x86, asm: Add 32-bit versions of the combined CFI macros

Add 32-bit versions of the combined CFI macros, equivalent to the
64-bit ones except, obviously, operating on 32-bit stack words.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 17 insertions, 1 deletions

diff --git a/arch/x86/include/asm/dwarf2.h b/arch/x86/include/asm/dwarf2.h
index 3afc5e87cfdd..ae6253ab9029 100644
--- a/arch/x86/include/asm/dwarf2.h
+++ b/arch/x86/include/asm/dwarf2.h
@@ -87,9 +87,25 @@
         CFI_RESTORE \reg
         .endm
 #else /*!CONFIG_X86_64*/
+        .macro pushl_cfi reg
+        pushl \reg
+        CFI_ADJUST_CFA_OFFSET 4
+        .endm
 
-        /* 32bit defenitions are missed yet */
+        .macro popl_cfi reg
+        popl \reg
+        CFI_ADJUST_CFA_OFFSET -4
+        .endm
 
+        .macro movl_cfi reg offset=0
+        movl %\reg, \offset(%esp)
+        CFI_REL_OFFSET \reg, \offset
+        .endm
+
+        .macro movl_cfi_restore offset reg
+        movl \offset(%esp), %\reg
+        CFI_RESTORE \reg
+        .endm
 #endif /*!CONFIG_X86_64*/
 #endif /*__ASSEMBLY__*/