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8199138: Add RISC-V support to Zero

Reviewed-by: erikj, stuefe
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John Paul Adrian Glaubitz committed Apr 7, 2020
1 parent b317d0e commit edc4ffe54b8c1f042e98c0ddb9dce757d88b01f4
Showing with 15 additions and 1 deletion.
  1. +8 −0 make/autoconf/platform.m4
  2. +7 −1 src/hotspot/os/linux/os_linux.cpp
@@ -120,6 +120,12 @@ AC_DEFUN([PLATFORM_EXTRACT_VARS_FROM_CPU],
VAR_CPU_BITS=64
VAR_CPU_ENDIAN=little
;;
riscv64)
VAR_CPU=riscv64
VAR_CPU_ARCH=riscv
VAR_CPU_BITS=64
VAR_CPU_ENDIAN=little
;;
s390)
VAR_CPU=s390
VAR_CPU_ARCH=s390
@@ -485,6 +491,8 @@ AC_DEFUN([PLATFORM_SETUP_LEGACY_VARS_HELPER],
HOTSPOT_$1_CPU_DEFINE=S390
elif test "x$OPENJDK_$1_CPU" = xs390x; then
HOTSPOT_$1_CPU_DEFINE=S390
elif test "x$OPENJDK_$1_CPU" = xriscv64; then
HOTSPOT_$1_CPU_DEFINE=RISCV
elif test "x$OPENJDK_$1_CPU" != x; then
HOTSPOT_$1_CPU_DEFINE=$(echo $OPENJDK_$1_CPU | tr a-z A-Z)
fi
@@ -1851,6 +1851,9 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
#ifndef EM_AARCH64
#define EM_AARCH64 183 /* ARM AARCH64 */
#endif
#ifndef EM_RISCV
#define EM_RISCV 243 /* RISC-V */
#endif

static const arch_t arch_array[]={
{EM_386, EM_386, ELFCLASS32, ELFDATA2LSB, (char*)"IA 32"},
@@ -1877,6 +1880,7 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
{EM_PARISC, EM_PARISC, ELFCLASS32, ELFDATA2MSB, (char*)"PARISC"},
{EM_68K, EM_68K, ELFCLASS32, ELFDATA2MSB, (char*)"M68k"},
{EM_AARCH64, EM_AARCH64, ELFCLASS64, ELFDATA2LSB, (char*)"AARCH64"},
{EM_RISCV, EM_RISCV, ELFCLASS64, ELFDATA2LSB, (char*)"RISC-V"},
};

#if (defined IA32)
@@ -1911,9 +1915,11 @@ void * os::dll_load(const char *filename, char *ebuf, int ebuflen) {
static Elf32_Half running_arch_code=EM_68K;
#elif (defined SH)
static Elf32_Half running_arch_code=EM_SH;
#elif (defined RISCV)
static Elf32_Half running_arch_code=EM_RISCV;
#else
#error Method os::dll_load requires that one of following is defined:\
AARCH64, ALPHA, ARM, AMD64, IA32, IA64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, S390, SH, __sparc
AARCH64, ALPHA, ARM, AMD64, IA32, IA64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, RISCV, S390, SH, __sparc
#endif

// Identify compatibility class for VM's architecture and library's architecture

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