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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,3 @@ | ||
| [submodule "include/linux/libhc"] | ||
| path = include/linux/libhc | ||
| url = https://github.com/panda-re/libhc.git |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,108 +1,5 @@ | ||
| #ifndef HYPERCALL_H | ||
| #define HYPERCALL_H | ||
| #include "linux/types.h" | ||
|
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||
| static inline void igloo_hypercall(unsigned long num, unsigned long arg1) { | ||
| #if defined(CONFIG_MIPS) | ||
| register unsigned long reg0 asm("v0") = num; | ||
| register unsigned long reg1 asm("a0") = arg1; | ||
|
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||
| asm volatile( | ||
| "movz $0, $0, $0" | ||
| : "+r"(reg0) | ||
| : "r"(reg1) // num in register v0 | ||
| : "memory" | ||
| ); | ||
|
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||
|
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| #elif defined(CONFIG_ARM64) | ||
| register unsigned long reg0 asm("x8") = num; | ||
| register unsigned long reg1 asm("x0") = arg1; | ||
| asm volatile( | ||
| "msr S0_0_c5_c0_0, xzr \n" | ||
| : "+r"(reg1) | ||
| : "r"(reg0) | ||
| : "memory" | ||
| ); | ||
| #elif defined(CONFIG_ARM) | ||
| register unsigned long reg0 asm("r7") = num; | ||
| register unsigned long reg1 asm("r0") = arg1; | ||
|
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||
| asm volatile( | ||
| "mcr p7, 0, r0, c0, c0, 0" | ||
| : "+r"(reg1) | ||
| : "r"(reg0) | ||
| : "memory" | ||
| ); | ||
| #elif defined(CONFIG_X86_64) | ||
| register unsigned long reg0 asm("rax") = num; | ||
| register unsigned long reg1 asm("rdi") = arg1; | ||
|
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||
| asm volatile( | ||
| "cpuid" | ||
| : "+r"(reg0) // hypercall num + return value in rax | ||
| : "r"(reg1) // arguments | ||
| : "memory", "ebx", "ecx", "edx" // No clobber | ||
| ); | ||
| #else | ||
| #error "No igloo_hypercall support for architecture" | ||
| #endif | ||
| } | ||
|
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| static inline unsigned long igloo_hypercall2(unsigned long num, unsigned long arg1, unsigned long arg2) { | ||
| #if defined(CONFIG_ARM64) | ||
| register unsigned long reg0 asm("x8") = num; | ||
| register unsigned long reg1 asm("x0") = arg1; | ||
| register unsigned long reg2 asm("x1") = arg2; | ||
| asm volatile( | ||
| "msr S0_0_c5_c0_0, xzr \n" | ||
| : "+r"(reg1) // Input and output | ||
| : "r"(reg0), "r"(reg2) | ||
| : "memory" | ||
| ); | ||
| return reg1; | ||
| #elif defined(CONFIG_ARM) | ||
| register unsigned long reg0 asm("r7") = num; | ||
| register unsigned long reg1 asm("r0") = arg1; | ||
| register unsigned long reg2 asm("r1") = arg2; | ||
|
|
||
| asm volatile( | ||
| "mcr p7, 0, r0, c0, c0, 0" | ||
| : "+r"(reg1) // Input and output | ||
| : "r"(reg0), "r"(reg2) | ||
| : "memory" | ||
| ); | ||
|
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| return reg1; | ||
|
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||
| #elif defined(CONFIG_MIPS) | ||
| register unsigned long reg0 asm("v0") = num; | ||
| register unsigned long reg1 asm("a0") = arg1; | ||
| register unsigned long reg2 asm("a1") = arg2; | ||
|
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||
| asm volatile( | ||
| "movz $0, $0, $0" | ||
| : "+r"(reg0) // Input and output in R0 | ||
| : "r"(reg1) , "r" (reg2)// arg2 in register A1 | ||
| : "memory" | ||
| ); | ||
| return reg0; | ||
| #elif defined(CONFIG_X86_64) | ||
| register unsigned long reg0 asm("rax") = num; | ||
| register unsigned long reg1 asm("rdi") = arg1; | ||
| register unsigned long reg2 asm("rsi") = arg2; | ||
|
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||
| asm volatile( | ||
| "cpuid" | ||
| : "+r"(reg0) // hypercall num + return value in rax | ||
| : "r"(reg1), "r"(reg2) // arguments | ||
| : "memory", "ebx", "ecx", "edx" | ||
| ); | ||
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| return reg0; | ||
| #else | ||
| #error "No igloo_hypercall2 support for architecture" | ||
| #endif | ||
| } | ||
|
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||
| #endif | ||
| #include "libhc/hypercall.h" | ||
| #endif | ||
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Why does this file still exist? Shouldn't you just make all the places that include hypercall.h include libhc/hypercall.h?
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The header guard and linux/types.h requirement is unique to the kernel. Though I'm now double checking that the linux types.h is true. If it's not then I'll just add the the header guard to libhc
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types is no longer required for reasons I don't know.