ia64 support - alpha support
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@116 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
parent
0d3301964d
commit
efdea7bf19
145
dyngen.c
145
dyngen.c
@ -58,20 +58,29 @@
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#define elf_check_arch(x) ((x) == EM_ALPHA)
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#define ELF_USES_RELOCA
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#elif defined(HOST_IA64)
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#define ELF_CLASS ELFCLASS64
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#define ELF_ARCH EM_IA_64
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#define elf_check_arch(x) ((x) == EM_IA_64)
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#define ELF_USES_RELOCA
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#else
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#error unsupported CPU - please update the code
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#endif
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#include "elf.h"
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#if ELF_CLASS == ELFCLASS32
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typedef int32_t host_long;
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typedef uint32_t host_ulong;
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#define swabls(x) swab32s(x)
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#else
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typedef int64_t host_long;
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typedef uint64_t host_ulong;
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#define swabls(x) swab64s(x)
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#endif
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#include "elf.h"
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#include "thunk.h"
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/* all dynamically generated functions begin with this code */
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@ -104,12 +113,6 @@ void swab64s(uint64_t *p)
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*p = bswap64(*p);
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}
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#if ELF_CLASS == ELFCLASS32
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#define swabls(x) swab32s(x)
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#else
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#define swabls(x) swab64s(x)
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#endif
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void elf_swap_ehdr(struct elfhdr *h)
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{
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swab16s(&h->e_type); /* Object file type */
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@ -187,7 +190,7 @@ void put32(uint32_t *p, uint32_t val)
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*p = val;
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}
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void __attribute__((noreturn)) error(const char *fmt, ...)
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void __attribute__((noreturn)) __attribute__((format (printf, 1, 2))) error(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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@ -295,10 +298,36 @@ void gen_code(const char *name, host_ulong offset, host_ulong size,
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if (p == p_start)
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error("empty code for %s", name);
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if (get16((uint16_t *)p) != 0x07fe && get16((uint16_t *)p) != 0x07f4)
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error("br %r14 expected at the end of %s", name);
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error("br %%r14 expected at the end of %s", name);
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copy_size = p - p_start;
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}
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break;
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case EM_ALPHA:
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{
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uint8_t *p;
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p = p_end - 4;
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if (p == p_start)
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error("empty code for %s", name);
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if (get32((uint32_t *)p) != 0x6bfa8001)
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error("ret expected at the end of %s", name);
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copy_size = p - p_start;
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}
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break;
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case EM_IA_64:
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{
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uint8_t *p;
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p = (void *)(p_end - 4);
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if (p == p_start)
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error("empty code for %s", name);
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/* br.ret.sptk.many b0;; */
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/* 08 00 84 00 */
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if (get32((uint32_t *)p) != 0x00840008)
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error("br.ret.sptk.many b0;; expected at the end of %s", name);
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copy_size = p - p_start;
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}
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break;
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default:
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error("unknown ELF architecture");
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}
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/* compute the number of arguments by looking at the relocations */
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@ -344,7 +373,7 @@ void gen_code(const char *name, host_ulong offset, host_ulong size,
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for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
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if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
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sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
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sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
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if (!strstart(sym_name, "__op_param", &p)) {
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fprintf(outfile, "extern char %s;\n", sym_name);
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}
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@ -364,7 +393,7 @@ void gen_code(const char *name, host_ulong offset, host_ulong size,
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int addend;
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for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
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if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
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sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
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sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
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if (strstart(sym_name, "__op_param", &p)) {
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snprintf(name, sizeof(name), "param%s", p);
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} else {
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@ -394,7 +423,7 @@ void gen_code(const char *name, host_ulong offset, host_ulong size,
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int addend;
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for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
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if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
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sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
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sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
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if (strstart(sym_name, "__op_param", &p)) {
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snprintf(name, sizeof(name), "param%s", p);
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} else {
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@ -437,7 +466,7 @@ void gen_code(const char *name, host_ulong offset, host_ulong size,
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int addend;
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for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
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if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
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sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name;
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sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name;
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if (strstart(sym_name, "__op_param", &p)) {
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snprintf(name, sizeof(name), "param%s", p);
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} else {
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@ -464,6 +493,67 @@ void gen_code(const char *name, host_ulong offset, host_ulong size,
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}
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}
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}
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#elif defined(HOST_ALPHA)
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{
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for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) {
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if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
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int type;
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sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
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type = ELF64_R_TYPE(rel->r_info);
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switch (type) {
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case R_ALPHA_GPDISP:
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/* Instructions to set up the gp can be nopped, since we keep it current
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all the time. FIXME assert that target is really gp */
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fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = 0x2ffe0000; /* unop */\n",
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rel->r_offset - offset);
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break;
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case R_ALPHA_LITUSE:
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/* jsr to literal hint. Could be used to optimize to bsr. Ignore for
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now, since some called functions (libc) need pv to be set up. */
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break;
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case R_ALPHA_HINT:
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/* Branch target prediction hint. Ignore for now. Should be already
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correct for in-function jumps. */
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break;
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case R_ALPHA_LITERAL:
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/* Load a literal from the GOT relative to the gp. Need to patch the
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16-bit immediate offset. */
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fprintf(outfile, " *(int16_t *)(gen_code_ptr + %d) = gp - (long)(&%s);\n",
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rel->r_offset - offset, name);
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break;
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default:
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error("unsupported Alpha relocation (%d)", type);
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}
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}
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}
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}
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#elif defined(HOST_IA64)
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{
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char name[256];
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int type;
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int addend;
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for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) {
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if (rel->r_offset >= offset && rel->r_offset < offset + copy_size) {
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sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name;
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if (strstart(sym_name, "__op_param", &p)) {
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snprintf(name, sizeof(name), "param%s", p);
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} else {
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snprintf(name, sizeof(name), "(long)(&%s)", sym_name);
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}
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type = ELF64_R_TYPE(rel->r_info);
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addend = rel->r_addend;
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switch(type) {
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case R_IA64_LTOFF22:
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error("must implemnt R_IA64_LTOFF22 relocation");
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case R_IA64_PCREL21B:
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error("must implemnt R_IA64_PCREL21B relocation");
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default:
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error("unsupported ia64 relocation (%d)", type);
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}
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}
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}
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}
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#else
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#error unsupported CPU
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#endif
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@ -564,17 +654,17 @@ int load_elf(const char *filename, FILE *outfile, int do_print_enum)
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nb_relocs = sec->sh_size / sec->sh_entsize;
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if (do_swap) {
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if (sec->sh_type == SHT_REL) {
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Elf32_Rel *rel = relocs;
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ElfW(Rel) *rel = relocs;
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for(j = 0, rel = relocs; j < nb_relocs; j++, rel++) {
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swab32s(&rel->r_offset);
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swab32s(&rel->r_info);
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swabls(&rel->r_offset);
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swabls(&rel->r_info);
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}
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} else {
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Elf32_Rela *rel = relocs;
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ElfW(Rela) *rel = relocs;
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for(j = 0, rel = relocs; j < nb_relocs; j++, rel++) {
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swab32s(&rel->r_offset);
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swab32s(&rel->r_info);
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swab32s(&rel->r_addend);
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swabls(&rel->r_offset);
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swabls(&rel->r_info);
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swabls(&rel->r_addend);
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}
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}
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}
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@ -590,7 +680,7 @@ int load_elf(const char *filename, FILE *outfile, int do_print_enum)
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symtab = load_data(fd, symtab_sec->sh_offset, symtab_sec->sh_size);
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strtab = load_data(fd, strtab_sec->sh_offset, strtab_sec->sh_size);
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nb_syms = symtab_sec->sh_size / sizeof(Elf32_Sym);
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nb_syms = symtab_sec->sh_size / sizeof(ElfW(Sym));
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if (do_swap) {
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for(i = 0, sym = symtab; i < nb_syms; i++, sym++) {
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swab32s(&sym->st_name);
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@ -612,6 +702,9 @@ int load_elf(const char *filename, FILE *outfile, int do_print_enum)
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}
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} else {
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/* generate big code generation switch */
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#ifdef HOST_ALPHA
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fprintf(outfile, "register long gp asm(\"%%$29\");\n");
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#endif
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fprintf(outfile,
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"int dyngen_code(uint8_t *gen_code_buf,\n"
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" const uint16_t *opc_buf, const uint32_t *opparam_buf)\n"
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@ -660,6 +753,14 @@ fprintf(outfile,
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case EM_S390:
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fprintf(outfile, "*((uint16_t *)gen_code_ptr)++ = 0x07fe; /* br %%r14 */\n");
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break;
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case EM_ALPHA:
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fprintf(outfile, "*((uint32_t *)gen_code_ptr)++ = 0x6bfa8001; /* ret */\n");
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break;
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case EM_IA_64:
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fprintf(outfile, "*((uint32_t *)gen_code_ptr)++ = 0x00840008; /* br.ret.sptk.many b0;; */\n");
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break;
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default:
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error("unknown ELF architecture");
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}
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fprintf(outfile, "return gen_code_ptr - gen_code_buf;\n");
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@ -53,6 +53,12 @@ static inline void flush_icache_range(unsigned long start, unsigned long stop)
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}
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#endif
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#ifdef __ia64__
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static inline void flush_icache_range(unsigned long start, unsigned long stop)
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{
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}
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#endif
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#ifdef __powerpc__
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#define MIN_CACHE_LINE_SIZE 8 /* conservative value */
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@ -76,6 +82,13 @@ static void inline flush_icache_range(unsigned long start, unsigned long stop)
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}
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#endif
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#ifdef __alpha__
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static inline void flush_icache_range(unsigned long start, unsigned long stop)
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{
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asm ("imb");
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}
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#endif
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extern FILE *logfile;
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extern int loglevel;
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