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authorLinus Torvalds <torvalds@linux-foundation.org>2022-12-19 08:23:27 -0600
committerLinus Torvalds <torvalds@linux-foundation.org>2022-12-19 08:23:27 -0600
commit2f26e424552efd50722f4cf61f7f080373adbb1e (patch)
tree2ee52ba17fe19a6456d7110447e7127fd56c6b18 /scripts
parent96bab5b926e4c2d970f70495f4554f905babd09d (diff)
parent5535f4f70cfc15ef55b6ea7c7e17337b17337cb6 (diff)
Merge tag 'loongarch-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen: - Switch to relative exception tables - Add unaligned access support - Add alternative runtime patching mechanism - Add FDT booting support from efi system table - Add suspend/hibernation (ACPI S3/S4) support - Add basic STACKPROTECTOR support - Add ftrace (function tracer) support - Update the default config file * tag 'loongarch-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (24 commits) LoongArch: Update Loongson-3 default config file LoongArch: modules/ftrace: Initialize PLT at load time LoongArch/ftrace: Add HAVE_FUNCTION_GRAPH_RET_ADDR_PTR support LoongArch/ftrace: Add HAVE_DYNAMIC_FTRACE_WITH_ARGS support LoongArch/ftrace: Add HAVE_DYNAMIC_FTRACE_WITH_REGS support LoongArch/ftrace: Add dynamic function graph tracer support LoongArch/ftrace: Add dynamic function tracer support LoongArch/ftrace: Add recordmcount support LoongArch/ftrace: Add basic support LoongArch: module: Use got/plt section indices for relocations LoongArch: Add basic STACKPROTECTOR support LoongArch: Add hibernation (ACPI S4) support LoongArch: Add suspend (ACPI S3) support LoongArch: Add processing ISA Node in DeviceTree LoongArch: Add FDT booting support from efi system table LoongArch: Use alternative to optimize libraries LoongArch: Add alternative runtime patching mechanism LoongArch: Add unaligned access support LoongArch: BPF: Add BPF exception tables LoongArch: Remove the .fixup section usage ...
Diffstat (limited to 'scripts')
-rw-r--r--scripts/mod/modpost.c13
-rw-r--r--scripts/recordmcount.c39
-rw-r--r--scripts/sorttable.c2
3 files changed, 53 insertions, 1 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 2c80da0220c3..9321c0a05ffd 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1523,6 +1523,14 @@ static int addend_mips_rel(struct elf_info *elf, Elf_Shdr *sechdr, Elf_Rela *r)
#define R_RISCV_SUB32 39
#endif
+#ifndef EM_LOONGARCH
+#define EM_LOONGARCH 258
+#endif
+
+#ifndef R_LARCH_SUB32
+#define R_LARCH_SUB32 55
+#endif
+
static void section_rela(const char *modname, struct elf_info *elf,
Elf_Shdr *sechdr)
{
@@ -1564,6 +1572,11 @@ static void section_rela(const char *modname, struct elf_info *elf,
ELF_R_TYPE(r.r_info) == R_RISCV_SUB32)
continue;
break;
+ case EM_LOONGARCH:
+ if (!strcmp("__ex_table", fromsec) &&
+ ELF_R_TYPE(r.r_info) == R_LARCH_SUB32)
+ continue;
+ break;
}
sym = elf->symtab_start + r_sym;
/* Skip special sections */
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index cce12e1971d8..e30216525325 100644
--- a/scripts/recordmcount.c
+++ b/scripts/recordmcount.c
@@ -38,6 +38,14 @@
#define R_AARCH64_ABS64 257
#endif
+#ifndef EM_LOONGARCH
+#define EM_LOONGARCH 258
+#define R_LARCH_32 1
+#define R_LARCH_64 2
+#define R_LARCH_MARK_LA 20
+#define R_LARCH_SOP_PUSH_PLT_PCREL 29
+#endif
+
#define R_ARM_PC24 1
#define R_ARM_THM_CALL 10
#define R_ARM_CALL 28
@@ -441,6 +449,28 @@ static int arm64_is_fake_mcount(Elf64_Rel const *rp)
return ELF64_R_TYPE(w8(rp->r_info)) != R_AARCH64_CALL26;
}
+static int LARCH32_is_fake_mcount(Elf32_Rel const *rp)
+{
+ switch (ELF64_R_TYPE(w(rp->r_info))) {
+ case R_LARCH_MARK_LA:
+ case R_LARCH_SOP_PUSH_PLT_PCREL:
+ return 0;
+ }
+
+ return 1;
+}
+
+static int LARCH64_is_fake_mcount(Elf64_Rel const *rp)
+{
+ switch (ELF64_R_TYPE(w(rp->r_info))) {
+ case R_LARCH_MARK_LA:
+ case R_LARCH_SOP_PUSH_PLT_PCREL:
+ return 0;
+ }
+
+ return 1;
+}
+
/* 64-bit EM_MIPS has weird ELF64_Rela.r_info.
* http://techpubs.sgi.com/library/manuals/4000/007-4658-001/pdf/007-4658-001.pdf
* We interpret Table 29 Relocation Operation (Elf64_Rel, Elf64_Rela) [p.40]
@@ -558,6 +588,7 @@ static int do_file(char const *const fname)
break;
case EM_IA_64: reltype = R_IA64_IMM64; break;
case EM_MIPS: /* reltype: e_class */ break;
+ case EM_LOONGARCH: /* reltype: e_class */ break;
case EM_PPC: reltype = R_PPC_ADDR32; break;
case EM_PPC64: reltype = R_PPC64_ADDR64; break;
case EM_S390: /* reltype: e_class */ break;
@@ -589,6 +620,10 @@ static int do_file(char const *const fname)
reltype = R_MIPS_32;
is_fake_mcount32 = MIPS32_is_fake_mcount;
}
+ if (w2(ehdr->e_machine) == EM_LOONGARCH) {
+ reltype = R_LARCH_32;
+ is_fake_mcount32 = LARCH32_is_fake_mcount;
+ }
if (do32(ehdr, fname, reltype) < 0)
goto out;
break;
@@ -610,6 +645,10 @@ static int do_file(char const *const fname)
Elf64_r_info = MIPS64_r_info;
is_fake_mcount64 = MIPS64_is_fake_mcount;
}
+ if (w2(ghdr->e_machine) == EM_LOONGARCH) {
+ reltype = R_LARCH_64;
+ is_fake_mcount64 = LARCH64_is_fake_mcount;
+ }
if (do64(ghdr, fname, reltype) < 0)
goto out;
break;
diff --git a/scripts/sorttable.c b/scripts/sorttable.c
index fba40e99f354..83cdb843d92f 100644
--- a/scripts/sorttable.c
+++ b/scripts/sorttable.c
@@ -304,6 +304,7 @@ static int do_file(char const *const fname, void *addr)
switch (r2(&ehdr->e_machine)) {
case EM_386:
case EM_AARCH64:
+ case EM_LOONGARCH:
case EM_RISCV:
case EM_S390:
case EM_X86_64:
@@ -317,7 +318,6 @@ static int do_file(char const *const fname, void *addr)
case EM_ARCOMPACT:
case EM_ARCV2:
case EM_ARM:
- case EM_LOONGARCH:
case EM_MICROBLAZE:
case EM_MIPS:
case EM_XTENSA: