#define elf_check_arch(x) ((x) == EM_PPC)
#define ELF_USES_RELOCA
+#elif defined(HOST_PPC64)
+
+#define ELF_CLASS ELFCLASS64
+#define ELF_ARCH EM_PPC64
+#define elf_check_arch(x) ((x) == EM_PPC64)
+#define ELF_USES_RELOCA
+
#elif defined(HOST_S390)
#define ELF_CLASS ELFCLASS32
return data;
}
-int strstart(const char *str, const char *val, const char **ptr)
+static int strstart(const char *str, const char *val, const char **ptr)
{
const char *p, *q;
p = str;
return 1;
}
-void pstrcpy(char *buf, int buf_size, const char *str)
+static void pstrcpy(char *buf, int buf_size, const char *str)
{
int c;
char *q = buf;
*q = '\0';
}
-void swab16s(uint16_t *p)
+static void swab16s(uint16_t *p)
{
*p = bswap16(*p);
}
-void swab32s(uint32_t *p)
+static void swab32s(uint32_t *p)
{
*p = bswap32(*p);
}
-void swab32ss(int32_t *p)
+static void swab32ss(int32_t *p)
{
*p = bswap32(*p);
}
-void swab64s(uint64_t *p)
+static void swab64s(uint64_t *p)
{
*p = bswap64(*p);
}
-void swab64ss(int64_t *p)
+static void swab64ss(int64_t *p)
{
*p = bswap64(*p);
}
-uint16_t get16(uint16_t *p)
+static uint16_t get16(uint16_t *p)
{
uint16_t val;
val = *p;
return val;
}
-uint32_t get32(uint32_t *p)
+static uint32_t get32(uint32_t *p)
{
uint32_t val;
val = *p;
return val;
}
-void put16(uint16_t *p, uint16_t val)
+static void put16(uint16_t *p, uint16_t val)
{
if (do_swap)
val = bswap16(val);
*p = val;
}
-void put32(uint32_t *p, uint32_t val)
+static void put32(uint32_t *p, uint32_t val)
{
if (do_swap)
val = bswap32(val);
struct elfhdr ehdr;
char *strtab;
-int elf_must_swap(struct elfhdr *h)
+static int elf_must_swap(struct elfhdr *h)
{
union {
uint32_t i;
(swaptest.b[0] == 0);
}
-void elf_swap_ehdr(struct elfhdr *h)
+static void elf_swap_ehdr(struct elfhdr *h)
{
swab16s(&h->e_type); /* Object file type */
swab16s(&h-> e_machine); /* Architecture */
swab16s(&h-> e_shstrndx); /* Section header string table index */
}
-void elf_swap_shdr(struct elf_shdr *h)
+static void elf_swap_shdr(struct elf_shdr *h)
{
swab32s(&h-> sh_name); /* Section name (string tbl index) */
swab32s(&h-> sh_type); /* Section type */
swabls(&h-> sh_entsize); /* Entry size if section holds table */
}
-void elf_swap_phdr(struct elf_phdr *h)
+static void elf_swap_phdr(struct elf_phdr *h)
{
swab32s(&h->p_type); /* Segment type */
swabls(&h->p_offset); /* Segment file offset */
swabls(&h->p_align); /* Segment alignment */
}
-void elf_swap_rel(ELF_RELOC *rel)
+static void elf_swap_rel(ELF_RELOC *rel)
{
swabls(&rel->r_offset);
swabls(&rel->r_info);
#endif
}
-struct elf_shdr *find_elf_section(struct elf_shdr *shdr, int shnum, const char *shstr,
- const char *name)
+static struct elf_shdr *find_elf_section(struct elf_shdr *shdr, int shnum,
+ const char *shstr, const char *name)
{
int i;
const char *shname;
return NULL;
}
-int find_reloc(int sh_index)
+static int find_reloc(int sh_index)
{
struct elf_shdr *sec;
int i;
}
/* load an elf object file */
-int load_object(const char *filename)
+static int load_object(const char *filename)
{
int fd;
struct elf_shdr *sec, *symtab_sec, *strtab_sec, *text_sec;
#endif /* CONFIG_FORMAT_MACH */
/* return true if the expression is a label reference */
-int get_reloc_expr(char *name, int name_size, const char *sym_name)
+static int get_reloc_expr(char *name, int name_size, const char *sym_name)
{
const char *p;
#endif
-#ifdef HOST_ARM
-
-int arm_emit_ldr_info(const char *name, unsigned long start_offset,
- FILE *outfile, uint8_t *p_start, uint8_t *p_end,
- ELF_RELOC *relocs, int nb_relocs)
-{
- uint8_t *p;
- uint32_t insn;
- 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;
- 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: 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) ||
- pc_offset >= (p_end - p_start))
- 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) {
- /* The intruction position */
- fprintf(outfile, " arm_ldr_ptr->ptr = gen_code_ptr + %d;\n",
- p - p_start);
- /* 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");
- }
- }
- p += 4;
- }
-
- /* Copy and relocate the constant pool data. */
- data_size = (p_end - p_start) - min_offset;
- if (data_size > 0 && outfile) {
- 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++;
- }
- }
-
- if (p == p_start)
- goto arm_ret_error;
- p -= 4;
- insn = get32((uint32_t *)p);
- /* 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;
-}
-#endif
-
-
#define MAX_ARGS 3
/* generate op code */
-void gen_code(const char *name, host_ulong offset, host_ulong size,
- FILE *outfile, int gen_switch)
+static void gen_code(const char *name, host_ulong offset, host_ulong size,
+ FILE *outfile, int gen_switch)
{
int copy_size = 0;
uint8_t *p_start, *p_end;
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 ||
- (get32((uint32_t *)(p_start + 4)) & 0xffff0000) != 0xe92d0000 ||
- get32((uint32_t *)(p_start + 8)) != 0xe24cb004)
- error("%s: invalid prolog", name);
- p_start += 12;
- start_offset += 12;
- 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)
{
uint8_t *p;
}
copy_size = p - p_start;
}
+#elif defined(HOST_ARM)
+ error("dyngen targets not supported on ARM");
+#elif defined(HOST_PPC64)
+ error("dyngen targets not supported on PPC64");
#else
#error unsupported CPU
#endif
}
if (gen_switch == 2) {
- fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, copy_size);
+
+#if defined(HOST_HPPA)
+ int op_size = copy_size;
+ int has_stubs = 0;
+ char relname[256];
+ int type, is_label;
+
+ 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);
+ sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
+ is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
+ type = ELF32_R_TYPE(rel->r_info);
+
+ if (!is_label && type == R_PARISC_PCREL17F) {
+ has_stubs = 1;
+ op_size += 8; /* ldil and be,n instructions */
+ }
+ }
+ }
+
+ if (has_stubs)
+ op_size += 4; /* b,l,n instruction, to skip past the stubs */
+
+ fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, op_size);
+#else
+ fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, copy_size);
+#endif
+
} else if (gen_switch == 1) {
/* output C code */
char relname[256];
int type;
int addend;
+ int is_label;
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) {
+ 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)) {
get_reloc_expr(relname, sizeof(relname), sym_name);
type = ELF32_R_TYPE(rel->r_info);
+ is_label = get_reloc_expr(relname, sizeof(relname), sym_name);
addend = rel->r_addend;
- switch(type) {
- case R_PPC_ADDR32:
- 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",
- reloc_offset, relname, addend);
- break;
- case R_PPC_ADDR16_HI:
- 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",
- 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",
- reloc_offset, reloc_offset, relname, reloc_offset, addend);
- break;
- default:
- error("unsupported powerpc relocation (%d)", type);
+ if (is_label) {
+ switch (type) {
+ case R_PPC_REL24:
+ fprintf (outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n",
+ reloc_offset, type, relname, addend);
+ break;
+ default:
+ error ("unsupported ppc relocation (%d)", type);
+ }
+ }
+ else {
+ switch(type) {
+ case R_PPC_ADDR32:
+ 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",
+ reloc_offset, relname, addend);
+ break;
+ case R_PPC_ADDR16_HI:
+ 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",
+ reloc_offset, relname, addend);
+ break;
+ case R_PPC_REL24:
+ /* warning: must be at 32 MB distancy */
+ fprintf(outfile, "{\n"
+ " long disp = (%s - (long)(gen_code_ptr + %d) + %d);\n"
+ " if ((disp << 6) >> 6 != disp) {;\n"
+ " fprintf(stderr, \"Branch target is too far away\\n\");"
+ " abort();\n"
+ " }\n"
+ "}\n",
+ relname, reloc_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(HOST_ARM)
- {
- char relname[256];
- int type;
- int addend;
- 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++) {
- 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;
- /* 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_ARM_ABS32:
- fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n",
- reloc_offset, relname, addend);
- break;
- case R_ARM_PC24:
- 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 relname[256];
}
}
}
+#elif defined(HOST_ARM)
+ error("dyngen targets not supported on ARM");
+#elif defined(HOST_PPC64)
+ error("dyngen targets not supported on PPC64");
#else
#error unsupported CPU
#endif
}
}
-int gen_file(FILE *outfile, int out_type)
+static int gen_file(FILE *outfile, int out_type)
{
int i;
EXE_SYM *sym;
/* generate big code generation switch */
#ifdef HOST_ARM
-#error broken
- /* 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
-
-#ifdef HOST_ARM
-#error broken
-/* 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 + 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");
+ error("dyngen targets not supported on ARM");
#endif
#ifdef HOST_IA64
#error broken
}
#endif
-#ifdef HOST_ARM
-#error broken
-/* 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
-
for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
const char *name;
name = get_sym_name(sym);
return 0;
}
-void usage(void)
+static void usage(void)
{
printf("dyngen (c) 2003 Fabrice Bellard\n"
"usage: dyngen [-o outfile] [-c] objfile\n"
projects / qemu.git / blobdiff