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Add Linux Unicorn patch + desc. (#2609)

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Michael Gielda 2021-09-15 01:47:10 +02:00 committed by GitHub
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2 changed files with 45 additions and 2 deletions
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23
Ryujinx.Tests.Unicorn/libs/README.md
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@ -1,3 +1,22 @@
The pre-compiled dynamic libraries in this directory are licenced under the GPLv2.
# Unicorn
The source code for windows/unicorn.dll is available at: https://github.com/MerryMage/UnicornDotNet/tree/299451c02d9c810d2feca51f5e9cb6d8b2f38960
Unicorn is a CPU simulator with bindings in many languages, including
C#/.NET.
It is used by the Ryujinx test suite for comparative testing with its built-in
CPU simulator, Armeilleure.
## Windows
On Windows, Unicorn is shipped as a pre-compiled dynamic library (`.dll`), licenced under the GPLv2.
The source code for `windows/unicorn.dll` is available at: https://github.com/MerryMage/UnicornDotNet/tree/299451c02d9c810d2feca51f5e9cb6d8b2f38960
## Linux
On Linux, you will first need to download Unicorn from https://github.com/unicorn-engine/unicorn.
Then you need to patch it to expose the FSPCR register by applying `linux/unicorn_fspcr.patch`
Then, compile Unicorn from source with its `make.sh` script.
See https://github.com/Ryujinx/Ryujinx/pull/1433 for details.

24
Ryujinx.Tests.Unicorn/libs/linux/unicorn_fspcr.patch Normal file
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@ -0,0 +1,24 @@
diff --git a/qemu/target-arm/unicorn_arm.c b/qemu/target-arm/unicorn_arm.c
index 5ff9ebb..d4953f4 100644
--- a/qemu/target-arm/unicorn_arm.c
+++ b/qemu/target-arm/unicorn_arm.c
@@ -101,6 +101,9 @@ int arm_reg_read(struct uc_struct *uc, unsigned int *regs, void **vals, int coun
case UC_ARM_REG_FPEXC:
*(int32_t *)value = ARM_CPU(uc, mycpu)->env.vfp.xregs[ARM_VFP_FPEXC];
break;
+ case UC_ARM_REG_FPSCR:
+ *(int32_t *)value = vfp_get_fpscr(&ARM_CPU(uc, mycpu)->env);
+ break;
case UC_ARM_REG_IPSR:
*(uint32_t *)value = xpsr_read(&ARM_CPU(uc, mycpu)->env) & 0x1ff;
break;
@@ -175,6 +178,9 @@ int arm_reg_write(struct uc_struct *uc, unsigned int *regs, void* const* vals, i
case UC_ARM_REG_FPEXC:
ARM_CPU(uc, mycpu)->env.vfp.xregs[ARM_VFP_FPEXC] = *(int32_t *)value;
break;
+ case UC_ARM_REG_FPSCR:
+ vfp_set_fpscr(&ARM_CPU(uc, mycpu)->env, *(uint32_t *)value);
+ break;
case UC_ARM_REG_IPSR:
xpsr_write(&ARM_CPU(uc, mycpu)->env, *(uint32_t *)value, 0x1ff);
break;