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[PULL,2/6] linux-user/mips: Use P5600 as default CPU to run NaN2008 ELF binaries

Message ID 20230330131856.94210-3-philmd@linaro.org
State Accepted
Commit 450cb7ec2c5fda51b9650ca25e59ac9deeb60d1b
Headers show
Series [PULL,1/6] linux-user/sparc: Don't use 16-bit UIDs on SPARC V9 | expand

Commit Message

Philippe Mathieu-Daudé March 30, 2023, 1:18 p.m. UTC 
Per the release 6.06 revision history:

 5.03 August 21, 2013

 • ABS2008 and NAN2008 fields of Table 5.7 “FCSR RegisterField
   Descriptions” were optional in release 3 and could be R/W,
   but as of release 5 are required, read-only, and preset by
   hardware.

The P5600 core implements the release 5, and has the ABS2008
and NAN2008 bits set in CP1_fcr31. Therefore it is able to run
ELF binaries compiled with EF_MIPS_NAN2008, such the CIP United
Debian NaN2008 distribution:
http://repo.oss.cipunited.com/mipsel-nan2008/README.txt

In order to run such compiled binaries, select by default the
P5600 core when the ELF 'MIPS_NAN2008' flag is set.

Reported-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20230327162444.388-1-philmd@linaro.org>
---
 linux-user/mips/target_elf.h | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/linux-user/mips/target_elf.h b/linux-user/mips/target_elf.h
index a98c9bd6ad..b965e86b2b 100644
--- a/linux-user/mips/target_elf.h
+++ b/linux-user/mips/target_elf.h
@@ -15,6 +15,9 @@  static inline const char *cpu_get_model(uint32_t eflags)
     if ((eflags & EF_MIPS_MACH) == EF_MIPS_MACH_5900) {
         return "R5900";
     }
+    if (eflags & EF_MIPS_NAN2008) {
+        return "P5600";
+    }
     return "24Kf";
 }
 #endif