80 lines
2.8 KiB
Diff
80 lines
2.8 KiB
Diff
diff --git a/build/moz.configure/init.configure b/build/moz.configure/init.configure
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index 83b8d70..e5f3182 100644
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--- a/build/moz.configure/init.configure
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+++ b/build/moz.configure/init.configure
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@@ -676,6 +676,9 @@ def split_triplet(triplet, allow_unknown
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elif cpu == 'sh4':
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canonical_cpu = 'sh4'
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endianness = 'little'
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+ elif cpu == 'riscv64':
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+ canonical_cpu = 'riscv64'
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+ endianness = 'little'
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elif allow_unknown:
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canonical_cpu = cpu
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endianness = 'unknown'
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diff --git a/js/src/jit/AtomicOperations.h b/js/src/jit/AtomicOperations.h
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index a8970b0..41503c8 100644
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--- a/js/src/jit/AtomicOperations.h
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+++ b/js/src/jit/AtomicOperations.h
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@@ -393,6 +393,8 @@ inline bool AtomicOperations::isLockfree
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#include "jit/none/AtomicOperations-feeling-lucky.h"
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#elif defined(__s390__) || defined(__s390x__)
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#include "jit/none/AtomicOperations-feeling-lucky.h"
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+#elif defined(__riscv)
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+# include "jit/none/AtomicOperations-feeling-lucky.h"
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#else
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#error "No AtomicOperations support provided for this platform"
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#endif
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diff --git a/js/src/jit/none/AtomicOperations-feeling-lucky.h b/js/src/jit/none/AtomicOperations-feeling-lucky.h
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index da57228..5167e82 100644
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--- a/js/src/jit/none/AtomicOperations-feeling-lucky.h
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+++ b/js/src/jit/none/AtomicOperations-feeling-lucky.h
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@@ -80,6 +80,14 @@
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#define GNUC_COMPATIBLE
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#endif
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+#ifdef __riscv
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+# define GNUC_COMPATIBLE
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+# if __riscv_xlen == 64
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+# define HAS_64BIT_ATOMICS
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+# define HAS_64BIT_LOCKFREE
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+# endif
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+#endif
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+
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// The default implementation tactic for gcc/clang is to use the newer
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// __atomic intrinsics added for use in C++11 <atomic>. Where that
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// isn't available, we use GCC's older __sync functions instead.
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diff --git a/mfbt/tests/TestPoisonArea.cpp b/mfbt/tests/TestPoisonArea.cpp
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index 06c24ed..fba9263 100644
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--- a/mfbt/tests/TestPoisonArea.cpp
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+++ b/mfbt/tests/TestPoisonArea.cpp
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@@ -168,6 +168,9 @@ static const ia64_instr _return_instr =
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#define RETURN_INSTR _return_instr
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#define RETURN_INSTR_TYPE ia64_instr
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+#elif defined __riscv
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+#define RETURN_INSTR 0x80828082 /* ret; ret */
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+
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#else
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#error "Need return instruction for this architecture"
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#endif
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diff --git a/python/mozbuild/mozbuild/configure/constants.py b/python/mozbuild/mozbuild/configure/constants.py
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index 33ae5a4..b7be8ce 100644
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--- a/python/mozbuild/mozbuild/configure/constants.py
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+++ b/python/mozbuild/mozbuild/configure/constants.py
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@@ -50,6 +50,7 @@ CPU_bitness = {
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'mips64': 64,
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'ppc': 32,
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'ppc64': 64,
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+ 'riscv64': 64,
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's390': 32,
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's390x': 64,
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'sh4': 32,
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@@ -89,6 +90,7 @@ CPU_preprocessor_checks = OrderedDict((
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('mips64', '__mips64'),
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('mips32', '__mips__'),
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('sh4', '__sh__'),
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+ ('riscv64', '__riscv && __riscv_xlen == 64'),
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))
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assert sorted(CPU_preprocessor_checks.keys()) == sorted(CPU.POSSIBLE_VALUES)
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