From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Thu, 15 Oct 2020 10:30:09 +0000 (+0200)
Subject: trace: conserve gd register on RISC-V
X-Git-Tag: v2021.10~461^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d3d6afae3c56af4f7b68d777468d509b3d6bdb55;p=platform%2Fkernel%2Fu-boot.git

trace: conserve gd register on RISC-V

An UEFI application may change the value of the register that gd lives in.
But some of our functions like get_ticks() access this register. So we
have to set the gd register to the U-Boot value when entering a trace
point and set it back to the application value when exiting the trace
point.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---

diff --git a/lib/trace.c b/lib/trace.c
index 831283c..defc971 100644
--- a/lib/trace.c
+++ b/lib/trace.c
@@ -57,7 +57,7 @@ static inline uintptr_t __attribute__((no_instrument_function))
 	return offset / FUNC_SITE_SIZE;
 }
 
-#if defined(CONFIG_EFI_LOADER) && defined(CONFIG_ARM)
+#if defined(CONFIG_EFI_LOADER) && (defined(CONFIG_ARM) || defined(CONFIG_RISCV))
 
 /**
  * trace_gd - the value of the gd register