Skip to content

Add loongarch64 support #167

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
zhaixiaojuan wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Add loongarch64 support #167

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
67 changes: 66 additions & 1 deletion src/low_native_api.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -317,6 +317,13 @@ void *native_api_load(const char *data, unsigned int size, const char **err, boo
*err = "File is an ELF file, but not one for arm machines.";
return NULL;
}
#elif defined(__loongarch64)
if(hdr->e_ident[EI_CLASS] != ELFCLASS64
|| hdr->e_machine != EM_LOONGARCH)
{
*err = "File is an ELF file, but not one for loongarch64 machines.";
return NULL;
}
#endif

if(!hdr->e_phnum || size < hdr->e_phoff + hdr->e_phnum * sizeof(Elf_Phdr)
Expand Down Expand Up @@ -644,6 +651,64 @@ void *native_api_load(const char *data, unsigned int size, const char **err, boo
*(uintptr_t *)(exec + rel[j].r_offset) += (uintptr_t)exec;
break;

default:
munmap(base, exec_size);
*err = (char *)low_alloc(80);
sprintf((char *)*err, "Unknown relocatable type #%d.", (int)ELF_R_TYPE(rel[j].r_info));
*err_malloc = true;
return NULL;
}
}
#elif defined(__loongarch64)
if (shdr[i].sh_type == SHT_RELA)
{
const Elf_Rela *rel = (const Elf_Rela *)(data + shdr[i].sh_offset);
for(int j = 0; j < shdr[i].sh_size / sizeof(Elf_Rela); j++)
switch(ELF_R_TYPE(rel[j].r_info))
{
case R_LARCH_NONE: break;

case R_LARCH_64:
case R_LARCH_64_PCREL:
case R_LARCH_JUMP_SLOT:
uintptr_t func;
const char *sym;

sym = strings + syms[ELF_R_SYM(rel[j].r_info)].st_name;
func = 0;

for(int k = 0; k < sizeof(NATIVE_API_ENTRIES) / sizeof(native_api_entry_t); k++)
{
if(strcmp(NATIVE_API_ENTRIES[k].name, sym) == 0)
{
func = NATIVE_API_ENTRIES[k].func;
break;
}
}

if(!func)
func = (uintptr_t)dlsym(RTLD_DEFAULT, sym);
if(!func)
{
munmap(base, exec_size);
*err = (char *)low_alloc(80 + strlen(sym));
sprintf((char *)*err, "File asks for symbol '%s' which low.js does not know of.", sym);
*err_malloc = true;
return NULL;
}

if(ELF_R_TYPE(rel[j].r_info) == R_LARCH_64_PCREL)
*(uintptr_t *)(exec + rel[j].r_offset) = func + rel[j].r_addend - (uintptr_t)(exec + rel[j].r_offset);
else if(ELF_R_TYPE(rel[j].r_info) == R_LARCH_64)
*(uintptr_t *)(exec + rel[j].r_offset) = func + rel[j].r_addend;
else
*(uintptr_t *)(exec + rel[j].r_offset) = func;
break;

case R_LARCH_RELATIVE:
*(uintptr_t *)(exec + rel[j].r_offset) = (uintptr_t)exec + rel[j].r_addend;
break;

default:
munmap(base, exec_size);
*err = (char *)low_alloc(80);
Expand Down Expand Up @@ -788,7 +853,7 @@ int native_api_call(duk_context *ctx)

void native_api_unload_all()
{
#if defined(__x86_64__) || defined(__i386__) || defined(__aarch64__) || defined(__arm__)
#if defined(__x86_64__) || defined(__i386__) || defined(__aarch64__) || defined(__arm__) || defined(__loongarch64)
for(int i = 0; i < gNativeAPIRegisteredFrames.size(); i++)
__deregister_frame(gNativeAPIRegisteredFrames[i]);
gNativeAPIRegisteredFrames.clear();
Expand Down
2 changes: 2 additions & 0 deletions src/low_process.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -371,6 +371,8 @@ duk_ret_t low_process_info(duk_context *ctx)
duk_push_string(ctx, "x64");
#elif defined(__i386__)
duk_push_string(ctx, "x32");
#elif defined(__loongarch64)
duk_push_string(ctx, "loongarch64");
#else
#error "unknown architecture"
#endif
Expand Down
53 changes: 53 additions & 0 deletions src/sys/elf_common.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -304,6 +304,8 @@ typedef struct {
#define EM_AARCH64 183 /* AArch64 (64-bit ARM) */
#define EM_RISCV 243 /* RISC-V */

#define EM_LOONGARCH 258 /* LoongArch */

/* Non-standard or deprecated. */
#define EM_486 6 /* Intel i486. */
#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
Expand Down Expand Up @@ -1141,6 +1143,57 @@ typedef struct {
#define R_IA_64_DTPREL64LSB 0xb7 /* word64 LSB @dtprel(S + A) */
#define R_IA_64_LTOFF_DTPREL22 0xba /* imm22 @ltoff(@dtprel(S+A)) */

#define R_LARCH_NONE 0 /* None */
#define R_LARCH_32 1 /* *(int32_t *) PC = RtAddr + A */
#define R_LARCH_64 2 /* *(int64_t *) PC = RtAddr + A */
#define R_LARCH_RELATIVE 3 /* *(void **) PC = B + A */
#define R_LARCH_COPY 4 /* memcpy (PC, RtAddr, sizeof (sym)) */
#define R_LARCH_JUMP_SLOT 5 /* implementation-defined */
#define R_LARCH_TLS_DTPMOD32 6 /* *(int32_t *) PC = ID of module defining sym */
#define R_LARCH_TLS_DTPMOD64 7 /* *(int64_t *) PC = ID of module defining sym */
#define R_LARCH_TLS_DTPREL32 8 /* *(int32_t *) PC = DTV-relative offset for sym */
#define R_LARCH_TLS_DTPREL64 9 /* *(int64_t *) PC = DTV-relative offset for sym */
#define R_LARCH_TLS_TPREL32 10 /* *(int32_t *) PC = T */
#define R_LARCH_TLS_TPREL64 11 /* *(int64_t *) PC = T */
#define R_LARCH_IRELATIVE 12 /* *(void **) PC = (((void *)(*)()) (B + A)) () */
#define R_LARCH_B16 64 /* 18-bit PC-relative jump */
#define R_LARCH_B21 65 /* 23-bit PC-relative jump */
#define R_LARCH_B26 66 /* 28-bit PC-relative jump */
#define R_LARCH_ABS_HI20 67 /* [31 ... 12] bits of 32/64-bit absolute address */
#define R_LARCH_ABS_LO12 68 /* [11 ... 0] bits of 32/64-bit absolute address */
#define R_LARCH_ABS64_LO20 69 /* [51 ... 32] bits of 64-bit absolute address */
#define R_LARCH_ABS64_HI12 70 /* [63 ... 52] bits of 64-bit absolute address */
#define R_LARCH_PCALA_HI20 71 /* [31 ... 12] bits of 32/64-bit PC-relative offset */
#define R_LARCH_PCALA_LO12 72 /* [11 ... 0] bits of 32/64-bit address */
#define R_LARCH_PCALA64_LO20 73 /* [51 ... 32] bits of 64-bit PC-relative offset */
#define R_LARCH_PCALA64_HI12 74 /* [63 ... 52] bits of 64-bit PC-relative offset */
#define R_LARCH_GOT_PC_HI20 75 /* [31 ... 12] bits of 32/64-bit PC-relative offset to GOT entry */
#define R_LARCH_GOT_PC_LO12 76 /* [11 ... 0] bits of 32/64-bit GOT entry address */
#define R_LARCH_GOT64_PC_LO20 77 /* [51 ... 32] bits of 64-bit PC-relative offset to GOT entry */
#define R_LARCH_GOT64_PC_HI12 78 /* [63 ... 52] bits of 64-bit PC-relative offset to GOT entry */
#define R_LARCH_GOT_HI20 79 /* [31 ... 12] bits of 32/64-bit GOT entry absolute address */
#define R_LARCH_GOT_LO12 80 /* [11 ... 0] bits of 32/64-bit GOT entry absolute address */
#define R_LARCH_GOT64_LO20 81 /* [51 ... 32] bits of 64-bit GOT entry absolute address */
#define R_LARCH_GOT64_HI12 82 /* [63 ... 52] bits of 64-bit GOT entry absolute address */
#define R_LARCH_TLS_LE_HI20 83 /* [31 ... 12] bits of TLS LE 32/64-bit offset from TP register */
#define R_LARCH_TLS_LE_LO12 84 /* [11 ... 0] bits of TLS LE 32/64-bit offset from TP register */
#define R_LARCH_TLS_LE64_LO20 85 /* [51 ... 32] bits of TLS LE 64-bit offset from TP register */
#define R_LARCH_TLS_LE64_HI12 86 /* [63 ... 52] bits of TLS LE 64-bit offset from TP register */
#define R_LARCH_TLS_IE_PC_HI20 87 /* [31 ... 12] bits of 32/64-bit PC-relative offset to TLS IE GOT entry */
#define R_LARCH_TLS_IE_PC_LO12 88 /* [11 ... 0] bits of 32/64-bit TLS IE GOT entry address */
#define R_LARCH_TLS_IE64_PC_LO20 89 /* [51 ... 32] bits of 64-bit PC-relative offset to TLS IE GOT entry */
#define R_LARCH_TLS_IE64_PC_HI12 90 /* [63 ... 52] bits of 64-bit PC-relative offset to TLS IE GOT entry */
#define R_LARCH_TLS_IE_HI20 91 /* [31 ... 12] bits of 32/64-bit TLS IE GOT entry absolute address */
#define R_LARCH_TLS_IE_LO12 92 /* [11 ... 0] bits of 32/64-bit TLS IE GOT entry absolute address */
#define R_LARCH_TLS_IE64_LO20 93 /* [51 ... 32] bits of 64-bit TLS IE GOT entry absolute address */
#define R_LARCH_TLS_IE64_HI12 94 /* [63 ... 52] bits of 64-bit TLS IE GOT entry absolute address */
#define R_LARCH_TLS_LD_PC_HI20 95 /* [31 ... 12] bits of 32/64-bit PC-relative offset to TLS LD GOT entry */
#define R_LARCH_TLS_LD_HI20 96 /* [31 ... 12] bits of 32/64-bit TLS LD GOT entry absolute address */
#define R_LARCH_TLS_GD_PC_HI20 97 /* [31 ... 12] bits of 32/64-bit PC-relative offset to TLS GD GOT entry */
#define R_LARCH_TLS_GD_HI20 98 /* [31 ... 12] bits of 32/64-bit TLS GD GOT entry absolute address */
#define R_LARCH_32_PCREL 99 /* 32-bit PC relative */
#define R_LARCH_RELAX 100 /* Instruction can be relaxed, paired with a normal relocation at the same address */

#define R_MIPS_NONE 0 /* No reloc */
#define R_MIPS_16 1 /* Direct 16 bit */
#define R_MIPS_32 2 /* Direct 32 bit */
Expand Down