn & ~0x1fff) == 0x9de3a000) {
+ if (((start_insn & ~0x1fff) == INSN_SAVE) ||
+ (start_insn & ~0x1fff) == INSN_ADD_SP) {
p_start += 0x4;
start_offset += 0x4;
- if ((int)(start_insn | ~0x1fff) < -256)
- error("Found bogus save at the start of %s", name);
- if (end_insn1 != 0x81c7e008 || end_insn2 != 0x81e80000)
+ if (end_insn1 == INSN_RET && end_insn2 == INSN_RESTORE)
+ /* SPARC v7: ret; restore; */ ;
+ else if (end_insn1 == INSN_RETURN && end_insn2 == INSN_NOP)
+ /* SPARC v9: return; nop; */ ;
+ else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP)
+ /* SPARC v7: retl; sub %sp, nn, %sp; */ ;
+ else
+
error("ret; restore; not found at end of %s", name);
+ } else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) {
+ ;
} else {
error("No save at the beginning of %s", name);
}
-
+
/* Skip a preceeding nop, if present. */
if (p > p_start) {
skip_insn = get32((uint32_t *)(p - 0x4));
if (skip_insn == 0x01000000)
p -= 4;
}
-
+
copy_size = p - p_start;
}
#elif defined(HOST_ARM)
{
+ uint32_t insn;
+
if ((p_end - p_start) <= 16)
error("%s: function too small", name);
if (get32((uint32_t *)p_start) != 0xe1a0c00d ||
error("%s: invalid prolog", name);
p_start += 12;
start_offset += 12;
- copy_size = arm_emit_ldr_info(name, start_offset, NULL, p_start, p_end,
+ insn = get32((uint32_t *)p_start);
+ if ((insn & 0xffffff00) == 0xe24dd000) {
+ /* Stack adjustment. Assume op uses the frame pointer. */
+ p_start -= 4;
+ start_offset -= 4;
+ }
+ copy_size = arm_emit_ldr_info(name, start_offset, NULL, p_start, p_end,
relocs, nb_relocs);
}
#elif defined(HOST_M68K)
error("empty code for %s", name);
// remove NOP's, probably added for alignment
while ((get16((uint16_t *)p) == 0x4e71) &&
- (p>p_start))
+ (p>p_start))
p -= 2;
if (get16((uint16_t *)p) != 0x4e75)
error("rts expected at the end of %s", name);
copy_size = p - p_start;
}
+#elif defined(HOST_MIPS) || defined(HOST_MIPS64)
+ {
+#define INSN_RETURN 0x03e00008
+#define INSN_NOP 0x00000000
+
+ uint8_t *p = p_end;
+
+ if (p < (p_start + 0x8)) {
+ error("empty code for %s", name);
+ } else {
+ uint32_t end_insn1, end_insn2;
+
+ p -= 0x8;
+ end_insn1 = get32((uint32_t *)(p + 0x0));
+ end_insn2 = get32((uint32_t *)(p + 0x4));
+ if (end_insn1 != INSN_RETURN && end_insn2 != INSN_NOP)
+ error("jr ra not found at end of %s", name);
+ }
+ copy_size = p - p_start;
+ }
#else
#error unsupported CPU
#endif
}
}
}
-
+
nb_args = 0;
while (nb_args < MAX_ARGS && args_present[nb_args])
nb_args++;
}
fprintf(outfile, ";\n");
}
+#if defined(HOST_IA64)
+ fprintf(outfile, " extern char %s;\n", name);
+#else
fprintf(outfile, " extern void %s();\n", name);
+#endif
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
host_ulong offset = get_rel_offset(rel);
sym_name = get_rel_sym_name(rel);
if(!sym_name)
continue;
- if (*sym_name &&
+ if (*sym_name &&
!strstart(sym_name, "__op_param", NULL) &&
!strstart(sym_name, "__op_jmp", NULL) &&
!strstart(sym_name, "__op_gen_label", NULL)) {
continue;
}
#endif
-#ifdef __APPLE__
-/* set __attribute((unused)) on darwin because we wan't to avoid warning when we don't use the symbol */
- fprintf(outfile, "extern char %s __attribute__((unused));\n", sym_name);
+#if defined(__APPLE__)
+ /* Set __attribute((unused)) on darwin because we
+ want to avoid warning when we don't use the symbol. */
+ fprintf(outfile, " extern char %s __attribute__((unused));\n", sym_name);
+#elif defined(HOST_IA64)
+ if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
+ /*
+ * PCREL21 br.call targets generally
+ * are out of range and need to go
+ * through an "import stub".
+ */
+ fprintf(outfile, " extern char %s;\n",
+ sym_name);
#else
fprintf(outfile, "extern char %s;\n", sym_name);
#endif
{
EXE_SYM *sym;
const char *sym_name, *p;
- unsigned long val;
+ host_ulong val;
int n;
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
if (strstart(sym_name, "__op_label", &p)) {
uint8_t *ptr;
unsigned long offset;
-
+
/* test if the variable refers to a label inside
the code we are generating */
#ifdef CONFIG_FORMAT_COFF
#ifdef CONFIG_FORMAT_MACH
offset -= section_hdr[sym->n_sect-1].addr;
#endif
- val = *(unsigned long *)(ptr + offset);
+ val = *(host_ulong *)(ptr + offset);
#ifdef ELF_USES_RELOCA
{
int reloc_shndx, nb_relocs1, j;
/* try to find a matching relocation */
reloc_shndx = find_reloc(sym->st_shndx);
if (reloc_shndx) {
- nb_relocs1 = shdr[reloc_shndx].sh_size /
+ nb_relocs1 = shdr[reloc_shndx].sh_size /
shdr[reloc_shndx].sh_entsize;
rel = (ELF_RELOC *)sdata[reloc_shndx];
for(j = 0; j < nb_relocs1; j++) {
}
}
}
-#endif
+#endif
if (val >= start_offset && val <= start_offset + copy_size) {
n = strtol(p, NULL, 10);
- fprintf(outfile, " label_offsets[%d] = %ld + (gen_code_ptr - gen_code_buf);\n", n, val - start_offset);
+ fprintf(outfile, " label_offsets[%d] = %ld + (gen_code_ptr - gen_code_buf);\n", n, (long)(val - start_offset));
}
}
}
}
- /* load parameres in variables */
+ /* load parameters in variables */
for(i = 0; i < nb_args; i++) {
fprintf(outfile, " param%d = *opparam_ptr++;\n", i + 1);
}
/* patch relocations */
#if defined(HOST_I386)
{
- char name[256];
+ char relname[256];
int type;
int addend;
+ int reloc_offset;
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
if (rel->r_offset >= start_offset &&
rel->r_offset < start_offset + copy_size) {
sym_name = get_rel_sym_name(rel);
+ if (!sym_name)
+ continue;
+ reloc_offset = rel->r_offset - start_offset;
if (strstart(sym_name, "__op_jmp", &p)) {
int n;
n = strtol(p, NULL, 10);
chaining: the offset of the instruction
needs to be stored */
fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
- n, rel->r_offset - start_offset);
+ n, reloc_offset);
continue;
}
-
- get_reloc_expr(name, sizeof(name), sym_name);
+
+ get_reloc_expr(relname, sizeof(relname), sym_name);
addend = get32((uint32_t *)(text + rel->r_offset));
#ifdef CONFIG_FORMAT_ELF
type = ELF32_R_TYPE(rel->r_info);
switch(type) {
case R_386_32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
+ reloc_offset, relname, addend);
break;
case R_386_PC32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n",
- rel->r_offset - start_offset, name, rel->r_offset - start_offset, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n",
+ reloc_offset, relname, reloc_offset, addend);
break;
default:
error("unsupported i386 relocation (%d)", type);
type = rel->r_type;
switch(type) {
case DIR32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
+ reloc_offset, relname, addend);
break;
case DISP32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d -4;\n",
- rel->r_offset - start_offset, name, rel->r_offset - start_offset, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d -4;\n",
+ reloc_offset, relname, reloc_offset, addend);
break;
default:
error("unsupported i386 relocation (%d)", type);
}
#elif defined(HOST_X86_64)
{
- char name[256];
+ char relname[256];
int type;
int addend;
+ int reloc_offset;
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
if (rel->r_offset >= start_offset &&
rel->r_offset < start_offset + copy_size) {
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
- get_reloc_expr(name, sizeof(name), sym_name);
+ get_reloc_expr(relname, sizeof(relname), sym_name);
type = ELF32_R_TYPE(rel->r_info);
addend = rel->r_addend;
+ reloc_offset = rel->r_offset - start_offset;
switch(type) {
case R_X86_64_32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (uint32_t)%s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (uint32_t)%s + %d;\n",
+ reloc_offset, relname, addend);
break;
case R_X86_64_32S:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (int32_t)%s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (int32_t)%s + %d;\n",
+ reloc_offset, relname, addend);
break;
case R_X86_64_PC32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n",
- rel->r_offset - start_offset, name, rel->r_offset - start_offset, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n",
+ reloc_offset, relname, reloc_offset, addend);
break;
default:
error("unsupported X86_64 relocation (%d)", type);
#elif defined(HOST_PPC)
{
#ifdef CONFIG_FORMAT_ELF
- char name[256];
+ char relname[256];
int type;
int addend;
+ int reloc_offset;
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
if (rel->r_offset >= start_offset &&
rel->r_offset < start_offset + copy_size) {
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
+ reloc_offset = rel->r_offset - start_offset;
if (strstart(sym_name, "__op_jmp", &p)) {
int n;
n = strtol(p, NULL, 10);
chaining: the offset of the instruction
needs to be stored */
fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
- n, rel->r_offset - start_offset);
+ n, reloc_offset);
continue;
}
-
- get_reloc_expr(name, sizeof(name), sym_name);
+
+ get_reloc_expr(relname, sizeof(relname), sym_name);
type = ELF32_R_TYPE(rel->r_info);
addend = rel->r_addend;
switch(type) {
case R_PPC_ADDR32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
+ reloc_offset, relname, addend);
break;
case R_PPC_ADDR16_LO:
- fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d);\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d);\n",
+ reloc_offset, relname, addend);
break;
case R_PPC_ADDR16_HI:
- fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d) >> 16;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d) >> 16;\n",
+ reloc_offset, relname, addend);
break;
case R_PPC_ADDR16_HA:
- fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d + 0x8000) >> 16;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d + 0x8000) >> 16;\n",
+ reloc_offset, relname, addend);
break;
case R_PPC_REL24:
/* warning: must be at 32 MB distancy */
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((%s - (long)(gen_code_ptr + %d) + %d) & 0x03fffffc);\n",
- rel->r_offset - start_offset, rel->r_offset - start_offset, name, rel->r_offset - start_offset, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((%s - (long)(gen_code_ptr + %d) + %d) & 0x03fffffc);\n",
+ reloc_offset, reloc_offset, relname, reloc_offset, addend);
break;
default:
error("unsupported powerpc relocation (%d)", type);
}
}
#elif defined(CONFIG_FORMAT_MACH)
- struct scattered_relocation_info *scarel;
- struct relocation_info * rel;
- char final_sym_name[256];
- const char *sym_name;
- const char *p;
- int slide, sslide;
- int i;
-
- for(i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
- unsigned int offset, length, value = 0;
- unsigned int type, pcrel, isym = 0;
- unsigned int usesym = 0;
-
- if(R_SCATTERED & rel->r_address) {
- scarel = (struct scattered_relocation_info*)rel;
- offset = (unsigned int)scarel->r_address;
- length = scarel->r_length;
- pcrel = scarel->r_pcrel;
- type = scarel->r_type;
- value = scarel->r_value;
- } else {
- value = isym = rel->r_symbolnum;
- usesym = (rel->r_extern);
- offset = rel->r_address;
- length = rel->r_length;
- pcrel = rel->r_pcrel;
- type = rel->r_type;
- }
-
- slide = offset - start_offset;
-
- if (!(offset >= start_offset && offset < start_offset + size))
- continue; /* not in our range */
-
- sym_name = get_reloc_name(rel, &sslide);
-
- if(usesym && symtab[isym].n_type & N_STAB)
- continue; /* don't handle STAB (debug sym) */
-
- if (sym_name && strstart(sym_name, "__op_jmp", &p)) {
- int n;
- n = strtol(p, NULL, 10);
- fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
- n, slide);
- continue; /* Nothing more to do */
- }
-
- if(!sym_name)
- {
- fprintf(outfile, "/* #warning relocation not handled in %s (value 0x%x, %s, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
- name, value, usesym ? "use sym" : "don't use sym", offset, length, pcrel ? "pcrel":"", type);
- continue; /* dunno how to handle without final_sym_name */
- }
-
- get_reloc_expr(final_sym_name, sizeof(final_sym_name),
- sym_name);
- switch(type) {
- case PPC_RELOC_BR24:
- fprintf(outfile, "{\n");
- fprintf(outfile, " uint32_t imm = *(uint32_t *)(gen_code_ptr + %d) & 0x3fffffc;\n", slide);
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((imm + ((long)%s - (long)gen_code_ptr) + %d) & 0x03fffffc);\n",
- slide, slide, name, sslide );
- fprintf(outfile, "}\n");
- break;
- case PPC_RELOC_HI16:
- fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d) >> 16;\n",
- slide, final_sym_name, sslide);
- break;
- case PPC_RELOC_LO16:
- fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d);\n",
- slide, final_sym_name, sslide);
+ struct scattered_relocation_info *scarel;
+ struct relocation_info * rel;
+ char final_sym_name[256];
+ const char *sym_name;
+ const char *p;
+ int slide, sslide;
+ int i;
+
+ for(i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
+ unsigned int offset, length, value = 0;
+ unsigned int type, pcrel, isym = 0;
+ unsigned int usesym = 0;
+
+ if(R_SCATTERED & rel->r_address) {
+ scarel = (struct scattered_relocation_info*)rel;
+ offset = (unsigned int)scarel->r_address;
+ length = scarel->r_length;
+ pcrel = scarel->r_pcrel;
+ type = scarel->r_type;
+ value = scarel->r_value;
+ } else {
+ value = isym = rel->r_symbolnum;
+ usesym = (rel->r_extern);
+ offset = rel->r_address;
+ length = rel->r_length;
+ pcrel = rel->r_pcrel;
+ type = rel->r_type;
+ }
+
+ slide = offset - start_offset;
+
+ if (!(offset >= start_offset && offset < start_offset + size))
+ continue; /* not in our range */
+
+ sym_name = get_reloc_name(rel, &sslide);
+
+ if(usesym && symtab[isym].n_type & N_STAB)
+ continue; /* don't handle STAB (debug sym) */
+
+ if (sym_name && strstart(sym_name, "__op_jmp", &p)) {
+ int n;
+ n = strtol(p, NULL, 10);
+ fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n",
+ n, slide);
+ continue; /* Nothing more to do */
+ }
+
+ if(!sym_name) {
+ fprintf(outfile, "/* #warning relocation not handled in %s (value 0x%x, %s, offset 0x%x, length 0x%x, %s, type 0x%x) */\n",
+ name, value, usesym ? "use sym" : "don't use sym", offset, length, pcrel ? "pcrel":"", type);
+ continue; /* dunno how to handle without final_sym_name */
+ }
+
+ get_reloc_expr(final_sym_name, sizeof(final_sym_name),
+ sym_name);
+ switch(type) {
+ case PPC_RELOC_BR24:
+ if (!strstart(sym_name,"__op_gen_label",&p)) {
+ fprintf(outfile, "{\n");
+ fprintf(outfile, " uint32_t imm = *(uint32_t *)(gen_code_ptr + %d) & 0x3fffffc;\n", slide);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((imm + ((long)%s - (long)gen_code_ptr) + %d) & 0x03fffffc);\n",
+ slide, slide, name, sslide);
+ fprintf(outfile, "}\n");
+ } else {
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | (((long)%s - (long)gen_code_ptr - %d) & 0x03fffffc);\n",
+ slide, slide, final_sym_name, slide);
+ }
break;
- case PPC_RELOC_HA16:
- fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d + 0x8000) >> 16;\n",
- slide, final_sym_name, sslide);
- break;
- default:
- error("unsupported powerpc relocation (%d)", type);
- }
- }
+ case PPC_RELOC_HI16:
+ fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d) >> 16;\n",
+ slide, final_sym_name, sslide);
+ break;
+ case PPC_RELOC_LO16:
+ fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d);\n",
+ slide, final_sym_name, sslide);
+ break;
+ case PPC_RELOC_HA16:
+ fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d + 0x8000) >> 16;\n",
+ slide, final_sym_name, sslide);
+ break;
+ default:
+ error("unsupported powerpc relocation (%d)", type);
+ }
+ }
#else
#error unsupport object format
#endif
}
#elif defined(HOST_S390)
{
- char name[256];
+ char relname[256];
int type;
int addend;
+ int reloc_offset;
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
if (rel->r_offset >= start_offset &&
rel->r_offset < start_offset + copy_size) {
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
- get_reloc_expr(name, sizeof(name), sym_name);
+ get_reloc_expr(relname, sizeof(relname), sym_name);
type = ELF32_R_TYPE(rel->r_info);
addend = rel->r_addend;
+ reloc_offset = rel->r_offset - start_offset;
switch(type) {
case R_390_32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
+ reloc_offset, relname, addend);
break;
case R_390_16:
- fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = %s + %d;\n",
+ reloc_offset, relname, addend);
break;
case R_390_8:
- fprintf(outfile, " *(uint8_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint8_t *)(gen_code_ptr + %d) = %s + %d;\n",
+ reloc_offset, relname, addend);
break;
default:
error("unsupported s390 relocation (%d)", type);
for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
int type;
+ long reloc_offset;
type = ELF64_R_TYPE(rel->r_info);
sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
+ reloc_offset = rel->r_offset - start_offset;
switch (type) {
case R_ALPHA_GPDISP:
/* The gp is just 32 bit, and never changes, so it's easiest to emit it
as an immediate instead of constructing it from the pv or ra. */
fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, gp);\n",
- rel->r_offset - start_offset);
+ reloc_offset);
fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, gp);\n",
- rel->r_offset - start_offset + rel->r_addend);
+ reloc_offset + (int)rel->r_addend);
break;
case R_ALPHA_LITUSE:
/* jsr to literal hint. Could be used to optimize to bsr. Ignore for
special treatment. */
if (strstart(sym_name, "__op_param", &p))
fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, param%s);\n",
- rel->r_offset - start_offset, p);
+ reloc_offset, p);
break;
case R_ALPHA_GPRELLOW:
if (strstart(sym_name, "__op_param", &p))
fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, param%s);\n",
- rel->r_offset - start_offset, p);
+ reloc_offset, p);
break;
case R_ALPHA_BRSGP:
/* PC-relative jump. Tweak offset to skip the two instructions that try to
set up the gp from the pv. */
fprintf(outfile, " fix_bsr(gen_code_ptr + %ld, (uint8_t *) &%s - (gen_code_ptr + %ld + 4) + 8);\n",
- rel->r_offset - start_offset, sym_name, rel->r_offset - start_offset);
+ reloc_offset, sym_name, reloc_offset);
break;
default:
error("unsupported Alpha relocation (%d)", type);
}
#elif defined(HOST_IA64)
{
- char name[256];
+ unsigned long sym_idx;
+ long code_offset;
+ char relname[256];
int type;
- int addend;
+ long addend;
+
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
- if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
- sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
- get_reloc_expr(name, sizeof(name), sym_name);
- type = ELF64_R_TYPE(rel->r_info);
- addend = rel->r_addend;
- switch(type) {
- case R_IA64_LTOFF22:
- error("must implemnt R_IA64_LTOFF22 relocation");
- case R_IA64_PCREL21B:
- error("must implemnt R_IA64_PCREL21B relocation");
- default:
- error("unsupported ia64 relocation (%d)", type);
- }
- }
+ sym_idx = ELF64_R_SYM(rel->r_info);
+ if (rel->r_offset < start_offset
+ || rel->r_offset >= start_offset + copy_size)
+ continue;
+ sym_name = (strtab + symtab[sym_idx].st_name);
+ code_offset = rel->r_offset - start_offset;
+ if (strstart(sym_name, "__op_jmp", &p)) {
+ int n;
+ n = strtol(p, NULL, 10);
+ /* __op_jmp relocations are done at
+ runtime to do translated block
+ chaining: the offset of the instruction
+ needs to be stored */
+ fprintf(outfile, " jmp_offsets[%d] ="
+ "%ld + (gen_code_ptr - gen_code_buf);\n",
+ n, code_offset);
+ continue;
+ }
+ get_reloc_expr(relname, sizeof(relname), sym_name);
+ type = ELF64_R_TYPE(rel->r_info);
+ addend = rel->r_addend;
+ switch(type) {
+ case R_IA64_IMM64:
+ fprintf(outfile,
+ " ia64_imm64(gen_code_ptr + %ld, "
+ "%s + %ld);\n",
+ code_offset, relname, addend);
+ break;
+ case R_IA64_LTOFF22X:
+ case R_IA64_LTOFF22:
+ fprintf(outfile, " IA64_LTOFF(gen_code_ptr + %ld,"
+ " %s + %ld, %d);\n",
+ code_offset, relname, addend,
+ (type == R_IA64_LTOFF22X));
+ break;
+ case R_IA64_LDXMOV:
+ fprintf(outfile,
+ " ia64_ldxmov(gen_code_ptr + %ld,"
+ " %s + %ld);\n", code_offset, relname, addend);
+ break;
+
+ case R_IA64_PCREL21B:
+ if (strstart(sym_name, "__op_gen_label", NULL)) {
+ fprintf(outfile,
+ " ia64_imm21b(gen_code_ptr + %ld,"
+ " (long) (%s + %ld -\n\t\t"
+ "((long) gen_code_ptr + %ld)) >> 4);\n",
+ code_offset, relname, addend,
+ code_offset & ~0xfUL);
+ } else {
+ fprintf(outfile,
+ " IA64_PLT(gen_code_ptr + %ld, "
+ "%d);\t/* %s + %ld */\n",
+ code_offset,
+ get_plt_index(sym_name, addend),
+ sym_name, addend);
+ }
+ break;
+ default:
+ error("unsupported ia64 relocation (0x%x)",
+ type);
+ }
}
+ fprintf(outfile, " ia64_nop_b(gen_code_ptr + %d);\n",
+ copy_size - 16 + 2);
}
#elif defined(HOST_SPARC)
{
- char name[256];
+ char relname[256];
int type;
int addend;
+ int reloc_offset;
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
if (rel->r_offset >= start_offset &&
rel->r_offset < start_offset + copy_size) {
sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
- get_reloc_expr(name, sizeof(name), sym_name);
+ get_reloc_expr(relname, sizeof(relname), sym_name);
type = ELF32_R_TYPE(rel->r_info);
addend = rel->r_addend;
+ reloc_offset = rel->r_offset - start_offset;
switch(type) {
case R_SPARC_32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
+ reloc_offset, relname, addend);
break;
case R_SPARC_HI22:
fprintf(outfile,
"((*(uint32_t *)(gen_code_ptr + %d)) "
" & ~0x3fffff) "
" | (((%s + %d) >> 10) & 0x3fffff);\n",
- rel->r_offset - start_offset,
- rel->r_offset - start_offset,
- name, addend);
+ reloc_offset, reloc_offset, relname, addend);
break;
case R_SPARC_LO10:
fprintf(outfile,
"((*(uint32_t *)(gen_code_ptr + %d)) "
" & ~0x3ff) "
" | ((%s + %d) & 0x3ff);\n",
- rel->r_offset - start_offset,
- rel->r_offset - start_offset,
- name, addend);
+ reloc_offset, reloc_offset, relname, addend);
break;
case R_SPARC_WDISP30:
fprintf(outfile,
" & ~0x3fffffff) "
" | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
" & 0x3fffffff);\n",
- rel->r_offset - start_offset,
- rel->r_offset - start_offset,
- name, addend,
- rel->r_offset - start_offset);
+ reloc_offset, reloc_offset, relname, addend,
+ reloc_offset);
break;
+ case R_SPARC_WDISP22:
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x3fffff) "
+ " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
+ " & 0x3fffff);\n",
+ rel->r_offset - start_offset,
+ rel->r_offset - start_offset,
+ relname, addend,
+ rel->r_offset - start_offset);
+ break;
default:
error("unsupported sparc relocation (%d)", type);
}
}
#elif defined(HOST_SPARC64)
{
- char name[256];
+ char relname[256];
int type;
int addend;
+ int reloc_offset;
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
if (rel->r_offset >= start_offset &&
rel->r_offset < start_offset + copy_size) {
sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
- get_reloc_expr(name, sizeof(name), sym_name);
- type = ELF64_R_TYPE(rel->r_info);
+ get_reloc_expr(relname, sizeof(relname), sym_name);
+ type = ELF32_R_TYPE(rel->r_info);
addend = rel->r_addend;
+ reloc_offset = rel->r_offset - start_offset;
switch(type) {
case R_SPARC_32:
fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ reloc_offset, relname, addend);
break;
case R_SPARC_HI22:
fprintf(outfile,
"((*(uint32_t *)(gen_code_ptr + %d)) "
" & ~0x3fffff) "
" | (((%s + %d) >> 10) & 0x3fffff);\n",
- rel->r_offset - start_offset,
- rel->r_offset - start_offset,
- name, addend);
+ reloc_offset, reloc_offset, relname, addend);
break;
case R_SPARC_LO10:
fprintf(outfile,
"((*(uint32_t *)(gen_code_ptr + %d)) "
" & ~0x3ff) "
" | ((%s + %d) & 0x3ff);\n",
- rel->r_offset - start_offset,
- rel->r_offset - start_offset,
- name, addend);
+ reloc_offset, reloc_offset, relname, addend);
+ break;
+ case R_SPARC_OLO10:
+ addend += ELF64_R_TYPE_DATA (rel->r_info);
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x3ff) "
+ " | ((%s + %d) & 0x3ff);\n",
+ reloc_offset, reloc_offset, relname, addend);
break;
case R_SPARC_WDISP30:
fprintf(outfile,
" & ~0x3fffffff) "
" | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
" & 0x3fffffff);\n",
- rel->r_offset - start_offset,
- rel->r_offset - start_offset,
- name, addend,
- rel->r_offset - start_offset);
+ reloc_offset, reloc_offset, relname, addend,
+ reloc_offset);
+ break;
+ case R_SPARC_WDISP22:
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x3fffff) "
+ " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) "
+ " & 0x3fffff);\n",
+ reloc_offset, reloc_offset, relname, addend,
+ reloc_offset);
+ break;
+ case R_SPARC_HH22:
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x00000000) "
+ " | (((%s + %d) >> 42) & 0x00000000);\n",
+ reloc_offset, reloc_offset, relname, addend);
+ break;
+
+ case R_SPARC_LM22:
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x00000000) "
+ " | (((%s + %d) >> 10) & 0x00000000);\n",
+ reloc_offset, reloc_offset, relname, addend);
break;
+
+ case R_SPARC_HM10:
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + %d) = "
+ "((*(uint32_t *)(gen_code_ptr + %d)) "
+ " & ~0x00000000) "
+ " | ((((%s + %d) >> 32 & 0x3ff)) & 0x00000000);\n",
+ reloc_offset, reloc_offset, relname, addend);
+ break;
+
default:
- error("unsupported sparc64 relocation (%d)", type);
+ error("unsupported sparc64 relocation (%d) for symbol %s", type, relname);
}
}
}
}
#elif defined(HOST_ARM)
{
- char name[256];
+ char relname[256];
int type;
int addend;
-
- arm_emit_ldr_info(name, start_offset, outfile, p_start, p_end,
+ int reloc_offset;
+ uint32_t insn;
+
+ insn = get32((uint32_t *)(p_start + 4));
+ /* If prologue ends in sub sp, sp, #const then assume
+ op has a stack frame and needs the frame pointer. */
+ if ((insn & 0xffffff00) == 0xe24dd000) {
+ int i;
+ uint32_t opcode;
+ opcode = 0xe28db000; /* add fp, sp, #0. */
+#if 0
+/* ??? Need to undo the extra stack adjustment at the end of the op.
+ For now just leave the stack misaligned and hope it doesn't break anything
+ too important. */
+ if ((insn & 4) != 0) {
+ /* Preserve doubleword stack alignment. */
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + 4)= 0x%x;\n",
+ insn + 4);
+ opcode -= 4;
+ }
+#endif
+ insn = get32((uint32_t *)(p_start - 4));
+ /* Calculate the size of the saved registers,
+ excluding pc. */
+ for (i = 0; i < 15; i++) {
+ if (insn & (1 << i))
+ opcode += 4;
+ }
+ fprintf(outfile,
+ " *(uint32_t *)gen_code_ptr = 0x%x;\n", opcode);
+ }
+ arm_emit_ldr_info(relname, start_offset, outfile, p_start, p_end,
relocs, nb_relocs);
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
/* the compiler leave some unnecessary references to the code */
if (sym_name[0] == '\0')
continue;
- get_reloc_expr(name, sizeof(name), sym_name);
+ get_reloc_expr(relname, sizeof(relname), sym_name);
type = ELF32_R_TYPE(rel->r_info);
addend = get32((uint32_t *)(text + rel->r_offset));
+ reloc_offset = rel->r_offset - start_offset;
switch(type) {
case R_ARM_ABS32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
- rel->r_offset - start_offset, name, addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
+ reloc_offset, relname, addend);
break;
case R_ARM_PC24:
- fprintf(outfile, " arm_reloc_pc24((uint32_t *)(gen_code_ptr + %d), 0x%x, %s);\n",
- rel->r_offset - start_offset, addend, name);
+ case R_ARM_JUMP24:
+ case R_ARM_CALL:
+ fprintf(outfile, " arm_reloc_pc24((uint32_t *)(gen_code_ptr + %d), 0x%x, %s);\n",
+ reloc_offset, addend, relname);
break;
default:
error("unsupported arm relocation (%d)", type);
}
#elif defined(HOST_M68K)
{
- char name[256];
+ char relname[256];
int type;
int addend;
+ int reloc_offset;
Elf32_Sym *sym;
for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
if (rel->r_offset >= start_offset &&
rel->r_offset < start_offset + copy_size) {
sym = &(symtab[ELFW(R_SYM)(rel->r_info)]);
sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
- get_reloc_expr(name, sizeof(name), sym_name);
+ get_reloc_expr(relname, sizeof(relname), sym_name);
type = ELF32_R_TYPE(rel->r_info);
addend = get32((uint32_t *)(text + rel->r_offset)) + rel->r_addend;
+ reloc_offset = rel->r_offset - start_offset;
switch(type) {
case R_68K_32:
fprintf(outfile, " /* R_68K_32 RELOC, offset %x */\n", rel->r_offset) ;
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %#x;\n",
- rel->r_offset - start_offset, name, addend );
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %#x;\n",
+ reloc_offset, relname, addend );
break;
case R_68K_PC32:
fprintf(outfile, " /* R_68K_PC32 RELOC, offset %x */\n", rel->r_offset);
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %#x) + %#x;\n",
- rel->r_offset - start_offset, name, rel->r_offset - start_offset, /*sym->st_value+*/ addend);
+ fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %#x) + %#x;\n",
+ reloc_offset, relname, reloc_offset, /*sym->st_value+*/ addend);
break;
default:
error("unsupported m68k relocation (%d)", type);
}
}
}
+#elif defined(HOST_MIPS) || defined(HOST_MIPS64)
+ {
+ for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
+ if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) {
+ char relname[256];
+ int type;
+ int addend;
+ int reloc_offset;
+
+ sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
+ /* the compiler leave some unnecessary references to the code */
+ if (sym_name[0] == '\0')
+ continue;
+ get_reloc_expr(relname, sizeof(relname), sym_name);
+ type = ELF32_R_TYPE(rel->r_info);
+ addend = get32((uint32_t *)(text + rel->r_offset));
+ reloc_offset = rel->r_offset - start_offset;
+ switch (type) {
+ case R_MIPS_26:
+ fprintf(outfile, " /* R_MIPS_26 RELOC, offset 0x%x, name %s */\n",
+ rel->r_offset, sym_name);
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + 0x%x) = "
+ "(0x%x & ~0x3fffff) "
+ "| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) "
+ " & 0x3fffff);\n",
+ reloc_offset, addend, addend, relname, reloc_offset);
+ break;
+ case R_MIPS_HI16:
+ fprintf(outfile, " /* R_MIPS_HI16 RELOC, offset 0x%x, name %s */\n",
+ rel->r_offset, sym_name);
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + 0x%x) = "
+ "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
+ " & ~0xffff) "
+ " | (((%s - 0x8000) >> 16) & 0xffff);\n",
+ reloc_offset, reloc_offset, relname);
+ break;
+ case R_MIPS_LO16:
+ fprintf(outfile, " /* R_MIPS_LO16 RELOC, offset 0x%x, name %s */\n",
+ rel->r_offset, sym_name);
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + 0x%x) = "
+ "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
+ " & ~0xffff) "
+ " | (%s & 0xffff);\n",
+ reloc_offset, reloc_offset, relname);
+ break;
+ case R_MIPS_PC16:
+ fprintf(outfile, " /* R_MIPS_PC16 RELOC, offset 0x%x, name %s */\n",
+ rel->r_offset, sym_name);
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + 0x%x) = "
+ "(0x%x & ~0xffff) "
+ "| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) "
+ " & 0xffff);\n",
+ reloc_offset, addend, addend, relname, reloc_offset);
+ break;
+ case R_MIPS_GOT16:
+ case R_MIPS_CALL16:
+ fprintf(outfile, " /* R_MIPS_GOT16 RELOC, offset 0x%x, name %s */\n",
+ rel->r_offset, sym_name);
+ fprintf(outfile,
+ " *(uint32_t *)(gen_code_ptr + 0x%x) = "
+ "((*(uint32_t *)(gen_code_ptr + 0x%x)) "
+ " & ~0xffff) "
+ " | (((%s - 0x8000) >> 16) & 0xffff);\n",
+ reloc_offset, reloc_offset, relname);
+ break;
+ default:
+ error("unsupported MIPS relocation (%d)", type);
+ }
+ }
+ }
+ }
#else
#error unsupported CPU
#endif
gen_code(name, sym->st_value, sym->st_size, outfile, 0);
}
}
-
+
} else {
/* generate big code generation switch */
+
+#ifdef HOST_ARM
+ /* We need to know the size of all the ops so we can figure out when
+ to emit constant pools. This must be consistent with opc.h. */
+fprintf(outfile,
+"static const uint32_t arm_opc_size[] = {\n"
+" 0,\n" /* end */
+" 0,\n" /* nop */
+" 0,\n" /* nop1 */
+" 0,\n" /* nop2 */
+" 0,\n"); /* nop3 */
+ for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
+ const char *name;
+ name = get_sym_name(sym);
+ if (strstart(name, OP_PREFIX, NULL)) {
+ fprintf(outfile, " %d,\n", sym->st_size);
+ }
+ }
+fprintf(outfile,
+"};\n");
+#endif
+
fprintf(outfile,
"int dyngen_code(uint8_t *gen_code_buf,\n"
" uint16_t *label_offsets, uint16_t *jmp_offsets,\n"
" const uint32_t *opparam_ptr;\n");
#ifdef HOST_ARM
+/* Arm is tricky because it uses constant pools for loading immediate values.
+ We assume (and require) each function is code followed by a constant pool.
+ All the ops are small so this should be ok. For each op we figure
+ out how much "spare" range we have in the load instructions. This allows
+ us to insert subsequent ops in between the op and the constant pool,
+ eliminating the neeed to jump around the pool.
+
+ We currently generate:
+
+ [ For this example we assume merging would move op1_pool out of range.
+ In practice we should be able to combine many ops before the offset
+ limits are reached. ]
+ op1_code;
+ op2_code;
+ goto op3;
+ op2_pool;
+ op1_pool;
+op3:
+ op3_code;
+ ret;
+ op3_pool;
+
+ Ideally we'd put op1_pool before op2_pool, but that requires two passes.
+ */
fprintf(outfile,
" uint8_t *last_gen_code_ptr = gen_code_buf;\n"
" LDREntry *arm_ldr_ptr = arm_ldr_table;\n"
-" uint32_t *arm_data_ptr = arm_data_table;\n");
+" uint32_t *arm_data_ptr = arm_data_table + ARM_LDR_TABLE_SIZE;\n"
+/* Initialise the parmissible pool offset to an arbitary large value. */
+" uint8_t *arm_pool_ptr = gen_code_buf + 0x1000000;\n");
+#endif
+#ifdef HOST_IA64
+ {
+ long addend, not_first = 0;
+ unsigned long sym_idx;
+ int index, max_index;
+ const char *sym_name;
+ EXE_RELOC *rel;
+
+ max_index = -1;
+ for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
+ sym_idx = ELF64_R_SYM(rel->r_info);
+ sym_name = (strtab + symtab[sym_idx].st_name);
+ if (strstart(sym_name, "__op_gen_label", NULL))
+ continue;
+ if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
+ continue;
+
+ addend = rel->r_addend;
+ index = get_plt_index(sym_name, addend);
+ if (index <= max_index)
+ continue;
+ max_index = index;
+ fprintf(outfile, " extern void %s(void);\n", sym_name);
+ }
+
+ fprintf(outfile,
+ " struct ia64_fixup *plt_fixes = NULL, "
+ "*ltoff_fixes = NULL;\n"
+ " static long plt_target[] = {\n\t");
+
+ max_index = -1;
+ for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
+ sym_idx = ELF64_R_SYM(rel->r_info);
+ sym_name = (strtab + symtab[sym_idx].st_name);
+ if (strstart(sym_name, "__op_gen_label", NULL))
+ continue;
+ if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B)
+ continue;
+
+ addend = rel->r_addend;
+ index = get_plt_index(sym_name, addend);
+ if (index <= max_index)
+ continue;
+ max_index = index;
+
+ if (not_first)
+ fprintf(outfile, ",\n\t");
+ not_first = 1;
+ if (addend)
+ fprintf(outfile, "(long) &%s + %ld", sym_name, addend);
+ else
+ fprintf(outfile, "(long) &%s", sym_name);
+ }
+ fprintf(outfile, "\n };\n"
+ " unsigned int plt_offset[%u] = { 0 };\n", max_index + 1);
+ }
#endif
fprintf(outfile,
" opc_ptr = opc_buf;\n"
" opparam_ptr = opparam_buf;\n");
- /* Generate prologue, if needed. */
+ /* Generate prologue, if needed. */
fprintf(outfile,
-" for(;;) {\n"
-" switch(*opc_ptr++) {\n"
-);
+" for(;;) {\n");
+
+#ifdef HOST_ARM
+/* Generate constant pool if needed */
+fprintf(outfile,
+" if (gen_code_ptr + arm_opc_size[*opc_ptr] >= arm_pool_ptr) {\n"
+" gen_code_ptr = arm_flush_ldr(gen_code_ptr, arm_ldr_table, "
+"arm_ldr_ptr, arm_data_ptr, arm_data_table + ARM_LDR_TABLE_SIZE, 1);\n"
+" last_gen_code_ptr = gen_code_ptr;\n"
+" arm_ldr_ptr = arm_ldr_table;\n"
+" arm_data_ptr = arm_data_table + ARM_LDR_TABLE_SIZE;\n"
+" arm_pool_ptr = gen_code_ptr + 0x1000000;\n"
+" }\n");
+#endif
+
+fprintf(outfile,
+" switch(*opc_ptr++) {\n");
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
const char *name;
name = get_sym_name(sym);
if (strstart(name, OP_PREFIX, NULL)) {
#if 0
- printf("%4d: %s pos=0x%08x len=%d\n",
+ printf("%4d: %s pos=0x%08x len=%d\n",
i, name, sym->st_value, sym->st_size);
#endif
#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF)
" goto the_end;\n"
" }\n");
-#ifdef HOST_ARM
-/* generate constant table if needed */
-fprintf(outfile,
-" if ((gen_code_ptr - last_gen_code_ptr) >= (MAX_FRAG_SIZE - MAX_OP_SIZE)) {\n"
-" gen_code_ptr = arm_flush_ldr(gen_code_ptr, arm_ldr_table, arm_ldr_ptr, arm_data_table, arm_data_ptr, 1);\n"
-" last_gen_code_ptr = gen_code_ptr;\n"
-" arm_ldr_ptr = arm_ldr_table;\n"
-" arm_data_ptr = arm_data_table;\n"
-" }\n");
-#endif
-
fprintf(outfile,
" }\n"
" the_end:\n"
);
+#ifdef HOST_IA64
+ fprintf(outfile,
+ " {\n"
+ " extern char code_gen_buffer[];\n"
+ " ia64_apply_fixes(&gen_code_ptr, ltoff_fixes, "
+ "(uint64_t) code_gen_buffer + 2*(1<<20), plt_fixes,\n\t\t\t"
+ "sizeof(plt_target)/sizeof(plt_target[0]),\n\t\t\t"
+ "plt_target, plt_offset);\n }\n");
+#endif
-/* generate some code patching */
+/* generate some code patching */
#ifdef HOST_ARM
-fprintf(outfile, "gen_code_ptr = arm_flush_ldr(gen_code_ptr, arm_ldr_table, arm_ldr_ptr, arm_data_table, arm_data_ptr, 0);\n");
+fprintf(outfile,
+"if (arm_data_ptr != arm_data_table + ARM_LDR_TABLE_SIZE)\n"
+" gen_code_ptr = arm_flush_ldr(gen_code_ptr, arm_ldr_table, "
+"arm_ldr_ptr, arm_data_ptr, arm_data_table + ARM_LDR_TABLE_SIZE, 0);\n");
#endif
/* flush instruction cache */
fprintf(outfile, "flush_icache_range((unsigned long)gen_code_buf, (unsigned long)gen_code_ptr);\n");
projects / qemu.git / blobdiff