[x86/Linux] Port jithelp.asm (dotnet/coreclr#8491)

* [x86/Linux] Port jithelp.asm This commit ports jithelp.asm for x86/Linux The following Tailcall helpers are marked as NYI: - JIT_TailCall - JIT_TailCallReturnFromVSD - JIT_TailCallVSDLeave - JIT_TailCallLeave * Revise macro and indentation Commit migrated from dotnet/coreclr@e8e2adf
picenka21 · Dec 13, 2016 · a2e50f0 · a2e50f0
1 parent 5d6eb22
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diff --git a/src/coreclr/src/pal/inc/unixasmmacrosx86.inc b/src/coreclr/src/pal/inc/unixasmmacrosx86.inc
@@ -65,3 +65,14 @@ C_FUNC(\Name\()_End):
 .macro EPILOG_END
         pop ebp
 .endm
+
+.macro PREPARE_EXTERNAL_VAR Name, Reg
+.att_syntax
+    call  0f
+0:
+    popl  %\Reg
+1:
+    addl  $_GLOBAL_OFFSET_TABLE_ + (1b - 0b), %\Reg
+    movl  C_FUNC(\Name)@GOT(%\Reg), %\Reg
+.intel_syntax noprefix
+.endm
diff --git a/src/coreclr/src/vm/CMakeLists.txt b/src/coreclr/src/vm/CMakeLists.txt
@@ -378,6 +378,7 @@ else(WIN32)
     elseif(CLR_CMAKE_TARGET_ARCH_I386)
         set(VM_SOURCES_WKS_ARCH_ASM
             ${ARCH_SOURCES_DIR}/asmhelpers.S
+            ${ARCH_SOURCES_DIR}/jithelp.S
             ${ARCH_SOURCES_DIR}/gmsasm.S
             ${ARCH_SOURCES_DIR}/umthunkstub.S
         )